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Characterization of antagonistic streptomyces as potential biocontrol agent against fungal pathogens of chickpea and sorghum

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Title Characterization of antagonistic streptomyces as potential biocontrol agent against fungal pathogens of chickpea and sorghum
 
Creator Alekhya, G
Gopalakrishnan, S
 
Subject Chickpea
Sorghum
 
Description Twenty-seven actinomycetes isolated from vermicompost and rhizosphere soils were screened for their antagonistic potential against fungal pathogens of chickpea and sorghum. Eight isolates (BCA-657, BCA-671, BCA-679, BCA-687, BCA-690, CAI-67, CAI-70 and CAI-98) showed broad-spectrum antagonistic activity in dual-culture assay and metabolite inhibition assay. The isolates exhibited growth at pH 7−11, up to 10% saline (except BCA-687, CAI-67 and CAI-70) at 20−40 °C (BCA-679 and BCA-690 exhibited growth even at 50 °C) and produced siderophore, chitinase, cellulase, lipase, and protease with some exceptions, including hydrocyanic acid and indole acetic acid. At field application level, all the isolates tolerated the fungicide Bavistin. The sequences of 16S rDNA gene of the isolates matched with Streptomyces but with different species in the BLAST analysis. This study indicates that the selected actinomycetes have broad-spectrum biocontrol and plant growth promotion potential
 
Publisher Philippine Agricultural Scientist
 
Date 2014
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
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Identifier http://oar.icrisat.org/8314/1/PAS_97_2_191-198_2014.pdf
Alekhya, G and Gopalakrishnan, S (2014) Characterization of antagonistic streptomyces as potential biocontrol agent against fungal pathogens of chickpea and sorghum. The Philippine Agricultural Scientist, 97 (2). pp. 191-198. ISSN 0031-7454