NHX1 — Brassica juncea

Summary

BJUB01G01160S (symbol NHX1, preferred name BjNHX4) on Brassica juncea chromosome B01 encodes a sodium/hydrogen exchanger of the NaH_exchanger and CPA1 families, with potassium:proton antiporter and sodium transporter activities. The gene is associated with vacuolar membrane transport, sodium import, cell pH regulation, potassium ion membrane transport, photoprotection, detoxification, calcium signaling, chlorophyll fluorescence, stress response, homeostasis, and activation of the salinity response. It localizes to the vacuolar membrane and plant-type vacuole. Associations include chlorophyll content, salt tolerance, auxin homeostasis, root growth, gravitropism, potassium ion homeostasis, microtubule organization, plant growth, and apical dominance. Related genes in other species are linked to ion homeostasis, increased sensitivity to oryzalin, and shortened roots.