AO — Zea mays

Summary

ZM00001EB060250 (ZmAO, AO1) on maize chromosome 1 encodes an aldehyde oxidase with abscisic aldehyde oxidase, aryl-aldehyde oxidase, xanthine dehydrogenase, and indole-3-acetaldehyde oxidase activities, binding molybdenum cofactor, FAD, and 2Fe-2S clusters. The gene is associated with abscisic acid and indole-3-acetic acid biosynthesis, hormone metabolism, and responses to water and salt stress. Associations include seedling vigour, grain yield, seed weight, plant height, root length, chlorophyll content, photosynthetic rate, leaf water potential, water use efficiency, anthesis-silking interval, drought sensitivity, lignin content, and heterosis. The product localises to plastid, cytosol, cytoplasm, and nucleus. Studies of related genes in other species link the family to ABA biosynthesis, stomatal movement, drought tolerance, and pathogen resistance, and to grain, panicle, and spikelet traits.