CCD1 — Solanum lycopersicum

Summary

SOLYC01G087250.3, also known as CCD1 or NCED1, encodes a carotenoid dioxygenase with 9-cis-epoxycarotenoid dioxygenase activity and metal binding capability, placing it in the carotenoid oxygenase family. In tomato, this gene is associated with fruit ripening, pigmentation, aroma, and isoprenoid volatile production, as well as stress responses including cold, drought, and salt tolerance. It is linked to abscisic acid biosynthesis, xanthophyll breakdown, and apocarotenoid production. The gene has been connected to fruit yield, size, firmness, weight, sugar content, and flavor traits, along with root development, plant height, and chlorophyll content. Localization evidence places the product in the chloroplast stroma, cytosol, and other cellular compartments. Studies of related genes in other species link the family to carotenoid cleavage, β-ionone emission, and flavor biosynthesis.