The Effect of Banana Rhizosphere Chemotaxis and Chemoattractants on Bacillus velezensis LG14-3 Root Colonization and Suppression of Banana Fusarium Wilt Disease

Fusarium oxysporum f. sp. cubense (Foc) causes banana wilt disease, which is a destructive soil-borne disease. Many plants can recruit rhizosphere microorganisms using their root exudates, thereby shaping the microbiome to resist pathogen infection. Therefore, this study was conducted explore role of exudates in process biocontrol strain colonization and resistance pathogens. In study, used as chemoattractants were obtained by hydroponics. Bacillus velezensis LG14-3 isolated from infected area system showed significant chemotaxis strong inhibition cubense. Further analysis found that toward components such citric acid, succinic glycine, D-galactose D-maltose, glycine resulted more LG14-3. Moreover, enhanced swarming motility biofilm formation Pot experiments acid ability reduced disease severity index fusarium wilt. Glycine growth-promoting under stress. Our results addition chemotactic substances potential prevent