BOLND125_C01P008450.1_BOLND125_V1 — Brassica oleracea var. botrytis

Summary

BoHY3, the cauliflower (Brassica oleracea var. botrytis) gene on chromosome 1, encodes a phytochrome protein, a member of the phytochrome A-E family with tetrapyrrole binding and photoreceptor activity. It is associated with detection of light, positive regulation of the phytochrome signaling pathway, regulation of plant organ formation and organ growth, and downregulation of chlorophyll anabolism. The gene is linked to numerous agronomic traits including grain yield, panicle number, flower diameter, fruit set, leaf area, stem length, plant dry weight, vegetative vigor, and responses to light quality, far red light, and submergence. It is also connected to phenotypes such as carbon assimilation, starch synthesis, defense response, and ABA sensitivity. Studies of related genes in other species link the phytochrome family to phytochrome-mediated light signaling, shade avoidance, photoperiod sensitivity, carotenoid accumulation, and stress tolerance including drought, freezing, and oxidative stress.