Molecular Characterization of Pseudomonas sp and Bacillus sp for Biological Management of Sheath Blight Pathogen in Rice

 

Sathya R2, Ahila Devi P1*, Rajappan K1, Revathi N2 and Subrahmaniyan K1

1 Tamil Nadu Rice Research Institute, Aduthurai, Thanjavur District-612 101

2 Agricultural College and Research Institute, Madurai- 625 001

*Corresponding author Email: ahila.devi1@gmail.com

Volume 19-(1), 2026  ;  https://doi.org/10.58297/BPLF2050  Click here for Pdf

Received: 23rd January, 2026; Accepted: 15th March, 2026

 
Abstract

All the 20 isolates of Psuedomonas fluorescens showed positive result in all biochemical characteristics such as KOH test, HCN production, pigment production, gelatin liquefication, growth at 45 ºC and negative results were obtained in gram staining and growth at 4 ºC. Among the 20 isolates of P. fluorescens, P.f. I isolate was found to be effective by recording the mycelial growth reduction of 39.56 per cent followed by P.f. I 10 isolate 30.67 per cent reduction when compared to check (TNAU P.f.1-37.33%). The result revealed that an amplicon of 560 bp. Metabolic compounds such as HCN, Sidereophore and Volatiles were analyzed to know their mode of action.

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