GS1 — Triticum aestivum

Summary

TRAESCS6A02G298100, designated TaGS1 on bread wheat chromosome 6A, encodes a glutamine synthetase (EC 6.3.1.2) with glutamine synthetase activity, along with annotated functions including glutamate-tRNA ligase, histone acetyltransferase, SUMO transferase, and calmodulin binding activities. The gene is associated with nitrogen metabolism, ammonia assimilation, nitrate assimilation, photorespiration, and ureide breakdown. It has been connected to numerous agronomically important traits including grain yield, grain number, grain weight, grain protein content, harvest index, ear number, tiller number, plant height, flag leaf senescence, leaf chlorosis, photosynthetic rate, chlorophyll content, starch grain synthesis, grain filling period, and flowering time. Localisation evidence links the product to the thylakoid, chloroplast envelope and stroma, cytosolic ribosome, apoplast, plant-type cell wall, and plasmodesmata. Studies of related genes in other species connect the family to drought, salt, and osmotic stress tolerance, nitrogen recycling, and root development.