AOX2 — Daucus carota subsp. sativus

Summary

DCAR_029210 (symbol AOX2, also known as DcAOX2) on carrot chromosome 9 encodes a protein of the AOX superfamily and AOX domain, with ubiquinol:oxygen oxidoreductase, alternative oxidase, and superoxide-generating NADPH oxidase activities, and metal binding. The gene is associated with alternative respiration, electron transfer, and structural organization, and its product localizes to the mitochondrial inner membrane and envelope. AOX2 is associated with respiration rate, photosynthetic rate, chloroplast biogenesis, nonphotochemical quenching, leaf variegation, germination, seed germination, and carotenogenesis. Studies of related genes in other species link the AOX family to variegated leaf, chloroplast development, chlorophyll content, and plant height traits.