NHX1 — Cucumis sativus

Summary

CsNHX1 (CSA_3G760520) encodes a cation/H⁺ exchanger of the CPA1 family, with lithium:proton antiporter, potassium:proton antiporter, sodium:hydrogen exchanger and sodium transporter activities. It is associated with vacuolar membrane transport, sodium import, lithium export, potassium ion homeostasis, cell pH regulation, and response to superoxide. The gene has been connected to numerous agronomically relevant traits including yield, plant height, root length and volume, chlorophyll content, photosynthetic rate, stomatal resistance, and high temperature stress response, drought tolerance, and disease tolerance. It is also linked to sodium exclusion, sodium uptake, auxin content, abscisic acid sensitivity, and plant stress response traits. Localisation evidence places the product at the tonoplast, vacuolar membrane, endosome, and plastid.