English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/165784
Share/Impact:
Statistics
logo share SHARE   Add this article to your Mendeley library MendeleyBASE
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:
Title

Metal contaminations impact archaeal community composition, abundance and function in remote alpine lakes

AuthorsCompte-Port, Sergi; Borrego, Carles M.; Jeanbille, Mathilde; Restrepo-Ortiz, Claudia X.; de Diego, Alberto; Rodríguez-Iruretagoiena, Azibar; Gredilla, Ainara; Fernández-Ortiz de Vallejuelo, Silvia; Galand, Pierre E. ; Kalenitchenko, Dimitri; Rols, Jean-Luc; Pokrovsky, Oleg S.; González, Aridane G.; Camarero, Lluís ; Muñiz, Selene ; Navarro-Navarro, Enrique; Auguet, Jean-Christophe
Issue Date2018
PublisherBlackwell Publishing
CitationEnvironmental Microbiology : doi:10.1111/1462-2920.14252 (2018)
AbstractUsing the 16S rRNA and mcrA genes, we investigated the composition, abundance and activity of sediment archaeal communities within 18 high-mountain lakes under contrasted metal levels from different origins (bedrock erosion, past-mining activities and atmospheric depositions). Bathyarchaeota, Euryarchaeota and Woesearchaeota were the major phyla found at the meta-community scale, representing 48%, 18.3% and 15.2% of the archaeal community respectively. Metals were equally important as physicochemical variables in explaining the assemblage of archaeal communities and their abundance. Methanogenesis appeared as a process of central importance in the carbon cycle within sediments of alpine lakes as indicated by the absolute abundance of methanogen 16S rRNA and mcrA gene transcripts (105 to 109 copies g21). We showed that methanogen abundance and activity were significantly reduced with increasing concentrations of Pb and Cd, two indicators of airborne metal contaminations. Considering the ecological importance of methanogenesis in sediment habitats, these metal contaminations may have system wide implications even in remote area such as alpine lakes. Overall, this work was pioneer in integrating the effect of longrange atmospheric depositions on archaeal communities and indicated that metal contamination might significantly compromise the contribution of Archaea to the carbon cycling of the mountain lake sediments.
DescriptionEste artículo contiene 16 páginas, 6 figuras.
Publisher version (URL)https://doi.org/10.1111/1462-2920.14252
URIhttp://hdl.handle.net/10261/165784
ISSN1462-2912
E-ISSN1462-2920
Appears in Collections:(CEAB) Artículos
Files in This Item:
There are no files associated with this item.
Show full item record
Review this work
 


WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.