氮是植物生长的一个重要营养元素,但外源无机氮必须经氮同化转化为有机氮才能为植物所利用。谷氨酰胺合成酶(GS)是参与氮同化过程的关键酶,本文从GS种类、功能、理化和分子生物学性质及基因表达调控等方面介绍了其研究进展。
Nitrogen is an important nutrient for plant growth, but the exogenous inorganic nitrogen must be assimilated into organic nitrogen which can be absorbed by higher plants. Glutamine synthetase (GS) is the key enzyme involved in the process of nitrogen assimilation. In this article, the types, function, physicochemical and molecular bioloay properties and the gene expression of GS were summarized.