ACO1 — Capsicum annuum

Summary

CaACO1 (T459_30792) on pepper chromosome 12 encodes an aminocyclopropanecarboxylate oxidase (ACC oxidase, EC 1.14.17.4), a 2-oxoglutarate-dependent dioxygenase that binds vitamin C and metal ions. This gene is associated with ethylene biosynthesis, fruit ripening, and fruit shelf life, as well as responses to wounding, senescence, salt stress, flooding, heat, cold, and necrotrophic infection. It is linked to chlorophyll metabolism, coumarin and fatty acid metabolism, root development, immune and defense responses, cell death, virus-induced post-transcriptional gene silencing, and signal transduction. The encoded protein localizes to the cytoplasm. Studies of related genes in other species connect the family to ethylene production, disease resistance, fruit firmness, cold tolerance, and traits including lycopene, carotenoid, flavonoid, and chlorophyll content, as well as plant height, root development, and water use efficiency.