GS2 — Triticum turgidum subsp. durum

Summary

TRITD7BV1G027670, designated GS2 (also known as TtGRF6, TtGRF5, TtGRF3, GRF2, GRF1, GS2, GRF3, GRF6, GRF5, TtGRF2, TtGRF1) on durum wheat chromosome 7B, encodes a GRF family protein containing QLQ and WRC domains and annotated as a transcription coactivator with ATP and protein binding activities. This nuclear protein is associated with seed development, grain filling period, grain weight, grain protein content, and yield traits, as well as leaf growth, root meristem growth, cell division, cell proliferation, and cell size. It is linked to responses to cold, deep water, and gibberellin, oxidative stress response, water use efficiency, anthocyanin content, and floral organ, ovary, pistil, anther, and gynoecium development. Studies of related genes in other species link the GRF family to grain size, organ growth, regeneration, and stress tolerance.