Preinoculation with Bradyrhizobium japonicum enhances the salt tolerance of Glycine max seedlings by regulating polyamine metabolism in roots.

Rhizobia are common symbiotic microorganisms in the root system of leguminous plants that can usually provide nitrogen to the host through nitrogen fixation. Studies have shown that rhizobium-preinoculated soybean plants usually exhibit improved salt tolerance, but the underlying mechanism is not fully understood. In this paper, transcriptome sequencing (RNA-seq) revealed that preinoculation with rhizobia affected polyamine (PA) metabolism in soybean roots.

Functional Characterisation of the Transcription Factor Gene from in Overexpressed Soybean Composite Plants and under Salt Stress.

WRKY proteins are a superfamily of transcription factors (TFs) that play multiple roles in plants' growth, development, and environmental stress response. In this study, a novel WRKY gene called that is specifically upregulated in salt-tolerant accession BB52 seedlings was identified by transcriptomic analysis under salt stress. How the physiological functions and mechanisms of the gene affect salt tolerance was investigated using transformations of soybean hairy roots and , including wild-type (WT) and -mutant plants.