| Registro completo |
| Provedor de dados: |
ArchiMer
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| País: |
France
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| Título: |
Pyrococcus CH1, an obligate piezophilic hyperthermophile: extending the upper pressure-temperature limits for life
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| Autores: |
Zeng, Xiang
Birrien, Jean-louis
Fouquet, Yves
Cherkashov, Georgy
Jebbar, Mohamed
Querellou, Joel
Oger, Philippe
Cambon-bonavita, Marie-anne
Xiao, Xiang
Prieur, Daniel
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| Data: |
2009-07
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| Ano: |
2009
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| Palavras-chave: |
Thermococcales
Extremophile
Deep sea hydrothermal vent
High hydrostatic pressure
Archaea
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| Resumo: |
A novel hydrothermal site was discovered in March 2007, on the mid-Atlantic ridge during the cruise 'Serpentine'. At a depth of 4100 m, the site 'Ashadze' is the deepest vent field known so far. Smoker samples were collected with the ROV 'Victor 6000' and processed in the laboratory for the enrichment of anaerobic heterotrophic microorganisms under high-temperature and high-hydrostatic pressure conditions. Strain CH1 was successfully isolated and assigned to the genus Pyrococcus, within the Euryarchaeota lineage within the Archaea domain. This organism grows within a temperature range of 80 to 108 degrees C and a pressure range of 20 to 120 MPa, with optima for 98 degrees C and 52 MPa respectively. Pyrococcus CH1 represents the first obligate piezophilic hyperthermophilic microorganism known so far. Comparisons of growth yields obtained under high-temperature/high-pressure conditions for relative organisms isolated from various depths, showed clear relationships between depth at origin and responses to hydrostatic pressure.
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| Tipo: |
Text
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| Idioma: |
Inglês
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| Identificador: |
http://archimer.ifremer.fr/doc/2009/publication-6812.pdf
DOI:10.1038/ismej.2009.21
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| Editor: |
Nature
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| Relação: |
http://archimer.ifremer.fr/doc/00000/6812/
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| Formato: |
application/pdf
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| Fonte: |
The ISME journal (Multidisciplinary Journal of Microbial Ecology) (1751-7362) (Nature), 2009-07 , Vol. 3 , N. 7 , P. 873-876
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| Direitos: |
2009 Nature Publishing Group
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