NHX1 — triticum aestivum

Summary

TRAESCS7B02G149100 (symbol NHX1, preferred name NHX5) on bread wheat chromosome 7B encodes a cation/H+ exchanger transmembrane domain-containing protein with sodium:hydrogen exchanger and potassium:proton antiporter activity. The gene is associated with salt tolerance in wheat, as well as with salinity tolerance, drought tolerance, grain weight, grain yield, plant height, leaf chlorophyll content, photosynthetic rate, and stomatal resistance. It is associated with vacuolar membrane transport, cell pH regulation, potassium ion membrane transport, C4 photosynthesis, hydrogen sulfide and melatonin anabolism, and responses to karrikin and nitrate. The product localises to the vacuolar membrane, endosome, and plasmalemma. Studies of related genes in other species link the family to salt response, water use efficiency, quantum yield, and sugar content.