AUR3 — Oryza sativa Japonica

Summary

OsAUR3 (also known as OsGH3.11, OsGH3.12, VAS2, and other synonyms) on rice chromosome 11 encodes a GH3 family protein with IAA amido synthetase, JA-amino synthetase, and peptide synthase activities (EC 6.3.2.-). The gene is associated with the regulation of hormone anabolism, cellular auxin homeostasis, jasmonic acid anabolism, and auxin metabolism. It is linked to appressorium formation, defence response to bacteria, systemic acquired resistance, photomorphogenesis, response to insects, and seed development. Associations with agronomic traits include tiller angle, tiller number, plant height, harvest index, grain yield, seed viability, seed dormancy, chlorophyll content, sugar content, and heat tolerance. The gene is also connected to salt tolerance and resistance phenotypes. Studies of related genes in other species link the family to jasmonic acid conjugation and defence signalling.