NHX3 — Triticum aestivum

Summary

TRAESCS7D02G226200, designated TaNHX3 on bread wheat chromosome 7D, encodes a sodium:hydrogen exchanger with potassium:proton antiporter activity and sodium transporter activity, belonging to the NaH_exchanger and CPA1 cation/H_exchanger families. The protein localises to the vacuolar membrane and plasmalemma. TaNHX3 is associated with vacuolar membrane transport, sodium import, potassium ion homeostasis and transport, cell pH regulation, proline metabolism, activation of salinity response, and stress response. It has been connected to numerous agronomic traits including salinity tolerance, grain yield, grain weight, grain protein content, grain size, seed color, seed dormancy, sprouting tolerance, stripe rust, plant height, spike length, panicle length, days to flowering, anthesis time, chlorophyll content, net photosynthetic rate, quantum yield, transpiration rate, osmotic adjustment capacity, and proline content. Related genes in other species are linked to salt tolerance and soluble sugar accumulation.