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Distinct Oceanic Mi...
Distinct Oceanic Microbiomes From Viruses to Protists Located Near the Antarctic Circumpolar Current
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- Flaviani, Flavia (author)
- Univ Cape Town, Biopharming Res Unit, Dept Mol & Cell Biol, Cape Town, South Africa;Marine Biol Assoc UK, Citadel Hill, Plymouth, Devon, England
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- Schroeder, Declan C. (author)
- Univ Reading, Sch Biol Sci, Reading, Berks, England;Univ Minnesota Twin Cities, Coll Vet Med, Minneapolis, MN 55455 USA;Marine Biol Assoc UK, Citadel Hill, Plymouth, Devon, England
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- Lebret, Karen (author)
- Uppsala universitet,Limnologi,Marine Biol Assoc UK, Citadel Hill, Plymouth, Devon, England
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- Balestreri, Cecilia (author)
- Marine Biol Assoc UK, Citadel Hill, Plymouth, Devon, England
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- Highfield, Andrea C. (author)
- Marine Biol Assoc UK, Citadel Hill, Plymouth, Devon, England
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- Schroeder, Joanna L. (author)
- Marine Biol Assoc UK, Citadel Hill, Plymouth, Devon, England
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- Thorpe, Sally E. (author)
- NERC, British Antarctic Survey, Cambridge, England
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- Moore, Karen (author)
- Univ Exeter, Exeter Sequencing Serv, Biosci, Exeter, Devon, England
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- Pasckiewicz, Konrad (author)
- Univ Exeter, Exeter Sequencing Serv, Biosci, Exeter, Devon, England
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- Pfaff, Maya C. (author)
- Oceans & Coasts, Dept Environm Affairs, Cape Town, South Africa
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- Rybicki, Edward P. (author)
- Univ Cape Town, Biopharming Res Unit, Dept Mol & Cell Biol, Cape Town, South Africa
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(creator_code:org_t)
- 2018-07-17
- 2018
- English.
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In: Frontiers in Microbiology. - : FRONTIERS MEDIA SA. - 1664-302X. ; 9
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Abstract
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- Microbes occupy diverse ecological niches and only through recent advances in next generation sequencing technologies have the true microbial diversity been revealed. Furthermore, lack of perceivable marine barriers to genetic dispersal (i.e., mountains or islands) has allowed the speculation that organisms that can be easily transported by currents and therefore proliferate everywhere. That said, ocean currents are now commonly being recognized as barriers for microbial dispersal. Here we analyzed samples collected from a total of six stations, four located in the Indian Ocean, and two in the Southern Ocean. Amplicon sequencing was used to characterize both prokaryotic and eukaryotic plankton communities, while shotgun sequencing was used for the combined environmental DNA (eDNA), microbial eDNA (meDNA), and viral fractions. We found that Cyanobacteria dominated the prokaryotic component in the South-West Indian Ocean, while gamma-Proteobacteria dominated the South-East Indian Ocean. A combination of gamma- and alpha-Proteobacteria dominated the Southern Ocean. Alveolates dominated almost exclusively the eukaryotic component, with variation in the ratio of Protoalveolata and Dinoflagellata depending on station. However, an increase in haptophyte relative abundance was observed in the Southern Ocean. Similarly, the viral fraction was dominated by members of the order Caudovirales across all stations; however, a higher presence of nucleocytoplasmic large DNA viruses (mainly chloroviruses and mimiviruses) was observed in the Southern Ocean. To our knowledge, this is the first that a statistical difference in the microbiome (from viruses to protists) between the subtropical Indian and Southern Oceans. We also show that not all phylotypes can be found everywhere, and that meDNA is not a suitable resource for monitoring aquatic microbial diversity.
Subject headings
- NATURVETENSKAP -- Biologi -- Mikrobiologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Microbiology (hsv//eng)
Keyword
- Antarctic Polar Front
- marine microbes
- eDNA
- meDNA
- viruses
- microbiome
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Flaviani, Flavia
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Schroeder, Decla ...
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Lebret, Karen
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Balestreri, Ceci ...
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Highfield, Andre ...
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Schroeder, Joann ...
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show more...
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Thorpe, Sally E.
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Moore, Karen
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Pasckiewicz, Kon ...
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Pfaff, Maya C.
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Rybicki, Edward ...
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- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Biological Scien ...
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and Microbiology
- Articles in the publication
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Frontiers in Mic ...
- By the university
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Uppsala University