| Lytic failure in cross-inoculation assays between phages and prokaryotes from three aquatic sites of contrasting salinity. | |
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MedLine Citation:
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PMID: 20735486 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Little is known about the ability of phages to successfully colonize contrasting aquatic niches. We conducted experimental cross-infections between viruses and prokaryotes from three tropical sites of West Africa, with distinct salinities: a freshwater reservoir, a marine coastal station and a hypersaline lake. A cellular poison-based method (potassium cyanide) revealed that the addition of native viruses (regardless of the water type) consistently stimulated viral production. Conversely, in all incubations conducted with allochtonous (non-native) viruses, their overall production was not promoted, which suggests a lytic failure. Prokaryotic heterotrophic production increased in fresh and marine water supplemented with native viruses, but not in the hypersaline water. These results point to the role of the viral shunt in low-salinity environments, where the release of bioavailable lysis products might be of high nutritional value for the noninfected prokaryotes. In contrast, in hypersaline water where glycerol is a major carbon and energy source for the heterotrophic community, dissolved organic matter (DOM) of lytic origin may represent a less important DOM source for prokaryotes. Finally, our results suggest that cosmopolitan phages capable of moving between biomes are probably rare in aquatic habitats, supporting the common idea that most wild phages are relatively limited in their host range. |
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Authors:
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Yvan Bettarel; Anne Desnues; Emma Rochelle-Newall |
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Publication Detail:
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Type: Journal Article Date: 2010-08-23 |
Journal Detail:
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Title: FEMS microbiology letters Volume: 311 ISSN: 1574-6968 ISO Abbreviation: FEMS Microbiol. Lett. Publication Date: 2010 Oct |
Date Detail:
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Created Date: 2010-09-23 Completed Date: 2011-01-05 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 7705721 Medline TA: FEMS Microbiol Lett Country: England |
Other Details:
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Languages: eng Pagination: 113-8 Citation Subset: IM |
Copyright Information:
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Journal compilation © 2010 Federation of European Microbiological Societies. Published by Blackwell Publishing Ltd. No claim to original French government works. |
Affiliation:
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IRD, UMR 5119 ECOLAG, Montpellier, France. yvan.bettarel@ird.fr |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Bacteriophages
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physiology* Host Specificity* Prokaryotic Cells / virology* Salinity Water / analysis Water Microbiology* |
| Chemical | |
Reg. No./Substance:
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7732-18-5/Water |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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