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›› 2020, Vol. 37 ›› Issue (4): 433-441.DOI: 10.7523/j.issn.2095-6134.2020.04.001

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Carbon-nitrogen biogeochemical cycle processes driven by ammonia-oxidizing archaea in marine environment

HONG Yiguo1,2, HE Xiang1, WU Jiapeng1, LIU Xiaohan1,2   

  1. 1. Key Laboratory for Water Quality and Conservation of the Pearl River Delta of Ministry of Education, Institute of Environmental Research at Greater Bay, Guangzhou University, Guangzhou 510006, China;
    2. School of Environmental Science and Engineering, Guangzhou University, Guangzhou 510006, China
  • Received:2019-04-08 Revised:2019-06-26 Online:2020-07-15

Abstract: Ammonia-oxidizing archaea (AOA), one kind of the most abundant prokaryotes in the seawater, is widely distributed in the marine environment. As the dominant microorganism of ammonia oxidation in the ocean, AOA fixes carbon with chemoautotroph under oligotrophic conditions and plays an important role in marine nitrogen and carbon cycles. This autotrophic carbon sequestration driven by AOA ammonia oxidation process is an important energy source in deep sea, which is significant for understanding the imbalance between organic carbon input and microbial energy demand in deep sea. At the same time, the energy from this autotrophic microorganism fuels the deep-sea ecological system. In this paper, we review the diversity distribution of AOA and the process and function of AOA in biogeochemical cycles of carbon and nitrogen in order to provide information for the researchers in this field.

Key words: ammonia-oxidizing archaea, ammonia-oxidizing process, chemoautotrophic carbon-fixing, biogeochemical cycle, marine water column

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