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<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en">An integrative study of a meromictic lake ecosystem in Antarctica</title><author><name sortKey="Lauro, Federico M" sort="Lauro, Federico M" uniqKey="Lauro F" first="Federico M" last="Lauro">Federico M. Lauro</name><affiliation><nlm:aff id="aff1"><institution>School of Biotechnology and Biomolecular Sciences, The University of New South Wales</institution>, Sydney, New South Wales,<country>Australia</country></nlm:aff></affiliation></author><author><name sortKey="Demaere, Matthew Z" sort="Demaere, Matthew Z" uniqKey="Demaere M" first="Matthew Z" last="Demaere">Matthew Z. Demaere</name><affiliation><nlm:aff id="aff1"><institution>School of Biotechnology and Biomolecular Sciences, The University of New South Wales</institution>, Sydney, New South Wales,<country>Australia</country></nlm:aff></affiliation></author><author><name sortKey="Yau, Sheree" sort="Yau, Sheree" uniqKey="Yau S" first="Sheree" last="Yau">Sheree Yau</name><affiliation><nlm:aff id="aff1"><institution>School of Biotechnology and Biomolecular Sciences, The University of New South Wales</institution>, Sydney, New South Wales,<country>Australia</country></nlm:aff></affiliation></author><author><name sortKey="Brown, Mark V" sort="Brown, Mark V" uniqKey="Brown M" first="Mark V" last="Brown">Mark V. Brown</name><affiliation><nlm:aff id="aff1"><institution>School of Biotechnology and Biomolecular Sciences, The University of New South Wales</institution>, Sydney, New South Wales,<country>Australia</country></nlm:aff></affiliation></author><author><name sortKey="Ng, Charmaine" sort="Ng, Charmaine" uniqKey="Ng C" first="Charmaine" last="Ng">Charmaine Ng</name><affiliation><nlm:aff id="aff1"><institution>School of Biotechnology and Biomolecular Sciences, The University of New South Wales</institution>, Sydney, New South Wales,<country>Australia</country></nlm:aff></affiliation></author><author><name sortKey="Wilkins, David" sort="Wilkins, David" uniqKey="Wilkins D" first="David" last="Wilkins">David Wilkins</name><affiliation><nlm:aff id="aff1"><institution>School of Biotechnology and Biomolecular Sciences, The University of New South Wales</institution>, Sydney, New South Wales,<country>Australia</country></nlm:aff></affiliation></author><author><name sortKey="Raftery, Mark J" sort="Raftery, Mark J" uniqKey="Raftery M" first="Mark J" last="Raftery">Mark J. Raftery</name><affiliation><nlm:aff id="aff2"><institution>Bioanalytical Mass Spectrometry Facility, The University of New South Wales</institution>, Sydney, New South Wales,<country>Australia</country></nlm:aff></affiliation></author><author><name sortKey="Gibson, John Ae" sort="Gibson, John Ae" uniqKey="Gibson J" first="John Ae" last="Gibson">John Ae Gibson</name><affiliation><nlm:aff id="aff3"><institution>Marine Research Laboratories, Tasmanian Aquaculture and Fisheries Institute, University of Tasmania</institution>, Hobart, Tasmania,<country>Australia</country></nlm:aff></affiliation></author><author><name sortKey="Andrews Pfannkoch, Cynthia" sort="Andrews Pfannkoch, Cynthia" uniqKey="Andrews Pfannkoch C" first="Cynthia" last="Andrews-Pfannkoch">Cynthia Andrews-Pfannkoch</name><affiliation><nlm:aff id="aff4"><institution>J Craig Venter Institute</institution>, Rockville, MD,<country>USA</country></nlm:aff></affiliation></author><author><name sortKey="Lewis, Matthew" sort="Lewis, Matthew" uniqKey="Lewis M" first="Matthew" last="Lewis">Matthew Lewis</name><affiliation><nlm:aff id="aff4"><institution>J Craig Venter Institute</institution>, Rockville, MD,<country>USA</country></nlm:aff></affiliation></author><author><name sortKey="Hoffman, Jeffrey M" sort="Hoffman, Jeffrey M" uniqKey="Hoffman J" first="Jeffrey M" last="Hoffman">Jeffrey M. Hoffman</name><affiliation><nlm:aff id="aff4"><institution>J Craig Venter Institute</institution>, Rockville, MD,<country>USA</country></nlm:aff></affiliation></author><author><name sortKey="Thomas, Torsten" sort="Thomas, Torsten" uniqKey="Thomas T" first="Torsten" last="Thomas">Torsten Thomas</name><affiliation><nlm:aff id="aff1"><institution>School of Biotechnology and Biomolecular Sciences, The University of New South Wales</institution>, Sydney, New South Wales,<country>Australia</country></nlm:aff></affiliation><affiliation><nlm:aff id="aff5"><institution>Centre for Marine Bio-Innovation, The University of New South Wales</institution>, Sydney, New South Wales,<country>Australia</country></nlm:aff></affiliation></author><author><name sortKey="Cavicchioli, Ricardo" sort="Cavicchioli, Ricardo" uniqKey="Cavicchioli R" first="Ricardo" last="Cavicchioli">Ricardo Cavicchioli</name><affiliation><nlm:aff id="aff1"><institution>School of Biotechnology and Biomolecular Sciences, The University of New South Wales</institution>, Sydney, New South Wales,<country>Australia</country></nlm:aff></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">PMC</idno><idno type="pmid">21124488</idno><idno type="pmc">3105772</idno><idno type="url">http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3105772</idno><idno type="RBID">PMC:3105772</idno><idno type="doi">10.1038/ismej.2010.185</idno><date when="2010">2010</date><idno type="wicri:Area/Pmc/Corpus">000021</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en" level="a" type="main">An integrative study of a meromictic lake ecosystem in Antarctica</title><author><name sortKey="Lauro, Federico M" sort="Lauro, Federico M" uniqKey="Lauro F" first="Federico M" last="Lauro">Federico M. Lauro</name><affiliation><nlm:aff id="aff1"><institution>School of Biotechnology and Biomolecular Sciences, The University of New South Wales</institution>, Sydney, New South Wales,<country>Australia</country></nlm:aff></affiliation></author><author><name sortKey="Demaere, Matthew Z" sort="Demaere, Matthew Z" uniqKey="Demaere M" first="Matthew Z" last="Demaere">Matthew Z. Demaere</name><affiliation><nlm:aff id="aff1"><institution>School of Biotechnology and Biomolecular Sciences, The University of New South Wales</institution>, Sydney, New South Wales,<country>Australia</country></nlm:aff></affiliation></author><author><name sortKey="Yau, Sheree" sort="Yau, Sheree" uniqKey="Yau S" first="Sheree" last="Yau">Sheree Yau</name><affiliation><nlm:aff id="aff1"><institution>School of Biotechnology and Biomolecular Sciences, The University of New South Wales</institution>, Sydney, New South Wales,<country>Australia</country></nlm:aff></affiliation></author><author><name sortKey="Brown, Mark V" sort="Brown, Mark V" uniqKey="Brown M" first="Mark V" last="Brown">Mark V. Brown</name><affiliation><nlm:aff id="aff1"><institution>School of Biotechnology and Biomolecular Sciences, The University of New South Wales</institution>, Sydney, New South Wales,<country>Australia</country></nlm:aff></affiliation></author><author><name sortKey="Ng, Charmaine" sort="Ng, Charmaine" uniqKey="Ng C" first="Charmaine" last="Ng">Charmaine Ng</name><affiliation><nlm:aff id="aff1"><institution>School of Biotechnology and Biomolecular Sciences, The University of New South Wales</institution>, Sydney, New South Wales,<country>Australia</country></nlm:aff></affiliation></author><author><name sortKey="Wilkins, David" sort="Wilkins, David" uniqKey="Wilkins D" first="David" last="Wilkins">David Wilkins</name><affiliation><nlm:aff id="aff1"><institution>School of Biotechnology and Biomolecular Sciences, The University of New South Wales</institution>, Sydney, New South Wales,<country>Australia</country></nlm:aff></affiliation></author><author><name sortKey="Raftery, Mark J" sort="Raftery, Mark J" uniqKey="Raftery M" first="Mark J" last="Raftery">Mark J. Raftery</name><affiliation><nlm:aff id="aff2"><institution>Bioanalytical Mass Spectrometry Facility, The University of New South Wales</institution>, Sydney, New South Wales,<country>Australia</country></nlm:aff></affiliation></author><author><name sortKey="Gibson, John Ae" sort="Gibson, John Ae" uniqKey="Gibson J" first="John Ae" last="Gibson">John Ae Gibson</name><affiliation><nlm:aff id="aff3"><institution>Marine Research Laboratories, Tasmanian Aquaculture and Fisheries Institute, University of Tasmania</institution>, Hobart, Tasmania,<country>Australia</country></nlm:aff></affiliation></author><author><name sortKey="Andrews Pfannkoch, Cynthia" sort="Andrews Pfannkoch, Cynthia" uniqKey="Andrews Pfannkoch C" first="Cynthia" last="Andrews-Pfannkoch">Cynthia Andrews-Pfannkoch</name><affiliation><nlm:aff id="aff4"><institution>J Craig Venter Institute</institution>, Rockville, MD,<country>USA</country></nlm:aff></affiliation></author><author><name sortKey="Lewis, Matthew" sort="Lewis, Matthew" uniqKey="Lewis M" first="Matthew" last="Lewis">Matthew Lewis</name><affiliation><nlm:aff id="aff4"><institution>J Craig Venter Institute</institution>, Rockville, MD,<country>USA</country></nlm:aff></affiliation></author><author><name sortKey="Hoffman, Jeffrey M" sort="Hoffman, Jeffrey M" uniqKey="Hoffman J" first="Jeffrey M" last="Hoffman">Jeffrey M. Hoffman</name><affiliation><nlm:aff id="aff4"><institution>J Craig Venter Institute</institution>, Rockville, MD,<country>USA</country></nlm:aff></affiliation></author><author><name sortKey="Thomas, Torsten" sort="Thomas, Torsten" uniqKey="Thomas T" first="Torsten" last="Thomas">Torsten Thomas</name><affiliation><nlm:aff id="aff1"><institution>School of Biotechnology and Biomolecular Sciences, The University of New South Wales</institution>, Sydney, New South Wales,<country>Australia</country></nlm:aff></affiliation><affiliation><nlm:aff id="aff5"><institution>Centre for Marine Bio-Innovation, The University of New South Wales</institution>, Sydney, New South Wales,<country>Australia</country></nlm:aff></affiliation></author><author><name sortKey="Cavicchioli, Ricardo" sort="Cavicchioli, Ricardo" uniqKey="Cavicchioli R" first="Ricardo" last="Cavicchioli">Ricardo Cavicchioli</name><affiliation><nlm:aff id="aff1"><institution>School of Biotechnology and Biomolecular Sciences, The University of New South Wales</institution>, Sydney, New South Wales,<country>Australia</country></nlm:aff></affiliation></author></analytic><series><title level="j">The ISME journal</title><idno type="ISSN">1751-7362</idno><idno type="eISSN">1751-7370</idno><imprint><date when="2010">2010</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en"><p>In nature, the complexity and structure of microbial communities varies widely, ranging from a few species to thousands of species, and from highly structured to highly unstructured communities. Here, we describe the identity and functional capacity of microbial populations within distinct layers of a pristine, marine-derived, meromictic (stratified) lake (Ace Lake) in Antarctica. Nine million open reading frames were analyzed, representing microbial samples taken from six depths of the lake size fractionated on sequential 3.0, 0.8 and 0.1 μm filters, and including metaproteome data from matching 0.1 μm filters. We determine how the interactions of members of this highly structured and moderately complex community define the biogeochemical fluxes throughout the entire lake. Our view is that the health of this delicate ecosystem is dictated by the effects of the polar light cycle on the dominant role of green sulfur bacteria in primary production and nutrient cycling, and the influence of viruses/phage and phage resistance on the cooperation between members of the microbial community right throughout the lake. To test our assertions, and develop a framework applicable to other microbially driven ecosystems, we developed a mathematical model that describes how cooperation within a microbial system is impacted by periodic fluctuations in environmental parameters on key populations of microorganisms. Our study reveals a mutualistic structure within the microbial community throughout the lake that has arisen as the result of mechanistic interactions between the physico-chemical parameters and the selection of individual members of the community. By exhaustively describing and modelling interactions in Ace Lake, we have developed an approach that may be applicable to learning how environmental perturbations affect the microbial dynamics in more complex aquatic systems.</p></div></front></TEI><pmc article-type="research-article"><pmc-comment>The publisher of this article does not allow downloading of the full text in XML form.</pmc-comment>
<front><journal-meta><journal-id journal-id-type="nlm-ta">ISME J</journal-id><journal-title-group><journal-title>The ISME journal</journal-title></journal-title-group><issn pub-type="ppub">1751-7362</issn><issn pub-type="epub">1751-7370</issn><publisher><publisher-name>Nature Publishing Group</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="pmid">21124488</article-id><article-id pub-id-type="pmc">3105772</article-id><article-id pub-id-type="pii">ismej2010185</article-id><article-id pub-id-type="doi">10.1038/ismej.2010.185</article-id><article-categories><subj-group subj-group-type="heading"><subject>Original Article</subject></subj-group></article-categories><title-group><article-title>An integrative study of a meromictic lake ecosystem in Antarctica</article-title><alt-title alt-title-type="running">Metagenomics of Ace Lake</alt-title></title-group><contrib-group><contrib contrib-type="author"><name><surname>Lauro</surname><given-names>Federico M</given-names></name><xref ref-type="aff" rid="aff1">1</xref></contrib><contrib contrib-type="author"><name><surname>DeMaere</surname><given-names>Matthew Z</given-names></name><xref ref-type="aff" rid="aff1">1</xref></contrib><contrib contrib-type="author"><name><surname>Yau</surname><given-names>Sheree</given-names></name><xref ref-type="aff" rid="aff1">1</xref></contrib><contrib contrib-type="author"><name><surname>Brown</surname><given-names>Mark V</given-names></name><xref ref-type="aff" rid="aff1">1</xref></contrib><contrib contrib-type="author"><name><surname>Ng</surname><given-names>Charmaine</given-names></name><xref ref-type="aff" rid="aff1">1</xref></contrib><contrib contrib-type="author"><name><surname>Wilkins</surname><given-names>David</given-names></name><xref ref-type="aff" rid="aff1">1</xref></contrib><contrib contrib-type="author"><name><surname>Raftery</surname><given-names>Mark J</given-names></name><xref ref-type="aff" rid="aff2">2</xref></contrib><contrib contrib-type="author"><name><surname>Gibson</surname><given-names>John AE</given-names></name><xref ref-type="aff" rid="aff3">3</xref></contrib><contrib contrib-type="author"><name><surname>Andrews-Pfannkoch</surname><given-names>Cynthia</given-names></name><xref ref-type="aff" rid="aff4">4</xref></contrib><contrib contrib-type="author"><name><surname>Lewis</surname><given-names>Matthew</given-names></name><xref ref-type="aff" rid="aff4">4</xref></contrib><contrib contrib-type="author"><name><surname>Hoffman</surname><given-names>Jeffrey M</given-names></name><xref ref-type="aff" rid="aff4">4</xref></contrib><contrib contrib-type="author"><name><surname>Thomas</surname><given-names>Torsten</given-names></name><xref ref-type="aff" rid="aff1">1</xref><xref ref-type="aff" rid="aff5">5</xref></contrib><contrib contrib-type="author"><name><surname>Cavicchioli</surname><given-names>Ricardo</given-names></name><xref ref-type="aff" rid="aff1">1</xref><xref ref-type="corresp" rid="caf1">*</xref></contrib><aff id="aff1"><label>1</label><institution>School of Biotechnology and Biomolecular Sciences, The University of New South Wales</institution>, Sydney, New South Wales,<country>Australia</country></aff><aff id="aff2"><label>2</label><institution>Bioanalytical Mass Spectrometry Facility, The University of New South Wales</institution>, Sydney, New South Wales,<country>Australia</country></aff><aff id="aff3"><label>3</label><institution>Marine Research Laboratories, Tasmanian Aquaculture and Fisheries Institute, University of Tasmania</institution>, Hobart, Tasmania,<country>Australia</country></aff><aff id="aff4"><label>4</label><institution>J Craig Venter Institute</institution>, Rockville, MD,<country>USA</country></aff><aff id="aff5"><label>5</label><institution>Centre for Marine Bio-Innovation, The University of New South Wales</institution>, Sydney, New South Wales,<country>Australia</country></aff></contrib-group><author-notes><corresp id="caf1"><label>*</label><institution>School of Biotechnology and Biomolecular Sciences, The University of New South Wales</institution>, Sydney, New South Wales 2052, <country>Australia</country>. E-mail: <email>r.cavicchioli@unsw.edu.au</email></corresp></author-notes><pub-date pub-type="ppub"><month>05</month><year>2011</year></pub-date><pub-date pub-type="epub"><day>02</day><month>12</month><year>2010</year></pub-date><volume>5</volume><issue>5</issue><fpage>879</fpage><lpage>895</lpage><history><date date-type="received"><day>26</day><month>08</month><year>2010</year></date><date date-type="rev-recd"><day>27</day><month>10</month><year>2010</year></date><date date-type="accepted"><day>30</day><month>10</month><year>2010</year></date></history><permissions><copyright-statement>Copyright © 2011 International Society for Microbial Ecology</copyright-statement><copyright-year>2011</copyright-year><copyright-holder>International Society for Microbial Ecology</copyright-holder></permissions><abstract><p>In nature, the complexity and structure of microbial communities varies widely, ranging from a few species to thousands of species, and from highly structured to highly unstructured communities. Here, we describe the identity and functional capacity of microbial populations within distinct layers of a pristine, marine-derived, meromictic (stratified) lake (Ace Lake) in Antarctica. Nine million open reading frames were analyzed, representing microbial samples taken from six depths of the lake size fractionated on sequential 3.0, 0.8 and 0.1 μm filters, and including metaproteome data from matching 0.1 μm filters. We determine how the interactions of members of this highly structured and moderately complex community define the biogeochemical fluxes throughout the entire lake. Our view is that the health of this delicate ecosystem is dictated by the effects of the polar light cycle on the dominant role of green sulfur bacteria in primary production and nutrient cycling, and the influence of viruses/phage and phage resistance on the cooperation between members of the microbial community right throughout the lake. To test our assertions, and develop a framework applicable to other microbially driven ecosystems, we developed a mathematical model that describes how cooperation within a microbial system is impacted by periodic fluctuations in environmental parameters on key populations of microorganisms. Our study reveals a mutualistic structure within the microbial community throughout the lake that has arisen as the result of mechanistic interactions between the physico-chemical parameters and the selection of individual members of the community. By exhaustively describing and modelling interactions in Ace Lake, we have developed an approach that may be applicable to learning how environmental perturbations affect the microbial dynamics in more complex aquatic systems.</p></abstract><kwd-group><kwd>metagenomics/metaproteomics</kwd><kwd>Antarctic meromictic lake</kwd><kwd>green sulfur bacteria</kwd><kwd>virus/phage</kwd><kwd>nutrient cycle</kwd><kwd>Lotka–Volterra predator–prey model</kwd></kwd-group></article-meta></front></pmc></record>Pour manipuler ce document sous Unix (Dilib)
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