AO — Triticum turgidum subsp. durum

Summary

TRITD7BV1G215210 (TtAO) on durum wheat chromosome 7B encodes a FAD-binding PCMH-type domain-containing protein with abscisic aldehyde oxidase, aryl-aldehyde oxidase, xanthine dehydrogenase, and indole-3-acetaldehyde oxidase activities, binding FAD, molybdenum cofactor, and 2Fe-2S clusters. The gene is associated with abscisic acid and auxin biosynthesis, carotenoid breakdown, glucosinolate metabolism, and responses to aldehydes, hydrogen peroxide, and thirst. It is linked to photosynthetic rate, carotenoid content, seed germination, dormancy, stomatal movement and closure, leaf senescence, chlorophyll degradation, salt and temperature stress responses, pathogen resistance, root elongation and gravitropism, vascular development, and cell wall biosynthesis. The product localises to plastids, cytosol, and nucleus. Studies of related genes in other species connect the family to drought tolerance, water balance, lignin composition, and grain traits.