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

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Title Statement Benchmarking of different microbes for their biosurfactants antifungal action against plant pathogens
 
Added Entry - Uncontrolled Name Meena, Khem Raj; Dr. Rajendra Prasad Central Agricultural University, Pusa
Satyam, Satyam ; Department of Microbiology, Karnataka Agricultural University, Dharwad, Karnataka-580003, India
Singh, Ashutosh ; Center for Advanced Studies on Climate Change, Dr. Rajendra Prasad Central Agricultural University, Pusa, Bihar- 848124, India
Jaiswal, Aman ; Department of Microbiology, Dr. Rajendra Prasad Central Agricultural University, Pusa, Bihar- 848124, India
Rai, Dinesh ; Department of Plant Pathology, Dr. Rajendra Prasad Central Agricultural University, Pusa, Bihar- 848124, India
 
Uncontrolled Index Term Antifungal activity; Bacillus velezensis; Biosurfactants; Biotic stress; Emulsification activity; Foam forming activity; Oil spreading test
 
Summary, etc. 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.
 
Publication, Distribution, Etc. Indian Journal of Experimental Biology (IJEB)
2022-12-01 10:08:04
 
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http://op.niscair.res.in/index.php/IJEB/article/view/58955
 
Data Source Entry Indian Journal of Experimental Biology (IJEB); ##issue.vol## 60, ##issue.no## 12 (2022): IJEB [DECEMBER 2022]
 
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