Advances in Study of Ammonium Assimilation and its Regulatory Mechanism in Plants
Received date: 2015-05-05
Accepted date: 2015-08-06
Online published: 2016-03-31
Nitrogen is one of the most important mineral nutrient elements for plant growth and development, playing an essential role in the whole process of plant life. Nitrogen assimilation is a central link for plants to utilize nitrogen and also a factor in low nitrogen use efficiency in plants. It includes two types: assimilation of nitrate (NO3-) and ammonium (NH4+); the latter is the critical step in the process of nitrogen assimilation. The source of NH4+ during ammonium assimilation can be divided into 2 types—primary assimilation and secondary assimilation—but both proceed in the glutamine/glutamate (GS/GOGAT) pathway. Ammonium assimilation requires much energy resources but also consumes abundant carbon skeletons, so it is strictly regulated at different levels including transcription, post-transcription, and post-translation. We review the current progress in study of ammonium assimilation and its regulatory mechanism in plants.
Xiaopeng Xu , Xiangdong Fu , Hong Liao . Advances in Study of Ammonium Assimilation and its Regulatory Mechanism in Plants[J]. Chinese Bulletin of Botany, 2016 , 51(2) : 152 -166 . DOI: 10.11983/CBB15077
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