CO — Daucus carota subsp. sativus

Summary

DCAR_009909 (DcCO) on carrot chromosome 3 encodes a CONSTANS-like protein with B-box and CCT domains, and is annotated with diverse molecular functions including OGTase, peptide-O-fucosyltransferase, and histone methylase activities. The gene is associated with regulation of phytochrome signaling pathway, response to short and long days, upregulation of short-day photoperiodism and flowering, and photoentrainment of circadian clock. It is linked to traits including photoperiod sensitivity, vegetative vigor, leaf margin morphology, seed protein content, iron content, water stress response, nitrogen sensitivity, and subterranean shoot axis tuber size. The gene is also associated with flower formation, upregulation of chlorophyll breakdown, and regulation of ascorbate biosynthesis. Studies of related genes in other species connect the family to photoperiod-dependent flowering time, tuberization, stress tolerance, and root architecture.