NHX1 — triticum aestivum

Summary

TRAESCS7D02G241200 (NHX1) on bread wheat chromosome 7D encodes a sodium:hydrogen exchanger with potassium:proton antiporter activity, belonging to the NaH_exchanger and cation/H_exchanger_CPA1 families. The product localises to the vacuolar membrane, endosome and plasmalemma. NHX1 is associated with vacuolar membrane transport, sodium import, potassium ion membrane transport, cell pH regulation, hydrogen sulfide anabolism, melatonin anabolism, and C4 photosynthesis. The gene has been linked to grain yield, grain weight, ear number, spike length, plant height, stem elongation, leaf chlorophyll content, photosynthetic rate, stomatal resistance, seed germination, and tolerance to salinity, drought, and heat. Studies of related genes in other species connect the family to salt tolerance.