Overexpression of the Wild Soybean Expansin Gene <i>GsEXPB1</i> Enhances Salt Stress Tolerance in Transgenic Soybeans.

ABSTRACT: As the ancestor and close relative of soybeans, wild soybeans exhibit strong salt tolerance and are ideal materials for discovering salt-tolerant genes. Expansins are a type of cell wall-loosening protein that plays an active role in regulating plant salt tolerance. We previously obtained the wild soybean expansin gene GsEXPB1, which is specifically transcribed in roots and actively responds to salt stress. Overexpression of this gene significantly promotes the growth of soybean hairy roots under salt stress. To further elucidate the function of the gene in regulating plant tolerance to salt stress, this study obtained soybean hairy roots that overexpress the GsEXPB1 gene and silence its homologous gene GmEXPB4 through RNAi. Under salt stress, the overexpression of the

SUBMITTER: Wang L 

PROVIDER: S-EPMC12473410 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature