KC1 — Oryza sativa Japonica

Summary

OsKC1 (OS04G0445000) on rice chromosome 4 encodes a voltage-sensitive potassium channel with outward rectifier potassium channel activity, ion transporter activity, and ATPase inhibitor activity, belonging to the KAT/AKT family and containing ankyrin repeats and cyclic nucleotide-binding domains. The gene is associated with potassium homeostasis, salt and drought stress tolerance, reactive oxygen species responses, stomatal regulation, grain shape, yield, and growth in seedlings. It has been linked to oxalate secretion, regulation of membrane potential, ion homeostasis, and cell plate formation. Localisation evidence connects it to the plasma membrane, pollen tube tip, vesicle, and nuclear membrane. Studies of related genes in other species link the family to guard cell ion flux, seed germination, gravitropism, and cadmium and lead tolerance.