NHX1 — Oryza sativa Indica Group

Summary

BGIOSGA027380 (NHX1) on chromosome 8 of Indica rice encodes a sodium:hydrogen exchanger with potassium:proton antiporter and sodium transporter activities, belonging to the NaH_exchanger and cation/H_exchanger_CPA1 families. The gene is associated with salt stress tolerance, drought resistance, and yield, as well as seedling, grain, shoot, root, lateral root, pollen, vascular bundle, and stomatal phenotypes. It is linked to vacuolar membrane transport, sodium import, potassium ion membrane transport, regulation of stomatal closure, cell pH regulation, leaf development, and salinity response. The product localizes to the vacuolar membrane, vacuole, plastid, mitochondria, cytosol, and plasmalemma. Related genes in other species link the family to potassium accumulation, vacuolar pH homeostasis, ion homeostasis, heat tolerance, and seed germination rate.