GS2 — Oryza sativa Japonica

Summary

Rice gene GS2 (also known as GRF1, OsGRF5, GRF6, OsGRF6, GRF5, or OsGRF1) on chromosome 2 encodes a growth-regulating factor (GRF) family protein with a QLQ and WRC domain, possessing transcription coactivator activity, ATP binding, and protein binding functions. It localizes to the nucleus and is associated with numerous developmental and metabolic processes including response to deep water, nitrogen utilization, positive regulation of cell cycle, organogenesis, leaf development, root meristem growth, floral organ development, and photorespiration. GS2 is linked to agronomically important traits such as grain yield, grain length, grain width, grain thickness, grain shape, grain appearance, seed weight, tiller number, leaf angle, leaf length, stem elongation, heading date, water use efficiency, anthocyanin content, and stress tolerance including heat and cold tolerance. Related genes in other species are linked to organ size, seed size, and regeneration efficiency.