Metatranscriptomic Analysis of Diminutive Thiomargarita-Like Bacteria (“Candidatus Thiopilula” spp.) from Abyssal Cold Seeps of the Barbados Accretionary Prism
Identifieur interne : 000092 ( Main/Exploration ); précédent : 000091; suivant : 000093Metatranscriptomic Analysis of Diminutive Thiomargarita-Like Bacteria (“Candidatus Thiopilula” spp.) from Abyssal Cold Seeps of the Barbados Accretionary Prism
Auteurs : Daniel S. Jones ; Beverly E. Flood ; Jake V. BaileySource :
- Applied and Environmental Microbiology [ 0099-2240 ] ; 2015.
Abstract
Large sulfur-oxidizing bacteria in the family
Url:
DOI: 10.1128/AEM.00039-15
PubMed: 25724961
PubMed Central: 4393456
Affiliations:
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Le document en format XML
<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en">Metatranscriptomic Analysis of Diminutive <named-content content-type="genus-species">Thiomargarita</named-content>
-Like Bacteria (“<named-content content-type="genus-species">Candidatus</named-content>
Thiopilula” spp.) from Abyssal Cold Seeps of the Barbados Accretionary Prism</title>
<author><name sortKey="Jones, Daniel S" sort="Jones, Daniel S" uniqKey="Jones D" first="Daniel S." last="Jones">Daniel S. Jones</name>
</author>
<author><name sortKey="Flood, Beverly E" sort="Flood, Beverly E" uniqKey="Flood B" first="Beverly E." last="Flood">Beverly E. Flood</name>
</author>
<author><name sortKey="Bailey, Jake V" sort="Bailey, Jake V" uniqKey="Bailey J" first="Jake V." last="Bailey">Jake V. Bailey</name>
</author>
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<sourceDesc><biblStruct><analytic><title xml:lang="en" level="a" type="main">Metatranscriptomic Analysis of Diminutive <named-content content-type="genus-species">Thiomargarita</named-content>
-Like Bacteria (“<named-content content-type="genus-species">Candidatus</named-content>
Thiopilula” spp.) from Abyssal Cold Seeps of the Barbados Accretionary Prism</title>
<author><name sortKey="Jones, Daniel S" sort="Jones, Daniel S" uniqKey="Jones D" first="Daniel S." last="Jones">Daniel S. Jones</name>
</author>
<author><name sortKey="Flood, Beverly E" sort="Flood, Beverly E" uniqKey="Flood B" first="Beverly E." last="Flood">Beverly E. Flood</name>
</author>
<author><name sortKey="Bailey, Jake V" sort="Bailey, Jake V" uniqKey="Bailey J" first="Jake V." last="Bailey">Jake V. Bailey</name>
</author>
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<series><title level="j">Applied and Environmental Microbiology</title>
<idno type="ISSN">0099-2240</idno>
<idno type="eISSN">1098-5336</idno>
<imprint><date when="2015">2015</date>
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<front><div type="abstract" xml:lang="en"><p>Large sulfur-oxidizing bacteria in the family <named-content content-type="genus-species">Beggiatoaceae</named-content>
are important players in the global sulfur cycle. This group contains members of the well-known genera <named-content content-type="genus-species">Beggiatoa</named-content>
, <named-content content-type="genus-species">Thioploca</named-content>
, and <named-content content-type="genus-species">Thiomargarita</named-content>
but also recently identified and relatively unknown candidate taxa, including “<named-content content-type="genus-species">Candidatus</named-content>
Thiopilula” spp. and “<italic>Ca</italic>
. Thiophysa” spp. We discovered a population of “<italic>Ca</italic>
. Thiopilula” spp. colonizing cold seeps near Barbados at a ∼4.7-km water depth. The Barbados population consists of spherical cells that are morphologically similar to <named-content content-type="genus-species">Thiomargarita</named-content>
spp., with elemental sulfur inclusions and a central vacuole, but have much smaller cell diameters (5 to 40 μm). Metatranscriptomic analysis revealed that when exposed to anoxic sulfidic conditions, Barbados “<italic>Ca</italic>
. Thiopilula” organisms expressed genes for the oxidation of elemental sulfur and the reduction of nitrogenous compounds, consistent with their vacuolated morphology and intracellular sulfur storage capability. Metatranscriptomic analysis further revealed that anaerobic methane-oxidizing and sulfate-reducing organisms were active in the sediment, which likely provided reduced sulfur substrates for “<italic>Ca</italic>
. Thiopilula” and other sulfur-oxidizing microorganisms in the community. The novel observations of “<italic>Ca</italic>
. Thiopilula” and associated organisms reported here expand our knowledge of the globally distributed and ecologically successful <named-content content-type="genus-species">Beggiatoaceae</named-content>
group and thus offer insight into the composition and ecology of deep cold seep microbial communities.</p>
</div>
</front>
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<tree><noCountry><name sortKey="Bailey, Jake V" sort="Bailey, Jake V" uniqKey="Bailey J" first="Jake V." last="Bailey">Jake V. Bailey</name>
<name sortKey="Flood, Beverly E" sort="Flood, Beverly E" uniqKey="Flood B" first="Beverly E." last="Flood">Beverly E. Flood</name>
<name sortKey="Jones, Daniel S" sort="Jones, Daniel S" uniqKey="Jones D" first="Daniel S." last="Jones">Daniel S. Jones</name>
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