CO — Solanum tuberosum

Summary

PGSC0003DMG400029365, the potato CO gene on chromosome 12, encodes a CONSTANS-like protein containing B-box and CCT domains. The product is associated with diverse molecular functions including OGTase activity, peptide-O-fucosyltransferase activity, histone methylase activities, and red/far-red light photoreceptor activity. This gene is linked to regulation of the phytochrome signaling pathway, photoperiodic flowering control, chlorophyll breakdown, and zeatin biosynthesis. It has been connected to numerous agronomic traits including tuber size, photoperiod sensitivity, vegetative vigor, leaf angle, iron content, nitrogen sensitivity, and responses to water stress, nematodes, and spot blotch. Studies of related genes in other species link the gene group to photoperiod-dependent flowering time, tuberization, heat stress tolerance, disease resistance, and root architecture.