GRF1 — Sorghum bicolor

Summary

SORBI_3005G150900 (SbGRF1) on sorghum chromosome 5 encodes a Growth-Regulating Factor (GRF) protein with a QLQ and WRC domain, acting as a transcription coactivator that binds DNA and cis-regulatory regions. It is associated with the regulation of gene expression, cell cycle, meristem and root meristem growth, leaf morphogenesis and senescence, seed development, and responses to gibberellin, deep water, and nematodes. SbGRF1 has been linked to aphid resistance, salt and heat stress tolerance, water use efficiency, anthocyanin content, seed weight, and various floral, leaf, and root traits. Related genes in other species link the family to organ size, cell proliferation, leaf development, plant architecture, tillering, yield, and chilling tolerance.