A ubiquitous thermoacidophilic archaeon from deep-sea hydrothermal vents

Anna-Louise Reysenbach (), Yitai Liu, Amy B. Banta, Terry J. Beveridge, Julie D. Kirshtein, Stefan Schouten, Margaret K. Tivey, Karen L. Von Damm and Mary A. Voytek
Additional contact information
Anna-Louise Reysenbach: Portland State University
Yitai Liu: Portland State University
Amy B. Banta: Portland State University
Terry J. Beveridge: University of Guelph
Julie D. Kirshtein: US Geological Survey
Stefan Schouten: Royal Netherlands Institute for Sea Research
Margaret K. Tivey: WHOI
Karen L. Von Damm: University of New Hampshire
Mary A. Voytek: US Geological Survey

Nature, 2006, vol. 442, issue 7101, 444-447

Abstract: Passing the acid test In spite of the extreme environmental conditions, deep-sea hydrothermal vents are home to a multitude of microbial species. But one ingredient was missing: terrestrial hot acid springs are inhabited by acidophiles, but although theory predicts the presence of acidic microhabitats in sulphide deposits at deep-seavents, until now all microbes isolated from these deposits have been neutrophiles, or at best acid tolerant. Now, at last, an extreme thermoacidophilic microbe has been isolated from a hydrothermal vent. It's not a bacterium, but a member of the Archaea DHVE2 (deep-sea hydrothermal vent Euryarchaeota 2) lineage. It grows at pHs between 3.3 and 5.8 and at temperatures of 55–75°C. It constitutes up to 15% of the archaeal population so may be the main player in the iron and sulphurcycles in these environments.

Date: 2006
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DOI: 10.1038/nature04921

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