Nitrate assimilation by marine heterotrophic bacteria

作     者：JIANG Xue Xia JIAO Nian Zhi Jiang X X;Jiao N Z

作者机构：State Key Laboratory of Marine Environmental Science Xiamen University Institute of Marine Microbes and Ecospheres Xiamen University 

出 版 物：《Science China Earth Sciences》 (中国科学（地球科学英文版）)

年 卷 期：2016年第59卷第2期

页      面：477-483页

核心收录：

学科分类：083001[工学-环境科学] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 070702[理学-海洋化学] 07[理学] 0707[理学-海洋科学] 08[工学] 

基　　金：National Key Basic Research Program of China (Grant No. 2013CB955700) 

主　　题：Nitrate assimilation Assimilatory nitrate reductase gene nas A Heterotrophic bacteria Marine molecular ecology 

摘      要：Nitrate assimilation is a process where bacteria utilize nitrate as a nitrogen source and synthesize it into organic nitrogen. We found that nitrate-assimilating bacteria(NAB) are widely distributed in various marine environments, from surface to the deep ocean and sediment, which indicates that NAB are significant to the oceanic nitrogen cycle. Comparative genomic analysis revealed nitrate-assimilating genes(nas A) in these marine heterotrophic NAB showed different gene arrangements and diverse regulation systems. Summary on recent findings will contribute to understanding the process of nitrate assimilation in NAB and their ecological significance in the nitrogen cycle. A systematic analysis of a number of studies on bacterial nitrate assimilation in marine ecological systems was conducted to clarify directions for future research.