HKT1 — Oryza sativa Japonica

Summary

OsHKT1 (Os04g0607600) encodes a transmembrane cation transporter with sodium and potassium transporter activity, belonging to the TrkH/K-transport family. It is associated with sodium and potassium ion membrane transport, regulation of sodium transporter activity, and C4 photosynthesis, PH reduction, cytokinin anabolism, abscisic acid anabolism, potassium ion homeostasis, response to desiccation, photorespiration, hypersensitivity, chlorophyll fluorescence, cytokinin signaling, response to salt, and sumoylation. The gene has been linked to salt response, drought tolerance, water use efficiency, oxidative stress response, potassium concentration, sodium uptake, plant vigor, panicle length, leaf angle, growth stage, germination rate, photosynthetic rate, grain number, grain size, grain weight, plant height, grain yield, and chlorophyll content. It localizes to the plasmalemma, Golgi membrane, ER membrane, and mitochondria. Studies of related genes in other species link the family to salt tolerance, sodium homeostasis, and ion distribution.