Serpentinomonas- respectively. Besides, potential chemoorganotrophy was attributed mainly to representatives of Actinobacteria and Planctomycetales phyla. The reported 16S rRNA gene data strongly suggested that hydrogen, methane, and nitrogen-based chemolithotrophy can sustain growth of the microbial communities inhabiting the carbonate precipitates in the hyperalkaline springs of the Voltri Massif, similarly to what was previously observed in other serpentinite-hosted ecosystems. Keywords Microbial diversity Serpentinization Carbonates Liguria Alkaliphilic Extreme environment Pyrosequencing" />
Endolithic microbial communities in carbonate precipitates from serpentinite-hosted hyperalkaline springs of the Voltri Massif (Ligurian Alps, Northern Italy)
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  • 作者:Marianne Quéméneur ; Alexandra Palvadeau…
  • 关键词:Microbial diversity ; Serpentinization ; Carbonates ; Liguria ; Alkaliphilic ; Extreme environment ; Pyrosequencing
  • 刊名:Environmental Science and Pollution Research
  • 出版年:2015
  • 出版时间:September 2015
  • 年:2015
  • 卷:22
  • 期:18
  • 页码:13613-13624
  • 全文大小:807 KB
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  • 作者单位:Marianne Quéméneur (1)
    Alexandra Palvadeau (1)
    Anne Postec (1)
    Christophe Monnin (2)
    Valérie Chavagnac (2)
    Bernard Ollivier (1)
    Ga?l Erauso (1)

    1. Aix-Marseille Université, CNRS/INSU, Université de Toulon, IRD, Mediterranean Institute of Oceanography (MIO), UM 110, 13288, Marseille, France
    2. GET (Géosciences Environnement Toulouse) UMR5563, Observatoire Midi-Pyrénées, Université de Toulouse, CNRS, IRD, 14 Avenue Edouard Belin, 31400, Toulouse, France
  • 刊物类别:Earth and Environmental Science
  • 刊物主题:Environment
    Environment
    Atmospheric Protection, Air Quality Control and Air Pollution
    Waste Water Technology, Water Pollution Control, Water Management and Aquatic Pollution
    Industrial Pollution Prevention
  • 出版者:Springer Berlin / Heidelberg
  • ISSN:1614-7499
文摘
The Voltri Massif is an ophiolitic complex located in the Ligurian Alps close to the city of Genova (Northern Italy) where several springs discharge high pH (up to 11.7), low salinity waters produced by the active serpentinization of the ultramafic basement. Mixing of these hyperalkaline waters with the river waters along with the uptake of atmospheric carbon dioxide forms brownish carbonate precipitates covering the bedrock at the springs. Diverse archaeal and bacterial communities were detected in these carbonate precipitates using 454 pyrosequencing analyses of 16S ribosomal RNA (rRNA) genes. Archaeal communities were dominated by members of potential methane-producing and/or methane-oxidizing Methanobacteriales and Methanosarcinales (Euryarchaeota) together with ammonia-oxidizing Nitrososphaerales (Thaumarchaeota) similar to those found in other serpentinization-driven submarine and terrestrial ecosystems. Bacterial communities consisted of members of the Proteobacteria, Actinobacteria, Planctomycetes, Bacteroidetes, Chloroflexi, and Verrucomicrobia phyla, altogether accounting for 92.2 % of total retrieved bacterial 16S rRNA gene sequences. Amongst Bacteria, potential chemolithotrophy was mainly associated with Alpha- and Betaproteobacteria classes, including nitrogen-fixing, methane-oxidizing or hydrogen-oxidizing representatives of the genera Azospirillum, Methylosinus, and Hydrogenophaga/-em class="EmphasisTypeItalic ">Serpentinomonas- respectively. Besides, potential chemoorganotrophy was attributed mainly to representatives of Actinobacteria and Planctomycetales phyla. The reported 16S rRNA gene data strongly suggested that hydrogen, methane, and nitrogen-based chemolithotrophy can sustain growth of the microbial communities inhabiting the carbonate precipitates in the hyperalkaline springs of the Voltri Massif, similarly to what was previously observed in other serpentinite-hosted ecosystems. Keywords Microbial diversity Serpentinization Carbonates Liguria Alkaliphilic Extreme environment Pyrosequencing

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