GS2 — Brassica napus

Summary

BnGS2 (DARMORV10_A04P09810.1) on chromosome A04 of oilseed rape encodes a glutamine synthetase, as indicated by its glutamine synthetase activity and glutamine synthetase catalytic domain. The gene is associated with nitrogen homeostasis, ammonia assimilation, and nitrogen utilization, and has been linked to grain size, seed weight, seed size, protein content, and soluble protein content. It is also connected to photosynthetic rate, net photosynthetic rate, leaf area index, plant height, root dry weight, root length, root volume, and root fresh weight. Associations with drought tolerance, salt stress tolerance, abscisic acid sensitivity, stomatal resistance, stomatal opening, leaf water potential, and proline content have been reported. The encoded protein localizes to plastids, chloroplast thylakoid membrane, chloroplast stroma, and mitochondria. Studies of related genes in other species link the family to nitrogen assimilation, desiccation tolerance, and lateral root development.