Wyniki wyszukiwania

1

Siderophores production, microbial activity and physiological state of bacteria in soil contaminated by Cu

100%

Kozdroj J.

Polish Journal of Environmental Studies

|

1996

|

tom 05

|

nr 5

The effects of Cu on the production of hydroxamate siderophores, microbial activity and physiological state of bacteria in a sandy-loam soil were studied. Soil samples were treated with either 0.5 or 2.5 mg Cu (as chloride) g-1 or were left untreated. Soil microflora responded to added Cu by changing the physiological state and production of specific metabolites, i.e. siderophores; however, microbial activity did not show any significant change.

2

Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik

Production, characterization and iron binding affinity of hydroxamate siderophores from rhizosphere associated fluorescent Pseudomonas

84%

Deori M., Jayamohan N. S., Kumudini B. S.

Journal of Plant Protection Research

|

2018

|

tom 58

|

nr 1

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.

3

Treatment of rye [Secale cereale L.] seedlings with growth promoting Pseudomonas strains: plant growth responses and survival of bacteria in the rhizosphere

67%

Kurek E., Jaroszuk J.

Acta Microbiologica Polonica

|

1994

|

tom 43

|

nr 2

Ograniczanie wyników

1 Acta Microbiologica Polonica

1 Journal of Plant Protection Research

1 Polish Journal of Environmental Studies

1 Deori M.

1 Jaroszuk J.

1 Jayamohan N. S.

1 Kozdroj J.

1 Kumudini B. S.

1 Kurek E.

1 2018

1 1996

1 1994

Siderophores production, microbial activity and physiological state of bacteria in soil contaminated by Cu

Production, characterization and iron binding affinity of hydroxamate siderophores from rhizosphere associated fluorescent Pseudomonas

Treatment of rye [Secale cereale L.] seedlings with growth promoting Pseudomonas strains: plant growth responses and survival of bacteria in the rhizosphere