KC1 — Solanum tuberosum

Summary

StKC1 (PGSC0003DMG400013243) on potato chromosome 11 encodes a protein with outward rectifier potassium channel activity, potassium transporter activity, and additional annotated functions including ATPase inhibitor activity, calcium-dependent protein serine/threonine phosphatase activity, and GAP binding. The protein contains KHA, KAT/AKT, ion transport, cNMP-binding, and ankyrin repeat domains. StKC1 is associated with regulation of membrane potential, monoatomic ion homeostasis, potassium transport regulation, stomatal opening, and responses to basic pH, hypotonic salinity, and wound healing. The gene has been linked to numerous agronomically relevant traits including yield, water use efficiency, transpiration rate, photosynthetic rate, leaf necrosis tolerance, root hair and lateral root length, days to flowering, vegetative growth time, and responses to water stress, aluminum, cadmium, and powdery mildew. It is also associated with potassium translocation, stomatal regulation, and programmed cell death.