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首页> 外文期刊>Proceedings of the National Academy of Sciences of the United States of America >Widespread occurrence of nitrate storage and denitrification among Foraminifera and Gromiida
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Widespread occurrence of nitrate storage and denitrification among Foraminifera and Gromiida

机译：有孔虫和唇形科中硝酸盐的广泛存储和反硝化作用

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摘要

Benthic foraminifers inhabit a wide range of aquatic environments including open marine, brackish, and freshwater environments. Here we show that several different and diverse foraminiferal groups (miliolids, rotaliids, textulariids) and Gromia. another taxon also belonging to Rhizaria, accumulate and respire nitrates through denitrification. The widespread occurrence among distantly related organisms suggests an ancient origin of the trait. The diverse metabolic capacity of these organisms, which enables them to respire with oxygen and nitrate and to sustain respiratory activity even when electron acceptors are absent from the environment, may be one of the reasons for their successful colonization of diverse marine sediment environments. The contribution of eukar-yotes to the removal of fixed nitrogen by respiration may equal the importance of bacterial denitrification in ocean sediments.
机译：底栖有孔虫栖息在广泛的水生环境中，包括开放的海洋，咸淡水和淡水环境。在这里，我们显示了几个不同的有孔虫类（千虫类，轮虫类，纹理类）和格罗米亚。另一类也属于Rhizaria的分类单元，通过反硝化作用积累并释放硝酸盐。在远距离相关的生物中广泛发生表明该特征的古老起源。这些生物的多样化代谢能力使它们能够利用氧气和硝酸盐呼吸并即使在环境中不存在电子受体的情况下也能维持呼吸活动，这可能是它们成功定殖于各种海洋沉积物环境的原因之一。真核生物通过呼吸去除固定氮的贡献可能等于海洋沉积物中细菌反硝化的重要性。

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  • 作者

    Elisa Pina-Ochoa; Signe Hogslund; Emmanuelle Geslin; Tomas Cedhagen; Niels Peter Revsbech; Lars Peter Nielsen; Magali Schweizer; Frans Jorissen; Soren Rysgaard; Nils Risgaard-Petersen;

  • 作者单位

    Center for Geomicrobiology, Department of Biological Sciences, Aarhus University, DK-8000 Aarhus C, Denmark;

    Center for Geomicrobiology, Department of Biological Sciences, Aarhus University, DK-8000 Aarhus C, Denmark;

    Laboratory of Recent and Fossil Bio-Indicators, Angers University, 49045 Angers Cedex, France LEBIM, 85350 Ile d'Yeu, France;

    Section of Marine Ecology, Department of Biological Sciences, Aarhus University, DK-8200 Aarhus N, Denmark;

    Section of Microbiology, Department of Biological Sciences, Aarhus University, DK-8000 Aarhus C, Denmark;

    Geological Institute, ETH Zurich, 8092 Zurich, Switzerland;

    Geological Institute, ETH Zurich, 8092 Zurich, Switzerland;

    Laboratory of Recent and Fossil Bio-Indicators, Angers University, 49045 Angers Cedex, France LEBIM, 85350 Ile d'Yeu, France;

    Greenland Climate Research Centre, 3900 Nuuk, Greenland;

    Center for Geomicrobiology, Department of Biological Sciences, Ny Munkegade 114-116, Building 1540, Aarhus University, DK-8000 Aarhus C, Denmark;

  • 收录信息 美国《科学引文索引》(SCI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    eukaryotic nitrate respiration; nitrogen cycle;

    机译：真核硝酸盐呼吸;氮循环;

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