GS2 — Triticum turgidum subsp. durum

Summary

TRITD6BV1G157700, designated GS2 (also known as TtGS2, TtGRF6, TtGRF5, TtGRF3, GRF2, GRF1, GS2, GRF3, GRF6, GRF5, TtGRF2, TtGRF1) on durum wheat chromosome 6B, encodes a growth-regulating factor (GRF) protein containing QLQ and WRC domains. It has transcription coactivator activity, binds ATP and proteins, and localises to the nucleus. The gene is associated with seed development, grain filling period, grain weight, grain protein content, and yield. It is linked to responses to gibberellin, cold, and deep water, as well as positive regulation of cell cycle, cell division, root meristem growth, and leaf growth and development. Associations also include water use efficiency, anthocyanin content, oxidative stress response, and floral organ, ovary, pistil, and anther development traits. Studies of related genes in other species link the family to grain size, organ growth, stress tolerance, and regeneration.