<i>Bacillus velezensis</i> 20507 promotes symbiosis between <i>Bradyrhizobium japonicum</i> USDA110 and soybean by secreting flavonoids.

ABSTRACT:

Introduction

While co-inoculation with rhizobia and plant growth-promoting rhizobacteria (PGPR) can enhance soybean growth and nodulation, the interaction mechanisms between Bacillus velezensis 20507 and Bradyrhizobium japonicum USDA110 under varying nitrogen (N) supply levels (0-10 mmol/L) remain unclear. This study investigates how their synergistic interactions influence soybean nitrogen content per plant and molecular pathways.

Methods

Soybean plants were co-inoculated with B. velezensis and B. japonicum across four N levels. Nodulation, plant growth, physiology, and N content were quantified. Transcriptome sequencing of soybean roots under N deficiency compared single and co-inoculation treatments. Flavonoids in B. velezensis fermentation bro

SUBMITTER: Cheng Y 

PROVIDER: S-EPMC11983421 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature