NHX3 — Hordeum vulgare subsp. vulgare

Summary

HORVU.MOREX.R3.7HG0675240, designated HvNHX3 on barley chromosome 7H, encodes a sodium:hydrogen exchanger with potassium:proton antiporter activity and sodium transporter activity, belonging to the NaH_exchanger and Cation/H_exchanger_CPA1 families. The gene is associated with vacuolar membrane transport, sodium import, cell pH regulation, potassium ion membrane transport, potassium ion homeostasis, detoxification, response to salt, activation of salinity response, ABA signaling, and membrane transport. It is linked to the vacuolar membrane and plasmalemma. HvNHX3 is associated with salinity tolerance, relative plant height, relative growth rate, plant height, and the SALTTL trait. It is also associated with apical dominance, root growth, auxin homeostasis, microtubule organization, root growth directionality, plant growth, gravitropism, and potassium and low-potassium tolerance. Related genes in other species link the family to salt tolerance, soluble sugar accumulation, and salt response.