CCD4 — Lactuca sativa

Summary

LsCCD4, encoded by the gene LSAT_V11C100003000 on chromosome 1 of garden lettuce (Lactuca sativa), is a carotenoid dioxygenase with 9-cis-epoxycarotenoid dioxygenase activity, metal and mRNA binding. It is associated with carotenoid and chlorophyll content, chloroplast development and organization, and traits such as seed maturation, salt tolerance, heat sprouting, leaf development, and tuber morphology and carotenoid content. The gene is associated with abscisic acid, ethylene, and xanthophyll anabolism, beta-carotene breakdown, anther development, fruit ripening, seed germination and development, and responses to salicylate and gibberellin. It localizes to the chloroplast thylakoid membrane, stroma, cytosol, and nucleus. Studies of related genes in other species connect the family to carotenoid degradation and accumulation, fruit and taproot color, and drought tolerance.