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Streptomyces spp., a potential biocontrol agent of charcoal rot of sorghum caused by Macrophomina phaseolina

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Relation http://oar.icrisat.org/10023/
 
Title Streptomyces spp., a potential biocontrol agent of charcoal rot of sorghum caused by Macrophomina phaseolina
 
Creator Alekhya, G
Sharma, R
Gopalakrishnan, S
 
Subject Sorghum
 
Description Seven strains of Streptomyces spp. (BCA-546, BCA-659, BCA-667, BCA-689, BCA-698, CAI-8 and CAI-133;
demonstrated previously to have potential for plant growth-promotion on sorghum and chickpea) were evaluated
for their antagonistic potential against Macrophomina phaseolina, causal agent of charcoal rot disease of sorghum,
by dual culture assay, secondary metabolite production assay and in greenhouse disease screen. All the seven
strains inhibited M. phaseolina in both dual culture as well as secondary metabolite production assays but four
of them (BCA-546, BCA-667, BCA-698 and CAI-8) were notable. When these selected four strains were tested for
their antifungal activity in greenhouse on sorghum by tooth pick method, BCA-546 and CAI-8 significantly reduced
the disease. The stem samples of the control and Streptomyces sp. treated plants were analysed under scanning
electron microscope, where the xylem and phloem tissues of the Streptomyces spp. treated plants were found
intact compared to that of infected control plants. This study indicates that the selected two Streptomyces strains,
BCA-546 and CAI-8, have the potential to control charcoal rot disease in sorghum.
 
Publisher Plant Protection Association of India
 
Date 2016
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
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Identifier http://oar.icrisat.org/10023/1/Streptomyces%20spp.%2C%20a%20potential%20biocontrol%20agent%20of%20charcoal%20.pdf
Alekhya, G and Sharma, R and Gopalakrishnan, S (2016) Streptomyces spp., a potential biocontrol agent of charcoal rot of sorghum caused by Macrophomina phaseolina. Indian Journal of Plant Protection, 44 (2). pp. 222-228. ISSN 0253-4355