CCD7 — Arabidopsis thaliana

Summary

AT2G44990, also known as CCD7 or MAX3 in Arabidopsis thaliana, encodes a carotenoid cleavage dioxygenase with all-trans-beta-carotene-9',10'-cleaving dioxygenase activity, classified under EC 1.13.11.68. The enzyme localizes to the chloroplast stroma and plastid. CCD7 is associated with strigolactone biosynthesis, carotenoid and xanthophyll breakdown, and the regulation of flavonoid and abscisic acid anabolism. The gene has been linked to shoot and lateral branching, vascular tissue development, secondary thickening, and tissue regeneration. It is also connected to agronomically relevant traits including drought tolerance, nitrogen sensitivity, photosynthetic rate, leaf senescence, flowering time, root morphology, and carotenoid content. Related genes in other species are linked to plant height, root architecture, and responses to salt and low temperature stress.