KC1 — Oryza sativa Japonica

Summary

OsKC1 (OS01G0648000) encodes a protein belonging to the KAT/AKT family, possessing domains including ankyrin repeats, a cyclic nucleotide-binding domain, and an ion transport domain. The gene product exhibits outward rectifier potassium channel activity, ion transporter activity, and is associated with monoatomic ion homeostasis, regulation of membrane potential, and upregulation of stomatal opening. In rice, OsKC1 is linked to potassium homeostasis, salt and drought stress tolerance, reactive oxygen species responses, and grain shape and yield. It has been connected to leaf necrosis tolerance, osmotic adjustment capacity, and spikelet sterility. Studies of related genes in other species link the family to guard cell ion flux, sodium and cadmium tolerance, and root gravitropism. The protein localizes to the plasma membrane, nuclear membrane, and cell plate.