Ethylene increases the NaHCO₃ stress tolerance of grapevines partially via the VvERF1B-VvMYC2-VvPMA10 pathway.

ABSTRACT: Here, we evaluated the role of ethylene in regulating the NaHCO₃ stress tolerance of grapevines and clarified the mechanism by which VvERF1B regulates the response to NaHCO₃ stress. The exogenous application of ACC and VvACS3 overexpression in grapevines and grape calli revealed that ethylene increased NaHCO₃ stress tolerance, and this was accompanied by increased plasma membrane H⁺-ATPase (PMA) activity. The expression of VvERF1B was strongly induced by ACC, and overexpression of this gene in grapevines conferred increased NaHCO₃ stress tolerance and enhanced PMA activity and H⁺ and oxalate secretion. Additionally, the function of VvERF1B was also verified using mutant transgenic grape calli and overexpression in Arabidopsi

SUBMITTER: Xiang G 

PROVIDER: S-EPMC11933843 | biostudies-literature | 2025 Apr

REPOSITORIES: biostudies-literature