DARMORV10_A06P06260.1 — Brassica napus

Summary

BnHY8 (also known as PHYA, HY8, FRE1, BnFHY2, BnFRE1, FHY2, and BnPHYA) on chromosome A06 of oilseed rape (Brassica napus) encodes a phytochrome A-E family protein with photoreceptor activity, tetrapyrrole binding, and multiple domains including Phy_HATPase-like, PAS, GAF, and a histidine kinase domain. This gene is associated with detection of light, regulation of response to red or far red light, positive regulation of the phytochrome signaling pathway, and downregulation of chlorophyll anabolism. It is linked to grain yield, flower diameter, fruit set, leaf area, plant growth hormone response, photoperiod sensitivity, and far red light sensitivity. It is also associated with phytochrome-mediated photoresponses, heat stress tolerance, hypocotyl length, anthocyanin accumulation, and jasmonate signaling. Related genes in other species link the family to shade-induced hypocotyl elongation, far-red light signaling, floral initiation, and pathogen defense.