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International Journal of Current Microbiology and Applied Sciences (IJCMAS)
IJCMAS is now DOI (CrossRef) registered Research Journal. The DOIs are assigned to all published IJCMAS Articles.
Index Copernicus ICI Journals Master List 2018 - IJCMAS--ICV 2018: 95.39 For more details click here
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National Academy of Agricultural Sciences (NAAS)
NAAS Score: *5.38 (2020)
[Effective from January 1, 2020]
For more details click here

ICV 2018: 95.39
Index Copernicus ICI Journals Master List 2018 - IJCMAS--ICV 2018: 95.39
For more details click here

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Original Research Articles

PRINT ISSN : 2319-7692
Online ISSN : 2319-7706
Issues : 12 per year
Publisher : Excellent Publishers
Email : editorijcmas@gmail.com / submit@ijcmas.com
Editor-in-chief: Dr.M.Prakash
Index Copernicus ICV 2018: 95.39
NAAS RATING 2020: 5.38

Int.J.Curr.Microbiol.App.Sci.2020.9(7): 3219-3235
DOI: https://doi.org/10.20546/ijcmas.2020.907.376


Invitro Bioefficacy of B. subtilis Isolates against Ralstonia solanacearum Causing Bacterial Wilt of Brinjal
Supriya1*, S. T. Yenjerappa1, S. C. Sreedevi1 and Mahadevaswamy2
1Department of Plant Pathology, University of Agricultural Sciences, Raichur, India
2Department of Agricultural microbiology, University of Agricultural Sciences, Raichur- -584100, India
*Corresponding author
Abstract:

Bacterial wilt caused by Ralstonia solanacearum, a genetically diverse soil-borne pathogen with a wide host range, is a devastating plant vascular disease (Hayward, 1991). No effective chemical product is available for Ralstonia-induced wilt. Alternative methods such as biological control agents (BCAs) have shown effectiveness. Bacillus subtilis is a non-pathogenic bacterium that lives in soil, often in association with roots of higher plants and it also produces a variety of biologically active compounds with a broad spectrum of activities towards phytopathogens and that are able to induce host systemic resistance. Thirty Bacillus subtilis isolates were isolated from rhizospheric soil of healthy brinjal plants from Hyderabad Karnataka region. These isolates were evaluated by screening their antagonistic ability to reduce incidence of bacterial wilt of brinjal caused by Ralstonia solanacearum in vitro. All the isolates showed the varied level of inhibition of Ralstonia solanacearum. Among different isolates, BS6 showed highest inhibition zone of 19.5mm diameter followed by BS-10 showed 18.16 mm and least zone of inhibition was produced by an isolate BS-11 of 5.5 mm diameter.


Keywords: B. subtilis, Ralstonia solanacearum, zone of inhibition and rhizobacteria
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How to cite this article:

Supriya, S. T. Yenjerappa, S. C. Sreedevi and Mahadevaswamy. 2020. Invitro Bioefficacy of B. subtilis Isolates against Ralstonia solanacearum Causing Bacterial Wilt of Brinjal.Int.J.Curr.Microbiol.App.Sci. 9(7): 3219-3235. doi: https://doi.org/10.20546/ijcmas.2020.907.376