GS1 — Oryza sativa Indica Group

Summary

BGIOSGA011196 (GS1, OiGS1) on chromosome 3 of indica rice encodes a glutamine synthetase (EC 6.3.1.2) with a Gln_synt_N domain, and is also annotated for glutamyl-tRNA aminoacylation, histone acetyltransferase activity, SUMO transferase activity, and salicylic acid binding. The gene is associated with nitrogen utilization, leaf senescence, response to abscisic acid, and regulation of gene expression. It localizes to the chloroplast thylakoid membrane, chloroplast envelope, apoplast, and plasmodesmata. GS1 is linked to grain weight, grain length, grain yield, panicle weight, spikelet weight, protein content, starch grain synthesis, photosynthetic rate, stomatal opening, and flowering time. It is also associated with salt, drought, and osmotic stress tolerance, as well as cadmium response and blue light response. Related genes in other species link the family to nitrogen assimilation, biomass, and desiccation tolerance.