Endophytic bacteria <i>Priestia megaterium</i> 170T-4 improves soybean salt tolerance through regulation of ion homeostasis and phytohormone signaling pathways.

ABSTRACT: Salt stress in coastal saline-alkali soils impairs plant survival and growth. Plant growth-promoting rhizosphere bacteria (PGPR) and endophytic bacteria can enhance salinity tolerance via stable host associations. This study used culture-based and transcriptomic methods to investigate culturable endophytic bacteria in soybean and their salt-tolerance mechanisms. A total of 154 strains were isolated from the roots of 10 soybean varieties cultivated in coastal saline-alkali soil, spanning 4 phyla, 35 genera, and 76 species. Microbacterium phyllosphaerae and Priestia megaterium were identified as dominant species, from which two representative strains were selected to assess their growth-promoting effects under salt stress. Strain 170T-4 was identified as P. megaterium vi

SUBMITTER: Hua S 

PROVIDER: S-EPMC12507761 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature