GS2 — Triticum turgidum subsp. durum

Summary

TRITD6BV1G196330, also known as GS2 or TtGS2, encodes a growth-regulating factor (GRF) protein on durum wheat chromosome 6B. The product contains a QLQ and WRC domain and functions as a transcription coactivator with ATP and protein binding activity, localizing to the nucleus. This gene is associated with seed development, grain filling, grain weight, and protein content, as well as leaf and floral organ development, root meristem growth, and cell proliferation. It is linked to responses to cold, deep water, and gibberellin, and to traits including water use efficiency, anthocyanin content, and oxidative stress response. Studies of related genes in other species link the family to grain size, heat and cold tolerance, panicle development, and heading date, while other studies connect it to organ size, seed size, and regeneration efficiency.