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Benchmarking of different microbes for their biosurfactants antifungal action against plant pathogens

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Title Benchmarking of different microbes for their biosurfactants antifungal action against plant pathogens
 
Creator Meena, Khem Raj
Satyam
Singh, Ashutosh
Jaiswal, Aman
Rai, Dinesh
 
Subject Antifungal activity
Bacillus velezensis
Biosurfactants
Biotic stress
Emulsification activity
Foam forming activity
Oil spreading test
 
Description 931-938
The biotic stress caused by phytopathogens (bacteria, fungus, yeast and insect pests) is a primary factor in yield loss of
plants. Biocontrol agents and their active compounds are used to manage such plant pathogens. Here, in our study, we
screened four bacterial isolates identified as Bacillus cereus, B. anthracis, B. velezensis and Serratia marcescens after
morphological, biochemical and molecular characterization (16s rDNA sequencing) for production of biosurfactant by foam
forming activity, oil spreading tests and emulsification activity. Highest foam stability (75 min) and maximum
emulsification activity E24% (75%) was observed by B. velezensis strain. Among all the four isolates, Bacillus velezensis
strain produced maximum biosurfactant (0.349±0.004 g/50 mL). Biosurfactant of all the four bacterial isolates were checked
for fungal inhibiton on PDA plate(s). Bacillus velezensis showed comparatively the highest percent inhibition 58.82, 88.15,
78.45,72.68, 83.96, 75.47, 68.07 and 88.44% against Colletotrichum falcatum, Fusarium oxysporum f sp. ciceri,
Helminthosporium maydis, F. oxysporum f. sp. lycopersici, Aspergillus niger, Mucor sp., Helminthosporium oryzae and
Rhizoctonia solani, respectively. Bacillus velezensis biosurfactant among all the four bacterial isolates was found to be most
effective against the tested phytopathogens.
 
Date 2022-12-02T06:10:17Z
2022-12-02T06:10:17Z
2022-12
 
Type Article
 
Identifier 0975-1009 (Online); 0019-5189 (Print)
http://nopr.niscpr.res.in/handle/123456789/60988
https://doi.org/10.56042/ijeb.v60i12.58955
 
Language en
en
 
Publisher NIScPR-CSIR,India
 
Source IJEB Vol.60(12) [Dec 2022]