Elucidating the growth-promoting factors of Bacillus amyloliquefaciens on rapeseed through metabolomics

This study provides the first report linking a B. amyloliquefaciens strain to systemic reprogramming of the flavonoid metabolome in rapeseed, revealing its role as a key mechanism underlying PGPR-induced growth enhancement. This flavonoid-centric metabolic shift, potentially enhancing stress tolerance (e.g., UV protection) and facilitating beneficial plant-microbe communication, provides crucial mechanistic insights into plant-microbe interactions and highlights the potential of targeting flavonoid metabolism for developing Bam22-based biofertilizers to optimize rapeseed productivity.