KC1 — Oryza sativa Japonica

Summary

Rice gene OS02G0245800 (KC1, also known as KAT3) encodes a protein with domains including KHA_dom, KAT/AKT, and ion transport domains, and is annotated with outward rectifier potassium channel activity, ion transporter activity, and ATPase inhibitor activity. The gene is associated with potassium homeostasis and transport, including potassium translocation, distribution, and secretion into xylem. It is linked to stress responses such as drought, salt, and osmotic stress tolerance, as well as reactive oxygen species production and response. Associations with agronomic traits include grain shape, yield, panicle length, spikelet sterility, and leaf necrosis tolerance. The encoded protein localizes to the plasma membrane, nuclear membrane, and cell plate, and is associated with regulation of stomatal opening, membrane potential, and ion homeostasis. Studies of related genes in other species link the family to guard cell ion flux, sodium and cadmium tolerance, and root gravitropism.