YUC — Brachypodium distachyon

Summary

BdYUC (BRADI_4G40750V3) encodes a flavin-containing monooxygenase with indole-3-pyruvate monooxygenase activity (EC 1.14.13.168), central to auxin (IAA) biosynthesis. In Brachypodium distachyon, this gene is associated with the regulation of auxin biosynthesis, leaf and root development, floral meristem determinacy, inflorescence development, embryogenesis, drought recovery, regeneration, and responses to cytokinin, oxidative stress, herbicides, and metals. It is linked to IAA content and a range of phenotypes including seed size, shoot branching, lateral root formation, anther dehiscence, pollen maturation, senescence, and heavy metal stress tolerance. The protein localizes to the endoplasmic reticulum, Golgi membrane, cytosol, mitochondria, and extracellular space. Studies of related genes in other species connect the family to additional traits such as phototropism, shade avoidance, grain development, and tolerance to drought and alkaline salinity.