AO — Sorghum bicolor

Summary

SORBI_3001G062300 (SbAO) encodes an aldehyde oxidase, a molybdenum cofactor- and FAD-binding enzyme with abscisic aldehyde oxidase, aryl-aldehyde oxidase, xanthine dehydrogenase and indole-3-acetaldehyde oxidase activities. In sorghum, SbAO is associated with abscisic acid and auxin biosynthesis, cellular response to aldehyde, response to hydrogen peroxide and stress, chlorophyll fluorescence, and glucosinolate metabolism. The protein localises to the plastid, cytosol and nucleus. SbAO is linked to photosynthetic rate, seed germination, seed dormancy, stomatal movement and closure, leaf senescence, salt and temperature stress responses, pathogen resistance, root elongation and gravitropism, vascular development, cell wall biosynthesis, and a wilty phenotype. Studies of related genes in other species connect the family to ABA biosynthesis, drought tolerance, water balance homeostasis, and basal defence.