GS2 — Triticum turgidum subsp. durum

Summary

TRITD7AV1G011750 (GS2, also known as TtGRF6, TtGRF5, TtGRF3, GRF2, GRF1, GS2, GRF3, GRF6, GRF5, TtGRF2, TtGRF1) on durum wheat chromosome 7A encodes a growth-regulating factor (GRF) family protein with QLQ and WRC domains and transcription coactivator activity, localised to the nucleus. It is associated with seed development, grain filling period, grain weight, grain protein content, and yield, as well as leaf growth and morphology, root meristem growth, root oxidative activity, water use efficiency, anthocyanin content, and responses to cold, gibberellin, and deep water. The gene is also linked to cell division, cell population proliferation, positive regulation of the cell cycle, and developmental processes including floral organ, ovary, pistil, anther, and gynoecium development. Studies of related genes in other species connect the GRF family to grain size, organ size, heat and cold tolerance, salt tolerance, and plant regeneration.