Efficacy of streptomyces spp. And bacillus spp. For their antagonistic potential against dry root rot (rhizoctonia bataticola) of chickpea

Gindi, A and Gopalakrishnan, S and Naik, M K (2018) Efficacy of streptomyces spp. And bacillus spp. For their antagonistic potential against dry root rot (rhizoctonia bataticola) of chickpea. Andhra Pradesh Journal of Agricultural Sciences, 4 (3). pp. 149-156.

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Abstract

Five strains of Streptomyces (AC-5, AC-6, AC-10, AC-18 and AC-19) and another five strains of Bacillus (BS-10, BS-15, BS-17, BS- 19 and BS-20) were earlier reported by us as biological control agents against Fusarium wilt of chickpea, caused by Fusariumoxysporum f. sp. ciceri (FOC), and plant growth-promoting agents in chickpea. In the present study, the selected strains of Streptomyces and Bacillus were further characterized for their antagonistic potential against dry root rot of chickpea, caused by Rhizoctoniabataticola, by dual culture assay, blotter paper assay and in greenhouse. Both the Streptomyces and Bacillus strains inhibited three strains of R. bataticola(RB6, RB24 and RB115) in both dual culture and blotter paper assays. When these were further evaluated for their antagonistic potential against R. bataticolaunder greenhouse conditions, reduced incidence of dry root rot was observed in Streptomyces and Bacillus treatments compared to the pathogen control.Among the ten strains studied,AC-18and BS-20recorded the highest reduction of disease both at 30 days after sowing (DAS) (58% and 75%, respectively)and 45 DAS (36% and 48%, respectively), when compared to the pathogen control.This study indicates that the selected Streptomyces and Bacillus strains have the potential for biocontrol of dry root rot of chickpea.

Item Type: Article
Divisions: Research Program : Asia
CRP: CGIAR Research Program on Grain Legumes and Dryland Cereals (GLDC)
Uncontrolled Keywords: Biocontrol, Streptomyces spp., Bacillus spp.,dry root rot, chickpea, biocontrol of soil, biocontrol
Subjects: Mandate crops > Chickpea
Others > Plant Disease
Depositing User: Mr Ramesh K
Date Deposited: 22 Jan 2019 09:46
Last Modified: 22 Jan 2019 09:46
URI: http://oar.icrisat.org/id/eprint/11044
Official URL:
Projects: UNSPECIFIED
Funders: UNSPECIFIED
Acknowledgement: This work has been undertaken as part of the CGIAR Research Program on Grain Legumes and Dryland Cereals. ICRISAT is a member of CGIAR Consortium. We would also like to thank ICRISAT and all of the staff members of the biocontrol unit, including PVS Prasad, V Srinivas, A Satya, A Jabber, A Sandip and P Mathur for their significant inputs in the experiments.
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