CCD1 — Triticum aestivum

Summary

TaCCD1 (TRAESCS5B02G001800) on wheat chromosome 5B encodes a carotenoid cleavage dioxygenase 1 with 9-cis-epoxycarotenoid dioxygenase activity, an oxidoreductase that incorporates two oxygen atoms and binds metal ions. The gene is associated with abscisic acid biosynthesis and alkali stress tolerance in wheat, as well as seed carotenoid content and degradation. Annotated biological processes include carotenoid and xanthophyll breakdown, abscisic acid metabolism, pre-harvest sprouting, anther and pollen development, fruit ripening, and responses to gibberellin, auxin, and salicylate. The product localizes to chloroplast thylakoid membranes, stroma, vacuoles, Golgi, plasmodesmata, cytosol, and plasma membrane. Related genes in other species are linked to traits such as seed dormancy, drought tolerance, herbivore resistance, and carotenoid content in grains.