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Tytuł:
Evaluation of antioxidant potential of pigments extracted from Bacillus spp. and Halomonas spp. isolated from mangrove rhizosphere
Autorzy:
Patkar, S.
Shinde, Y.
Chindarkar, P.
Chakraborty, P.
Powiązania:
https://bibliotekanauki.pl/articles/2096392.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
biopigment
antioxidant
SPF
rhizosphere soil
Opis:
The present study aimed to isolate different pigment-producing bacteria from the mangrove rhizosphere habitat and to extract their pigments for evaluating their antioxidant and sun-protective properties. Three pigment-producing bacterial cultures were isolated from soil samples and were identified by morphological analysis and 16S rDNA sequencing. The pigments were isolated by the solvent extraction method and named as MZ (Pink), Orange, and Yellow. They were characterized by Fourier Transform Infrared (FTIR) and UV-Vis spectroscopy. The sun protection factor (SPF) values of these pigments were then determined using the Mansur equation. The total polyphenol content was estimated by the Folin-Ciocâlteu method, and the antioxidant activity of the pigments was determined using DPPH (2,2-diphenyl-1-picrylhydrazyl), FRAP (ferric reducing antioxidant power), and ABTS (2,2-azinobis-3-ethyl-enzothiazoline-6-sulfonic acid) assays. The in vitro antioxidant potential of the pigments in the presence of oxidative stress (H2O2) was confirmed in the mouse macrophage cell line RAW264.7 by using the MTT (3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide) assay. The pigment-producing bacterial isolates were identified as Bacillus infantis (MZ), Halomonas spp. (Orange), and Bacillus spp. (Yellow). The pigments were found to be carotenoid in nature, and the SPF values were in the range of 3.99 to 5.22. All three pigments had high polyphenol content (22 to 48 μg tannic acid equivalent) and showed significant antioxidant properties in both chemical and cell line-based studies. The results of this study indicate that these pigments have the potential to be used as an antioxidant agent and can be further developed as a pharmaceutical compound.
Źródło:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2021, 102, 2; 157-169
0860-7796
Pojawia się w:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Possibility of Detecting Species from the Phytophthora Genus in the Rhisosphere Soil of oak Trees Using Visual Crown Assessment
Autorzy:
Tkaczyk, M.
Milenković, I.
Kubiak, K. A.
Powiązania:
https://bibliotekanauki.pl/articles/213621.pdf
Data publikacji:
2014
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Lotnictwa
Tematy:
Phytophthora
oak decline
soil
rhizosphere soil
Opis:
This paper explains biological background of the project. Oak decline in Polish stands in recent years has become a serious problem. Symptoms of disease like thinning crowns, yellowing of the leaves or the appearance of dark exudates on the trunks are observed. Such symptoms are characteristic for pathogenic organisms of the genus Phytophthora. Identification and confirmation of the presence of these pathogens is difficult. That is why we have tried to estimate the presence of pathogens in the rhizosphere soil in oak stands on the basis of visual assessment of crowns trees with symptoms typical of Phytophthora infection.
Źródło:
Prace Instytutu Lotnictwa; 2014, 4 (237) December 2014; 92-101
0509-6669
2300-5408
Pojawia się w:
Prace Instytutu Lotnictwa
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Dynamics of Changes in Microorganisms in Rhizosphere Zone of Lawn Grasses in the Second Year After the Application of Sewage Sludge
Autorzy:
Wołejko, E.
Wydro, U.
Łoboda, T.
Piekut, J.
Powiązania:
https://bibliotekanauki.pl/articles/123513.pdf
Data publikacji:
2015
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
sewage sludge
grass mixtures
microorganisms
rhizosphere
Opis:
The aim of the study was to present the dynamics of changes in the number of selected microorganisms in the rhizosphere zone of grasses two years after the application of sewage sludge. The study was conducted on four specially prepared research plots along the main roads in Bialystok. Three doses of sewage sludge were applied: 0 (control), 7.5 and 15 kg/m2. Then the plots were seeded with two mixtures of lawn grasses: Eko and Roadside. Samples of roots with soil were collected three times during the vegetation period of 2012 (April, July and October) and assayed for the total number of bacteria, the number of Gram-negative bacteria, the number of Pseudomonas fluorescens, the number of amylolytic and proteolytic bacteria. Microbiological tests of the rhizosphere showed seasonal variations of all investigated microbiological parameters. The greatest average of the total number of bacteria, Gram-negative bacteria and proteolytic bacteria was observed on the plots in April, amylolytic bacteria in July while in the case of Pseudomonas fluorescens was observed on the plots in October. The time of measurement had the biggest impact on the number of microorganisms. An increased number of microorganisms was observed on all plots in April. Whereas, the fertilization with sewage sludge and grass mixtures did not affect the microbiological parameters.
Źródło:
Journal of Ecological Engineering; 2015, 16, 4; 126-132
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of sewage sludge on the chosen soil properties and microbiological parameters of urban grass mixtures rhizosphere
Autorzy:
Wydro, U.
Wołejko, E.
Łoboda, T.
Matejczyk, M.
Butarewicz, A.
Powiązania:
https://bibliotekanauki.pl/articles/123835.pdf
Data publikacji:
2015
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
sewage sludge
rhizosphere
urban soil
microorganisms
Opis:
The aim of this study was to analyse the influence of municipal sewage sludge on selected microbiological parameters in the rhizosphere of lawn grass mixtures. Four experiments on the lawns along the main roads of Bialystok were founded. The factors in the experiment were three doses of sewage sludge (0 – control; 7.5 and 15 kg·m-2) and two grass mixtures (Eko and Roadside). The studied parameters were monitored twice during 2011 vegetation season by determining the total number of soil microorganisms, the total number of Gram-negative bacteria, the number of bacteria of Pseudomonas fluorescens species, the number of amylolytic and proteolytic bacteria. Sewage sludge amended to soil resulted in a change of physical-chemical properties of soil. The sewage sludge application to soil influenced significantly the number of proteolytic and Gram-negative bacteria.
Źródło:
Journal of Ecological Engineering; 2015, 16, 1; 171-177
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of microbially enriched mineral fertilizers on the composition of rhizosphere microorganisms of Thuja occidentalis
Autorzy:
Sas Paszt, Lidia
Smolińska, Urszula
Treder, Jadwiga
Szczech, Magdalena
Kowalska, Beata
Trzciński, Paweł
Głuszek, Sławomir
Lisek, Anna
Derkowska, Edyta
Frąc, Mateusz
Powiązania:
https://bibliotekanauki.pl/articles/2148193.pdf
Data publikacji:
2021-12-30
Wydawca:
Instytut Uprawy Nawożenia i Gleboznawstwa – Państwowy Instytut Badawczy
Tematy:
Thuja occidentalis cv. Brabant
rhizosphere
microorganisms
biofertilizers
Opis:
Rhizosphere is a region of the strongest interactions be- tween plants, soil and microorganisms, which play an important role in plant development. Due to a number of interdependencies, they are main factors determining the health and proper growth of plants. All methods used in agriculture that promote the growth of microbial populations and their biodiversity are beneficial both for cultivated plants and for the environment. Thuja occidentalis cv. Brabant, is a very popular plant in Poland. In the study the effect of mineral fertilizers: Urea, Polifoska 6, Super Fos Dar 40, enriched with beneficial strains of fungi and bacteria, on selected groups of soil microorganisms was evaluated. The fungi Asper- gillus niger and Purpureocillium lilacinum and bacteria Bacillus sp., Bacillus amyloliquefaciens, Paenibacillus polymyxa, which have been shown to have beneficial effects on plant growth in previous works, have been used as additives to bio-fertilizers. The use of mineral fertilizers Urea, Polifoska 6 and Super Fos Dar 40, enriched with selected strains of fungi and bacteria had a beneficial effect on the development of microorganisms in the rhizosphere of the Thuja occidentalis, especially in the second year of research.
Źródło:
Polish Journal of Agronomy; 2021, 47; 49-57
2081-2787
Pojawia się w:
Polish Journal of Agronomy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Estimation of soil fertility from organic plantations strawberries and raspberries in the south-eastern Poland
Ocena zasobności gleb z ekologicznych plantacji truskawki i maliny w południowo-wschodniej Polsce
Autorzy:
Jarosz, Z.
Krawiec, P.
Michalojc, Z.
Pitura, K.
Dzida, K.
Powiązania:
https://bibliotekanauki.pl/articles/270293.pdf
Data publikacji:
2017
Wydawca:
Centralny Ośrodek Badawczo-Rozwojowy Aparatury Badawczej i Dydaktycznej, COBRABiD
Tematy:
PH
macronutrients
rhizosphere
salinity
makroskładniki
ryzosfera
zasolenie
Opis:
Studies conducted in the years 2014-2015 were designed to evaluate of soil fertility from 22 organic farms specializing in the cultivation of strawberries and raspberries from the south-eastern Poland. Evaluated soil sampled in 56 different plantation of strawberries and raspberries. Soil pH was determined in distilled water (pHH2O). Soil fertility determined in the extract of 0.03 M CH3COOH and the content of available forms of nitrate nitrogen (N-NO3), phosphorus (P-PO4), potassium (K), calcium (Ca) and magnesium (Mg) were expressed in mg dm-3 as well as in mg 100g-1 dry soil. In addition in soil samples salinity was determined expressed as g NaCl dm-3. Analysis of the results obtained in the studies showed that the pH of the soils studied (pHH2O) was in the range 4.60-7.60. The content of macronutrients in the soils contained in compartments (mg dm-3): ˂10.0-19.8 N-NO3, 2.0-33.0 P-PO4, 10.0-239.0 K, 107.0-3930.0 Ca, 26.0-134.0 Mg.
Badania przeprowadzone w latach 2014-2015 miały na celu ocenę zasobności gleb w 22 gospodarstwach ekologicznych specjalizujących się w uprawie truskawki i maliny, zlokalizowanych w południowo-wschodniej Polsce. Badaniom poddano 56 prób glebowych z plantacji truskawki i maliny. Odczyn gleby (pH) oznaczono w wodzie destylowanej (pH H2O). Zasobność gleby określano w ekstrakcie 0,03 M CH3 COOH, a zawartości dostępnych form azotu azotanowego (N-NO3), fosforu (P-PO4), potasu (K), wapnia (Ca) i magnezu (Mg) wyrażono w mg∙dm-3, jak również w mg∙100g-1suchej gleby. Ponadto w próbkach glebowych określono poziom zasolenia wyrażony jako g NaCl dm-3. Analiza wyników uzyskanych w badaniach wykazała, że odczyn badanych gleb (pH H2O) zawierał się w zakresie od 4,60 do 7,60. Zawartość makroskładników w badanych próbkach gleb zawierała się w przedziale (mg∙dm-3): ≤10,0-19,8 N-NO3, 2,0-33,0 P-PO4, 10,0-239,0 K, 107,0-3930,0 Ca, 26,0-134,0 Mg.
Źródło:
Aparatura Badawcza i Dydaktyczna; 2017, 22, 3; 153-158
2392-1765
Pojawia się w:
Aparatura Badawcza i Dydaktyczna
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Screening and identification of abiotic stress-responsive efficient antifungal Pseudomonas spp. from rice rhizospheric soil
Autorzy:
Karnwal, A.
Powiązania:
https://bibliotekanauki.pl/articles/2096368.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
abiotic stress
ACC deaminase
antifungal
biofertilizer
Pseudomonas
rice rhizosphere
Opis:
Plant growth-promoting rhizobacteria (PGPR) are a collection of microorganisms often used to support and promote plant development and combat plant infectious diseases with various biological control methods. The most significant restricting factors for agricultural productivity worldwide are abiotic constraints. In the present study, seven bacterial isolates from the rice rhizosphere were selected for detailed tests based on results obtained in experiments determining the ACC deaminase synthesis and drought tolerance at !0.30 MPa PEG level. Screening results of the stress tolerance analysis of the seven isolates for elevated temperature (50°C), alkalinity (10% NaCl), and drought (-1.2 MPa) showed that abiotic stress resistance was less prevalent in DRO2, DRO13, and DRO43 isolates than in DRO17, DRO28, DRO35, and DRO51 isolates. During the study, it was observed that DRO17, DRO28, and DRO51 tended to maintain similar cell density at -0.73 MPa PEG level, as observed at -0.30 MPa stress condition. No bacterial growth was observed at higher PEG level (-1.12 MPa) for any bacterial isolate. Four strains of Pseudomonas (DRO17, DRO28, DRO35, and DRO51) exhibited salinity and temperature tolerance. Antifungal screening using the bangle method showed that DRO35 was highly antagonistic towards Rhizoctonia solani 4633, followed by Fusarium moniliforme 4223, with an inhibition of 64.3% and 48%, respectively. The DRO28 isolate exhibited 72.5% growth inhibition for Fusarium moniliforme 4223, while the DRO51 isolate showed 38.2% growth inhibition for Bipolaris hawaiiensis 2445. DRO17 reduced the growth of Rhizoctonia solani 4633, and Curvularia lunata 350 by 36% and 31%, respectively. In conclusion, the screening of bacterial strains with promising stress tolerance and antifungal characteristics could support farmers to achieve the required positive outcomes in the agriculture field.
Źródło:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2021, 102, 1; 5-19
0860-7796
Pojawia się w:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Fungal diversity of root vegetables and soil rhizosphere collected from organic and conventional farms in Eastern Poland
Autorzy:
Kłapeć, T.
Cholewa, G.
Cholewa, A.
Dutkiewicz, J.
Wójcik-Fatla, A.
Powiązania:
https://bibliotekanauki.pl/articles/2081696.pdf
Data publikacji:
2018
Wydawca:
Instytut Medycyny Wsi
Tematy:
filamentous fungi
vegetables
rhizosphere soil
organic and conventional farms
Opis:
Objective. Determination of the concentration and species composition of filamentous fungi in root vegetables (carrots and red beetroots), and the adjacent rhizosphere soil, collected on organic and conventional farms in Eastern Poland. Materials and method. During the period 2015–2016, a total number of 80 samples of vegetables and 40 samples of soil were examined. From each type of farm, 20 samples of vegetables and 20 samples of the adjacent soil were examined. In addition, the study included 20 samples of vegetables from organic farms and 20 samples of vegetables from conventional farms purchased on the markets in the city of Lublin in Eastern Poland. In order to determine the concentration and species composition of filamentous fungi, both in vegetables and soil, the method of plate dilutions on Malt Agar medium (Difco) with chloramphenicol was used. The study was conducted in two parallel repetitions. Inoculated media were incubated at the temperature of 30° C for 72 hours, then at room temperature for 72 hours. The species composition of fungal flora was determined using macroscopic and microscopic methods, with the help of keys and atlases. Results. It was found that the mean concentration of fungi was higher in vegetables and soil from conventional farms than in those from organic farms. In the case of carrots and soil from conventional farms, this concentration was 4.93 and 5.10 log10 CFU g-1, respectively, whereas from organic farms – respectively, 3.81 and 4.20 log10 CFU g-1. In the case of beetroots and soil from conventional farms, the mean concentrations were also higher compared to organic farms – 5.09 vs. 3.93 and 4.95 vs. 4.23 log10 CFU g-1. In the examined vegetables and rhizosphere soil, 61 species of filamentous fungi were found, of which 12 belonged to the genus Penicillium, 4 to the genus Fusarium, and 2 species each to the genera: Aspergillus, Cladosporium and Trichoderma. As many as 28 (45.9%) fungal species that occurred in vegetables and soil are regarded as pathogenic for humans.
Źródło:
Annals of Agricultural and Environmental Medicine; 2018, 25, 2; 374-381
1232-1966
Pojawia się w:
Annals of Agricultural and Environmental Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Effect of Organic Substrates Application on the Amylolytic Activity of Urban Soils
Autorzy:
Wydro, U.
Wołejko, E.
Jabłońska-Trypuć, A.
Butarewicz, A.
Łoboda, T.
Powiązania:
https://bibliotekanauki.pl/articles/125043.pdf
Data publikacji:
2018
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
sewage sludge
rhizosphere
urban soil
amylases activity
amylolytic bacteria
Opis:
The aim of this work was to investigate the influence of fresh and thermally treated sewage sludge on the amylolytical activity of the urban soils. Two experimental areas on the lawns along the main roads of Bialystok were prepared in 2011 and 2015. The factors taken into account in the experiment involved: the type of sewage sludge (mechanically dewatered – SS and thermally dried “Granbial” – G), three doses of sewage sludge (0 – control; 14.5 and 29 t DM/ha) and two grass mixtures (Eko and Roadside). The number of amylolytic bacteria in grass mixtures and rhizosphere and amylase activity in soil were monitored twice during 2011 and 2012 vegetation season (in July and October). The main properties of soil (soil pH, granulometric composition, total organic carbon – TOC, available phosphorus and total nitrogen content) after the application of organic substrates were also analysed. Addition of the dewatered sewage sludge to soil resulted in an increase in the number of amylolytic bacteria (from 7.4 to 18.8 ∙106 cfu/g DM) in July, while in the soil treatment with thermally dried sludge, the increased number of the bacteria (from 11.03 to 44.68 ∙106 cfu/g DM) was observed in October. The amylases activity in the soil treated with SS exhibited the highest average value in July (2.11 mg Glc/g DM ∙24 h), while in the soil treated with “Granbial”, it was stable in studied period (from 1.65 to 2.18 mg Glc/g DM ∙24 h).
Źródło:
Journal of Ecological Engineering; 2018, 19, 4; 251-259
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Stimulation of Plant Growth through Interactions of Bacteria and Protozoa: Testing the Auxiliary Microbial Loop Hypothesis
Autorzy:
Bonkowski, Michael
Clarholm, Marianne
Powiązania:
https://bibliotekanauki.pl/articles/763461.pdf
Data publikacji:
2012
Wydawca:
Uniwersytet Jagielloński. Wydawnictwo Uniwersytetu Jagiellońskiego
Tematy:
Protozoa, bacteria, microbial loop, plant growth, priming effect, rhizosphere ecology
Opis:
By feeding on bacterial biomass protozoa play an acknowledged role in the liberation of nutrients in the plant rhizosphere. In addition there are suggestions that plants have mechanisms working through changes in root architecture and initiation of active release from soil organic matter, which are used to improve uptake and recirculation of nutrients in the ecosystem. All processes are carried out on a local scale in soil with roots, bacteria and protozoa interacting. The many actors and the small scale of interactions make experimentation difficult. We discuss mistakes, pit falls and misinterpretations and provide suggestions for improvement. Recent methodological progress has opened new exciting avenues for protozoan research. New techniques have already helped to reveal protozoan regulation of cooperation as well as conflict in bacterial communities. These mechanisms in turn affect bacterial functioning and target molecular control points in rhizosphere food webs in relation to plants. Integrating nutritional and regulatory aspects into new concepts of protozoan functioning in soil is a challenging frontier in protozoology.
Źródło:
Acta Protozoologica; 2012, 51, 3
1689-0027
Pojawia się w:
Acta Protozoologica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Testate Amoebae Communities in the Rhizosphere of Rhododendron ponticum (Ericaceae) in an Evergreen Broadleaf Forest in Southern Spain
Autorzy:
Vohník, Martin
Burdíková, Zuzana
Wilkinson, David M.
Powiązania:
https://bibliotekanauki.pl/articles/763451.pdf
Data publikacji:
2012
Wydawca:
Uniwersytet Jagielloński. Wydawnictwo Uniwersytetu Jagiellońskiego
Tematy:
Testaceans, Trigonopyxis , invasive species, rhizosphere ecology, root associated fungi, ericoid mycorrhiza
Opis:
Testate amoebae (TA) are an important part of soil microbial communities and in certain ecosystems they may represent a substantial proportion of total microbial biomass. Their distribution and abundance is driven by various abiotic factors (e.g. pH, organic matter, soil moisture, soil/water chemistry) but comparatively less is known about the role of biotic interactions. TA often co-occur with Ericaceae, a ubiquitous plant family inhabiting acidic soils with poor nutrient status. Ericaceae can significantly change soil properties through production of recalcitrant litter and possibly also due to root exudates and activities of root-inhabiting fungi; this may result in profound modifications of microbial communities. A recent study from northwest England shows that the invasive ericaceous shrub Rhododendron ponticum may significantly modify communities of soil TA. Here, we investigate the effect of pH, organic matter, soil moisture and R. ponticum presence on TA communities within the native range of the ericaceous shrub at two sites in south Spain and compare our results with the previous study from NW England. At the Spanish sites, organic matter content, R. ponticum presence and pH affected occurrence and abundance of several TA species; R. ponticum presence and organic matter content were highly correlated and explained most of the observed variability in TA communities (= the effect of the R. ponticum rhizosphere). R. ponticum rhizosphere affected especially TA with relatively large tests, i.e. Cyclopyxis eurystoma, Phryganella acropodia and Trigonopyxis arcula. Interestingly, T. arcula was also positively associated with R. ponticum in the previously studied British sites. The rhizosphere of the ericaceous shrub appears to have a positive effect on testate amoebae taxon richness at the two studied autochthonous Spanish sites but may reduce taxon richness in the sites in Britain where R. ponticum is an introduced species. Such possible positive/negative effects of native/invasive species, as well as other plant guilds, on TA communities clearly deserve further investigation.
Źródło:
Acta Protozoologica; 2012, 51, 3
1689-0027
Pojawia się w:
Acta Protozoologica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Field evaluation of insect pests and pathogens associated with Sesame cultivated in the Niger Delta of Nigeria
Autorzy:
Zakka, U.
Tanimola, A. A.
Okereke, V. C.
Ogheneruona, O.
Powiązania:
https://bibliotekanauki.pl/articles/1112548.pdf
Data publikacji:
2018
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Fungal isolates
Insect species
Jos
Maiduguri
PDA
Plant-parasitic-nematodes
Rhizosphere
Opis:
Field evaluation of insect pests and pathogens associated with sesame cultivated in the Niger Delta region of Nigeria was conducted to provide baseline information on their status. The experiment was laid out in Randomized Complete Block Design. Herein, sesame seeds were obtained from the Jos and Maiduguri main markets. These were sown, then data were collected on insect species beginning three weeks after sowing (WAS) for six weeks and identified to species levels. At 10 WAS, plant parasitic nematodes (PPNs) were extracted from both root and soil samples in the rhizosphere of sesame, using the modified Baermann method. Plant parasitic nematodes were identified to generic level. Infected plant parts from field were thoroughly washed, disinfected and plated on PDA, and subsequently incubated at 25 ± 2 °C. Fungal pathogens were isolated, identified and checked for their viability and purity. Data obtained were subjected to both parametric and none parametric analyses. Insect species collected included Leptaulaca fissicolis, Gryllus bimaculatus, Apogonia nitidula, Trilophida conturbata, Elis sp. amongst others. A total of six genera of PPNs, Helicotylenchus, Pratylenchus, Scutellonema, Gracilacus, Meloidogyne and Tylenchus were associated with Sesame. Gracilacus and Pratylenchus had the highest population in soil (37.5%) and roots (37.5%). Three fungal isolates, namely, Fusarium oxysporum, Fusarium solani and Trichoderma sp, were consistently isolated from the plant parts - with Fusarium oxysporum and Fusarium solani being pathogenic. Knowledge of these insect pests and pathogens will aid in their management.
Źródło:
World News of Natural Sciences; 2018, 18, 2; 146-162
2543-5426
Pojawia się w:
World News of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Impact of AMF Claroideoglomus etunicatum on the structure of fungal communities in the tomato rhizosphere
Autorzy:
Jamiołkowska, A.
Thanoon, A.H.
Patkowska, A.
Grządziel, J.
Powiązania:
https://bibliotekanauki.pl/articles/2196356.pdf
Data publikacji:
2019-06-26
Wydawca:
Polskie Towarzystwo Botaniczne
Tematy:
fungal community composition
tomato
rhizosphere
Lycopersicon esculentum
mycorrhiza
soil-borne pathogen
Opis:
Mycorrhizal fungi influence the development and activity of communities of soil microorganisms. The purpose of this study was to estimate the effect of arbuscular mycorrhizal fungus Claroideoglomus etunicatum (W. N. Becker & Gerd.) C. Walker & Schüβler on the population structure of fungal colonies in the rhizosphere of tomatoes grown in a plastic tunnel. The field experiment was conducted from 2015 to 2017 at an ecological farm in Grądy, central eastern Poland. The object of study were the three tomato cultivars: ‘Antalya F 1 ’, ‘Esmira F 1 ’, and ‘Pelikan F 1 ’. Tomato seedlings were inoculated with C. etunicatum; spores were introduced about 5 cm deep in the rhizosphere of the studied plants (25–30 spores of C. etunicatum for each plant). Each year, mycological analysis of the tomato rhizosphere was conducted using Warcup’s method; structure of fungal communities of the tomato rhizosphere varied depending on the AMF applied. Saprotrophic fungi such as Trichoderma ssp., Mucor spp., and Penicillium spp. were often more isolated from the rhizosphere of plants inoculated with C. etunicatum than that of the control samples. It can be concluded that AMF directly impacted the development of fungal biodiversity in the tomato rhizosphere, particularly regarding the number of saprotrophs in the soil.
Źródło:
Acta Mycologica; 2019, 54, 1; 1120
0001-625X
2353-074X
Pojawia się w:
Acta Mycologica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The effect of biopreparations on root growth and microbiology activity in the rhizosphere of apple trees
Wpływ biopreparatów na wzrost systemu korzeniowego oraz efektywność mikrobiologii ryzosfery jabłoni
Autorzy:
Derkowska, E.
Sas Paszt, L.
Harbuzov, A.
Trzciński, P.
Bogumił, A.
Powiązania:
https://bibliotekanauki.pl/articles/11542869.pdf
Data publikacji:
2014
Wydawca:
Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie
Tematy:
biopreparation
plant growth
root growth
microbiological activity
rhizosphere
tree
apple tree
Opis:
The aim of the study was to determine the effect of various biopreparations on the growth of the apple root system, the number of spores of AMF, the total number of bacteria and microscopic fungi in the rhizosphere soil, and the degree of mycorrhizal association in the roots of two apple tree cultivars. The experiment was established in the spring of 2009 in the Experimental Orchard of the Institute of Horticulture in Dąbrowice. The research objects were one-year-old maidens of the apple cultivars ‘Topaz’ and ‘Ariva’ grafted on M26 rootstock. The trees were treated with the following biopreparations: control, control NPK (standard NPK fertilization), manure, Micosat F + manure, Humus UP, Humus Active + Aktywit PM, BioFeed Amin + manure, BioFeed Quality + manure, Tytanit + manure, Vinassa + manure, Florovit Eko, and Florovit Pro Natura. Treatment of ‘Topaz’ and ‘Ariva’ apple trees with the biopreparations Micosat F, Humus UP, Humus Active + Aktywit PM, BioFeed Amin, Vinassa, Florovit Eko and Florovit Pro Natura produced positive effects on the growth of apple roots and their mycorrhizal frequency, and the size of the populations of microorganisms in the rhizosphere soil.
Celem badań było określenie wpływu różnych biopreparatów na wzrost systemu korzeniowego, liczbę zarodników grzybów mikoryzowych, ogólną liczbę bakterii i grzybów mikroskopowych w glebie rizosferowej oraz stopień asocjacji mikoryzowej w korzeniach dwóch odmian jabłoni. Doświadczenie założono wiosną 2009 r. w Sadzie Doświadczalnym Instytutu Ogrodnictwa w Dąbrowicach. Obiektem badań były jednoroczne okulanty jabłoni odmian Topaz i Ariva szczepione na podkładce M26. Rośliny traktowano następującymi biopreparatami: kontrola, kontrola NPK, obornik, Micosat F + obornik, Humus UP, Humus Active + Aktywit PM, BioFeed Amin + obornik, BioFeed Quality + obornik, Tytanit + obornik, Vinassa + obornik, Florovit Eco oraz preparat Florovit Pro Nature. Traktowanie drzew jabłoni ‘Topaz’ i ‘Ariva’ biopreparatami Micosat F, Humus UP, Humus Active + Aktywit PM, BioFeed Amin, Vinassa, Florovit Eco oraz Florovit Pro Nature wpłynęło korzystnie na wzrost korzeni, stopień frekwencji mikoryzowej i wielkość populacji mikroorganizmów w glebie rizosferowej.
Źródło:
Acta Scientiarum Polonorum. Hortorum Cultus; 2014, 13, 6; 127-137
1644-0692
Pojawia się w:
Acta Scientiarum Polonorum. Hortorum Cultus
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Zadrzewienia i odnowienia z użyciem preparatów mikoryzowo-bakteryjnych
Reforestration and restoration using mycorrhizal-bacteria preparation
Autorzy:
Ząbkiewicz, A.
Myga-Nowak, M.
Bandurska, K.
Krupa, P.
Powiązania:
https://bibliotekanauki.pl/articles/410299.pdf
Data publikacji:
2013
Wydawca:
Uniwersytet Humanistyczno-Przyrodniczy im. Jana Długosza w Częstochowie. Wydawnictwo Uczelniane
Tematy:
mikoryza
grzyby mikoryzowe
bakterie MHB
ryzosfera
mycorrhiza
mycorrhizal fungi
MHB bacteria
rhizosphere
Opis:
Dla roślin wprowadzanych na tereny trudno odnawialne – zalesienia porolne, stanowiska poprzemysłowe czy gleby zdegradowane, znaczącą rolę odgrywają grzyby mikoryzowe i bakterie wspomagające. Pomocne dla stanowisk pozbawionych naturalnych komponentów biotycznych są, stosowane coraz częściej, sztuczne szczepionki mikoryzowo-bakteryjne. Ich efektywność zależy w dużej mierze od gatunków, a raczej szczepu grzyba i bakterii aktywnych w procesie symbiotycznym. Znaczenie ma także pochodzenie mikroorganizmów używanych do mikoryzacji. Oporność grzybów nawet tego samego gatunku na wysokie stężenia metali ciężkich jest większa, gdy izolowane są z terenów skażonych, a efektywność w dostarczaniu wody i soli mineralnych roślinom wzrasta, gdy symbionty pochodzą ze stanowisk suchych. Efektywne zalesienie czy zadrzewienie trudnoodnawialnych stanowisk bez pomocy symbiontów jest niemożliwe.
Mycorrhizal fungi and mycorrhization helper bacteria play an important role for plants in the post - agricultural areas and in the degraded land which are under the influence of industrial emissions. The artificial mycorrhizal-bacteria inoculum can be helpful for areas without natural biotic components. Their effectiveness depends largely on the species, but rather a strain of fungus and bacteria, which are active in the process of symbiosis. The origin of the microorganism used in mycorrhization is also significant. Fungal resistance, even of the same species, at high concentrations of heavy metals is higher when they are isolated from contaminated areas, and the efficiency in the delivery of water and mineral salts for the plant is increased when symbionts come from dry position. Effective land rehabilitation and reforestation in the post - agricultural areas are impossible without the help of fungal and bacteria symbionts.
Źródło:
Chemistry, Environment, Biotechnology; 2013, 16; 79-83
2083-7097
Pojawia się w:
Chemistry, Environment, Biotechnology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Fusaria and other fungi taxa associated with rhizosphere and rhizoplane of lentil and sesame at different growth stages
Autorzy:
Abdel-Hafez, S.I.I.
Ismail, M.A.
Hussein, N.A.
Abdel-Hameed, N.A.
Powiązania:
https://bibliotekanauki.pl/articles/67219.pdf
Data publikacji:
2012
Wydawca:
Polskie Towarzystwo Botaniczne
Tematy:
Fusarium
fungi
rhizosphere
rhizoplane
lentil
sesame
growth stage
Lens culinaris
Sesamum indicum
Opis:
Density and diversity of Fusarium species and other fungi associated with rhizosphere and rhizoplane of lentil and sesame plants at three different growth stages were investigated. Sixteen species of Fusarium were isolated from rhizosphere (13 species) and rhizoplane (11) of both plants studied. In lentil, 11 species were recorded from its rhizosphere (9 species) and rhizoplane (8). Fusarium species associated with lentil rhizoplane gave highest number of propagules at the first stage of plant growth while the ones of Fusarium associated with the rhizosphere produced the highest number at the second stage of growth. F. solani was the most common in the three growth stages. In addition, of two growth stages, F. culmorum and F. tricinctum were isolated from the rhizosphere while F. nygamai and F. verticillioides from the rhizoplane. The other species were recorded from only one growth stage of lentil plant. In sesame plants, rhizosphere yielded nine Fusarium species while rhizoplane gave only six from the three stages investigated. Stage I of sesame rhizosphere possessed the highest colony forming units of Fusarium. As the case for lentil, F. solani was the most common species in sesame rhizospere and rhizoplane. F. verticillioides and F. nygamai (in three different growth stages) followed by F. oxysporum and F. tricinctum (in two growth stages) were recorded using the dilution-plate and/or soil-plate methods from sesame rhizosphere soils. Rhizoplane Fusarium species of sesame plants were isolated at the three different growth stages with almost equal number of colony forming units. F. poae came after F. solani in its frequency since it was recovered from two growth stages. Several of the isolated species are well-known as pathogens to many cultivated plants. To the best of our knowledge, three species are recorded here for the first time in Egypt from the rhizosphere (F. acutatum), rhizoplane of sesame plants (F. longipes) and from rhizosphere of both lentil and sesame and rhizoplane of lentil (F. nygamai).
Źródło:
Acta Mycologica; 2012, 47, 1
0001-625X
2353-074X
Pojawia się w:
Acta Mycologica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Phytoremediation of nitroglycerin in smokeless powders
Autorzy:
Asbaghi, N.
Pichtel, J.
Powiązania:
https://bibliotekanauki.pl/articles/363252.pdf
Data publikacji:
2012
Wydawca:
Uniwersytet Warmińsko-Mazurski w Olsztynie
Tematy:
bioremediacja
kompostowany osad czynny
owies
ryzosfera
turzyca
bioremediation
biosolids
oats
rhizosphere
sedge
Opis:
The reported study evaluated the feasibility of rhizosphereenhanced phytoremediation in the removal of nitroglycerin (NG), as applied in commercial smokeless powder (SP), from soil. Double base smokeless powder was applied to soil mesocosms at rates of 0, 1, 5 and 10% (w/w). The mesocosms were seeded with oats (Avena sativa) or planted with live sedge plants (Carex vulpinoidea). Composted biosolids (20% w/w) were used as a soil treatment. Mesocosms were sampled at 7, 14, 30, and 60 days after initial planting. Determination of residual soil NG was performed using gas chromatography with an electron capture detector. Both plant species were capable of modest NG uptake (146.0 and 87.5mg·kg-1 for sedge and oat, respectively at the 10% SP rate). Only modest quantities of NG removal were accounted for by abiotic processes such as soil sorption. Soil bacterial numbers remained relatively constant regardless of rate of SP application. Microbial activity in the plant rhizosphere was concluded to be the major contributor to NG solubilization and decomposition. Addition of composted biosolids to soil imparted a positive effect in NG decomposition and/or removal from soil. Additional study is needed to determine long-term decomposition of smokeless powder and subsequent NG reactions in soil.
Źródło:
Environmental Biotechnology; 2012, 8, 2; 45-54
1734-4964
Pojawia się w:
Environmental Biotechnology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Communities of fungi and bacteria in the rhizosphere of potato and their effect on phytopathogens
Autorzy:
Pieta, D
Patkowska, E.
Pastucha, A.
Powiązania:
https://bibliotekanauki.pl/articles/65532.pdf
Data publikacji:
2001
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
biological activity
rhizosphere
microorganism
antagonistic microorganism
pathogenic fungi
phytopathogen
bacteria
fungi
potato
Opis:
The purpose of the studies carried out in the years 1996-1998 was to establish the composition of bacteria and fungi communities in the potato rhizosphere and non-rhizosphere soil. Besides, in the examined samples the studies established the proportion of bacteria and fungi antagonistic towards soilborne pathogens. The microbiological analysis of 1 g of dry weight of soil coming from the rhizosphere of potato revealed from 3.96 x 10⁶ to 7.26 x 10⁶ bacteria colonies and from 51.38 x 10³ to 69.96 x 10³ fungi colonies. In the case of nonrhizosphere soil of 1 g of dry weight of soil revealed from 3.50 x 10⁶ to 4.75 x 10⁶ bacteria colonies and from 16.16 x 10³ to 34.10 x 10³ fungi colonies. Moreover, potato cultivation had a positive effect on the increase of numbers of antagonistic bacteria (Bacillus spp. and Pseudomonas spp.) and fungi (Gliocladium spp., Penicillium spp., Trichoderma spp.). A larger number of the communities of bacteria and fungi, including antagonistic ones, in the root area of potato, indicates considerable biological activity, which contributes to a better phytosanitary condition of the soil.
W latach 1996-1998 przedmiotem badań była gleba ryzosferowa ziemniaka oraz pozaryzosferowa. Na podstawie analizy mikrobiologicznej uzyskane wyniki wykazały, że w 1 g s. m. gleby ryzosferowej ziemniaka średnia liczebność bakterii oraz średnia liczebność grzybów była większa, aniżeli w glebie pozaryzosferowej. Podobna zależność wystąpiła w przypadku bakterii z rodzaju Pseudomonas. W przypadku bakterii z rodzaju Bacillus o 6% więcej kolonii uzyskano z gleby pozaryzosferowej w porównaniu z glebą ryzosferową ziemniaka. Na podstawie badań laboratoryjnych stwierdzono, że w obrębie zbiorowisk populacji bakterii i grzybów w glebie ryzosferowej opisanej rośliny było znacznie więcej antagonistycznych Bacillus spp., Pseudomonas spp., Gliocladium spp., Penicillium spp. i Trichoderma spp., aniżeli w glebie pozaryzosferowej. Liczebność populacji bakterii i grzybów w strefie przykorzeniowej ziemniaka była większa w porównaniu z glebą pozaryzosferową, co może świadczyć o zwiększonej aktywności biologicznej gleby ryzosferowej.
Źródło:
Journal of Plant Protection Research; 2001, 41, 2
1427-4345
Pojawia się w:
Journal of Plant Protection Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Microorganisms number in sorghum (Sorghum bicolor (L.) Moench) rhizosphere after herbicide, plant growth regulator, and a biopreparation use
Liczba mikroorganizmów w ryzosferze sorga (Sorghum bicolor (L.) Moench) po zastosowaniu herbicydu, regulatora wzrostu roślin i biopreparatu
Autorzy:
Karpenko, V.
Krasnoshtan, V.
Mostoviak, I.
Prytuliak, R.
Powiązania:
https://bibliotekanauki.pl/articles/13925511.pdf
Data publikacji:
2021
Wydawca:
Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie
Tematy:
microbiological activity
rhizosphere
sorghum
Sorghum bicolor
grain
herbicide
plant growth regulator
biopreparation
Źródło:
Agronomy Science; 2021, 76, 2; 17-26
2544-4476
2544-798X
Pojawia się w:
Agronomy Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Formation of bacterial and fungal communities in the rhizosphere of soybean [Glycine max. [L.] Merrill] and their antagonism towards phytopathogens
Autorzy:
Patkowska, E
Powiązania:
https://bibliotekanauki.pl/articles/65615.pdf
Data publikacji:
2001
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
plant disease
rhizosphere
soybean
fungi community
bacteria
phytopathogen
Glycine max
fungi
bacterial community
Opis:
The purpose of the studies conducted in the years 1996-1998 was to determine the quantitative and qualitative composition of bacterial and fungal communities in rhizosphere of soybean cultivated in monoculture and non-rhizosphere soil. Besides, the proportion of bacteria and fungi, which were distinguished by their antagonistic effect towards soil-borne pathogens was established. A microbiological analysis of 1g of dry weight of soil from rhizosphere of soybean resulted in 3.21 x 10⁶ to 8.70 x 10⁶ bacterial colonies and from 70.51 x 10³ to 123.74 x 10³ fungal colonies. In the case of non-rhizosphere soil, 3.50 x 10⁶ to 4.75 x 10⁶ bacterial colonies and 16.16 x 10³ to 51.38 x 10³ fungal colonies were obtained. Besides, soybean cultivation in monoculture had a negative effect on the number of antagonistic isolates of bacteria (Bacillus spp., Pseudomonas spp.) and fungi (Gliocladium spp., Penicillium spp., Trichoderma spp.). Smaller numbers of antagonistic bacteria and fungi in rhizosphere soil of soybean cultivated in monoculture as compared to non-rhizosphere soil, can prove little biological activity, which results in a worse phytosanitaty condition of the soil.
Przedmiotem badań przeprowadzonych w latach 1996-1998 była gleba ryzosferowa soi uprawianej w monokulturze oraz gleba pozaryzosferowa. Analiza mikrobiologiczna wykazała, że w 1 g s.m. gleby ryzosferowej średnia liczebność bakterii oraz grzybów była większa, aniżeli w glebie pozaryzosferowej. W próbach badanych gleb liczebność bakterii z rodzaju Bacillus była zbliżona. W przypadku bakterii z rodzaju Pseudomonas ogólna ich liczebność była prawie trzykrotnie większa w ryzosferze soi, aniżeli w glebie pozaryzosferowej. Badania laboratoryjne wykazały, że znacznie więcej antagonistycznych Bacillus spp., Pseudomonas spp., Gliocladium spp., Penicillium spp. i Trichoderma spp. wystąpiło w glebie pozaryzosferowej, aniżeli w ryzosferze soi. Mniejsza liczebność antagonistycznych bakterii i grzybów w ryzosferze soi uprawianej w monokulturze może świadczyć o małej aktywności biologicznej mikroorganizmów, co przyczynia się do pogorszenia fitosanitarnego stanu gleby.
Źródło:
Journal of Plant Protection Research; 2001, 41, 2
1427-4345
Pojawia się w:
Journal of Plant Protection Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The effect of dressing zaprawa Oxafun T on the quantitative and qualitative composition of rhizosphere microorganism of runner bean and soybean
Autorzy:
Pastucha, A.
Powiązania:
https://bibliotekanauki.pl/articles/11347123.pdf
Data publikacji:
2003
Wydawca:
Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie
Tematy:
fungicide
qualitative composition
rhizosphere microorganism
soybean
Oxafun T fungicide
quantitative composition
runner bean
Opis:
The studies were conducted in the years 2000–2002 at the Experimental Station of Czesławice near Nałęczów on a field of monocultures of runner bean and soybean. The subject of the studies was the rhizosphere soil of these plant species. The experiment of each plant included 2 combinations, i.e. with dressing the seeds with Zaprawa Oxafun T and without dressing the seeds (control). Results of the microbiological analysis of the rhizosphere soil of runner bean and soybean showed that the plants grown of the seeds dressed with Zaprawa Oxafun T always gave a greater number of bacteria colonies, Bacillus spp. and Pseudomonas spp. but a smaller number of fungi colonies than in the control combination. In comparison to the rhizosphere soil of soybean, the rhizosphere soil of runner bean contained much more bacteria and a much lower number of fungi colonies. Among the obtained saprotrophic macroorganisms, a more numerous group of antagonistic bacteria and fungi was achieved from the rhizosphere soil of runner bean than from the rhizosphere soil of soybean. Whatever the plant species, considerably more antagonistic bacteria and fungi occurred in the combination with Zaprawa Oxafun T as compared to the control. The plant species as well as the introduction of Zaprawa Oxafun T into the soil together with the seeds had a considerable influence on the quantitative and qualitative composition of the populations of soil microorganisms.
Badania prowadzono w latach 2000–2002 w Gospodarstwie Doświadczalnym w Czesławicach k. Nałęczowa na polu monokultury fasoli wielokwiatowej oraz soi. Przedmiotem badań była gleba ryzosferowa wymienionych gatunków roślin. Doświadczenie dla każdej rośliny obejmowało po 2 kombinacje, tj. z zaprawianiem nasion Zaprawą Oxafun T oraz bez zaprawiania nasion (kontrolę). Wyniki analizy mikrobiologicznej gleby ryzosferowej fasoli wielokwiatowej i soi wykazały, że z roślin wyrosłych z nasion zaprawianych Zaprawą Oxafun T uzyskiwano zawsze większą ogólną liczbę kolonii bakterii, Bacillus spp. i Pseudomonas spp., a mniejszą liczbę kolonii grzybów, aniżeli w kombinacji kontrolnej. W glebie ryzosferowej fasoli występowało znacznie więcej bakterii, a mniej kolonii grzybów w porównaniu do gleby ryzosferowej soi. Spośród uzyskanych mikroorganizmów saprotroficznych liczniejszą grupę antagonistycznych bakterii i grzybów uzyskano z gleby ryzosferowej fasoli wielokwiatowej aniżeli soi. Bez względu na gatunek rośliny znacznie więcej antagonistycznych bakterii i grzybów wystąpiło w kombinacji z Zaprawą Oxafun T w porównaniu do kontroli. Gatunek rośliny, a także wprowadzenie do gleby Zaprawy Oxafun T wraz z nasionami miało istotny wpływ na skład ilościowy i jakościowy populacji mikroorganizmów glebowych.
Źródło:
Acta Scientiarum Polonorum. Hortorum Cultus; 2003, 02, 1; 55-64
1644-0692
Pojawia się w:
Acta Scientiarum Polonorum. Hortorum Cultus
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Production, characterization and iron binding affinity of hydroxamate siderophores from rhizosphere associated fluorescent Pseudomonas
Autorzy:
Deori, M.
Jayamohan, N.S.
Kumudini, B.S.
Powiązania:
https://bibliotekanauki.pl/articles/65031.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
iron-binding compound
hydroxamate siderophore
siderophore
physical parameter
rhizosphere
Pseudomonas
succinate medium
mutation
Opis:
Fluorescent Pseudomonas (FP) is a major group of plant growth promoting rhizobacteria and a well-known synthesizer of siderophores, which imparts a selective advantage on rhizosphere competence and their biocontrol traits. The present study was aimed at examining the factors affecting the production of siderophores and their potential biocontrol traits. Sixteen FP isolates were shortlisted based on their siderophore-producing ability in chrome azural S medium. The isolates were checked for variations in siderophore production under varying incubation times, temperatures, pH, iron (Fe3+) concentrations and mutagens. In addition, the iron binding affinity of siderophores, mycelial inhibition assay and plant growth promotion traits were assessed. Results showed that the siderophore production was highly influenced by the time of incubation, changes in pH, temperature and iron concentration. Chemical characterization showed that the produced siderophores were hydroxamates. Maximum siderophore production was observed at pH 7 whereas UV and EtBr exposure invariably suppressed siderophore production drastically in all isolates. All FPs from maize rhizosphere showed excellent siderophore production which could be due to the competence in strategy-II of the plant rhizosphere and significant growth inhibition on Fusarium oxysporum. Our results suggest the inclination of siderophores to iron, in terms of various criteria affecting production and the possible role of environmental mutations that affect the natural iron harvesting mechanism.
Źródło:
Journal of Plant Protection Research; 2018, 58, 1
1427-4345
Pojawia się w:
Journal of Plant Protection Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The effect of chitosan on the formation of microorganism communities in the rhizosphere soil of soybean
Wpływ chitozanu na kształtowanie się zbiorowisk mikroorganizmów w glebie ryzosferowej soi
Autorzy:
Pastucha, A.
Powiązania:
https://bibliotekanauki.pl/articles/11364524.pdf
Data publikacji:
2005
Wydawca:
Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie
Tematy:
antagonistic bacteria
antagonistic fungi
bacteria
fungi
chitosan
soybean
rhizosphere soil
formation
microorganism community
Opis:
The experiment was conducted in the years 1999–2001. The object of the studies was the rhizosphere soil of soybean ‘Polan’ cv., and 0.1% chitosan. This compound was used once (seed dressing), twice (seed dressing and seedling spraying), three times (seed dressing, seedling spraying and plant spraying at anthesis). The experiment also considered a control combination, i.e. without chitosan. The purpose of the studies was to determine the effect of chitosan on the qualitative and quantitative composition of microorganisms in rhizosphere soil with antagonists distinguished. The microbiological analysis of samples of soybean rhizosphere soil taken from particular experimental combinations pointed to different numbers of bacteria and fungi. The greatest total number of bacteria colonies and the smallest number of fungi colonies were characteristic of the rhizosphere soil of soybean after using chitosan three times. This sample of soil contained the greatest number of bacteria and fungi with antagonistic effect towards plant pathogens.
Doświadczenie prowadzono w latach 1999–2001. Przedmiotem badań była gleba ryzosferowa soi odmiany ‘Polan’ oraz 0,1% chitozan. Związek ten użyto jednorazowo (zaprawianie nasion), dwukrotnie (zaprawianie nasion i oprysk siewek), trzykrotnie (zaprawianie nasion, oprysk siewek i oprysk roślin w fazie kwitnienia). W doświadczeniu uwzględniono również kombinacje kontrolną, tj. bez użycia chitozanu. Celem badań było określenie wpływu chitozanu na skład jakościowy i ilościowy populacji mikroorganizmów w glebie ryzosferowej z wyszczególnieniem antagonistów. Przeprowadzona analiza mikrobiologiczna prób gleby ryzosferowej soi pobranej z poszczególnych kombinacji doświadczenia wskazała na różną liczebność bakterii oraz grzybów. Największą ogólną liczbę kolonii bakterii, a najmniejszą liczbę kolonii grzybów charakteryzowała się gleba ryzosferowa soi po trzykrotnym zastosowaniu chitozanu. W tej próbie gleby wystąpiło najwięcej bakterii i grzybów o antagonistycznym oddziaływaniu względem fitopatogenów.
Źródło:
Acta Scientiarum Polonorum. Hortorum Cultus; 2005, 04, 2; 69-77
1644-0692
Pojawia się w:
Acta Scientiarum Polonorum. Hortorum Cultus
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Forms of heavy metals (Zn, Pb, Cd) occuring in rhizospheres from the areas of former and contemporary Zn-Pb ore mining
Autorzy:
Rożek, D.
Nadłonek, W.
Cabała, J.
Powiązania:
https://bibliotekanauki.pl/articles/88903.pdf
Data publikacji:
2015
Wydawca:
Politechnika Wrocławska. Wydział Geoinżynierii, Górnictwa i Geologii. Instytut Górnictwa
Tematy:
heavy metals
rhizosphere
Zn-Pb secondary minerals
Olkusz Zn-Pb mining region
historical mining
Opis:
The research areas were selected in the regions heavily polluted by wastes from the former washing plant, flotation waste dump and by non-sulphide Zn-Pb ores from open pit mining in the Olkusz region. The submicroscopic phases occurring in the surface of plant roots and in the rhizospheres were investigated by XRD and SEM/EDS methods. Morphology of submicroscopic metalliferous phases and their manner of occurrence were the subject of study. The analysis of EDS spectra enabled to identify phases and mineral aggregates including Zn, Pb, Fe, Mn, Cd in their structure. The soils from the washing plant and areas of open pit exploitation are contaminated by diverse complexes of minerals. The occurrence of unstable Fe, Pb, Ca sulphates indicate that these wastes are still intensively geochemically active.
Źródło:
Mining Science; 2015, 22, Special Issue 2; 125-138
2300-9586
2353-5423
Pojawia się w:
Mining Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Production of indole acetic acid by Kocuria rosea VB1 and Arthrobacter luteolus VB2 under the influence of L-tryptophan and maize root exudates
Autorzy:
Karnwal, A.
Powiązania:
https://bibliotekanauki.pl/articles/81267.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
indoloacetic acid
phytohormone
plant growth hormone
L-tryptophan
maize root
16S rDNA sequence
rhizosphere
Źródło:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2019, 100, 1
0860-7796
Pojawia się w:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-25 z 47

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