NHX1 — Glycine max

Summary

GmNHX1 (GLYMA_20G229900V4) encodes a sodium/hydrogen exchanger family protein with potassium:proton antiporter activity, sodium transporter activity, and protein binding capacity, localized to the vacuolar membrane, vacuole, plastid, mitochondria, cytosol, and plasmalemma. In soybean, this gene is associated with sodium and potassium ion membrane transport, vacuolar membrane transport, cell pH regulation, stomatal opening, abscission, endocytosis, and auxin anabolism. It has been linked to drought tolerance, salinity tolerance (SALTTL), phosphorus uptake, photosynthetic rate, chlorophyll content, and plant height. Associations also include cell expansion, root growth, flower development, stomatal conductance and closure, transpiration, hypocotyl elongation, apical dominance, vacuolar pH, and nitrogen assimilation. Studies of related genes in other species connect the family to salt tolerance, potassium homeostasis, vacuolar pH regulation, heat and cold tolerance, seed germination, and biomass production.