NHX8 — Brassica napus

Summary

BnNHX8 (DARMORV10_A06P10710.1) on chromosome A06 of oilseed rape encodes a cation/H⁺ exchanger of the CPA1 family with lithium:proton antiporter and sodium:hydrogen exchanger activities. The gene is associated with salt, drought, oxidative and high-temperature stress responses, as well as with leaf relative water content, photosynthetic rate, stomatal resistance, yield, plant height, root development, seed germination, jasmonic acid and abscisic acid sensitivity, and disease tolerance. It is linked to lithium and sodium ion homeostasis, sodium efflux, potassium acquisition, salt stress tolerance, and circadian rhythm. The encoded protein localises to the tonoplast, plasmalemma, chloroplast envelope, cytoplasm and nucleus. Related genes in other species connect the family to lithium tolerance, high-salinity stress tolerance, sodium homeostasis, potassium uptake, heat tolerance and flavonoid accumulation.