NHX1 — Glycine max

Summary

GLYMA_03G243000V4 (GmNHX1) on soybean chromosome 3 encodes a sodium:hydrogen exchanger with potassium:proton antiporter activity, belonging to the NaH_exchanger and CPA1 cation/H_exchanger families. The protein localises to the vacuolar membrane, vacuole, plastid, mitochondria, cytosol and plasmalemma. GmNHX1 is associated with sodium and potassium ion membrane transport, vacuolar membrane transport, cell pH regulation, stomatal opening, abscission, endocytosis, auxin anabolism and secretion. The gene has been linked to drought tolerance, salinity tolerance, photosynthetic rate, chlorophyll content, plant height, phosphorus uptake, root growth, cell expansion, flower development, stem internode length, fiber yield, nitrogen assimilation and gravitropism. Related genes in other species are associated with salt tolerance, potassium accumulation, heat and cold tolerance, seed germination, biomass production and disease resistance.