| High-pressure tolerance in Halobacterium salinarum NRC-1 and other non-piezophilic prokaryotes. | |
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MedLine Citation:
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PMID: 22212652 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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In this study, we examined the high-pressure survival of a range of prokaryotes not found in high-pressure environments to determine the effects of adaptations to osmotic and oxidative stresses on piezo-resistance. The pressure survivals of Halobacterium salinarum NRC-1, Deinococcus radiodurans R1, and Chromohalobacter salexigens were compared to that of Escherichia coli MG1655. C. salexigens, which uses the compatible solute ectoine as an osmolyte, was as piezo-sensitive as E. coli MG1655, suggesting that ectoine is not a piezolyte. D. radiodurans R1 and H. salinarum NRC-1, both resistant to oxidative stress, were found to be highly piezo-resistant. H. salinarum NRC-1 showed nearly full survival after pressurization up to 400 MPa; a survival 3.5 log units higher than E. coli MG1655. This piezo-resistance was maintained in H. salinarum NRC-1 for pressurizations up to 1 h. We hypothesize that the high-pressure resistance of H. salinarum NRC-1 is due to a combination of factors including cell envelope structure and the presence of intracellular salts. |
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Authors:
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Adrienne Kish; Patrick L Griffin; Karyn L Rogers; Marilyn L Fogel; Russell J Hemley; Andrew Steele |
Publication Detail:
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Type: JOURNAL ARTICLE Date: 2012-1-3 |
Journal Detail:
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Title: Extremophiles : life under extreme conditions Volume: - ISSN: 1433-4909 ISO Abbreviation: - Publication Date: 2012 Jan |
Date Detail:
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Created Date: 2012-1-3 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9706854 Medline TA: Extremophiles Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Affiliation:
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Geophysical Laboratory, Carnegie Institution of Washington, 5251 Broad Branch Rd., NW, Washington, DC, 20015, USA, adrienne.kish@igmors.u-psud.fr. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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