GS2 — Oryza sativa Indica Group

Summary

BGIOSGA005785 (GS2) on chromosome 2 of Indica rice encodes a Growth-Regulating Factor (GRF) family protein with a WRC domain and a Gln-Leu-Gln (QLQ) domain, and has transcription coactivator activity. This gene is associated with grain size, grain weight, grain length, seed weight, grain filling, and yield. It is linked to responses to deep water, salt, cold, and gibberellin, as well as to cell cycle regulation, cell division, root meristem growth, seed development, and adaxial/abaxial pattern specification. The encoded protein localizes to the nucleus and is connected to GRF4 and GIF1 complex formation, regulation of seed size, and reproductive structure development. Studies of related genes in other species link the family to organ size, seed size, and regeneration efficiency.