CCD1 — Daucus carota subsp. sativus

Summary

DCAR_003121, designated DcCCD1 on carrot chromosome 1, encodes a protein with a carotenoid oxygenase domain and 9-cis-epoxycarotenoid dioxygenase activity, conferring carotenoid dioxygenase activity and metal binding. The gene is associated with carotenoid and carotene breakdown, as well as anabolism of beta-carotene, xanthophyll, lycopene, carotenoids, and abscisic acid. It is linked to anther and pollen development, fruit ripening, responses to salicylate, gibberellin, auxin, thirst, and salinity, ABA signaling, and NO storage. The product localizes to the chloroplast thylakoid membrane and stroma. Carotenoid content is linked to this gene. Studies of related sequences in other species connect the family to abscisic acid content, fruit weight, chlorophyll content, and drought and salt tolerance.