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<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en">Unveiling microbial activities along the halocline of Thetis, a deep-sea hypersaline anoxic basin</title><author><name sortKey="Pachiadaki, Maria G" sort="Pachiadaki, Maria G" uniqKey="Pachiadaki M" first="Maria G" last="Pachiadaki">Maria G. Pachiadaki</name><affiliation><nlm:aff id="aff1"><institution>Woods Hole Oceanographic Institution</institution>, Woods Hole, MA,<country>USA</country></nlm:aff></affiliation></author><author><name sortKey="Yakimov, Michail M" sort="Yakimov, Michail M" uniqKey="Yakimov M" first="Michail M" last="Yakimov">Michail M. Yakimov</name><affiliation><nlm:aff id="aff2"><institution>CNR–Institute for Coastal Marine Environment</institution>, Messina,<country>Italy</country></nlm:aff></affiliation></author><author><name sortKey="Lacono, Violetta" sort="Lacono, Violetta" uniqKey="Lacono V" first="Violetta" last="Lacono">Violetta Lacono</name><affiliation><nlm:aff id="aff2"><institution>CNR–Institute for Coastal Marine Environment</institution>, Messina,<country>Italy</country></nlm:aff></affiliation></author><author><name sortKey="Leadbetter, Edward" sort="Leadbetter, Edward" uniqKey="Leadbetter E" first="Edward" last="Leadbetter">Edward Leadbetter</name><affiliation><nlm:aff id="aff1"><institution>Woods Hole Oceanographic Institution</institution>, Woods Hole, MA,<country>USA</country></nlm:aff></affiliation></author><author><name sortKey="Edgcomb, Virginia" sort="Edgcomb, Virginia" uniqKey="Edgcomb V" first="Virginia" last="Edgcomb">Virginia Edgcomb</name><affiliation><nlm:aff id="aff1"><institution>Woods Hole Oceanographic Institution</institution>, Woods Hole, MA,<country>USA</country></nlm:aff></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">PMC</idno><idno type="pmid">24950109</idno><idno type="pmc">4260694</idno><idno type="url">http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4260694</idno><idno type="RBID">PMC:4260694</idno><idno type="doi">10.1038/ismej.2014.100</idno><date when="2014">2014</date><idno type="wicri:Area/Pmc/Corpus">000018</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en" level="a" type="main">Unveiling microbial activities along the halocline of Thetis, a deep-sea hypersaline anoxic basin</title><author><name sortKey="Pachiadaki, Maria G" sort="Pachiadaki, Maria G" uniqKey="Pachiadaki M" first="Maria G" last="Pachiadaki">Maria G. Pachiadaki</name><affiliation><nlm:aff id="aff1"><institution>Woods Hole Oceanographic Institution</institution>, Woods Hole, MA,<country>USA</country></nlm:aff></affiliation></author><author><name sortKey="Yakimov, Michail M" sort="Yakimov, Michail M" uniqKey="Yakimov M" first="Michail M" last="Yakimov">Michail M. Yakimov</name><affiliation><nlm:aff id="aff2"><institution>CNR–Institute for Coastal Marine Environment</institution>, Messina,<country>Italy</country></nlm:aff></affiliation></author><author><name sortKey="Lacono, Violetta" sort="Lacono, Violetta" uniqKey="Lacono V" first="Violetta" last="Lacono">Violetta Lacono</name><affiliation><nlm:aff id="aff2"><institution>CNR–Institute for Coastal Marine Environment</institution>, Messina,<country>Italy</country></nlm:aff></affiliation></author><author><name sortKey="Leadbetter, Edward" sort="Leadbetter, Edward" uniqKey="Leadbetter E" first="Edward" last="Leadbetter">Edward Leadbetter</name><affiliation><nlm:aff id="aff1"><institution>Woods Hole Oceanographic Institution</institution>, Woods Hole, MA,<country>USA</country></nlm:aff></affiliation></author><author><name sortKey="Edgcomb, Virginia" sort="Edgcomb, Virginia" uniqKey="Edgcomb V" first="Virginia" last="Edgcomb">Virginia Edgcomb</name><affiliation><nlm:aff id="aff1"><institution>Woods Hole Oceanographic Institution</institution>, Woods Hole, MA,<country>USA</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="2014">2014</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en"><p>Deep-sea hypersaline anoxic basins (DHABs) in the Eastern Mediterranean Sea are considered some of the most hostile environments on Earth. Little is known about the biochemical adaptations of microorganisms living in these habitats. This first metatranscriptome analysis of DHAB samples provides significant insights into shifts in metabolic activities of microorganisms as physicochemical conditions change from deep Mediterranean sea water to brine. The analysis of Thetis DHAB interface indicates that sulfate reduction occurs in both the upper (7.0–16.3% salinity) and lower (21.4–27.6%) halocline, but that expression of dissimilatory sulfate reductase is reduced in the more hypersaline lower halocline. High dark-carbon assimilation rates in the upper interface coincided with high abundance of transcripts for ribulose 1,5-bisphosphate carboxylase affiliated to sulfur-oxidizing bacteria. In the lower interface, increased expression of genes associated with methane metabolism and osmoregulation is noted. In addition, in this layer, nitrogenase transcripts affiliated to uncultivated putative methanotrophic archaea were detected, implying nitrogen fixation in this anoxic habitat, and providing evidence of linked carbon, nitrogen and sulfur cycles.</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-id journal-id-type="iso-abbrev">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">24950109</article-id><article-id pub-id-type="pmc">4260694</article-id><article-id pub-id-type="pii">ismej2014100</article-id><article-id pub-id-type="doi">10.1038/ismej.2014.100</article-id><article-categories><subj-group subj-group-type="heading"><subject>Original Article</subject></subj-group></article-categories><title-group><article-title>Unveiling microbial activities along the halocline of Thetis, a deep-sea hypersaline anoxic basin</article-title><alt-title alt-title-type="running">Metatranscriptomics analysis of Thetis interface</alt-title></title-group><contrib-group><contrib contrib-type="author"><name><surname>Pachiadaki</surname><given-names>Maria G</given-names></name><xref ref-type="aff" rid="aff1">1</xref><xref ref-type="corresp" rid="caf1">*</xref></contrib><contrib contrib-type="author"><name><surname>Yakimov</surname><given-names>Michail M</given-names></name><xref ref-type="aff" rid="aff2">2</xref></contrib><contrib contrib-type="author"><name><surname>LaCono</surname><given-names>Violetta</given-names></name><xref ref-type="aff" rid="aff2">2</xref></contrib><contrib contrib-type="author"><name><surname>Leadbetter</surname><given-names>Edward</given-names></name><xref ref-type="aff" rid="aff1">1</xref></contrib><contrib contrib-type="author"><name><surname>Edgcomb</surname><given-names>Virginia</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>Woods Hole Oceanographic Institution</institution>, Woods Hole, MA,<country>USA</country></aff><aff id="aff2"><label>2</label><institution>CNR–Institute for Coastal Marine Environment</institution>, Messina,<country>Italy</country></aff></contrib-group><author-notes><corresp id="caf1"><label>*</label><institution>Woods Hole Oceanographic Institution</institution>, 266 Woods Hole Road, MS #8, 02543 Woods Hole, MA, <country>USA</country>. E-mail: <email>mpachiadaki@whoi.edu</email> or <email>vedgcomb@whoi.edu</email></corresp></author-notes><pub-date pub-type="ppub"><month>12</month><year>2014</year></pub-date><pub-date pub-type="epub"><day>20</day><month>06</month><year>2014</year></pub-date><volume>8</volume><issue>12</issue><fpage>2478</fpage><lpage>2489</lpage><history><date date-type="received"><day>04</day><month>02</month><year>2014</year></date><date date-type="rev-recd"><day>30</day><month>04</month><year>2014</year></date><date date-type="accepted"><day>11</day><month>05</month><year>2014</year></date></history><permissions><copyright-statement>Copyright © 2014 International Society for Microbial Ecology</copyright-statement><copyright-year>2014</copyright-year><copyright-holder>International Society for Microbial Ecology</copyright-holder></permissions><abstract><p>Deep-sea hypersaline anoxic basins (DHABs) in the Eastern Mediterranean Sea are considered some of the most hostile environments on Earth. Little is known about the biochemical adaptations of microorganisms living in these habitats. This first metatranscriptome analysis of DHAB samples provides significant insights into shifts in metabolic activities of microorganisms as physicochemical conditions change from deep Mediterranean sea water to brine. The analysis of Thetis DHAB interface indicates that sulfate reduction occurs in both the upper (7.0–16.3% salinity) and lower (21.4–27.6%) halocline, but that expression of dissimilatory sulfate reductase is reduced in the more hypersaline lower halocline. High dark-carbon assimilation rates in the upper interface coincided with high abundance of transcripts for ribulose 1,5-bisphosphate carboxylase affiliated to sulfur-oxidizing bacteria. In the lower interface, increased expression of genes associated with methane metabolism and osmoregulation is noted. In addition, in this layer, nitrogenase transcripts affiliated to uncultivated putative methanotrophic archaea were detected, implying nitrogen fixation in this anoxic habitat, and providing evidence of linked carbon, nitrogen and sulfur cycles.</p></abstract></article-meta></front></pmc></record>Pour manipuler ce document sous Unix (Dilib)
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