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Novel lineages of Prochlorococcus thrive within the oxygen minimum zone of the eastern tropical south Pacific
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Lavin, Paris, Gonzalez, Bernardo, Francisco Santibanez, J., Scanlan, David J. and Ulloa, Osvaldo (2010) Novel lineages of Prochlorococcus thrive within the oxygen minimum zone of the eastern tropical south Pacific. Environmental Microbiology Reports, Vol.2 (No.6). pp. 728-738. doi:10.1111/j.1758-2229.2010.00167.x ISSN 1758-2229.
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Official URL: http://dx.doi.org/10.1111/j.1758-2229.2010.00167.x
Abstract
The eastern tropical Pacific Ocean holds two of the main oceanic oxygen minimum zones of the global ocean. The presence of an oxygen-depleted layer at intermediate depths, which also impinges on the seafloor and in some cases the euphotic zone, plays a significant role in structuring both pelagic and benthic communities, and also in the vertical partitioning of microbial assemblages. Here, we assessed the genetic diversity and distribution of natural populations of the cyanobacteria Prochlorococcus and Synechococcus within oxic and suboxic waters of the eastern tropical Pacific using cloning and sequencing, and terminal restriction fragment length polymorphism (T-RFLP) analyses applied to the 16S-23S rRNA internal transcribed spacer region. With the T-RFLP approach we could discriminate 19 cyanobacterial clades, of which 18 were present in the study region. Synechococcus was more abundant in the surface oxic waters of the eastern South Pacific, while Prochlorococcus dominated the subsurface low-oxygen waters. Two of the dominant clades in the oxygen-deficient waters belong to novel and yet uncultivated lineages of low-light adapted Prochlorococcus.
| Item Type: | Journal Article | ||||
|---|---|---|---|---|---|
| Subjects: | G Geography. Anthropology. Recreation > GE Environmental Sciences Q Science > QR Microbiology |
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| Divisions: | Faculty of Science, Engineering and Medicine > Science > Life Sciences (2010- ) > Biological Sciences ( -2010) | ||||
| Journal or Publication Title: | Environmental Microbiology Reports | ||||
| Publisher: | Wiley-Blackwell Publishing Ltd. | ||||
| ISSN: | 1758-2229 | ||||
| Official Date: | December 2010 | ||||
| Dates: |
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| Volume: | Vol.2 | ||||
| Number: | No.6 | ||||
| Number of Pages: | 11 | ||||
| Page Range: | pp. 728-738 | ||||
| DOI: | 10.1111/j.1758-2229.2010.00167.x | ||||
| Status: | Peer Reviewed | ||||
| Publication Status: | Published | ||||
| Access rights to Published version: | Restricted or Subscription Access | ||||
| Funder: | Agouron Institute, Millennium Scientific Initiative (MSI), Chilean National Commission for Scientific and Technological Research (CONICYT), Natural Environment Research Council | ||||
| Grant number: | AIMME1.05, P/04-007-F, 1501-0007/COPAS, 1501-0001/CASEB |
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