Kinetic aspects of inhibition of the phytopathogenic fungi growth by rhizosphere bacteria

Kinetics of growth inhibition of fungi Fusarium and Bipolaris caused by bacteria Pseudomonas sp. V-6798 and Azotobacter chroococum V-2272 D on dense nutrient media, both in single-crop system and by coinoculation, was demonstrated. The speed of fungal colonies growth as a function of bacteria concen...

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Published in:Applied biochemistry and microbiology 2008-09, Vol.44 (5), p.512-517
Main Authors: Minaeva, O. M., Akimova, E. L., Evdokimov, E. V.
Format: Article
Language:English
Subjects:
Azotobacter
Bacteria
Biochemistry
Biomedical and Life Sciences
Bipolaris
Fungi
Fusarium
Growth kinetics
Kinetics
Life Sciences
Medical Microbiology
Microbiology
Plant pathology
Pseudomonas
Rhizosphere
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description Kinetics of growth inhibition of fungi Fusarium and Bipolaris caused by bacteria Pseudomonas sp. V-6798 and Azotobacter chroococum V-2272 D on dense nutrient media, both in single-crop system and by coinoculation, was demonstrated. The speed of fungal colonies growth as a function of bacteria concentration in inoculate was shown to be in accordance with the Ierysalimskii modified equation. The degree of antagonistic activity was suggested to be assessed by the constant of inhibition ( K i ) and residual rate of fungi growth. Constant of inhibition of fungal growth by bacteria varied within 10–100 cells/ml for observed species. More effective fungistatic influence of bacterial strains in combined culture was observed. Parameters reported in the present study allow comparing the degree of bacteria antifungal activity in vitro. Suggested screening method could be used for selection of bacteria as activity biofungicide and while selecting biomedication for defined plant pathogen disruption.
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source Springer Nature
subjects Azotobacter
Bacteria
Biochemistry
Biomedical and Life Sciences
Bipolaris
Fungi
Fusarium
Growth kinetics
Kinetics
Life Sciences
Medical Microbiology
Microbiology
Plant pathology
Pseudomonas
Rhizosphere
title Kinetic aspects of inhibition of the phytopathogenic fungi growth by rhizosphere bacteria
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