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    Sulfide ameliorates metal toxicity for deep-sea hydrothermal vent archaea

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    Edgcomb Sulfide.pdf (996.6Kb)
    Date
    2004-04
    Author
    Edgcomb, Virginia P.  Concept link
    Molyneaux, Stephen J.  Concept link
    Saito, Mak A.  Concept link
    Lloyd, Karen G.  Concept link
    Boer, Simone  Concept link
    Wirsen, Carl O.  Concept link
    Atkins, Michael S.  Concept link
    Teske, Andreas  Concept link
    Metadata
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    Citable URI
    https://hdl.handle.net/1912/189
    As published
    https://doi.org/10.1128/AEM.70.4.2551-2555.2004
    DOI
    10.1128/AEM.70.4.2551-2555.2004
    Keyword
     Thermococcus fumicolans; Pyrococcus; Methanocaldococcus jannaschii; Heavy metals 
    Abstract
    The chemical stress factors for microbial life at deep-sea hydrothermal vents include high concentrations of heavy metals and sulfide. Three hyperthermophilic vent archaea, the sulfur-reducing heterotrophs Thermococcus fumicolans and Pyrococcus strain GB-D and the chemolithoautotrophic methanogen Methanocaldococcus jannaschii, were tested for survival tolerance to heavy metals (Zn, Co, and Cu) and sulfide. The sulfide addition consistently ameliorated the high toxicity of free metal cations by the formation of dissolved metal-sulfide complexes as well as solid precipitates. Thus, chemical speciation of heavy metals with sulfide allows hydrothermal vent archaea to tolerate otherwise toxic metal concentrations in their natural environment.
    Description
    Author Posting. © American Society for Microbiology, 2004. This article is posted here by permission of American Society for Microbiology for personal use, not for redistribution. The definitive version was published in Applied and Environmental Microbiology 70 (2004): 2551-2555, doi:10.1128/AEM.70.4.2551-2555.2004.
    Collections
    • Biology
    • Marine Chemistry and Geochemistry (MC&G)
    Suggested Citation
    Applied and Environmental Microbiology 70 (2004): 2551-2555
     

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