20ox2 — Oryza sativa Japonica

Summary

OS01G0883800 (symbol 20ox2, also known as GA20OX5) on rice chromosome 1 encodes a protein with domains including an iron/ascorbate oxidoreductase and a 2-oxoglutarate/Fe(II)-dependent dioxygenase domain, and is annotated with gibberellin 20-oxidase activity, flavanone 3-dioxygenase activity, dioxygenase activity, 2-oxoglutarate dioxygenase activity, vitamin C binding, redox activity, and metal binding. The gene is associated with gibberellin biosynthesis and signaling, responses to flooding, abscission, seed germination, flower development, defense against oomycetes, and many other biological processes. It has been linked to numerous agronomic traits including culm length and strength, panicle weight and number, spikelet fertility, grain yield, grain length and shape, seed size, seed shattering and dormancy, vivipary, tiller angle, leaf length, stem elongation, submergence tolerance, heat tolerance, heterosis, and protein content. The product localizes to the cytoplasm and nucleus. Studies of related genes in other species link the family to grain protein content and anthesis time.