GA5 — Oryza sativa Japonica

Summary

OsGA5 (GA20ox2) on rice chromosome 3 encodes a protein with gibberellin 20-oxidase activity, gibberellin 3-beta-dioxygenase activity, flavanone 3-dioxygenase activity, and 2-oxoglutarate dioxygenase activity, and is localized to the cytoplasm. The gene is associated with plant stature, yield, grain chalkiness, seed dormancy, and disease development, including bacterial blight. It is linked to gibberellin homeostasis, panicle, leaf, root, seedling, anther, and pollen traits, as well as to anaerobic respiration, response to flooding, starch metabolism, and meristem development. Additional associations include chalky endosperm, seedling vigour, flag leaf angle, panicle length, grain dimensions, tiller number, days to heading, salinity tolerance, and aluminum tolerance. Related genes in other species are linked to stem growth, internode elongation, flowering time, and seed development.