BACKGROUND: Glutamine synthetase (GS) plays a central role in plant nitrogen assimilation. a process intimately linked to soil water availability. We previously showed that hybrid poplar (Populus tremula X alba. INRA 717-1B4) expressing ectopically a pine cytosolic glutamine synthetase gene (GS1a) display enhanced tolerance to drought. https://safeersappliancers.shop/product-category/samsung-rs67n8210s9-american-style-freestanding-65-35-fridge-freezer/