Major gradients in putatively nitrifying and non-nitrifying Archaea in the deep North Atlantic

Hélène Agogué, Maaike Brink, Julie Dinasquet and Gerhard J. Herndl ()
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Hélène Agogué: Royal Netherlands Institute for Sea Research (Royal NIOZ), PO Box 59, 1790 AB Den Burg, Texel, The Netherlands
Maaike Brink: Royal Netherlands Institute for Sea Research (Royal NIOZ), PO Box 59, 1790 AB Den Burg, Texel, The Netherlands
Julie Dinasquet: Royal Netherlands Institute for Sea Research (Royal NIOZ), PO Box 59, 1790 AB Den Burg, Texel, The Netherlands
Gerhard J. Herndl: Royal Netherlands Institute for Sea Research (Royal NIOZ), PO Box 59, 1790 AB Den Burg, Texel, The Netherlands

Nature, 2008, vol. 456, issue 7223, 788-791

Abstract: Planktonic Archaea: a varied diet Crenarchaeota, single-celled planktonic Archaea, account for up to a third of all prokaryotic cells in the oceans on some estimates, and are thought to be responsible for the majority of ammonia oxidation in terrestrial and marine environments. However, recent studies have suggested that not all species are autotrophic. Using a comprehensive data set it is now shown that a significant proportion of marine crenarchaeota lack the genes required for ammonia oxidation, suggesting that they are heterotrophs, consuming organic matter as their main carbon and energy source. These results provide insight into the physiology of this important group of microorganism and its impact on global nutrient cycles.

Date: 2008
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DOI: 10.1038/nature07535

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