NHX1 — Medicago truncatula

Summary

MTR_7G114250 (MtNHX1) in barrel medic encodes a sodium/hydrogen exchanger belonging to the CPA1 family, with potassium:proton antiporter activity. It is associated with vacuolar membrane localisation and linked to sodium and potassium ion transport, cell pH regulation, and response to salt stress. The gene has been connected to regulation of stomatal closure, photosynthetic rate, chlorophyll content, and salinity tolerance. Associations also include cell expansion, root growth, flower development, auxin homeostasis, and vacuolar pH regulation. Related genes in other species are linked to salt tolerance, potassium accumulation, seed germination, biomass production, and heat and cold tolerance.