Until recently, the reductive amination of 2-oxoglutarate catalyzed by the enzyme glutamate dehydrogenase has been considered as the main reaction of ammonia assimilation in plants. Now there is convincing evidence that most of the inorganic nitrogen available to a plant is incorporated into the amide amino group of glutamine via the enzyme glutamine synthetase (L-glutamate ammonia ligase— ADP, GS). Subsequently [...]
IN this article we will discuss about the Subject-Matter and Mechanism of Nitrogen Fixing Systems. Subject-Matter of Nitrogen Fixing Systems: Blue-green algae share with bacteria the potentiality of fixing atmospheric nitrogen. To date, nearly 50 spp. are reported to be active nitrogen fixers. Nitrogen fixation was demonstrated initially in Nostocpunctiformae and Anabaena sp. In 1968, Fay made the suggestion that [...]
In this article we will discuss about Processes of Nitrogen Metabolism. Processes of Nitrogen Metabolism: Like carbon, hydrogen and oxygen, nitrogen is also one of the most prevalent essential macro-elements which regulates plant growth, especially in agricultural systems. The main source of nitrogen for the construction of nitrogenous organic compounds is the atmosphere. It occurs in such essential biomolecules as [...]