GS1 — Triticum aestivum

Summary

TRAESCS2B02G528300 (TaGS1) on wheat chromosome 2B encodes a glutamine synthetase (EC 6.3.1.2) with glutamine synthetase activity. The gene is associated with nitrogen metabolism, grain nitrogen concentration, nitrogen uptake, and seedling growth in wheat. It has been linked to grain nitrogen content, nitrogen recycling, flag leaf senescence, grain filling, grain yield per plant, harvest index, grain protein content, grains per spike, tiller number, spike length, stripe rust, heat tolerance, photosynthetic rate, stomatal resistance, grain number, leaf senescence, and seed dormancy. Associations also include the ammonia assimilation cycle, nitrate assimilation, photorespiration, phloem transport, response to cadmium, and ureide breakdown. The product localizes to the thylakoid, chloroplast envelope, stroma, apoplast, plant-type cell wall, vacuole, and plasmodesma. Studies of related genes in other species link the family to salt and drought stress responses, aluminum tolerance, and seedling vigour.