HY3 (DCAR_029306) — Daucus carota subsp. sativus

Summary

DcHY3 (DCAR_029306) on carrot chromosome 9 encodes a phytochrome family member, containing PAS, GAF, and histidine kinase domains, and is annotated with tetrapyrrole binding and numerous other molecular functions. The gene is associated with regulation of response to red or far red light, detection of light, and positive regulation of the phytochrome signaling pathway, as well as protein-phycocyanobilin linkage and protein catabolic process in the vacuole. It is linked to traits including light quality response, far red and blue light sensitivity, photoperiod sensitivity, chlorophyll ratio, flower diameter, panicle number, grain yield, plant dry weight, vegetative vigor, root system morphology, and copper and glyphosate sensitivity. Associations also extend to phenotypes such as delayed flowering, hypocotyl elongation, anthocyanin synthesis, cold and drought stress response, disease resistance, and carbon assimilation.