HY3 — Cucumis melo

Summary

MELO3C006717.2 (CmHY3) on melon chromosome 7 encodes a phytochrome family member, containing phytochrome, PAS, GAF and histidine kinase domains, and is associated with tetrapyrrole binding. The gene is linked to regulation of response to red or far red light, positive regulation of phytochrome signaling, and protein-bilin linkage. It is associated with numerous agronomic traits including grain yield, panicle number, flower diameter, fruit set, branch angle, leaf area, plant dry weight, vegetative vigor, photoperiod sensitivity, far red and blue light sensitivity, chlorophyll ratio, copper and glyphosate sensitivity, and phenolic compound content. Associations also include flowering time, drought escape, and reproductive structure development pathways. Related genes in other species link the phytochrome family to fruit ripening, tuberization, carotenoid accumulation, senescence, and biotic and abiotic stress responses.