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    Diversity of Archaea and detection of crenarchaeotal amoA genes in the rivers Rhine and Têt

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    Date
    2009-04-28
    Author
    Herfort, Lydie  Concept link
    Kim, Jung-Hyun  Concept link
    Coolen, Marco J. L.  Concept link
    Abbas, Ben  Concept link
    Schouten, Stefan  Concept link
    Herndl, Gerhard J.  Concept link
    Sinninghe Damste, Jaap S.  Concept link
    Metadata
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    Citable URI
    https://hdl.handle.net/1912/4450
    As published
    https://doi.org/10.3354/ame01294
    DOI
    10.3354/ame01294
    Keyword
     Archaea; River; Diversity; Nitrification 
    Abstract
    Pelagic archaeal phylogenetic diversity and the potential for crenarchaeotal nitrification of Group 1.1a were determined in the rivers Rhine and Têt by 16S rRNA sequencing, catalyzed reported deposition-fluorescence in situ hybridization (CARD–FISH) and quantification of 16S rRNA and functional genes. Euryarchaeota were, for the first time, detected in temperate river water even though a net predominance of crenarchaeotal phylotypes was found. Differences in phylogenic distribution were observed between rivers and seasons. Our data suggest that a few archaeal phylotypes (Euryarchaeota Groups RC-V and LDS, Crenarchaeota Group 1.1a) are widely distributed in pelagic riverine environments whilst others (Euryarchaeota Cluster Sagma-1) may only occur seasonally in river water. Crenarchaeota Group 1.1a has recently been identified as a major nitrifier in the marine environment and phylotypes of this group were also present in both rivers, where they represented 0.3% of the total pelagic microbial community. Interestingly, a generally higher abundance of Crenarchaeota Group 1.1a was found in the Rhine than in the Têt, and crenarchaeotal ammonia monooxygenase gene (amoA) was also detected in the Rhine, with higher amoA copy numbers measured in February than in September. This suggests that some of the Crenarchaeota present in river waters have the ability to oxidize ammonia and that riverine crenarchaeotal nitrification of Group 1.1a may vary seasonally.
    Description
    Author Posting. © Inter-Research, 2009. This article is posted here by permission of Inter-Research for personal use, not for redistribution. The definitive version was published in Aquatic Microbial Ecology 55 (2009): 189-201, doi:10.3354/ame01294.
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    • Marine Chemistry and Geochemistry (MC&G)
    Suggested Citation
    Aquatic Microbial Ecology 55 (2009): 189-201
     

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