GS2 — Oryza sativa Indica Group

Summary

BGIOSGA005497 (GS2, also known as GRF1) on chromosome 2 of Indica rice encodes a growth-regulating factor (GRF) protein containing QLQ and WRC domains and functions as a transcription coactivator with ATP and protein binding activity. This gene is associated with grain size, heading date, and growth in rice. It is linked to responses to deep water, salt, cold, and gibberellin, as well as positive regulation of the cell cycle, cell division, root meristem growth, seed development, and adaxial/abaxial pattern specification. The protein localizes to the nucleus. Associations also include grain weight, grain length, seed weight, grain filling period, water use efficiency, anthocyanin content, oxidative stress response, and various reproductive and vegetative development traits. Related genes in other species link the GRF family to organ size, seed size, salt tolerance, and plant regeneration.