NHX1 — Brassica juncea

Summary

BJUB01G00970S (BjNHX2) encodes a sodium:hydrogen exchanger belonging to the NaH_exchanger and cation/H_exchanger_CPA1 families, with potassium:proton antiporter and sodium transporter activities. It is associated with vacuolar membrane transport, sodium import, potassium ion import across the plasma membrane, cell pH regulation, photoprotection, detoxification, calcium signaling, regulation of stomatal closure, chlorophyll fluorescence, stress response, homeostasis, and activation of salinity response. The gene is linked to vacuolar membrane, mitochondria, cytosol, and plasmalemma localization. Associations include chlorophyll content, plant growth, stomatal closure, transpiration, auxin homeostasis, cell expansion, hypocotyl elongation, flower development, potassium ion homeostasis, microtubule organization, root growth directionality, apical dominance, vacuolar pH, gravitropism, and vacuolar ion homeostasis. Related genes in other species link the family to salt tolerance and vacuolar pH regulation.