CCD4 — Brassica oleracea var. botrytis

Summary

BoCCD4, located on chromosome 1 of cauliflower (Brassica oleracea var. botrytis), encodes a carotenoid dioxygenase with 9-cis-epoxycarotenoid dioxygenase activity and metal binding. The gene is associated with beta-carotene and carotene breakdown, as well as lycopene, beta-carotene, xanthophyll, and abscisic acid anabolism. It is linked to chloroplast organization, anther and pollen development, fruit ripening, and responses to salicylate, gibberellin, auxin, and thirst. Associations include carotenoid and chlorophyll content, chloroplast development, leaf development and senescence, seed β-carotene content, and apocarotenoid signaling. The protein localizes to the chloroplast stroma, cytosol, and nucleus. Studies of related genes in other species link the family to carotenoid degradation, apocarotenoid glycoside biosynthesis, and chloroplast RNA editing.