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Genetic diversity of marine Synechococcus and co-occurring cyanophage communities : evidence for viral control of phytoplankton
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Somerfield, Paul J., Muhling, Martin, Fuller, Nicholas J., Millard, Andrew D., Dominique, Marie, Wilson, W. H., Scanlan, David J., Post, Anton F., Joint, Ian and Mann, Nicholas H. (2005) Genetic diversity of marine Synechococcus and co-occurring cyanophage communities : evidence for viral control of phytoplankton. Environmental Microbiology, Volume 7 (Number 4). pp. 499-508. doi:10.1111/j.1462-2920.2005.00713.x ISSN 1462-2912.
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Official URL: http://dx.doi.org/10.1111/j.1462-2920.2005.00713.x
Abstract
Unicellular cyanobacteria of the genus Synechococcus are a major component of the picophytoplankton and make a substantial contribution to primary productivity in the oceans. Here we provide evidence that supports the hypothesis that virus infection can play an important role in determining the success of different Synechococcus genotypes and hence of seasonal succession. In a study of the oligotrophic Gulf of Aqaba, Red Sea, we show a succession of Synechococcus genotypes over an annual cycle. There were large changes in the genetic diversity of Synechococcus, as determined by restriction fragment length polymorphism analysis of a 403- bp rpoC1 gene fragment, which was reduced to one dominant genotype in July. The abundance of co-occurring cyanophage capable of infecting marine Synechococcus was determined by plaque assays and their genetic diversity was determined by denaturing gradient gel electrophoresis analysis of a 118-bp g20 gene fragment. The results indicate that both abundance and genetic diversity of cyanophage covaried with that of Synechococcus. Multivariate statistical analyses show a significant relationship between cyanophage assemblage structure and that of Synechococcus. These observations are consistent with cyanophage infection being a major controlling factor in picophytoplankton succession.
| Item Type: | Journal Article | ||||
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| Subjects: | Q Science > QH Natural history > QH426 Genetics Q Science > QR Microbiology |
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| Divisions: | Faculty of Science, Engineering and Medicine > Science > Life Sciences (2010- ) > Biological Sciences ( -2010) Faculty of Science, Engineering and Medicine > Science > Life Sciences (2010- ) Faculty of Science, Engineering and Medicine > Medicine > Warwick Medical School > Biomedical Sciences > Microbiology & Infection Faculty of Science, Engineering and Medicine > Medicine > Warwick Medical School |
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| Library of Congress Subject Headings (LCSH): | Cyanobacteria -- Genetic aspects, Bacteriophages -- Genetic aspects, Microbial genomes, Phytoplankton, Variation (Biology) | ||||
| Journal or Publication Title: | Environmental Microbiology | ||||
| Publisher: | Blackwell | ||||
| ISSN: | 1462-2912 | ||||
| Official Date: | April 2005 | ||||
| Dates: |
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| Volume: | Volume 7 | ||||
| Number: | Number 4 | ||||
| Number of Pages: | 10 | ||||
| Page Range: | pp. 499-508 | ||||
| DOI: | 10.1111/j.1462-2920.2005.00713.x | ||||
| Status: | Peer Reviewed | ||||
| Publication Status: | Published | ||||
| Access rights to Published version: | Restricted or Subscription Access | ||||
| Funder: | Natural Environment Research Council (Great Britain) (NERC), U.S.-Israel Binational Scientific Foundation, Israel Science Foundation (ISF) | ||||
| Grant number: | 1999-194 (USIBSF); 525/98 (ISF) |
Data sourced from Thomson Reuters' Web of Knowledge
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