CCR2 — Brassica napus

Summary

BnCCR2 (CCR2) on chromosome C08 of oilseed rape encodes a CrtISO-like protein with amine oxidase and FAD/NAD-binding domains and exhibits carotenoid isomerase and redox activities. The gene is associated with carotenoid breakdown and metabolism, as well as anabolism of carotenoids, chlorophyll, lignin, and flavonoids. It is linked to etioplast organization, xylem development, flower and petal formation, and downregulation of chlorophyll anabolism. Associations with flower, petal, and leaf color, carotenoid and lignin content, and plastid development have been reported. The protein localizes to the chloroplast membrane. Studies of related genes in other species link the family to chlorophyll accumulation, photomorphogenesis, prolamellar body formation, and altered carotene accumulation with reduced lutein and delayed greening.