GS2 — Oryza sativa Indica Group

Summary

BGIOSGA022506 (GS2, also known as OiGRF6, OiGRF5, OiGRF3, GRF2, OiGRF2, GRF1, GS2, OiGRF1, GRF3, GRF6, GRF5) on chromosome 6 of Indica rice 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 localizes to the nucleus. This gene is associated with grain size, heading date, growth, and grain weight, as well as responses to deep water, salt, cold, and gibberellin. It is linked to positive regulation of cell cycle, cell division, root meristem growth, seed development, and adaxial/abaxial pattern specification. Associations also include grain filling period, seed weight, grain length, leaf morphology, water use efficiency, anthocyanin content, oxidative stress response, and heat and cold tolerance. Studies of related genes in other species link the family to organ size, seed size, salt tolerance, and plant regeneration.