LCYE — Triticum turgidum subsp. durum

Summary

TRITD3BV1G121950 (LCYE, TtLCYE) on durum wheat chromosome 3B encodes a protein with lycopene epsilon cyclase, lycopene beta cyclase, neoxanthin synthase, capsorubin synthase, and capsanthin synthase activities, and belongs to the lycopene cyclase b/e and FAD/NAD-binding superfamilies. The gene is associated with lutein, carotene and carotenoid content, as well as spike length, plant height, chlorophyll content and photosynthetic rate. It is linked to photoprotection, cold acclimation, photosynthesis light harvesting, and the biosynthesis of lutein, beta-carotene, xanthophylls, abscisic acid and ubiquinone. The product localises to plastids, chloroplast and chromoplast membranes, and mitochondria. Studies of the Arabidopsis relative LUT2 connect the family to nonphotochemical quenching, xanthophyll cycle efficiency, high light tolerance, photooxidative stress resistance, UV-B-induced DNA damage, and stress tolerance.