KC1 — Capsicum annuum

Summary

CaKC1 (T459_09908) on pepper chromosome 3 encodes a protein with potassium channel activity, outward rectifier potassium channel activity, and ion transporter activity, containing domains characteristic of voltage-gated potassium channels (KAT/AKT, K_chnl_volt-dep_EAG/ELK/ERG) and cyclic nucleotide-binding domains. The gene is associated with regulation of membrane potential, monoatomic ion homeostasis, regulation of K+ transport, and upregulation of stomatal opening. It is linked to numerous agronomically relevant traits including yield, water use efficiency, photosynthetic rate, transpiration rate, leaf necrosis tolerance, root hair length, lateral root length, days to flowering, vegetative growth time, and responses to water stress, alkali soil, and various nutrients. Localization evidence links the product to the apical plasma membrane, pollen tube tip, vesicle, and cell plate. Studies of related genes in other species connect the family to stomatal regulation, sodium and cadmium tolerance, and seed germination.