CO — Phaseolus vulgaris

Summary

PHAVU_008G022925, designated PvCO, encodes a CONSTANS-like protein containing a CCT domain. In French bean (Phaseolus vulgaris) on chromosome 8, this gene is associated with a wide array of molecular functions including euchromatin binding, transcription factor binding, and histone methylase activities, as well as photoreceptor activity for red and far-red light. PvCO is linked to the regulation of flowering time, particularly the upregulation and downregulation of short-day photoperiodism, response to long-day and short-day conditions, and photoentrainment of the circadian clock. It has also been connected to traits such as photoperiod sensitivity, vegetative vigor, stem length, leaf angle, fruit set, seed storage protein content, iron content, and responses to water stress, nematode damage, and spot blotch. Studies of related genes in other species link the family to photoperiod-dependent flowering time control, drought tolerance, and seed development.