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    Wyświetlanie 1-12 z 12
    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:
    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:
    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:
    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:
    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:
    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:
    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:
    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:
    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:
    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:
    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:
    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
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