Abscisic acid regulates Cl^- efflux via the ABI5-ZAT10-SLAH3 module in chloride-stressed Malus hupehensis.

ABSTRACT: The overload of Cl^- typically causes cell damage and death in plants, especially in Cl^--sensitive crops. Abscisic acid (ABA) is a stress-induced phytohormone that can alleviate chloride stress by reducing Cl^- accumulation; however, the mechanism is not clear. Here, we found that the application of ABA elevated Cl^- efflux from roots and reduced membrane damage and cell death in chloride-stressed Malus hupehensis. MhSLAH3, a homolog of the slow anion channel from M. hupehensis, encoded a channel controlling Cl^- efflux and was induced by both chloride and ABA. MhSLAH3 overexpression accelerated Cl^- efflux, which enhanced the tolerance of M. hupehensis to chloride stress, and retarded chloride-

SUBMITTER: Song J 

PROVIDER: S-EPMC11387005 | biostudies-literature | 2024 Sep

REPOSITORIES: biostudies-literature