AO — Triticum turgidum subsp. durum

Summary

TRITD7AV1G264670 (symbol AO, also known as TtAO) on durum wheat chromosome 7A encodes a FAD-binding PCMH-type domain-containing protein and an aldehyde oxidase/xanthine dehydrogenase second molybdopterin binding domain-containing protein, with abscisic aldehyde oxidase, aryl-aldehyde oxidase, xanthine dehydrogenase, indole-3-acetaldehyde oxidase, benzaldehyde dehydrogenase (NAD+), and aldehyde oxidase activities, and contains FAD-binding, molybdopterin-binding, and 2Fe-2S cluster domains. The gene is associated with abscisic acid and auxin biosynthesis, carotenoid breakdown, glucosinolate metabolism, and responses to hydrogen peroxide and dehydration. It has been linked to plastid, cytosol, and nuclear localisation. Associations include carotenoid content, photosynthetic rate, seed germination, dormancy, salt and temperature stress responses, stomatal movement, leaf senescence, pathogen resistance, and root elongation. Studies of related genes in other species connect the family to ABA biosynthesis, wilty phenotypes, and drought tolerance, and to grain and spikelet traits.