The role of Na+/H+ antiporter in response of plant to abiotic stress

Abstract

Na+/H+ antiporter (NHX) is an important ion transporter in response to abiotic stress in plants. NHX regulates ion homeostasis and intracellular pH and vesicle transport in plants by mediating Na+/H+ and/or K+/H+ exchange to maintain the relative stability of K+/Na+ in the cytoplasm. In this paper, the research progress on the discovery, molecular structure, classification, biological function of NHX, and its roles in the response of plant to abiotic stress were summarized, and a preliminary prospect of its future research direction was prospected. This work could provide some theoretical basis and genetic resources for the genetic improvement of crop stress resistance.