NHX1 — Solanum lycopersicum

Summary

SOLYC01G098190.3, also known as NHX1, encodes a sodium/hydrogen exchanger belonging to the NaH_exchanger and cation/H_exchanger_CPA1 families, with lithium:proton antiporter, potassium:proton antiporter, and sodium transporter activities. This tomato gene on chromosome 1 is associated with ion homeostasis, ionic balance, and vacuolar membrane transport. It has been linked to cadmium tolerance, alkaline stress tolerance, and bacterial wilt resistance. The gene is connected to numerous traits including fruit weight, lycopene content, yield, water use efficiency, net photosynthetic rate, and sodium uptake. It is also associated with stomatal conductance, drought tolerance, cell expansion, and auxin homeostasis. Related genes in other species link the family to vacuolar pH regulation, sodium and potassium accumulation, and heat and salt stress tolerance.