KC1 — Daucus carota subsp. sativus

Summary

DcKC1 (DCAR_007690) on carrot chromosome 2 encodes a protein with outward rectifier potassium channel activity, belonging to the KAT/AKT family and containing domains including KHA, ion transport, cNMP-binding, ankyrin repeats, and a BAH domain. It is associated with regulation of membrane potential, potassium ion homeostasis and transport, stomatal opening, hypotonic salinity response, and actin dynamics. The gene is 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, alkali soil, aluminum, cadmium, and insect damage. It has also been connected to potassium translocation, xylem secretion, stomatal opening, and reactive oxygen species response. Studies of related genes in other species link the family to stomatal regulation, seed germination, gravitropism, and heavy metal tolerance.