GS1 — Triticum turgidum subsp. durum

Summary

TRITD2AV1G270980 (GS1, TtGS1) on durum wheat chromosome 2A encodes a GS catalytic domain-containing protein with glutamine synthetase activity (EC 6.3.1.2). This gene is associated with nitrogen metabolism, nitrate assimilation, leaf senescence, and response to abscisic acid. It has been linked to grain protein content, grain weight, grain filling period, starch grain synthesis, photosynthetic rate, stomatal opening, and flowering time traits. The encoded protein is associated with the chloroplast thylakoid membrane, chloroplast envelope, apoplast, and plant-type cell wall. Studies of related genes in other species link the family to root development, drought and salt stress responses, grain filling, and seedling vigour.