NHX8 — Brassica oleracea

Summary

BoNHX8 (NHX8) on cabbage chromosome 9 encodes a cation/H⁺ exchanger of the CPA1 family, annotated with lithium:proton and potassium:proton antiporter activity, sodium:hydrogen exchanger activity, NAD ADP-ribosyltransferase activity, protein kinase activity, and protein binding. It is associated with lithium export and transport, sodium import, vacuolar membrane transport, cell pH regulation, response to superoxide, hydrogen peroxide, and ozone, nitric oxide anabolism, glucosinolate anabolism, lateral root morphogenesis, ethene-mediated signalling, and regulation of ROS metabolism. Localised to the vacuolar membrane, tonoplast, plasmalemma, chloroplast envelope, cytoplasm, and nucleus, it is linked to yield, photosynthetic rate, chlorophyll content, plant height, root development, drought tolerance, disease tolerance, salt tolerance, sodium uptake and efflux, potassium acquisition, and stress response traits. Related genes in other species connect the family to salinity tolerance, sodium homeostasis, and heat tolerance.