Informacja

Drogi użytkowniku, aplikacja do prawidłowego działania wymaga obsługi JavaScript. Proszę włącz obsługę JavaScript w Twojej przeglądarce.

English (EN)·Polski (PL)·Yкраїнський (UK)
Przejdź do strony domowej biblioteki Centralna Biblioteka Wojskowa Link otwiera się w nowym oknie Logo biblioteki Prolib Integro - strona głównaCentralna Biblioteka Wojskowa

Wyszukujesz frazę "rRNA" wg kryterium: Temat

  Lista filtrów
Wyrównaj
    Wyświetlanie 1-48 z 48
    Tytuł:
    The KRR1 gene encodes a protein required for 18S rRNA synthesis and 40S ribosomal subunit assembly in Saccharomyces cerevisiae.
    Autorzy:
    Gromadka, Robert
    Rytka, Joanna
    Powiązania:
    https://bibliotekanauki.pl/articles/1044220.pdf
    Data publikacji:
    2000
    Wydawca:
    Polskie Towarzystwo Biochemiczne
    Tematy:
    ribosome
    rRNA processing
    yeast
    Opis:
    The newly discovered Saccharomyces cerevisiae gene KRR1 (YCL059c) encodes a protein essential for cell viability. Krr1p contains a motif of clustered basic amino acids highly conserved in the evolutionarly distant species from yeast to human. We demonstrate that Krr1p is localized in the nucleolus. The KRR1 gene is highly expressed in dividing cells and its expression ceases almost completely when cells enter the stationary phase. In vivo depletion of Krr1p leads to drastic reduction of 40S ribosomal subunits due to defective 18S rRNA synthesis. We propose that Krr1p is required for proper processing of pre-rRNA and the assembly of preribosomal 40S subunits.
    Źródło:
    Acta Biochimica Polonica; 2000, 47, 4; 993-1005
    0001-527X
    Pojawia się w:
    Acta Biochimica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Comparison of the nuclear organiser region activity in four taxa of the family Canidae
    Autorzy:
    Pienkowska, A
    Zagalska, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/2041199.pdf
    Data publikacji:
    2001
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    nuclear organiser region activity
    gene cluster
    rRNA
    sex chromosome
    genetics
    Canidae
    racoon dog
    karyotype
    rRNA gene
    Źródło:
    Journal of Applied Genetics; 2001, 42, 4; 493-501
    1234-1983
    Pojawia się w:
    Journal of Applied Genetics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The ribosome filter hypothesis and specialized ribosomes
    Autorzy:
    Filipek, Kamil
    Deryło, Kamil
    Michalec-Wawiórka, Barbara
    Powiązania:
    https://bibliotekanauki.pl/articles/1178213.pdf
    Data publikacji:
    2018
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    filter hypothesis
    rRNA
    ribosomal proteins
    ribosome
    specialized ribosomes
    Opis:
    The ribosome is a macromolecular complex of proteins and RNA, which plays a key role in every living organism, being a heart of the process of translation. Recent findings have shown that it can be also regarded as a regulatory element that adjusts cellular proteome to highly variable environmental conditions. The ribosome is believed to possess the ability to “filter” populations of mRNAs for choosing their appropriate set to meet current demands of the cell. The filter mechanism is based on a specific interaction between mRNA and rRNA or mRNA and ribosomal proteins. The ribosome “filtering activity” is reflected by the ribosomal particles heterogeneity, which originates mainly from variations or modifications within particular components of translational apparatus. Alternations of ribosomal proteins or/and rRNA generate a specific class of ribosomes called specialized ribosomes, which having unique composition can display selectivity toward particular mRNAs representing an additional step of gene expression regulation at the translational level. This work describes a basis of ribosome filter hypothesis illustrated by interesting examples from different domains of life.
    Źródło:
    World Scientific News; 2018, 93; 19-29
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Identification and phenotypic plasticity of Pseudanabaena catenata from the Svalbard archipelago
    Autorzy:
    Khan, Zoya
    Smykla, Jerzy
    Wan Omar, Wan Maznah
    Merican Mohd Sidik Merican, Faradina
    Asmawarnie Azizan, Asmimie
    Pin Foong, Choon
    Convey, Peter
    Najimudin, Nazalan
    Aisyah Alias, Siti
    Powiązania:
    https://bibliotekanauki.pl/articles/2042152.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    16S rRNA
    Arctic
    Cyanobacteria
    Polyphasic approach
    Pseudanabaena
    Źródło:
    Polish Polar Research; 2017, 38, 4; 445-458
    0138-0338
    2081-8262
    Pojawia się w:
    Polish Polar Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Some corrosive bacteria isolated from the technogenic soil ecosystem in Chernihiv city (Ukraine)
    Autorzy:
    Tkachuk, Nataliia
    Zelena, Liubov
    Powiązania:
    https://bibliotekanauki.pl/articles/2026000.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    16S rRNA gene
    microbial induced corrosion
    phenotypic characteristics
    Opis:
    The soil microbiome is exposed to technogenic influence during the operation of metal structures. There are quantitative and qualitative changes in the microbiota of the technogenic ecosystem. During the study of the technogenic soil ecosystem (ferrosphere), samples of which were taken in the field (Chernihiv, Ukraine: 51°29’58”N, 31°16’09”E), the presence of corrosively active microbial cenosis was established: sulfate-reducing, denitrifying, iron-reducing (using acetate as the only electron donor, and Fe (III) as the only electron acceptor) and ammonifying bacteria. The predominant representatives of corrosively active groups of bacteria were isolated. They were identified as Bacillus simplex, Streptomyces gardneri, Streptomyces canus (ammonifying bacteria), Fictibacillus sp. (ammonifying bacteria with iron-reducing ability), Anaerotignum (Clostridium) propionicum (organic acid-producing bacteria), Desulfovibrio oryzae (sulfate-reducing bacteria) based on some microbiological, physiological and biochemical, genetic features. Strains of heterotrophic and hemolitotrophic bacteria (individual representatives and their associations) isolated from the technogenic ecosystem can be used in both industrial and technological spheres. The interaction of isolated bacteria in the process of microbial induced corrosion is a prospect for further research.
    Źródło:
    Studia Quaternaria; 2021, 38, 2; 101-108
    1641-5558
    2300-0384
    Pojawia się w:
    Studia Quaternaria
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Morphology, Ciliary Pattern and Molecular Phylogeny of Trachelophyllum brachypharynx Levander, 1894 (Litostomatea, Haptoria, Spathidiida)
    Autorzy:
    JANG, Seok Won
    VĎAČNÝ, Peter
    SHAZIB, Shahed Uddin Ahmed
    SHIN, Mann Kyoon
    Powiązania:
    https://bibliotekanauki.pl/articles/763656.pdf
    Data publikacji:
    2015
    Wydawca:
    Uniwersytet Jagielloński. Wydawnictwo Uniwersytetu Jagiellońskiego
    Tematy:
    18S rRNA gene, dorsal brush, Korea, lepidosomes, Trachelophyllidae
    Opis:
    We isolated a relatively unknown haptorian ciliate, Trachelophyllum brachypharynx, in brackish water from the mouth of the Taehwa River, South Korea. The morphology of this isolate was studied using in vivo observation and protargol impregnation, and its evolutionary history was revealed by phylogenetic analysis of the 18S rRNA gene. The main features of T. brachypharynx include (i) a very narrowly fusiform and slightly contractile body about 380 × 40 μm in size; (ii) two ellipsoidal macronuclear nodules typically connected by a fine strand; (iii) a single terminal contractile vacuole; (iv) filiform extrusomes that are typically 30 µm long; (v) an average of 24 ciliary rows, with two of them anteriorly differentiated into an isostichad dikinetidal dorsal brush; and (vi) hat-shaped lepidosomes. Based on the 18S rRNA gene phylogeny, T. brachypharynx clustered together with Trachelophyllum sp. within the order Spathidiida. Furthermore, phylogenetic trees and networks indicate some members from the genera Enchelyodon and Spathidium as the nearest relatives of trachelophyllids. Therefore, based on the present molecular and comparative-morphological analyses, we suggested a hypothesis explaining how trachelophyllids may have evolved from a spathidiid-like ancestor via an enchelyodonid-like stage.
    Źródło:
    Acta Protozoologica; 2015, 54, 2
    1689-0027
    Pojawia się w:
    Acta Protozoologica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Taxonomic Descriptions of Two Marine Ciliates, Euplotes dammamensis n. sp. and Euplotes balteatus (Dujardin, 1841) Kahl, 1932 (Ciliophora, Spirotrichea, Euplotida), Collected from the Arabian Gulf, Saudi Arabia
    Autorzy:
    Chen, Xumiao
    Zhao, Yan
    Al-Farraj, Saleh A.
    AL-QURAISHY, Saleh
    El-Serehy, Hamed A.
    Shao, Chen
    Al-Rasheid, Khaled A. S.
    Powiązania:
    https://bibliotekanauki.pl/articles/763475.pdf
    Data publikacji:
    2013
    Wydawca:
    Uniwersytet Jagielloński. Wydawnictwo Uniwersytetu Jagiellońskiego
    Tematy:
    Marine ciliate, morphogenesis, morphology, new species, SSU-rRNA, taxonomy
    Opis:
    The morphology, morphogenesis and infraciliature of two marine euplotid ciliates, Euplotes dammamensis n. sp. and Euplotes balteatus (Dujardin, 1841) Kahl, 1932, isolated from a sandy beach of the Arabian Gulf, Saudi Arabia, were investigated using observations in vivo and protargol-impregnation methods. Euplotes dammamensis n. sp. is characterized by a combination of features including its huge body size (100–170 × 80–120 μm), 10 conspicuous dorsal ridges, 10 normal-sized frontoventral and two marginal cirri, and 11 dorsal kineties. Euplotes balteatus is mainly characterized by 10 frontoventral, two caudal, and two left marginal cirri, 7–10 dorsal kineties and 5–7 prominent dorsal ridges as well as double-eurystomus silverline system. The small subunit rRNA (SSU-rRNA) gene sequences were determined for both species and phylogenetic analyses based on these data indicated that E. dammamensis is most closely related to E. parabalteatus Jiang et al., 2010, and E. balteatus clusters with E. plicatum Valbonesi et al., 1997, E. orientalis Jiang et al., 2010, and E. bisulcatus Kahl, 1932.
    Źródło:
    Acta Protozoologica; 2013, 52, 2
    1689-0027
    Pojawia się w:
    Acta Protozoologica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Description of Epistylis camprubii n. sp., a Species Highly Tolerant to Ammonium and Nitrite
    Autorzy:
    Canals, Oriol
    Salvadó, Humbert
    Powiązania:
    https://bibliotekanauki.pl/articles/763511.pdf
    Data publikacji:
    2016
    Wydawca:
    Uniwersytet Jagielloński. Wydawnictwo Uniwersytetu Jagiellońskiego
    Tematy:
    Peritrichia, wastewater treatment, ciliates, 18s rRNA, ammonium, nitrite
    Opis:
    A new peritrich species highly tolerant to ammonium and nitrite, Epistylis camprubii n. sp., was found adhered to the biofilm of two advanced wastewater treatment plants treating high ammonium-loaded wastewater in Rubí, Spain. Its morphology, oral infraciliature and phylogenetic position in the peritrich clade were studied. The new species is a vase-shaped peritrich, constricted below the peristomial lip, with an in vivo average length of 58.7 ± 10.1 µm, average width of 32.0 ± 5.4 µm, and a longitudinally striated, compact stalk that occasionally exhibits uneven thickness and rarely shows transverse segments. The peristomial disc is commonly rounded or pointed, and rarely umbilicated. The C-shaped macronucleus is located in the adoral half of the body, and the only contractile vacuole lies in the adoral third of the zooid. The molecular analysis of the 18s gene sequence clustered E. camprubii n. sp. together with the other Epistylis, with the exception of Epistylis galea.
    Źródło:
    Acta Protozoologica; 2016, 55, 1
    1689-0027
    Pojawia się w:
    Acta Protozoologica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Molecular diversity of the bacterial community associated with Acropora digitifera (Dana, 1846) corals on Rancabuaya coastline, Garut District, Indonesia
    Autorzy:
    Rizal, Achmad
    Akbarsyah, Nora
    Kdyp, Pringgo
    Permana, Rega
    Andhikawati, Aulia
    Powiązania:
    https://bibliotekanauki.pl/articles/1030642.pdf
    Data publikacji:
    2020
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Acropora digitifera
    Bacteria
    Culture
    Gen 16S rRNA
    Metagenome
    Opis:
    Bacteria are one of the prokaryotic microorganisms that are symbiotic with coral reefs. The purpose of this study was to determine the diversity of bacterial communities associated with Acropora digitifera corals in the rancabuaya coastline of Garut district, West Java through a metagenomic and cultural approach. Stages of research include tissue isolation using waterpics, isolation of bacterial genomic DNA, sequencing using the NGS (Next Generation Sequencing) method of Hiseq using 16S rRNA V3-V4 region 341F and 806R primers for the metagenomic approach. While the culture approach, carried out inoculation, bacterial cultivation, gram staining, then proceed with the identification of molecular characteristics of DNA with 16S rRNA gene sequences. Dominantly, the results of bacterial identification were obtained as many as 77 species from 10 genera 10 families 10 orders of 10 classes and 4 phylum and unidentified reads of 6%. The results of the identification of 16S rRNA showed that the isolate ACD.P4.PH7.P had a close relationship with the Bacillus flexus strain BF strain zb strain with a similarity of 85.44%. Isolate ACD.P4.PH9.P has a close relationship with Bacillus sp. c234 with a 98.50% similarity. Isolate ACD.P4.PH9.K has an approach with the species Bacillus sp. strain 6RM1 with a similarity of 94.78%.
    Źródło:
    World Scientific News; 2020, 144; 384-396
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Polyadenylation and decay of 26S rRNA as part of Nicotiana tabacum response to cadmium
    Autorzy:
    Lewandowska, Małgorzata
    Borcz, Barbara
    Kamińska, Jolanta
    Wawrzyński, Adam
    Sirko, Agnieszka
    Powiązania:
    https://bibliotekanauki.pl/articles/1040862.pdf
    Data publikacji:
    2007
    Wydawca:
    Polskie Towarzystwo Biochemiczne
    Tematy:
    polyadenylation of rRNA
    RNA decay
    programmed cell death
    cadmium
    tobacco
    Opis:
    In contrast to mRNAs, ribosomal RNAs are generally not considered to be polyadenylated. Only a few recent reports describe non-abundant polyadenylated rRNA-related transcripts that have been detected and characterized in yeast and in human cells. Here we depict the phenomenon of 26S rRNA polyadenylation and degradation that was observed in shoots of Nicotiana tabaccum plants grown in the presence of cadmium. Fragments corresponding to 26S rRNA were identified using suppression subtractive hybridization during screening for genes induced in tobacco plants upon a three-week exposure to 15 µM cadmium chloride. Extracts prepared from the above-ground tissues of cadmium-treated tobacco plants were supposed to contain exclusively polyadenylated mRNAs. Surprisingly, numerous polyadenylated fragments matching parts of 26S rRNA were identified and their presence was confirmed by Northern blot and cDNA amplification techniques. To our knowledge this is the first report on rRNA polyadenylation in plants.
    Źródło:
    Acta Biochimica Polonica; 2007, 54, 4; 747-755
    0001-527X
    Pojawia się w:
    Acta Biochimica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Reconstruction of Evolutionary History of Pleurostomatid Ciliates (Ciliophora, Litostomatea, Haptoria): Interplay of Morphology and Molecules
    Autorzy:
    VĎAČNÝ, Peter
    SHIN, Mann Kyoon
    KIM, Ji Hye
    JANG, Seok Won
    SHAZIB, Shahed Uddin Ahmed
    RAJTER, Ľubomír
    Powiązania:
    https://bibliotekanauki.pl/articles/763636.pdf
    Data publikacji:
    2015
    Wydawca:
    Uniwersytet Jagielloński. Wydawnictwo Uniwersytetu Jagiellońskiego
    Tematy:
    18S rRNA gene, Acineria, Epiphyllidae fam. nov., Kentrophyllum, Korea
    Opis:
    Pleurostomatids are raptorial ciliates that form a very distinct group within the Haptoria. Traditionally, the order Pleurostomatida was divided into two families: the Amphileptidae with two perioral kineties and a suture formed by the right side ciliary rows, and the Litonotidae with three perioral kineties and without suture. However, molecular phylogenies depicted the “traditional” Amphileptidae as a paraphyletic assemblage nesting also the Litonotidae. To overcome this problem we have analyzed genealogy of pleurostomatids using morphological data and 18S rRNA gene sequences, including newly sequenced genera Acineria and Kentrophyllum. Specifically, we have combined a morphological and molecular approach and have used also some other phylogenetic tools such as phylogenetic networks, split spectrum analysis, quartet mapping as well as the likelihood method of tracing history of morphological characters. These analyses show that: (1) there are not two but three distinct pleurostomatid lineages – Epiphyllidae fam. nov., Amphileptidae and Litonotidae; (2) epiphyllids (Epiphyllum + Kentrophyllum) represent a basal pleurostomatid group which is defined by two perioral kineties, by the presence of a suture on both the right and the left side of the body, by the loss of the oral bulge extrusomes, and by the extrusome fringe extending all around the body except for the oral region; (3) the families Amphileptidae and Litonotidae are monophyletic each, and represent sister groups; (4) Acineria belongs to the Litonotidae, as already indicated by morphological data; (5) Loxophyllum is a monophyletic and crown genus of the Litonotidae; and (6) Litonotus is paraphyletic, which could be very likely caused by a rapid radiation event that did not allow primary nucleotide homologies to be fixed.
    Źródło:
    Acta Protozoologica; 2015, 54, 1
    1689-0027
    Pojawia się w:
    Acta Protozoologica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A new marine ciliate, Metaurostylopsis antarctica nov. spec. (Ciliophora, Urostylida) from the Antarctic Ocean
    Autorzy:
    JUNG, Jae-Ho
    Baek, Ye-Seul
    Kim, Sanghee
    Choi, Han-Gu
    Min, Gi-Sik
    Powiązania:
    https://bibliotekanauki.pl/articles/763640.pdf
    Data publikacji:
    2011
    Wydawca:
    Uniwersytet Jagielloński. Wydawnictwo Uniwersytetu Jagiellońskiego
    Tematy:
    Antarctic Ocean, marine ciliate, Metaurostylopsis antarctica, infraciliature, morphogenesis, SSU rRNA
    Opis:
    In this study, a new marine urostylid ciliate, Metaurostylopsis antarctica nov. spec. collected from the Antarctic Ocean was investigated using morphological, morphometrical, and molecular methods. Metaurostylopsis antarctica nov. spec. is characterized as follows: slender to ellipsoid form in body shape; two types of cortical granules, ellipsoid large one (type I, yellow-green, 1.5 × 1 μm) in rows along dorsal kineties and cirri, circular small one (type II, colourless, 0.3 μm in diameter) scattered throughout whole body; 19–24 adoral membranelles, 4 frontal cirri, 2–5 frontoterminal cirri, 1 buccal and 2 transverse cirri; 3–5 midventral pairs, 10–15 cirri of midventral row; 1 right and 2 left marginal rows; 3 dorsal kineties; about 43 macronuclear nodules. This new species mainly differs from the congeners by the number of marginal rows (1 vs. 3 or more on right side; 2 vs. 3 or more on left side). In addition, proter’s oral primordium  developed on the right side of the oral cavity (vs. in center of oral cavity), and the rightmost anlage splits into two parts, nam ely, the frontoterminal cirri and a transverse cirrus (vs. only frontoterminal cirri). Inter-specific dissimilarities of the SSU rRNA gene between the congeners range from 3.3 to 4.4%.
    Źródło:
    Acta Protozoologica; 2011, 50, 4
    1689-0027
    Pojawia się w:
    Acta Protozoologica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Detection and identification of potentially toxic cyanobacteria in Polish water bodies
    Autorzy:
    Głowacka, Joanna
    Szefel-Markowska, Magdalena
    Waleron, Małgorzata
    Łojkowska, Ewa
    Waleron, Krzysztof
    Powiązania:
    https://bibliotekanauki.pl/articles/1039881.pdf
    Data publikacji:
    2011
    Wydawca:
    Polskie Towarzystwo Biochemiczne
    Tematy:
    mcyB
    microcystins
    toxins
    16S rRNA
    Cyanobacteria
    mcyE
    rpoC1
    Opis:
    The main goal of this study was to determine the distribution of potentially toxic cyanobacteria in 39 selected Polish water bodies. From the water bodies with blooms and also from those in which blooms were not visible 87 samples were investigated. For the first time samples from ponds localized in villages with high agricultural activities were included. Lakes for which microcystin concentrations had been determined before were included as a reference for the research. The detection of cyanobacteria was conducted by microscopic observation as well as by PCR amplification of the rpoC1 gene fragment. Cyanobacteria were present in 75 out of 87 samples. The presence of potentially toxic cyanobacteria was detected by amplification of the mcyB and mcyE genes, which are involved in the biosynthesis of microcystins. Both genes were detected in 7 out of 9 blooms investigated. In the case of samples collected from water bodies in which blooms were not observed, the mcyB and mcyE genes were detected in 20 out of 36. In order to identify the cyanobacteria occurring in selected reservoirs, 16S plus ITS clone libraries were constructed. The method allowed distinguishing 18 different genotypes. After sequence analysis, cyanobacteria belonging to genera Microcystis, Planktothrix, Anabaena, Pseudanabaena, Synechocystis, Synechococcus and Woronichinia were identified. Results confirmed the usefulness of the rpoC1 and mcy genes for monitoring water bodies and detection of potentially toxic cyanobacteria. Application of molecular markers allowed detecting potentially toxic cyanobacteria before the bloom was visible. This is the first comprehensive study concerning cyanobacteria present in different types of Polish water bodies performed using molecular markers.
    Źródło:
    Acta Biochimica Polonica; 2011, 58, 3; 321-333
    0001-527X
    Pojawia się w:
    Acta Biochimica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Microbial biodiversity in arable soils is affected by agricultural practices
    Autorzy:
    Wolińska, Agnieszka
    Górniak, Dorota
    Zielenkiewicz, Urszula
    Goryluk-Salmonowicz, Agata
    Kuźniar, Agnieszka
    Stępniewska, Zofia
    Błaszczyk, Mieczysław
    Powiązania:
    https://bibliotekanauki.pl/articles/972735.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Instytut Agrofizyki PAN
    Tematy:
    dgge
    16s rrna gene
    simpson diversity
    bacterial communities
    arable soils
    Opis:
    The aim of the study was to examine the differences in microbial community structure as a result of agricultural practices. Sixteen samples of cultivated and the same number of non-cultivated soils were selected. Gel bands were identified using the GelCompar software to create the presence-absence matrix, where each band represented a bacterial operational taxonomic unit. The data were used for principal-component analysis and additionally, the Shannon-Weaver index of general diversity, Simpson index of dominance and Simpson index of diversity were calculated. Denaturing gradient gel electrophoresis profiles clearly indicated differentiation of tested samples into two clusters: cultivated and non-cultivated soils. Greater numbers of dominant operational taxonomic units (65) in non-cultivated soils were noted compared to cultivated soils (47 operational taxonomic units). This implies that there was a reduction of dominant bacterial operational taxonomic units by nearly 30% in cultivated soils. Simpson dominance index expressing the number of species weighted by their abundance amounted to 1.22 in cultivated soils, whereas a 3-fold higher value (3.38) was observed in non-cultivated soils. Land-use practices seemed to be a important factors affected on biodiversity, because more than soil type determined the clustering into groups.
    Źródło:
    International Agrophysics; 2017, 31, 2; 259-271
    0236-8722
    Pojawia się w:
    International Agrophysics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Metagenomic Analysis Reveals Microbial Communities in Lake Qarun – Egypt
    Autorzy:
    Yosef, Mahmoud Mohamed
    Elrefy, Ali Mohamed
    Elfeky, Fawzy Ali
    Powiązania:
    https://bibliotekanauki.pl/articles/2027812.pdf
    Data publikacji:
    2022
    Wydawca:
    Polskie Towarzystwo Inżynierii Ekologicznej
    Tematy:
    bacterial community
    Ion Torrent
    Qarun Lake
    16S rRNA high throughput
    Opis:
    Characterization of water quality in Lake Qarun indicated that the water is very poor for irrigation and aquatic life. At the same time, the bacterial community was represented mainly by five bacterial phyla with different proportions: Firmicutes (53%), Proteobacteria (33%), Bacteroidetes (7%), Actinobacteria (5%) and Thermi (1%). Furthermore, metagenomes prediction of bacterial communities using PICRUSt indicated important functional gene families associated with metabolism, environmental information, genetic information processing, and cellular processes. It is worth noting that Benzoate degradation had the highest average relative abundance, followed by aminobenzoate degradation among 18 individual KEGG pathways from xenobiotics biodegradation and metabolism which showed higher relative abundance. The obtained data indicate that a different source of pollution in Qarun Lakes has an impact on the bacterial community’s structure, as well as the biota and is expected to cause health problems.
    Źródło:
    Journal of Ecological Engineering; 2022, 23, 2; 70-76
    2299-8993
    Pojawia się w:
    Journal of Ecological Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Characteristics of selected molecular methods used in identification and assessment of genetic diversity of bacteria belonging to the genus Azotobacter
    Autorzy:
    Kozieł, Monika
    Gałązka, Anna
    Powiązania:
    https://bibliotekanauki.pl/articles/2147979.pdf
    Data publikacji:
    2019-09-30
    Wydawca:
    Instytut Uprawy Nawożenia i Gleboznawstwa – Państwowy Instytut Badawczy
    Tematy:
    Azotobacter
    ITS PCR
    16S rRNA gen
    PCR MP
    RAPD
    ARDRA
    Opis:
    Modern molecular techniques have greatly increased our knowledge concerning phylogenetic and functional diversity of microorganisms inhabiting the soil environment. Soil ecosys-tem is relatively complex with a high level of microbiologically diversity. The application of traditional culture-based techniques dose not reflect the total diversity of microbial community in-habiting in soil environment. On the other hand commonly used molecular methods allow for quick and accurate identification and evaluation of the genetic diversity of microorganisms in-habiting this environment. Free-living bacteria belonging to the genus Azotobacter commonly occurring in soil. Azotobacter spp. are the subject of many studies conducted both in Poland and in the world. The interest in these bacteria is largely related to their properties very useful for agriculture. Owing to their capability of fixing atmospheric nitrogen and making it available to plants and production of plant growth promotion and fungicidal substances, they are used in the production of soil bacterial inoculants. In addition, these bacteria are an excellent indicator of soil fertil-ity, which is why they are often used as test microorganisms in many studies. The paper presents an overview of molecular mi-crobiological techniques used to identify and evaluate the genetic diversity of Azotobacter spp. in studies conducted both in Poland and across the world. The ITS PCR, PCR-RFLP methods and 16S rRNA gene amplification are used to identify bacteria of the ge-nus Azotobacter, and PCR MP, RAPD PCR and ARDRA are used to assess the genetic diversity of these microorganisms.
    Źródło:
    Polish Journal of Agronomy; 2019, 38; 37-45
    2081-2787
    Pojawia się w:
    Polish Journal of Agronomy
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Evidence of amorphous Ca-phosphate precipitate caused by bio mineralisation in 4-5th CE lime plasters of the previously submerged east coastal monument of Salvankuppam
    Autorzy:
    Singh, Manager R.
    Kumar, S. Vinodh
    Ganaraj, Kuntikana
    Powiązania:
    https://bibliotekanauki.pl/articles/2086560.pdf
    Data publikacji:
    2021
    Wydawca:
    Polskie Towarzystwo Mineralogiczne
    Tematy:
    Amorphous Ca-phosphate
    16S rRNA
    Bio-mineralization
    calcite
    lime plasters
    Opis:
    The lime plasters of the excavated monument of Salvankuppam, previously submerged and exposed by the Tsunami occurred in the Indian Ocean on 26th December 2004 was studied with different analytical techniques. The temple is dated 4-5th century CE. The XRF, XRD, FTIR, NMR, SEM-EDX analysis of the lime plasters evidenced particular occurrence of phosphatised bacterial remains in saline conditions. The formation of amorphous Ca-phosphate by bio mineralization was identified in the plasters by the analyses. The plasters are made of air-lime with coarse aggregates and seashells inclusion as confirmed by the thermal and chemical analysis. The microstructure and morphological investigations of mineralized microbial structures by SEM-EDX indicated the formation of amorphous Ca-phosphate. The unordered and fibrous spherulites have hardened and reduced porosity of the plaster by bio mineralization as observed through MIP analysis. The 16S rRNA sequencing has identified the Pseudomonas strains mainly responsible for the clustering of amorphous Ca-phosphate particles around the bacterial colony.
    Źródło:
    Mineralogia; 2021, 52, 1; 19--30
    1899-8291
    1899-8526
    Pojawia się w:
    Mineralogia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Dynamika ilościowa AOB w procesie biologicznego oczyszczania odcieków składowiskowych w warunkach beztlenowych
    Quantitative dynamics of AOB in the biological treatment of landfill leachate in anaerobic conditions
    Autorzy:
    Jurczyk, Ł.
    Koc-Jurczyk, J.
    Różalska, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/296871.pdf
    Data publikacji:
    2011
    Wydawca:
    Politechnika Częstochowska. Wydawnictwo Politechniki Częstochowskiej
    Tematy:
    odcieki składowiskowe
    SBR
    AOB
    16S rRNA
    Q-PCR
    landfill leachate
    Opis:
    Składowanie odpadów, nawet na obiektach prawidłowo zaprojektowanych i eksploatowanych może stwarzać wiele zagrożeń dla środowiska. Jednym z najpoważniejszych jest powstawanie w obrębie składowiska odcieków, charakteryzujących się między innymi dużymi stężeniami azotu amonowego oraz znaczną zawartością trudno rozkładalnych związków organicznych. Podstawową metodą unieszkodliwiania odcieków składowiskowych jest ich oczyszczanie w reaktorach biologicznych. U podstaw tego procesu leży biochemiczny rozkład azotu amonowego przez mikroorganizmy wykazujące ekspresję genu monooksygenazy amoniaku, a jednym ze sposobów zwiększenia jego efektywności jest stosowanie różnych typów nośników stwarzających tym mikroorganizmom optymalne warunki życia. Odcieki wykorzystane w badaniach pochodziły ze składowiska odpadów komunalnych w Kozodrzy (woj. podkarpackie). Badania prowadzono w trzech sekwencyjnych reaktorach biologicznych o pojemności 2 l (SBR 1-3), w warunkach beztlenowych, w temperaturze 42°C i przy stałym czasie zatrzymania wynoszącym 6 d. SBR 1 pracował tylko z osadem czynnym zawieszonym, natomiast SBR 2 i 3 zostały wyposażone w wypełnienia z PCV o różnej średnicy porów (odpowiednio 2 ÷ 3 oraz 4 ÷ 5 mm). W pobranych z reaktorów próbkach osadu badano, za pomocą techniki ilościowej łańcuchowej reakcji polimerazy (Q-PCR), zawartość kopii genu 16S rRNA o sekwencji charakterystycznej dla wszystkich znanych β-proteobakterii mających zdolność do utleniania amoniaku. Porównując w badanych próbkach dynamikę ilości badanego genu, stwierdzono, że wypełnienie zastosowane w SBR 2 powodowało najmniejsze wahania liczebności bakterii w procesie ich adaptacji do warunków technologicznych. Efektywność usuwania azotu amonowego we wszystkich reaktorach miała związek z ilością kopii badanego genu.
    Waste disposal, even on properly designed and operated landfills may be environmentally hazardous. One of the most onerous aspects of landfilling is formation of the leachate, characterized by high concentrations of ammonia nitrogen and organic compounds. One of the most common method applied for nitrogen neutralization in landfill leachate is biological treatment based on biochemical decomposition of an ammonia by micro-organisms expressing gene of ammonia monooxygenase. The way to increasing efficiency of this process is the application of different types of fillings creating optimal conditions for microorganisms life. Leachate used in the study came from a large scale municipal waste landfill in Kozodrza (podkarpackie province, Poland). The research was conducted in three sequential batch reactors of 2 l (SBR 1-3), in anaerobic conditions, high temperature (42°C) and a constant HRT of 6 d. SBR 1 ran with suspended activated sludge, while the SBR 2 and 3 were equipped with PVC filling of different pore diameters (respectively 2 ÷ 3 and 4 ÷ 5 mm). The samples of sludge were examined for number of 16S rDNA copies characterized for ammonia oxidizing β-proteobacteria. Comparing the quantitative dynamics of 16S rRNA gene in samples it was found that fillings used in the SBR 2 resulted in slightest hesitation of the number of bacteria during the process of their adaptation to technological conditions. The ammonia nitrogen removal efficiency in all reactors was related to the number of 16S rRNA gene copies.
    Źródło:
    Inżynieria i Ochrona Środowiska; 2011, 14, 4; 309-322
    1505-3695
    2391-7253
    Pojawia się w:
    Inżynieria i Ochrona Środowiska
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    First insight into microbial community composition in a phosphogypsum waste heap soil
    Autorzy:
    Zielińska, Sylwia
    Radkowski, Piotr
    Ossowski, Tadeusz
    Ludwig-Gałęzowska, Agnieszka
    Łoś, Joanna
    Łoś, Marcin
    Powiązania:
    https://bibliotekanauki.pl/articles/1038561.pdf
    Data publikacji:
    2017
    Wydawca:
    Polskie Towarzystwo Biochemiczne
    Tematy:
    microbial community
    16S rRNA gene
    soil sample
    postproduction waste
    phosphogypsum
    reclamation
    Opis:
    The aim of this study was to investigate the soil microbial communities of a phosphogypsum waste heap. The soil microbial community structures can differ over time, as they are affected by the changing environmental conditions caused by a long-term exposure to different kinds of pollutions, like is the case of soil in the post-production waste area in Wiślinka (in the northern part of Poland) currently undergoing restoration. Our analyses indicated that the most abundant phyla were Proteobacteria, Acidobacteria, and Actinobacteria, and generally such an abundance is common for most of the studied soils. The most dominant class were Alphaproteobacteria, with their participation in 33.46% of the total reads. Among this class, the most numbered order was Sphingomonadales, whereas among this order the Sphingomonadaceae family was the most abundant one. The Sphingomonadaceae family is currently in the center of interest of many researchers, due to the ability of some of its members to utilize a wide range of naturally occurring organic compounds and many types of environmental contaminants. This kind of knowledge about microbial populations can support efforts in bioremediation and can improve monitoring changes in the contaminated environments.
    Źródło:
    Acta Biochimica Polonica; 2017, 64, 4; 693-698
    0001-527X
    Pojawia się w:
    Acta Biochimica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Comparison of PCR-DGGE and Nested-PCR-DGGE Approach for Ammonia Oxidizers Monitoring in Membrane Bioreactors’ Activated Sludge
    zalety i wady wykorzystywania techniki nested-PCR w monitoringu bakterii utleniających amoniak w osadzie czynnym bioreaktora membranowego
    Autorzy:
    Ziembińska-Buczyńska, A.
    Wiszniowski, J.
    Ciesielski, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/204755.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    ammonia oxidizing bacteria
    AOB
    16S rRNA gene
    Polymerase Chain Reaction – Denaturing Gradient Gel Electrophoresis
    PCR-DGGE
    nested-PCR
    utlenianie amoniaku
    bakteria utleniająca amoniak
    gen kodujący 16S rRNA
    Opis:
    Nitritation, the first stage of ammonia removal process is known to be limiting for total process performance. Ammonia oxidizing bacteria (AOB) which perform this process are obligatory activated sludge habitants, a mixture consisting of Bacteria, Protozoa and Metazoa used for biological wastewater treatment. Due to this fact they are an interesting bacterial group, from both the technological and ecological point of view. AOB changeability and biodiversity analyses both in wastewater treatment plants and lab-scale reactors are performed on the basis of 16S rRNA gene sequences using PCR-DGGE (Polymerase Chain Reaction – Denaturing Gradient Gel Electrophoresis) as a molecular biology tool. AOB researches are usually led with nested PCR. Because the application of nested PCR is laborious and time consuming, we have attempted to check the possibility of using only first PCR round to obtain DGGE fingerprinting of microbial communities. In this work we are comparing the nested and non-nested PCR-DGGE monitoring of an AOB community and presenting advantages and disadvantages of both methods used. The experiment revealed that PCR technique is a very sensitive tool for the amplification of even a minute amount of DNA sample. But in the case of nested-PCR, the sensitivity is higher and the template amount could be even smaller. The nested PCR-DGGE seems to be a better tool for AOB community monitoring and complexity research in activated sludge, despite shorter fragments of DNA amplification which seems to be a disadvantage in the case of bacteria identification. It is recommended that the sort of analysis approach should be chosen according to the aim of the study: nested-PCR-DGGE for community complexity analysis, while PCR-DGGE for identification of the dominant bacteria.
    Nitiritacja – pierwszy etap nitryfikacji, jest uznawany za krok limitujący przebieg całości procesu utleniania amoniaku. Bakterie utleniające amoniak (ang. ammonia oxidizing bacteria, AOB), które prowadzą ten proces są stałymi mieszkańcami osadu czynnego – mieszaniny bakterii, Protozoa i Metazoa, wykorzystywanych do biologicznego oczyszczania ścieków. Z tego powodu są one interesujące zarówno z punktu widzenia technologii, jak i ekologii mikroorganizmów. Analizy zmienności i bioróżnorodności bakterii utleniających amoniak, zarówno w oczyszczalni ścieków, jak i w reaktorach w skali laboratoryjnej, są prowadzone w oparciu o sekwencje genu kodującego 16S rRNA z użyciem metody biologii molekularnej, jaką jest PCR-DGGE (Polymerase Chain Reaction – Denaturing Gradient Gel Electrophoresis). Analizy te są zazwyczaj prowadzone techniką tzw. nested-PCR. Ze względu na fakt, że metoda ta wymaga większego nakładu pracy i czasu, niż tradycyjny jednoetapowy PCR (ang. non-nested PCR) podjęto próbę sprawdzenia możliwości zastosowania techniki jednoetapowego PCR do uzyskania wzorów prążkowych DGGE bakterii utleniających amoniak. W tej pracy zaprezentowano wyniki analizy PCR-DGGE z użyciem technik nested i non-nested PCR oraz podjęto próbę wykazania ich wad i zalet.
    Źródło:
    Archives of Environmental Protection; 2014, 40, 4; 31-38
    2083-4772
    2083-4810
    Pojawia się w:
    Archives of Environmental Protection
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A New Marine Cyrtophorid Ciliate, Dysteria nabia nov. spec. (Ciliophora: Phyllopharyngea: Cyrtophorida: Dysteriidae), from South Korea
    Autorzy:
    Park, Mi-Hyun
    Min, Gi-Sik
    Powiązania:
    https://bibliotekanauki.pl/articles/763537.pdf
    Data publikacji:
    2014
    Wydawca:
    Uniwersytet Jagielloński. Wydawnictwo Uniwersytetu Jagiellońskiego
    Tematy:
    Dysteriidae, Dysteria nabia nov. spec., infraciliature, marine ciliate, SSU rRNA, Korea, Yellow Sea
    Opis:
    We discovered a new marine cyrtophorid ciliate, Dysteria nabia nov. spec., in Incheon Harbor in the Yellow Sea and at Ihoteu Beach on Jeju-do Island, South Korea. This new species is described based on live observations, protargol impregnation, and silver nitrate impregnation. Dysteria nabia measures approximately 94 × 45 µm in vivo and has an oval to elliptical form, with a subcaudally positioned podite; 5 right kineties, with a single shortened innermost right kinety; usually 3 left frontal kineties; and 2 contractile vacuoles. The length of the small subunit ribosomal RNA (SSU rRNA) gene sequence is 1,700 bp. In comparison with the five previously identified sequences of Dysteria species, the inter-specific similarity of D. nabia ranges from 91.5 to 98.4%.
    Źródło:
    Acta Protozoologica; 2014, 53, 3
    1689-0027
    Pojawia się w:
    Acta Protozoologica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Electron Microscopical Investigations of a New Species of the Genus Sappinia (Thecamoebidae, Amoebozoa), Sappinia platani sp. nov., Reveal a Dictyosome in this Genus
    Autorzy:
    WYLEZICH, Claudia
    Kudryavtsev, Alexander
    Michel, Rolf
    Corsaro, Daniele
    Walochnik, Julia
    Powiązania:
    https://bibliotekanauki.pl/articles/763632.pdf
    Data publikacji:
    2015
    Wydawca:
    Uniwersytet Jagielloński. Wydawnictwo Uniwersytetu Jagiellońskiego
    Tematy:
    Sappinia platani sp. nov., Amoebozoa, Thecamoebidae, SSU rRNA gene, diversity, dictyosome, glycocalyx, endocytobionts
    Opis:
    The genus Sappinia belongs to the family Thecamoebidae within the Discosea (Amoebozoa). For long time the genus comprised only two species, S. pedata and S. diploidea, based on morphological investigations. However, recent molecular studies on gene sequences of the small subunit ribosomal RNA (SSU rRNA) gene revealed a high genetic diversity within the genus Sappinia. This indicated a larger species richness than previously assumed and the establishment of new species was predicted. Here, Sappinia platani sp. nov. (strain PL-247) is described and ultrastructurally investigated. This strain was isolated from the bark of a sycamore tree (Koblenz, Germany) like the re-described neotype of S. diploidea. The new species shows the typical characteristics of the genus such as flattened and binucleate trophozoites with a differentiation of anterior hyaloplasm and without discrete pseudopodia as well as bicellular cysts. Additionally, the new species possesses numerous endocytobionts and dictyosomes. The latter could not be found in previous EM studies of the genus Sappinia. Standing forms, a character of the species S. pedata, could be formed on older cultures of the new species but appeared extremely seldom. A loose layer of irregular, bent hair-like structures cover the plasma membrane dissimilar to the glycocalyx types as formerly detected in other Sappinia strains.
    Źródło:
    Acta Protozoologica; 2015, 54, 1
    1689-0027
    Pojawia się w:
    Acta Protozoologica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Zastosowanie techniki PCR w badaniach bakteriologicznych
    Applications of PCR in microbiology
    Autorzy:
    Adaszek, L.
    Dziegiel, B.
    Mazurek, L.
    Winiarczyk, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/859637.pdf
    Data publikacji:
    2018
    Wydawca:
    Krajowa Izba Lekarsko-Weterynaryjna
    Tematy:
    bakteriologia
    diagnostyka bakteriologiczna
    metody badan
    lancuchowa reakcja polimerazy
    16S rRNA
    diagnostyka molekularna
    Źródło:
    Życie Weterynaryjne; 2018, 93, 04
    0137-6810
    Pojawia się w:
    Życie Weterynaryjne
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Monitoring the occurrence of bacteria in stored cabbage heads
    Autorzy:
    Eichmeier, Aleš
    Peňázová, Eliška
    Pečenka, Jakub
    Čechová, Jana
    Pokluda, Robert
    Tekielska, Dorota
    Baránek, Miroslav
    Powiązania:
    https://bibliotekanauki.pl/articles/961651.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    bacteria
    cabbage
    identifi cation
    isolation
    mpa medium
    pseudomonas
    sequencing
    16s rrna
    Bacillus
    Opis:
    Twenty-six cabbage heads stored under typical conditions in a storage hall in Moravia, Czech Republic, were tested for the presence of bacteria by the method of isolation from three different parts of the cabbage heads. Isolations were carried out from stalks, inner and superficial leaves. Two samplings were done; in November 2015 and February 2016. Bacterial cultures were sequenced in the part of 16S rRNA region; bacteria were identified according to the sequences obtained. The most prevalent bacteria were of the genus Pseudomonas. Genera: Klebsiella, Erwinia, Pantoea, Bacillus were also identified. The results provided an interesting insight into the bacterial spectrum in stored cabbage heads and their dynamics during storage. Th e nucleotide sequences which were found were saved in GenBank/NCBI under accession numbers KX160104-KX160145.
    Źródło:
    Journal of Plant Protection Research; 2017, 57, 1
    1427-4345
    Pojawia się w:
    Journal of Plant Protection Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Structure and functions of 5S rRNA.
    Autorzy:
    Barciszewska, Mirosława
    Szymański, Maciej
    Erdmann, Volker
    Barciszewski, Jan
    Powiązania:
    https://bibliotekanauki.pl/articles/1044186.pdf
    Data publikacji:
    2001
    Wydawca:
    Polskie Towarzystwo Biochemiczne
    Tematy:
    50S subunit structure
    ribosomal 5S RNA
    5S rRNA
    crystal structure
    Opis:
    The ribosome is a macromolecular assembly that is responsible for protein biosynthesis in all organisms. It is composed of two-subunit, ribonucleoprotein particles that translate the genetic material into an encoded polypeptides. The small subunit is the site of codon-anticodon interaction between the messenger RNA (mRNA) and transfer RNA (tRNA) substrates, and the large subunit catalyses peptide bond formation. The peptidyltransferase activity is fulfilled by 23S rRNA, which means that ribosome is a ribozyme. 5S rRNA is a conserved component of the large ribosomal subunit that is thought to enhance protein synthesis by stabilizing ribosome structure. This paper shortly summarises new results obtained on the structure and function of 5S rRNA.
    Źródło:
    Acta Biochimica Polonica; 2001, 48, 1; 191-198
    0001-527X
    Pojawia się w:
    Acta Biochimica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Genetic characterization of some rhizobial isolates from various legumes
    Autorzy:
    El-Ghany, E.M.A.
    Eissa, R.A.
    Fahmi, A.I.
    Nagaty, H.H.
    El-Zanaty, A.M.
    Powiązania:
    https://bibliotekanauki.pl/articles/2097126.pdf
    Data publikacji:
    2020
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    rhizobia
    morphological
    API 20E and API 20NE
    16S rRNA
    phylogenetic
    Opis:
    In the last few decades, there has been a growing interest in environmentally friendly sustainable agricultural practices, thus increasing the role of biofertilizers such as rhizobia, which can decrease the need for chemical fertilizers, reduce adverse environmental effects, and help to save money. Therefore, information on the distribution and genetic variation of native rhizobial isolates would aid in selecting novel rhizobial strains that could be developed and used as biofertilizers in legume production. This research was conducted to characterize 24 rhizobial isolates from five legumes on morphological, biochemical, and molecular aspects and determine the phylogenetic relationships among them. Rhizobial isolates were obtained from five Egyptian legumes: faba bean, lentil, pea, clover, and soybean. Morphological characterization classified the isolates into fast and slow growers. Biochemical characterization using API 20E and API 20NE systems showed a large diversity, which may reflect their adaptation in different environments. Moreover, molecular detection of the 16S rRNA gene enabled to characterize 19 of them to the species level. Rhizobial isolates from pea, faba bean, clover, and lentil were identified as Rhizobium leguminosarum and those from soybean were identified as Bradyrhizobium japonicum. These data reflected a narrow diversity of rhizobial species in Egypt. A phylogenetic analysis of the 19 isolates confirmed that B. japonicum isolates were divergent from all other isolates. Furthermore, the phylogram revealed that each group of isolates that originated from the root nodule of a certain legume formed a separate subcluster. The obtained data suggested a narrow range of interspecies variations, which is consistent with the idea of the presence of biovars among the species.
    Źródło:
    BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2020, 101, 3; 179-191
    0860-7796
    Pojawia się w:
    BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Application of PCR Reaction for Identification of MHB Bacteria Species
    Zastosowanie reakcji PCR do identyfikacji gatunkowej bakterii MHB
    Autorzy:
    Ząbkiewicz, A.
    Myga-Nowak, M.
    Bandurska, K.
    Paczyńska, J.
    Szybecka, A.
    Krupa, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/205412.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    mycorrhiza
    helper bacteria
    MHB
    16S rRNA gene
    mikoryza
    bakterie wspomagające
    gen 16sRNA
    Opis:
    This study characterizes mycorrhiza helper bacteria (MHB) from selected unpolluted locations as well as subjected to industrial emissions. To determine the species of bacteria isolated from the roots of ectomycorrhizal pine and birch, a method based on the sequence analysis of a 16S rRNA gene was used. The isolated bacteria were initially characterized by available biochemical methods and phenotypic observation. On the selected bacteria representatives isolation of DNA was performed, on which the PCR reaction was carried out. In this way amplified samples were automatically sequenced and the obtained results were compared to public databases. Among the isolated bacteria Pseudomonas fluorescens SBW25 and Burkholderia xenovorans LB400 species were dominant.
    W pracy scharakteryzowano bakterie wspomagające mikoryzę pochodzące z wybranych terenów ekologicznie czystych oraz z terenów poddanych emisji przemysłowej. Przedstawiono wykorzystanie metody opartej na analizie sekwencji genu 16S rRNA do określenia przynależności gatunkowej bakterii wyizolowanych z korzeni ektomikoryzowych sosny i brzozy. Wyizolowane bakterie zostały wstępnie scharakteryzowane przy pomocy dostępnych metod biochemicznych i obserwacji fenotypowej. Dla wybranych przedstawicieli dokonano izolacji DNA, względem którego przeprowadzono reakcję PCR. Powielone w ten sposób próbki automatycznie zsekwencjonowano, a uzyskane sekwencje porównywano w ogólnodostępnych bazach danych. Wśród wyizolowanych bakterii dominowały gatunki Pseudomonas fluorescens SBW25 oraz Burkholderia xenovorans LB400.
    Źródło:
    Archives of Environmental Protection; 2014, 40, 2; 115-122
    2083-4772
    2083-4810
    Pojawia się w:
    Archives of Environmental Protection
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Soil microbiomes of reclaimed and abandoned mines of the Yamal region
    Autorzy:
    Pershina, Elizaveta
    Ivanova, Ekaterina
    Kimeklis, Anastasia
    Zverev, Alexey
    Kichko, Arina
    Aksenova, Tatiana
    Andronov, Evgeny
    Abakumov, Evgeny
    Powiązania:
    https://bibliotekanauki.pl/articles/2041836.pdf
    Data publikacji:
    2020
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    Arctic
    Yamal Peninsula
    microbiome
    soil
    high-throughput sequencing
    16S rRNA
    qPCR
    mining
    reclamation
    Źródło:
    Polish Polar Research; 2020, 41, 1; 95-114
    0138-0338
    2081-8262
    Pojawia się w:
    Polish Polar Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The effects of season and processing technology on the abundance of antibiotic resistance genes in air samples from municipal wastewater treatment and waste management plants
    Autorzy:
    Osińska, Adriana
    Jachimowicz, Piotr
    Niestępski, Sebastian
    Harnisz, Monika
    Korzeniewska, Ewa
    Powiązania:
    https://bibliotekanauki.pl/articles/2032941.pdf
    Data publikacji:
    2021
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    municipal wastewater
    antibiotic resistance
    wastewater treatment plant
    rRNA
    ścieki komunalne
    odporność na antybiotyki
    oczyszczalnia ścieków
    Opis:
    This study aimed to perform a qualitative and a quantitative assessment of the prevalence of genes encoding resistance to beta-lactam, tetracycline, and chloramphenicol antibiotics in samples of DNA isolated from air in a municipal wastewater treatment plant (WWTP) and a municipal waste management plant (WMP). Air samples were collected in the mechanical (MP) and biological (BP) processing units of WWTP and WMP in winter and spring. The samples of air were collected by impingement into PBS solution and subsequently, DNA was isolated. The prevalence of the 16S rRNA gene and ARGs was determined by PCR, and the most abundant ARGs were quantified by qPCR. The highest diversity of the analyzed ARGs was noted in air samples collected in the mechanical processing units of the WWTP (winter) and the WMP (spring). The copy of ARGs varied between treatment units and seasons. ARGs were most abundant in air samples collected in spring in the MP units of both the WWTP and the WMP. The study demonstrated that ARGs are ubiquitous in the air in both WWTPs and WMPs. The presence of ARGs in the air can exert a negative impact on the health of plant employees.
    Źródło:
    Environment Protection Engineering; 2021, 47, 1; 101-114
    0324-8828
    Pojawia się w:
    Environment Protection Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wykorzystanie sekwencji genu rRNA w molekularnej diagnostyce parazytologicznej
    Molecular diagnostic of parasites using rRNA gene sequence
    Autorzy:
    Dlugosz, E
    Wisniewski, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/841440.pdf
    Data publikacji:
    2006
    Wydawca:
    Polskie Towarzystwo Parazytologiczne
    Tematy:
    geny kodujace
    diagnostyka parazytologiczna
    diagnostyka weterynaryjna
    wykorzystanie
    parazytologia
    konferencje
    sekwencja genu
    gen rRNA
    Warszawa konferencja
    Opis:
    Ribosomal RNA (rRNA) is a component of the ribosomes. Eukaryotic ribosomes contain four different rRNA molecules: 18S, 5,8S, 28S and 5S rRNA. rRNA is the most conserved (least variable) gene in all cells. For this reason, genes that encode the rRNA (rDNA) are sequenced to identify an organism's taxonomic group, calculate related groups, and estimate rates of species divergence. Especially the internal transcribed spacers (ITS) are very useful for molecular diagnostic of parasite. They are noncoding regions of DNA sequence that separate genes coding for the 28S, 5.8S, and 18S ribosomal RNAs. These ribosomal RNA (rRNA) genes are highly conserved across taxa while the spacers between them may be species-specific. In this paper authors describe practical using of rRNA gene to parasite diagnostic.
    Źródło:
    Annals of Parasitology; 2006, 52, 4; 263-269
    0043-5163
    Pojawia się w:
    Annals of Parasitology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Diagnosis of Pneumocystis carinii infection by a serum polymerase chain reaction
    Autorzy:
    Golab, E.
    Sobolewska, A.
    Dzbenski, T.
    Bitkowska, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/836353.pdf
    Data publikacji:
    1998
    Wydawca:
    Polskie Towarzystwo Parazytologiczne
    Tematy:
    Pneumocystis carinii
    infection
    serum
    diagnosis
    laboratory diagnosis
    pneumonia
    polymerase chain reaction
    rRNA gene
    T cell
    Źródło:
    Annals of Parasitology; 1998, 44, 3
    0043-5163
    Pojawia się w:
    Annals of Parasitology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    EF1α is a suitable housekeeping gene for RT-qPCR analysis during osteogenic differentiation of mouse bone marrow-derived mesenchymal stem cells
    Autorzy:
    Chen, Xingyun
    Zhang, Bo
    Zhao, Yan
    Liu, Ping
    Zhou, Yuanguo
    Powiązania:
    https://bibliotekanauki.pl/articles/1039535.pdf
    Data publikacji:
    2013
    Wydawca:
    Polskie Towarzystwo Biochemiczne
    Tematy:
    EF1α; RGS4; 18S rRNA; RT-qPCR; RPL 13a; CCG-1986
    Opis:
    The expression of predominant housekeeping genes used in RT-qPCR can vary during development and differentiation. The frequently used housekeeping genes (ACTB, GAPDH, 18S rRNA, EF1α and RPL 13a) were evaluated during an early stage of the osteogenic differentiation of mouse bone marrow-derived mesenchymal stem cells (mMSCs) (under normal conditions or treated with CCG-4986) to identify housekeeping genes whose expression remained constant during osteogenic differentiation. When we used RGS4 mRNA, which was determined as copy number per μg of total RNA, to normalize gene expression, we observed that the relative EF1α expression profile was consistent with RGS4 expression after treatment with CCG-4986. All the relative expression profiles of the EF1α, 18S rRNA, and RPL13a housekeeping genes were consistent with RGS4 profiles determined by measuring mRNA copies under normal osteogenic differentiation conditions. The expression profiles calibrated by ACTB and GAPDH were not consistent with those determined using mRNA copy number in untreated cells or cells treated with CCG-4986 under osteogenic differentiation conditions. Under normal osteogenic differentiation conditions, EF1α, 18S rRNA, and RPL 13a are suitable housekeeping genes for RT-qPCR analysis. However, EF1α is the only suitable gene upon CCG-4986 treatment.
    Źródło:
    Acta Biochimica Polonica; 2013, 60, 3; 381-386
    0001-527X
    Pojawia się w:
    Acta Biochimica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wykorzystanie sekwencji genu rRNA w molekularnej diagnostyce parazytologicznej
    Molecular diagnostic of parasites using rRNA gene sequence
    Autorzy:
    Długosz, E.
    Wiśniewski, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/2144424.pdf
    Data publikacji:
    2006
    Wydawca:
    Polskie Towarzystwo Parazytologiczne
    Tematy:
    geny kodujace
    diagnostyka parazytologiczna
    diagnostyka weterynaryjna
    wykorzystanie
    parazytologia
    konferencje
    sekwencja genu
    gen rRNA
    Warszawa konferencja
    Opis:
    Ribosomal RNA (rRNA) is a component of the ribosomes. Eukaryotic ribosomes contain four different rRNA molecules: 18S, 5,8S, 28S and 5S rRNA. rRNA is the most conserved (least variable) gene in all cells. For this reason, genes that encode the rRNA (rDNA) are sequenced to identify an organism's taxonomic group, calculate related groups, and estimate rates of species divergence. Especially the internal transcribed spacers (ITS) are very useful for molecular diagnostic of parasite. They are noncoding regions of DNA sequence that separate genes coding for the 28S, 5.8S, and 18S ribosomal RNAs. These ribosomal RNA (rRNA) genes are highly conserved across taxa while the spacers between them may be species-specific. In this paper authors describe practical using of rRNA gene to parasite diagnostic.
    Źródło:
    Wiadomości Parazytologiczne; 2006, 52, 4; 263-269
    0043-5163
    Pojawia się w:
    Wiadomości Parazytologiczne
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Microbial community during the initial stage of biologically active carbon filters’ operation and its role in organic matter removal from water
    Zbiorowisko drobnoustrojów w początkowej fazie pracy biologicznie aktywnych filtrów węglowych i ich rola w usuwaniu materii organicznej z wody
    Autorzy:
    Mądrecka-Witkowska, Beata
    Komorowska-Kaufman, Małgorzata
    Pruss, Alina
    Holc, Dorota
    Trzebny, Artur
    Dabert, Mirosława
    Powiązania:
    https://bibliotekanauki.pl/articles/27311566.pdf
    Data publikacji:
    2023
    Wydawca:
    Polska Akademia Nauk. Czasopisma i Monografie PAN
    Tematy:
    biofilm formation
    drinking water
    biodegradation
    biologically active carbon filters
    PICRUSt analysis
    16S rRNA-profiling
    Opis:
    Filtration through biologically active carbon (BAC) filters is an effective method of organic matter removal during drinking water treatment. In this study, the microbial community in the initial period of filters’ operation, as well as its role in the organic matter removal were investigated. Research was carried out in a pilot scale on two BAC filters (Filter 1 and Filter 2) which were distinguished by the type of inflowing water. It was observed that the number of heterotrophic plate count bacteria and total microbial activity were significantly higher in water samples collected from Filter 2, which received an additional load of organic matter and microorganisms. Despite the differences in the values of chemical and microbiological parameters of inflowing water, the composition of the microbiome in both filters was similar. The predominant taxon was a bacterium related to Spongiibacter sp. (Gammaproteobacteria) (>50% of relative abundance). In both filters, the efficiency of organic matter removal was at the same level, and the composition and relative frequency of predicted functional pathways related to metabolism determined using PICRUSt (Phylogenetic Investigation of Communities by Reconstruction of Unobserved States Software) at level 3 of KEGG (Kyoto Encyclopedia of Genes and Genomes) Orthology – were also similar. The study demonstrated that a 40-day period of filter operation after filling with virgin granular activated carbon, was sufficient to initiate biofilm development. It was proved, that during the initial stage of filter operation, microorganisms capable of biodegradation of various organic compounds, including xenobiotics like nitrotoluene, colonized the filters.
    Filtracja przez biologicznie aktywne filtry węglowe (BAF) jest skuteczną metodą usuwania materii organicznej podczas uzdatniania wody przeznaczonej do spożycia przez ludzi. W niniejszej pracy zbadano zbiorowisko drobnoustrojów w początkowym okresie eksploatacji filtrów oraz jego rolę w usuwaniu materii organicznej z wody. Badania przeprowadzono w skali pilotowej na dwóch filtrach BAF (Filtr 1 i Filtr 2) różniących się składem dopływającej wody. Stwierdzono, że liczba bakterii heterotroficznych i całkowita aktywność mikrobiologiczna były znacząco większe w próbkach wody pobranych z Filtra 2 – zasilanego wodą wzbogaconą o dodatkowy ładunek materii organicznej i mikroorganizmów. Pomimo różnic w wartościach parametrów chemicznych i mikrobiologicznych dopływającej wody, skład mikrobiomu w filtrach był podobny. W obu filtrach dominującym taksonem była bakteria spokrewniona z Spongiibacter sp. (Gammaproteobacteria) (>50% względnej liczebności). W obydwóch filtrach efektywność usuwania materii organicznej była na podobnym poziomie oraz skład i względna częstość występowania przewidywanych szlaków funkcjonalnych związanych z metabolizmem, oznaczone przy użyciu PICRUSt (Phylogenetic Investigation of Communities by Reconstruction of Unobserved States Software) na poziomie 3 KEGG (Kyoto Encyclopedia of Genes and Genomes) Orthology były również zbliżone. Badania wykazały, że 40-dniowy okres pracy filtrów po napełnieniu świeżym granulowanym węglem aktywnym był wystarczający do rozwoju biofilmu. Udowodniono, że w początkowym okresie pracy złoża filtracyjne zasiedlane były przez mikroorganizmy zdolne do biodegradacji różnych związków organicznych, w tym ksenobiotyków, np. nitrotoluenu.
    Źródło:
    Archives of Environmental Protection; 2023, 49, 3; 67--77
    2083-4772
    2083-4810
    Pojawia się w:
    Archives of Environmental Protection
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Isolation and characterization of biosurfactants-producing bacteria isolated from palm oil industry and evaluation for biosurfactants production using low-cost substrates
    Autorzy:
    Saisa-Ard, K.
    Manerrat, S.
    Saimmai, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/81283.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    isolation
    biosurfactant
    phylogenetic analysis
    palm oil
    contaminated soil
    surface tension
    phylogenetic position
    16S rRNA gene
    Źródło:
    BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2013, 94, 3
    0860-7796
    Pojawia się w:
    BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Biodiversity and antibiotic resistance of bacteria isolated from tap water in Wrocław, Poland
    Autorzy:
    Leginowicz, M.
    Siedlecka, A.
    Piekarska, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/207741.pdf
    Data publikacji:
    2018
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    water supply
    drinking water
    biological diversity
    16S rRNA gene
    systemy zasilania
    woda pitna
    różnorodność biologiczna
    Opis:
    Microbial contamination and biodiversity were determined for the drinking water samples collected from selected points of the water supply system in Wroclaw, Poland. All tested samples met the requirements of Polish law, i.e., the Regulation of the Minister of Health. However, the antibiotic resistant bacteria were found. The correlation between the distance of sampling points from water treatment plants and their microbial contamination was not established. Nevertheless, the Na Grobli treatment plant seemed to produce water of higher microbial quality than the Mokry Dwor treatment plant at the moment of sampling. The identification of representative isolates was performed with 16S rRNA gene sequencing and MALDI-TOF mass spectrometry and the results of these two methods were compared, indicating some discrepancies. Nevertheless, bacteria dwelling in drinking water in Wroclaw belonged to the phyla Actinobacteria, Proteobacteria (alpha-, beta-, gamma-Proteobacteria) and Firmicutes . The determination of antibiotic resistance profiles showed that 12 from 17 tested isolates revealed resistance to at least one antibiotic and two strains were multi-drug-resistant.
    Źródło:
    Environment Protection Engineering; 2018, 44, 4; 85-98
    0324-8828
    Pojawia się w:
    Environment Protection Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Molecular characterisation of Bulinus snails - intermediate hosts of schistosomes in Ogun State, south-western Nigeria
    Autorzy:
    Akinwale, O.
    Oso, O.
    Salawu, O.
    Odaibo, A.
    Tang, P.
    Chen, T.-W.
    Gyang, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/84247.pdf
    Data publikacji:
    2015
    Wydawca:
    Uniwersytet Mikołaja Kopernika. Wydział Biologii i Ochrony Środowiska. Stowarzyszenie Malakologów Polskich
    Tematy:
    molecular characteristics
    Bulinus
    species identification
    snail
    host
    intermediate host
    schistosome
    rRNA gene
    schistosomiasis
    Ogun State
    Nigeria
    Źródło:
    Folia Malacologica; 2015, 23, 2
    1506-7629
    Pojawia się w:
    Folia Malacologica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Bacterial species identification
    Autorzy:
    Kshikhundo, Ronald
    Itumhelo, Shayalethu
    Powiązania:
    https://bibliotekanauki.pl/articles/1153736.pdf
    Data publikacji:
    2016
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    16S rRNA gene
    Bacteria
    Biolog
    Gram staining
    MALDI-TOF MS
    RiboPrinter
    computational tools
    fatty acids
    identification
    metagenomics
    morphology
    Opis:
    The traditional methods of bacterial identification are based on observation of either the morphology of single cells or colony characteristics. However, the adoption of newer and automated methods offers advantage in terms of rapid and reliable identification of bacterial species. The review provides a comprehensive appreciation of new and improved technologies such fatty acid profiling, sequence analysis of the 16S rRNA gene, matrix-assisted laser desorption/ionization time-of-flight (MALDI-TOF), metabolic finger profiling using BIOLOG, ribotyping, together with the computational tools employed for querying the databases that are associated with these identification tools and high throughput genomic sequencing in bacterial identification. It is evident that with the increase in the adoption of new technologies, bacterial identification is becoming easier.
    Źródło:
    World News of Natural Sciences; 2016, 3; 26-38
    2543-5426
    Pojawia się w:
    World News of Natural Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of short- and long-lasting chilling on pre-rRNA synthesis and transport in root meristematic cells of three soybean cultivars
    Autorzy:
    Stepinski, D
    Powiązania:
    https://bibliotekanauki.pl/articles/58853.pdf
    Data publikacji:
    2003
    Wydawca:
    Polskie Towarzystwo Botaniczne
    Tematy:
    transport
    nucleolus
    meristematic cell
    Mazowia cultivar
    soybean
    rRNA synthesis
    H-uridine incorporation
    acclimation
    chilling
    Progres cultivar
    root
    Polan cultivar
    Opis:
    Autoradiographic studies of 3H-uridine incorporation (20-min incubation) and dynamics of radioactive particle translocation from nucleolus into cytoplasm (following 80-min postincubation in non-radioactive medium) in root meristematic cells of soybean have been carried out. The experiment was performed with plants subjected to 4-day acclimation in chilling or subjected to 2-hour cold stress and control plants. Three cultivars of soybean: Mazowia, Polan and Progres (cultivated in Poland) were used in the experiment. It has been shown that in control conditions the greatest number of RNA precursor is incorporated into nucleoli after 20-min incubation. Following 80-min postincubation cytoplasm is the most radioactive area of the cell - this mainly testifies to dynamic translocation of radioactive ribosome subunits from nucleolus into cytoplasm. In chilling conditions the reduction of 3H-uridine incorporation into cells occurs, as compared to control conditions. Plants subjected to a 4-day acclimation incorporate the radioactive precursor more intensively than plants subjected to cold stress. Following 80-min postincubation - in the case of acclimated plants - the nucleolus is the most radioactive area of the cell, which testifies to accumulation of pre-rRNA in it. After the cold stress cytoplasm is more radioactive than the nucleolus. In all three cultivars the processes of synthesis and transport of pre-rRNA particles are similar, only their intensity is different. Morphometric measurements of nucleoli in all cultivars subjected to 4-day chilling have shown that root cell nucleoli are larger than those in control. This phenomenon can be connected with stronger inhibition of rRNA transport than its synthesis.
    Źródło:
    Acta Societatis Botanicorum Poloniae; 2003, 72, 4
    0001-6977
    2083-9480
    Pojawia się w:
    Acta Societatis Botanicorum Poloniae
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Anaplasma phagocytophilum infection of red foxes [Vulpes vulpes]
    Autorzy:
    Karbowiak, G
    Vichova, B.
    Majlathova, V.
    Hapunik, J.
    Pet'ko, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/50073.pdf
    Data publikacji:
    2009
    Wydawca:
    Instytut Medycyny Wsi
    Tematy:
    Polska
    Mazovia region
    parasite
    Anaplasma phagocytophilum
    infection
    animal disease
    red fox
    Vulpes vulpes
    16S rRNA gene
    msp4 gene
    Źródło:
    Annals of Agricultural and Environmental Medicine; 2009, 16, 2; 299-300
    1232-1966
    Pojawia się w:
    Annals of Agricultural and Environmental Medicine
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Application of molecular techniques to taxonomic studies
    Autorzy:
    Lesicki, A.
    Szweykowska-Kulinska, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/84088.pdf
    Data publikacji:
    1999
    Wydawca:
    Uniwersytet Mikołaja Kopernika. Wydział Biologii i Ochrony Środowiska. Stowarzyszenie Malakologów Polskich
    Tematy:
    application
    molecular technique
    taxonomy
    genome organization
    phylogenetic analysis
    rRNA gene
    animal genome
    mitochondrial genome
    nuclear genome
    DNA hybridization
    mollusc
    phylogenesis
    Źródło:
    Folia Malacologica; 1999, 07, 4
    1506-7629
    Pojawia się w:
    Folia Malacologica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Morphological, genetic, chemical and ecophysiological characterisation of two Microcystis aeruginosa isolates from the Vistula Lagoon, Southern Baltic
    Autorzy:
    Mazur-Marzec, H.
    Browarczyk-Matusiak, G.
    Forycka, K.
    Kobos, J.
    Plinski, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/48489.pdf
    Data publikacji:
    2010
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    Microcystis aeruginosa
    Cyanoprokaryota
    microcystin
    mcy gene
    morphology
    Vistula Lagoon
    Baltic Sea
    eutrophic water
    bloom
    16S rRNA sequence
    internal transcribed spacer
    Opis:
    The Vistula Lagoon (southern Baltic Sea) is a shallow and highly eutrophic water body, with frequent blooms of cyanobacteria dominated by Microcystis and Anabaena species. Two Microcystis strains, MK10.10 and MAKR0205, isolated from the lagoon were characterised in this work. The morphology of the isolates differed significantly with respect to cell size and their ability to form aggregates. Based on the 16S rRNA sequence and 16S-23S internal transcribed spacer (ITS) sequence, both isolates were classified as Microcystis aeruginosa. However, only one isolate, MK10.10, possessed the mcy genes responsible for microcystin biosynthesis and only this strain produced microcystins. The effects of environmental factors, such as light, temperature and salinity, on toxin production turned out to be minor. Under the culture conditions used in the experiments, the biomass of the toxic MK10.10 was always lower. Hybrid quadrupole-time-of-flight liquid chromatography/tandem mass spectrometry (QTOF-LC/MS/MS) was used to elucidate the structure of the microcystin (MC) variants produced by MK10.10. Based on molecular ion and fragmentation spectra, the toxins were identified as MC-LR, MC-VR and MC- HIlR. Our study confirmed that some morphological criteria could be useful in preliminarily assessing the potential toxicity of a Microcystis bloom.
    Źródło:
    Oceanologia; 2010, 52, 1; 127-146
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    16S microbial phylogeny of multifunctional plant-growth-promoting rhizobacteria from the rhizosphere of maize (Zea mays L.) for agricultural soil fortification
    Autorzy:
    Reena, J.
    Jubu, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/79870.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    maize
    Zea mays
    rhizosphere
    agricultural soil
    Fusarium moniliforme
    16S rRNA sequence
    indoloacetic acid
    siderophore
    biological control
    plant growth promoting rhizobacteria
    Źródło:
    BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2019, 100, 2
    0860-7796
    Pojawia się w:
    BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Bacterial community structure influenced by Coscinodiscus sp. in the Vistula river plume
    Autorzy:
    Ameryk, A.
    Hahnke, R.L.
    Gromisz, S.
    Kownacka, J.
    Zalewski, M.
    Szymanek, L.
    Calkiewicz, J.
    Dunalska, J.
    Harder, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/47978.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    planktonic bacteria
    Coscinodiscus
    phytoplankton community
    primary production
    Vistula River
    river plume
    Baltic Sea
    terminal restriction fragment length polymorphism
    DNA extraction
    16S rRNA gene
    dissolved organic matter
    Źródło:
    Oceanologia; 2014, 56, 4
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Prevalence of Anaplasma phagocytophilum in Ixodes ricinus ticks determined by polymerase chain reaction with two pairs of primers detecting 16S rRNA and ankA genes
    Autorzy:
    Chmielewska-Badora, J
    Zwolinski, J.
    Cisak, E.
    Wojcik-Fatla, A.
    Buczek, A.
    Dutkiewicz, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/51023.pdf
    Data publikacji:
    2007
    Wydawca:
    Instytut Medycyny Wsi
    Tematy:
    Lublin region
    Polska
    pathogen
    Ixodes ricinus
    Eastern Poland
    tick
    determination
    animal pathogen
    human pathogen
    ankA gene
    16S rRNA gene
    granulocytic anaplasmosis
    bacteria
    Anaplasma phagocytophilum
    polymerase chain reaction
    Opis:
    A total of 684 Ixodes ricinus ticks (321 nymphs, 184 males, and 179 females) were collected by fl agging lower vegetation in 6 forest districts located on the territory of Lublin province (eastern Poland). Ticks were examined by polymerase chain reaction (PCR) method for the presence of Anaplasma phagocytophilum DNA with two pairs of primers: EHR521/EHR747 for detecting 16S rRNA gene, and LA6/LA1 for detecting ankA gene. To study the relationship between infection in ticks and people occupationally exposed to tick bite, blood serum samples of 261 forestry workers employed in the same forest districts were examined by immunofl uorescence method for the presence of specifi c antibodies against A. phagocytophilum. A total of 70 ticks out of 684 examined (10.2%) showed the presence of A. phagocytophilum 16S rRNA gene. The prevalence of infection was signifi cantly dependent on tick’s stage (χ2=49.2, p<0.00001) and geographical locality (χ2=34.4, p<0.00001). The percentage of I. ricinus females infected with A. phagocytophilum (24.6%) was signifi cantly greater compared to males (6.5%) and nymphs (4.4%) (p<0.00001). Only 19 ticks out of 684 examined (2.8%) showed the presence of A. phagocytophilum ankA gene, signifi cantly less compared to 16S rRNA gene (p<0.00001). The prevalence of infection demonstrated by the presence of ankA gene was also signifi cantly dependent on tick’s stage (χ2=23.6, p<0.00001) but not on locality (χ2=9.8, p=0.082). A signifi cant correlation was found between the presence of A. phagocytophilum 16S rRNA gene in I. ricinus female ticks from the particular forest districts and the serologic response to A. phagocytophilum of forestry workers employed in the same districts (p<0.05). No signifi cant correlation was found between the presence of A. phagocytophilum ankA gene in I. ricinus ticks and serologic response of exposed workers. In conclusion, detection of A. phagocytophilum infection in ticks by PCR with the use of EHR521/EHR747 primers detecting 16S rRNA gene is signifi cantly more sensitive compared to LA6/LA1 primers detecting ankA gene.
    Źródło:
    Annals of Agricultural and Environmental Medicine; 2007, 14, 2
    1232-1966
    Pojawia się w:
    Annals of Agricultural and Environmental Medicine
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Use of molecular and conventional techniques to identify and analyze genetic variability of Rhizoctonia spp. isolates
    Zastosowanie metod molekularnych i konwencjonalnych do identyfikacji i analizy zroznicowania genetycznego izolatow Rhizoctonia
    Autorzy:
    Irzykowska, L
    Zoltanska, E
    Bocianowski, J
    Powiązania:
    https://bibliotekanauki.pl/articles/28502.pdf
    Data publikacji:
    2005
    Wydawca:
    Polskie Towarzystwo Botaniczne
    Tematy:
    pathogenicity
    internal transcribed spacer region
    rRNA gene
    random amplified polymorphic DNA
    genetic variability
    Rhizoctonia
    isolate
    Rhizoctonia cerealis
    Rhizoctonia solani
    molecular technique
    conventional technique
    stem infection
    leaf infection
    plant disease
    Opis:
    In this study the pathogenicity of Rhizoctonia spp. isolates towards wheat seedlings in laboratory and greenhouse conditions was evaluated. In both experiments seven features were examined: plant height, roots weight, the percentage of infected stems and leaf sheaths and also the degree of stem and leaf sheaths infection. Isolates R1, R29, R39 and R59 were the most pathogenic. Percentage of infected stems ranged from 25.3 to 82.5 and roots from 35 to 82.3. The amplification of internal transcribed spacer regions (ITS1 and ITS2) between 18S, 5.8S and 28S rRNA genes and sequence analysis of these regions have been shown to be sufficiently variable to resolve two Rhizoctonia species. Random amplified polymorphic DNA (RAPD) was used to assess genetic variability among isolates. The suitability of RAPD method for isolates differentiation at intraspecific level was shown. Using seven arbitrary primers in polymerase chain reaction (PCR) thirty-three RAPD markers were generated. Clustering analysis from RAPD data resolved two groups of R. cerealis isolates at the 36% similarity level. Moreover, significant associations between molecular markers and pathogenicity of R. cerealis isolates were found.
    W prezentowanych badaniach oceniano patogeniczność izolatów Rhizoctonia spp. w stosunku do siewek pszenicy w warunkach laboratoryjnych i szklarniowych. W obu doświadczeniach badano 7 cech: wysokość roślin, masę korzeni, procent porażonych łodyg i pochew liściowych oraz stopień porażenia łodygi i pochwy liściowej. Najbardziej patogeniczne okazały się izolaty R1, R29, R39 i R59. Procent porażonych łodyg mieścił się w zakresie od 25.3 do 82.5, a procent porażonych korzeni od 35 do 82.3. Wykazano, że amplifikacja wewnętrznych transkrybowanych sekwencji rozdzielających (ITS1 i ITS2) geny kodujące 18S, 5.8S i 28S rRNAoraz analiza sekwencyjna tych regionów wystarczyły do rozróżnienia dwóch gatunków rodzaju Rhizoctonia. Losowo amplifikowany polimorficzny DNA (RAPD) wykorzystano do oceny zróżnicowania genetycznego między izolatami. Potwierdzono użyteczność metody RAPD w różnicowaniu izolatów na poziomie wewnątrzgatunkowym. Po zastosowaniu siedmiu losowych starterów w łańcuchowej reakcji polimerazy (PCR) uzyskano 33 markery RAPD. W wyniku analizy klasterów danych uzyskanych w reakcjach RAPD wyodrębniono dwie grupy izolatów R. cerealis na poziomie podobieństwa równym 36%. Ponadto, znaleziono istotne związki pomiędzy markerami molekularnymi a patogenicznością izolatów R. cerealis.
    Źródło:
    Acta Agrobotanica; 2005, 58, 2; 19-32
    0065-0951
    2300-357X
    Pojawia się w:
    Acta Agrobotanica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    FISH mapping of 18S-5.8S-26S rRNA genes and fluorochrome banding in the triploid viviparous onion Allium x cornutum Clementi ex Visiani, 1842
    Autorzy:
    Lepen, I.
    Puizina, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/19898.pdf
    Data publikacji:
    2011
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    rRNA gene
    fluorochrome banding
    triploid
    Allium cepa var.viviparum
    fluorescence in situ hybridization
    FISH zob.fluorescence in situ hybridisation
    mapping
    onion
    Allium
    viviparous onion
    Allium cepa var.proliferum
    Opis:
    Triploid viviparous onions [Allium × cornutum Clementi ex Visiani 1842, syn Allium cepa L. var. viviparum Metzg. (ALEF.), auct.] (2n = 3x = 24), are known in some countries only as rare relict crops. In other parts of the world they are still traditionally or even commercially cultivated. In previous cytogenetic studies of the Croatian triploid viviparous onion Ljutika, Giemsa C-banding, chromosome pairing analysis during meiosis, and genomic hybridization in situ indicated a complex hybrid with highly heterozygous karyotype structure, with possible triparental genome organization. This study continues an analysis of the karyotype structure of Ljutika. Staining with fluorochromes CMA3 (Chromomycin A3) and DAPI (4,6-diamidino-2-phenylindole) confirmed previous results from Giemsa C-banding and revealed GC-rich heterochromatic regions associated mainly with chromosome ends and nucleolus organizing regions (NORs), and only a few interstitial bands. FISH mapping of the ribosomal 18S-5.8S-26S genes revealed two major rDNA signals on the short arms of two subtelocentric satellite chromosomes in almost all metaphase plates of Ljutika. The largest subtelocentric chromosome lacked rDNA signals. A significantly smaller rDNA signal was occasionally located on one small submetacentric chromosome. These results are in agreement with previously published results from identification of NORs by silverstaining technique, which confirmed a maximum three nucleoli in interphase nuclei. We discuss the molecular mechanisms underlying rearrangements and activity of ribosomal genes in the triploid karyotype.
    Źródło:
    Acta Biologica Cracoviensia. Series Botanica; 2011, 53, 1
    0001-5296
    Pojawia się w:
    Acta Biologica Cracoviensia. Series Botanica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-48 z 48

      Ta witryna wykorzystuje pliki cookies do przechowywania informacji na Twoim komputerze. Pliki cookies stosujemy w celu świadczenia usług na najwyższym poziomie, w tym w sposób dostosowany do indywidualnych potrzeb. Korzystanie z witryny bez zmiany ustawień dotyczących cookies oznacza, że będą one zamieszczane w Twoim komputerze. W każdym momencie możesz dokonać zmiany ustawień dotyczących cookies