Gγ subunit AT1/GS3-the "code" of alkaline tolerance in main graminaceous crops.

This brief article highlights the results of Zhang et al. (Science 379, eade8416, 2023), who recently found that the Gγ subunit AT1/GS3 contributes to alkaline tolerance in several main monocots crops, and revealed the molecular mechanism of AT1/GS3-mediated response to alkaline stress in plants, which involves regulating H 2 O 2 levels by inhibiting the phosphorylation of aquaporin PIP2s.