KC1 — Capsicum annuum

Summary

CaKC1 (T459_16851) on pepper chromosome 6 encodes a protein with domains characteristic of the KAT/AKT family, including a cyclic nucleotide-binding domain and ankyrin repeats. The gene product exhibits outward rectifier potassium channel activity, ion transporter activity, and additional molecular functions such as ATPase inhibitor and protein phosphatase activities. CaKC1 is associated with the regulation of membrane potential, potassium ion homeostasis and transport, stomatal opening, and responses to basic pH and hypotonic salinity. It is linked to numerous agronomically relevant traits, including yield, water use efficiency, photosynthetic rate, transpiration rate, leaf necrosis tolerance, root hair and lateral root length, days to flowering, and responses to water stress, alkali soil, and various nutrient sensitivities. The gene is also associated with potassium translocation, stomatal opening, and reactive oxygen species responses.