COP1 — Pisum sativum

Summary

PSAT1G081240 (symbol COP1, also known as PsSPA2) on chromosome 1LG6 of garden pea (Pisum sativum) encodes a member of the SPA1/2/3/4 protein family. The product possesses nucleosome array spacer, DNA helicase, blue light photoreceptor, and ubiquitin ligase activities, and binds chromatin, histones, FAD, and damaged DNA. It localises to the nucleus, cytosol, plastid, and plant-type vacuole, and is a component of the nuclear ubiquitin ligase complex. The gene is associated with the regulation of photomorphogenesis, anthocyanin metabolism, circadian calcium oscillation, meristem size, leaf morphogenesis, and responses to far-red, blue, and UV light, strigolactone, and heat stress. It is linked to traits including photoperiod-sensitive flowering time, fruit length, seed viability, seedling hypocotyl length, leaf temperature, lignin content, and responses to viral disease and insect damage. Studies of related genes in other species connect the family to UV-B stress resistance, anthocyanin accumulation, flowering time, and circadian period.