GS2 — Triticum turgidum subsp. durum

Summary

TRITD7AV1G053020, also known as GS2, encodes a growth-regulating factor (GRF) protein containing QLQ and WRC domains and functions as a transcription coactivator with ATP and protein binding activity, localizing to the nucleus. This durum wheat gene on chromosome 7A is associated with seed development, grain filling period, grain weight, protein content, and yield traits. It is linked to leaf and floral organ development, root meristem growth, cell division and proliferation, response to gibberellin and cold stress, and water use efficiency. Studies of related genes in other species link the family to grain size, organ growth, stress tolerance, and plant regeneration, though these associations are not yet established in durum wheat.