NHX8 — Triticum turgidum subsp. durum

Summary

TRITD7AV1G214190 (TtNHX8, also known as SOS1) on durum wheat chromosome 7A encodes a cyclic nucleotide-binding domain-containing protein with cation/H+ exchanger transmembrane domains, annotated with lithium:proton antiporter, sodium:hydrogen exchanger, and potassium:proton antiporter activities. The gene is associated with salt stress tolerance, lithium export, sodium import, cell pH regulation, and vacuolar membrane transport. It has been linked to yield traits, grain yield, plant height, photosynthetic rate, stomatal resistance, drought tolerance, disease tolerance, root development traits, and responses to oxidative stress, ozone, hydrogen peroxide, and high temperature. Associations also include sodium uptake, jasmonic acid sensitivity, and programmed cell death. Related genes in other species link the family to sodium exclusion, ion homeostasis, and high-salinity stress tolerance.