On the potential of Bacillus aryabhattai KMT-4 against Meloidogyne javanica

Abstract Background Nematodes ( Meloidogyne spp.) are a major reason behind the global crop yield reduction. The bacterial strain KMT-4 was isolated from nematode-affected tomato Solanum lycopersicum ) rhizosphere at research farms, Hisar, India, and screened for its biocontrol potential against root-knot nematode javanica as well checked effect on plant growth yield. Results bacterium identified Bacillus aryabhattai based phenotypic characters 16S rRNA sequence analysis. During in vitro studies, hatching mortality of M. were significantly affected due to antagonistic behavior exhibited by bacterium. In addition this, also displayed various direct indirect growth-promoting attributes like siderophore production, hormone (IAA) ammonia excretion, hydrogen cyanide chitinase activity. A pot house experiment conducted brinjal resulted nearly 73% reduction eggs, while 80% galls root compared untreated chemically treated plants. final population reduced treatment. It 1141.6 J2/200cc soil control 108 J2/200 cc inoculated with KMT-4. Similar results obtained field experiments cucumber years 2018 2019, respectively. Also, notable enhancement observed both trials. Conclusion possession nematicidal activity along properties B . warrants employment potent biological agent promising substitute chemical nematicides.