GW2 — Oryza sativa Indica Group

Summary

BGIOSGA023384 (GW2) on chromosome 6 of Indica rice encodes an uncharacterized protein with ubiquitin ligase activity and zinc binding, belonging to the Sip5/DA2 domain family. The gene is associated with regulation of seed size, protein ubiquitination, and detoxification, and its product localizes to the cytoplasm. GW2 is associated with grain size, grain length, grain number, grain weight, grain shape, grain yield, panicle number, spikelet number, spikelet fertility and sterility, rachis length, leaf width, plant height, and grain filling period. Studies of related genes in other species link the family to additional traits such as seed weight, seed size, seed shattering, seed dormancy, amylose content, starch content, protein content, heading time, tiller number, and chlorophyll content.