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<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en">A novel clade of <italic>Prochlorococcus</italic> found in high nutrient low chlorophyll waters in the South and Equatorial Pacific Ocean</title><author><name sortKey="West, Nyree J" sort="West, Nyree J" uniqKey="West N" first="Nyree J" last="West">Nyree J. West</name><affiliation><nlm:aff id="aff1"><institution>UPMC Univ Paris 06, UMS 2348, UMR 7621, LOMIC, Observatoire Océanologique</institution>, Banyuls/mer,<country>France</country></nlm:aff></affiliation><affiliation><nlm:aff id="aff2"><institution>CNRS, UMS 2348, Observatoire Océanologique</institution>, Banyuls/mer,<country>France</country></nlm:aff></affiliation></author><author><name sortKey="Lebaron, Philippe" sort="Lebaron, Philippe" uniqKey="Lebaron P" first="Philippe" last="Lebaron">Philippe Lebaron</name><affiliation><nlm:aff id="aff1"><institution>UPMC Univ Paris 06, UMS 2348, UMR 7621, LOMIC, Observatoire Océanologique</institution>, Banyuls/mer,<country>France</country></nlm:aff></affiliation><affiliation><nlm:aff id="aff3"><institution>CNRS, UMR 7621, LOMIC, Observatoire Océanologique</institution>, Banyuls/mer,<country>France</country></nlm:aff></affiliation></author><author><name sortKey="Strutton, Pete G" sort="Strutton, Pete G" uniqKey="Strutton P" first="Pete G" last="Strutton">Pete G. Strutton</name><affiliation><nlm:aff id="aff4"><institution>Institute for Marine and Antarctic Studies, University of Tasmania</institution>, Hobart, Tasmania,<country>Australia</country></nlm:aff></affiliation></author><author><name sortKey="Suzuki, Marcelino T" sort="Suzuki, Marcelino T" uniqKey="Suzuki M" first="Marcelino T" last="Suzuki">Marcelino T. Suzuki</name><affiliation><nlm:aff id="aff1"><institution>UPMC Univ Paris 06, UMS 2348, UMR 7621, LOMIC, Observatoire Océanologique</institution>, Banyuls/mer,<country>France</country></nlm:aff></affiliation><affiliation><nlm:aff id="aff3"><institution>CNRS, UMR 7621, LOMIC, Observatoire Océanologique</institution>, Banyuls/mer,<country>France</country></nlm:aff></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">PMC</idno><idno type="pmid">21124492</idno><idno type="pmc">3131852</idno><idno type="url">http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3131852</idno><idno type="RBID">PMC:3131852</idno><idno type="doi">10.1038/ismej.2010.186</idno><date when="2010">2010</date><idno type="wicri:Area/Pmc/Corpus">000069</idno><idno type="wicri:explorRef" wicri:stream="Pmc" wicri:step="Corpus" wicri:corpus="PMC">000069</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en" level="a" type="main">A novel clade of <italic>Prochlorococcus</italic> found in high nutrient low chlorophyll waters in the South and Equatorial Pacific Ocean</title><author><name sortKey="West, Nyree J" sort="West, Nyree J" uniqKey="West N" first="Nyree J" last="West">Nyree J. West</name><affiliation><nlm:aff id="aff1"><institution>UPMC Univ Paris 06, UMS 2348, UMR 7621, LOMIC, Observatoire Océanologique</institution>, Banyuls/mer,<country>France</country></nlm:aff></affiliation><affiliation><nlm:aff id="aff2"><institution>CNRS, UMS 2348, Observatoire Océanologique</institution>, Banyuls/mer,<country>France</country></nlm:aff></affiliation></author><author><name sortKey="Lebaron, Philippe" sort="Lebaron, Philippe" uniqKey="Lebaron P" first="Philippe" last="Lebaron">Philippe Lebaron</name><affiliation><nlm:aff id="aff1"><institution>UPMC Univ Paris 06, UMS 2348, UMR 7621, LOMIC, Observatoire Océanologique</institution>, Banyuls/mer,<country>France</country></nlm:aff></affiliation><affiliation><nlm:aff id="aff3"><institution>CNRS, UMR 7621, LOMIC, Observatoire Océanologique</institution>, Banyuls/mer,<country>France</country></nlm:aff></affiliation></author><author><name sortKey="Strutton, Pete G" sort="Strutton, Pete G" uniqKey="Strutton P" first="Pete G" last="Strutton">Pete G. Strutton</name><affiliation><nlm:aff id="aff4"><institution>Institute for Marine and Antarctic Studies, University of Tasmania</institution>, Hobart, Tasmania,<country>Australia</country></nlm:aff></affiliation></author><author><name sortKey="Suzuki, Marcelino T" sort="Suzuki, Marcelino T" uniqKey="Suzuki M" first="Marcelino T" last="Suzuki">Marcelino T. Suzuki</name><affiliation><nlm:aff id="aff1"><institution>UPMC Univ Paris 06, UMS 2348, UMR 7621, LOMIC, Observatoire Océanologique</institution>, Banyuls/mer,<country>France</country></nlm:aff></affiliation><affiliation><nlm:aff id="aff3"><institution>CNRS, UMR 7621, LOMIC, Observatoire Océanologique</institution>, Banyuls/mer,<country>France</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>A novel high-light (HL)-adapted <italic>Prochlorococcus</italic> clade was discovered in high nutrient and low chlorophyll (HNLC) waters in the South Pacific Ocean by phylogenetic analyses of 16S ribosomal RNA (rRNA) and 16S–23S internal transcribed spacer (ITS) sequences. This clade, named HNLC fell within the HL-adapted <italic>Prochlorococcus</italic> clade with sequences above 99% similarity to one another, and was divided into two subclades, HNLC1 and HNLC2. The distribution of the whole HNLC clade in a northwest to southeast transect in the South Pacific (HNLC-to-gyre) and two 8°N to 8°S transects in the Equatorial Pacific was determined by quantitative PCR using specific primers targeting ITS regions. HNLC was the dominant HL <italic>Prochlorococcus</italic> clade (2–9% of bacterial 16S rRNA genes) at the three westernmost stations in the South Pacific but decreased to less than 0.1% at the other stations being replaced by the eMIT9312 ecotype in the hyperoligotrophic gyre. The highest contributions of HNLC <italic>Prochlorococcus</italic> in both Equatorial Pacific transects along the latitudinal lines of 170°W and 155°W were observed at the southernmost stations, reaching 16 and 6% of bacterial 16S rRNA genes, respectively, whereas eMIT9312 dominated near the Equator. Spearman Rank Order correlation analysis indicated that although both the HNLC clade and eMIT9312 were correlated with temperature, they showed different correlations with regard to nutrients. HNLC only showed significant correlations to ammonium uptake and regeneration rates, whereas eMIT9312 was negatively correlated with inorganic nutrients.</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">21124492</article-id><article-id pub-id-type="pmc">3131852</article-id><article-id pub-id-type="pii">ismej2010186</article-id><article-id pub-id-type="doi">10.1038/ismej.2010.186</article-id><article-categories><subj-group subj-group-type="heading"><subject>Original Article</subject></subj-group></article-categories><title-group><article-title>A novel clade of <italic>Prochlorococcus</italic> found in high nutrient low chlorophyll waters in the South and Equatorial Pacific Ocean</article-title><alt-title alt-title-type="running">Novel <italic>Prochlorococcus</italic> clade in a HNLC region</alt-title></title-group><contrib-group><contrib contrib-type="author"><name><surname>West</surname><given-names>Nyree J</given-names></name><xref ref-type="aff" rid="aff1">1</xref><xref ref-type="aff" rid="aff2">2</xref><xref ref-type="corresp" rid="caf1">*</xref></contrib><contrib contrib-type="author"><name><surname>Lebaron</surname><given-names>Philippe</given-names></name><xref ref-type="aff" rid="aff1">1</xref><xref ref-type="aff" rid="aff3">3</xref></contrib><contrib contrib-type="author"><name><surname>Strutton</surname><given-names>Pete G</given-names></name><xref ref-type="aff" rid="aff4">4</xref></contrib><contrib contrib-type="author"><name><surname>Suzuki</surname><given-names>Marcelino T</given-names></name><xref ref-type="aff" rid="aff1">1</xref><xref ref-type="aff" rid="aff3">3</xref></contrib><aff id="aff1"><label>1</label><institution>UPMC Univ Paris 06, UMS 2348, UMR 7621, LOMIC, Observatoire Océanologique</institution>, Banyuls/mer,<country>France</country></aff><aff id="aff2"><label>2</label><institution>CNRS, UMS 2348, Observatoire Océanologique</institution>, Banyuls/mer,<country>France</country></aff><aff id="aff3"><label>3</label><institution>CNRS, UMR 7621, LOMIC, Observatoire Océanologique</institution>, Banyuls/mer,<country>France</country></aff><aff id="aff4"><label>4</label><institution>Institute for Marine and Antarctic Studies, University of Tasmania</institution>, Hobart, Tasmania,<country>Australia</country></aff></contrib-group><author-notes><corresp id="caf1"><label>*</label><institution>CNRS, UMS 2348, Observatoire Océanologique de Banyuls s/mer</institution>, Avenue du Fontaule, Banyuls s/mer F-66650, <country>France</country>. E-mail: <email>nyree.west@obs-banyuls.fr</email></corresp></author-notes><pub-date pub-type="ppub"><month>06</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>6</issue><fpage>933</fpage><lpage>944</lpage><history><date date-type="received"><day>20</day><month>09</month><year>2010</year></date><date date-type="rev-recd"><day>28</day><month>10</month><year>2010</year></date><date date-type="accepted"><day>31</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>A novel high-light (HL)-adapted <italic>Prochlorococcus</italic> clade was discovered in high nutrient and low chlorophyll (HNLC) waters in the South Pacific Ocean by phylogenetic analyses of 16S ribosomal RNA (rRNA) and 16S–23S internal transcribed spacer (ITS) sequences. This clade, named HNLC fell within the HL-adapted <italic>Prochlorococcus</italic> clade with sequences above 99% similarity to one another, and was divided into two subclades, HNLC1 and HNLC2. The distribution of the whole HNLC clade in a northwest to southeast transect in the South Pacific (HNLC-to-gyre) and two 8°N to 8°S transects in the Equatorial Pacific was determined by quantitative PCR using specific primers targeting ITS regions. HNLC was the dominant HL <italic>Prochlorococcus</italic> clade (2–9% of bacterial 16S rRNA genes) at the three westernmost stations in the South Pacific but decreased to less than 0.1% at the other stations being replaced by the eMIT9312 ecotype in the hyperoligotrophic gyre. The highest contributions of HNLC <italic>Prochlorococcus</italic> in both Equatorial Pacific transects along the latitudinal lines of 170°W and 155°W were observed at the southernmost stations, reaching 16 and 6% of bacterial 16S rRNA genes, respectively, whereas eMIT9312 dominated near the Equator. Spearman Rank Order correlation analysis indicated that although both the HNLC clade and eMIT9312 were correlated with temperature, they showed different correlations with regard to nutrients. HNLC only showed significant correlations to ammonium uptake and regeneration rates, whereas eMIT9312 was negatively correlated with inorganic nutrients.</p></abstract><kwd-group><kwd>16S rRNA</kwd><kwd>Equatorial Pacific</kwd><kwd>HNLC</kwd><kwd>ITS</kwd><kwd><italic>Prochlorococcus</italic></kwd><kwd>qPCR</kwd></kwd-group></article-meta></front></pmc></record>Pour manipuler ce document sous Unix (Dilib)
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