Antagonistic Bacteria Bacillus velezensis VB7 Possess Nematicidal Action and Induce an Immune Response to Suppress the Infection of Root-Knot Nematode (RKN) in Tomato

Meloidogyne incognita, the root-knot nematode (RKN), a devastating plant parasitic nematode, causes considerable damage to agricultural crops worldwide. As sedentary root parasite, it alters root’s physiology and influences host’s phytohormonal signaling evade defense. The sustainable management of RKN remains challenging task. Hence, we made an attempt investigate nematicide activity Bacillus velezensis VB7 trigger innate immune response against infection RKN. In vitro assay, B. inhibited hatchability eggs juvenile mortality M. incognita by 87.95% 96.66%, respectively at 96 hrs. application challenged induced MAMP-triggered immunity via expression transcription factors/defense genes several folds pertaining WRKY, LOX, PAL, MYB, PR in comparison those RKN-inoculated healthy control through RT-PCR. Additionally, Cytoscape analysis defense indicated coordinated various other linked response. Thus, current study clearly demonstrated effectiveness as potential inducer responses infestation tomato.