KT1 — Arabidopsis thaliana

Summary

AT2G26650 (KT1, also known as AKT1) encodes a protein in Arabidopsis thaliana belonging to the KAT/AKT family and containing ankyrin repeats, a cyclic nucleotide-binding domain, and an ion transport domain. The product exhibits outward rectifier potassium channel activity, potassium transporter activity, and is associated with ion channel complexes. KT1 is linked to potassium homeostasis and transport, membrane polarization, regulation of membrane potential, and responses to potassium ions, cesium, and basic pH. It is associated with traits including potassium concentration and content, leaf necrosis tolerance, alkali soil sensitivity, root and shoot fresh weight, yield, leaf chlorophyll content, water stress response, and cadmium concentration. The gene is also associated with stomatal opening and closure, cell growth, root gravitropism, and programmed cell death. Related genes in other species link the family to sodium tolerance, stomatal regulation, and resistance to Phytophthora infestans.