NHX1 — Solanum tuberosum

Summary

PGSC0003DMG400010663, designated StNHX1 on potato chromosome 1, encodes a sodium/hydrogen exchanger belonging to the NaH_exchanger and Cation/H_exchanger_CPA1 families, with annotated lithium:proton and potassium:proton antiporter activities. The gene is associated with vacuolar membrane transport, sodium import, lithium export, potassium ion homeostasis, cell pH regulation, and responses to copper and superoxide. It localises to the tonoplast, vacuole, endosome, and chloroplast envelope. StNHX1 is associated with yield, photosynthetic rate, stomatal resistance, plant height, root development, and responses to high temperature, UV-B, and abiotic stress. Associations also include sodium uptake, iron concentration, phosphorus uptake, auxin content, jasmonic acid sensitivity, and disease tolerance. Related genes in other species are linked to drought tolerance, sodium tolerance, potassium homeostasis, vacuolar pH regulation, stomatal movement, and auxin-mediated development.