Induction of Systemic Resistance by Bacillus subtilis Isolates against Fusarium Wilt of Chilli
Year: 2018
Type: article
Abstract: Soil has enormous potential antagonistic mechanism, which have positive influence on plant growth and health. Among the microbes, Bacillus subtilis an endospore forming, gram positive bacteria, plays a major role in biocontrol and PGPR activities. Among the different mechanisms of biocontrol, Induced systemic resistance is the one which induces the resistance by activating the defence related enzymes and increasing the growth parameters. The potential isolates of B. subtilis were studied for induction of systemic resistance. Among them isolate, BS16 recorded highest germination (94.25 %), vigour index (1030), shoot length (8.50 cm) and root length (4.8 cm) compared to control. The treatment BS16+FS recorded highest defence enzymes, peroxidise (1.04 change in absorbance at 470 nm/min/mg protein), polyphenol oxidise (0.79 change in absorbance at 420 nm/min/mg protein) and Phenylalanine ammonia lyase (nmol trans-cinamic acid/hr/mg protein) activity on the 7th day after challenge inoculation, thereafter the activity declined by 9th day compared to control. B. subtilis is one of the potential isolate which induces the systemic resistance in chilli against the Fusarium wilt.
Authors: K. Rajkumar, M.K. Naik, Y.S. Amaresh, G. Chennappa
Institution: University of Agricultural Sciences Raichur
Language: English
Subfield: Plant Science
Domain: Life Sciences
SDG: Zero hunger
Open Access status: diamond
OpenAlex ID: W2885220683