GW2 — Oryza sativa Indica Group

Summary

BGIOSGA023386 (GW2) on chromosome 6 of Indica rice encodes an uncharacterized protein with ubiquitin ligase activity and zinc binding capability, belonging to the Sip5/DA2 protein family. The gene is associated with the regulation of seed size, protein ubiquitination, and detoxification processes, and its product localizes to the cytoplasm. GW2 is linked to grain size, grain length, grain number, grain weight, grain yield, panicle number, spikelet number, spikelet fertility, rachis length, leaf width, and plant height. Related genes in other species are linked to additional grain traits including grain thickness, grain appearance, flour protein content, amylose content, starch content, seed weight, seed size, seed dormancy, seed shattering, tiller number, heading time, and chlorophyll content.