Nitrogen (N) is the driving force for crop yields; however, excessive N application in
agriculture not only increases production cost, but also causes severe environmental …

Nitrogen (N) availability is a major factor determining plant growth and productivity. Plants
acquire inorganic N from the soil, mainly in the form of nitrate and ammonium. To date …

Glutamine synthetase assimilates ammonium into amino acids, thus it is a key enzyme for
nitrogen metabolism. The cytosolic isoenzymes of glutamine synthetase assimilate …

Overexpression of the cytosolic enzyme glutamine synthetase 1 (GS1) has been
investigated in numerous cases with the goal of improving crop nitrogen use efficiency …

Nitrogen (N) is the most important, essential nutrient for all living organisms on earth; it is
present in a number of complex organic molecules and plays extremely important roles in …

A major source of inorganic nitrogen for rice plants grown in paddy soil is ammonium ions.
The ammonium ions are actively taken up by the roots via ammonium transporters and …

Rice (Oryza sativa L.) plants possess three homologous but distinct genes for cytosolic
glutamine synthetase (GS1): these are OsGS1; 1, OsGS1; 2, and OsGS1; 3. OsGS1; 1 was …

Glutamine synthetase (GS) is a key enzyme involved in the nitrogen metabolism of higher
plants. Abiotic stresses have adverse effects on crop production and pose a serious threat to …

Background Nitrogen (N) is a key macronutrient essential for plant growth, and its availability
has a strong influence on crop development. The application of synthetic N fertilizers on …

Ammonium is a preferential nitrogen form for rice (Oryza sativa) grown in paddy field, but the
molecular mechanisms for ammonium uptake have not been well understood. We …