CCD1 — Cucumis melo

Summary

MELO3C032097.2 (CmCCD1) on melon chromosome 7 encodes a carotenoid dioxygenase with 9-cis-epoxycarotenoid dioxygenase activity and metal binding. The gene is associated with carotenoid, carotene, and xanthophyll breakdown, as well as the pentose-phosphate shunt, TCA cycle, fruit development, and response to thirst. Its product localises to the chloroplast stroma, plant-type vacuole, Golgi complex, plasmodesma, cytosol, plasmalemma, and cytoplasm. CmCCD1 is associated with salicylic acid signaling, isoprenoid volatile production, seed carotenoid content and degradation, abscisic acid biosynthesis, chromium tolerance, volatile and blumenol synthesis. Studies of related genes in other species connect the family to fruit flavor and yield, carotenoid content, fruit ripening, color, firmness, and size, as well as stress tolerance, root development, and ABA biosynthesis.