Fig. 1From: Grazing intensity changed the activities of nitrogen assimilation related enzymes in desert Steppe PlantsSchematic diagram of plant nitrogen absorption and nitrogen assimilation process. The picture on the left shows the roots and leaves of plants, and the picture on the right shows the process of plant roots absorbing No3− and NH4+ in soil and nitrogen assimilation catalyzed by enzymes. NR: nitrate reductase; NiR: nitrite reductase; GS: glutamine synthetase; GOGAT: glutamic acid synthetase; GOT: Glutamic oxaloacetic transaminase; GPT: glutamic pyruvate transaminase; Glu: glutamate; Gln: glutamine; Asp: Aspartic; Asn: AsparaginesBack to article page