GS1 — Triticum turgidum subsp. durum

Summary

TRITD2BV1G234170 (GS1) on durum wheat chromosome 2B encodes a glutamine synthetase (EC 6.3.1.2) and is also annotated with glutamine synthetase activity. The gene is associated with nitrogen metabolism, nitrate assimilation, leaf senescence, and responses to abscisic acid and cadmium. It has been linked to grain protein content, grain weight, grain filling period, and starch grain synthesis, as well as photosynthetic rate, stomatal opening, and photoperiod-sensitive flowering time. The product localises to the chloroplast thylakoid membrane, chloroplast envelope, stroma, thylakoid, apoplast, plant-type cell wall, and plasmodesmata. Studies of related genes in other species connect the family to drought, salt, and osmotic stress tolerance, as well as grain filling and seedling vigour.