GS2 — Oryza sativa Indica Group

Summary

BGIOSGA022056 (GS2, also known as OiGRF1–6) encodes a growth-regulating factor (GRF) family protein with a QLQ and WRC domain, annotated as a transcription coactivator that binds ATP and other proteins and localises to the nucleus. In indica rice, GS2 is associated with grain size, heading date, growth, and root meristem growth, and is linked to responses to deep water, salt, cold, and gibberellin, as well as positive regulation of the cell cycle and cell division. The gene is further associated with grain weight, grain filling period, seed weight, grain length, water use efficiency, anthocyanin content, oxidative stress response, and heat and cold tolerance. Related genes in other species are linked to organ size, seed size, salt tolerance, and regeneration efficiency.