AO — Triticum turgidum subsp. durum

Summary

TRITD7BV1G215290 (TtAO) on durum wheat chromosome 7B encodes a FAD-binding PCMH-type domain-containing protein and an aldehyde oxidase/xanthine dehydrogenase a/b hammerhead domain-containing protein, with abscisic aldehyde oxidase, aryl-aldehyde oxidase, xanthine dehydrogenase, and indole-3-acetaldehyde oxidase activities, containing FAD-binding, 2Fe-2S cluster-binding, and molybdenum cofactor-binding domains. The gene is associated with abscisic acid and auxin biosynthesis, carotenoid breakdown, glucosinolate metabolism, and responses to hydrogen peroxide, aldehydes, and dehydration. It is linked to photosynthetic rate, carotenoid content, seed germination, dormancy, stomatal movement and closure, leaf senescence, salt and temperature stress responses, pathogen resistance, root elongation and gravitropism, and vascular development. The protein localizes to plastids, cytosol, and nucleus. Related genes in other species are associated with ABA biosynthesis, drought tolerance, and water balance homeostasis.