NHX8 (TRAESCS3A02G023200) — triticum aestivum

Summary

TRAESCS3A02G023200 (TaNHX8, also known as TaSOS1) on wheat chromosome 3A encodes a cation/proton exchanger of the CPA1 family with sodium:hydrogen exchanger, lithium:proton antiporter, and potassium:proton antiporter activities. The gene is associated with salt stress tolerance in wheat, as well as sodium uptake, transport, efflux, and homeostasis. It has been linked to yield traits, plant height, leaf chlorophyll content, photosynthetic rate, stomatal resistance, drought tolerance, high temperature stress response, disease tolerance, root development traits, and root thickness. TaNHX8 is associated with vacuolar membrane and tonoplast localization, and with processes including cell pH regulation, potassium ion transport, lithium export, and responses to oxidative stress and ozone. Studies of related genes in other species link the family to sodium exclusion, ion homeostasis, and high-salinity stress tolerance.