GS2 — Brassica napus

Summary

BnGS2 (DARMORV10_C04P43320.1) on chromosome C04 of oilseed rape encodes a glutamine synthetase, as indicated by its glutamine synthetase activity and glutamine synthetase catalytic and N-terminal domains. The gene is associated with nitrogen metabolism, including nitrate import and assimilation, the ammonia assimilation cycle, and photorespiration. It has been linked to chlorophyll metabolism, proline breakdown, and methylglyoxal anabolism. Associations with agronomic traits include soluble protein and protein content, seed size, photosynthetic rate, drought tolerance, and flowering time. The product localises to plastids, chloroplast thylakoid membranes, and mitochondria. Studies of related genes in other species link the family to nitrogen assimilation, biomass accumulation, and photoperiodic flowering.