ISSN: 0973-7510

E-ISSN: 2581-690X

SA. Ramyabharathi and T. Raguchander
1Department of Plant Pathology, Centre for Plant Protection Studies, Tamil Nadu Agricultural University, Coimbatore, India.
J Pure Appl Microbiol. 2014;8(3):2337-2344
© The Author(s). 2014
Received: 13/08/2013 | Accepted: 30/10/2013 | Published: 31/06/2014
Abstract

In this study, fifteen bacterial strains were collected from different microhabitats and characterized using biochemical and molecular techniques. The use of 16S rRNA revealed that the strains were belonged to Bacillus subtilis. Further, the strains were evaluated for their efficacy to promote plant growth in tomato seedlings. The results showed the greater plant growth promotion in seedlings treated with B. subtilis strain EPCO16. Subsequently, they were evaluated against Fusarium oxysporum f. sp. lycopersici in vitro. Bacillus subtilis strain EPCO16 has greater inhibition to F. oxysporum f. sp. lycopersici. The PCR amplification of antibiotic genes in different strains of B. subtilis was carried out. The results revealed the presence of Iturin D, Iturin C, Bacillomycin A, Bacillomycin D, Bacilysin, Fengycin and β-glucanase in β. subtilis EPCO16. The characterization of antibiotic genes revealed the biocontrol potential of B. subtilis strain EPCO16 against soil borne pathogens of vegetables.

Keywords

Bacillus subtilis, 16S rRNA, Lipopeptides, β-glucanase

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