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Metagenomic insights into microbial metabolism affecting arsenic dispersion in Mediterranean marine sediments

Overview of attention for article published in Molecular Ecology, September 2013
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Title
Metagenomic insights into microbial metabolism affecting arsenic dispersion in Mediterranean marine sediments
Published in
Molecular Ecology, September 2013
DOI 10.1111/mec.12432
Pubmed ID
Authors

Frédéric Plewniak, Sandrine Koechler, Benjamin Navet, Éric Dugat‐Bony, Olivier Bouchez, Pierre Peyret, Fabienne Séby, Fabienne Battaglia‐Brunet, Philippe N. Bertin

Abstract

Microorganisms dwelling in sediments have a crucial role in biogeochemical cycles and are expected to have a strong influence on the cycle of arsenic, a metalloid responsible for severe water pollution and presenting major health risks for human populations. We present here a metagenomic study of the sediment from two harbours on the Mediterranean French coast, l'Estaque and St Mandrier. The first site is highly polluted with arsenic and heavy metals, while the arsenic concentration in the second site is below toxicity levels. The goal of this study was to elucidate the potential impact of the microbial community on the chemical parameters observed in complementary geochemical studies performed on the same sites. The metagenomic sequences, along with those from four publicly available metagenomes used as control data sets, were analysed with the RAMMCAP workflow. The resulting functional profiles were compared to determine the over-represented Gene Ontology categories in the metagenomes of interest. Categories related to arsenic resistance and dissimilatory sulphate reduction were over-represented in l'Estaque. More importantly, despite very similar profiles, the identification of specific sequence markers for sulphate-reducing bacteria and sulphur-oxidizing bacteria showed that sulphate reduction was significantly more associated with l'Estaque than with St Mandrier. We propose that biotic sulphate reduction, arsenate reduction and fermentation may together explain the higher mobility of arsenic observed in l'Estaque in previous physico-chemical studies of this site. This study also demonstrates that it is possible to draw sound conclusions from comparing complex and similar unassembled metagenomes at the functional level, even with very low sequence coverage.

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Mendeley readers

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The data shown below were compiled from readership statistics for 75 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
Brazil 2 3%
Netherlands 1 1%
Colombia 1 1%
France 1 1%
South Africa 1 1%
Unknown 69 92%

Demographic breakdown

Readers by professional status Count As %
Researcher 19 25%
Student > Ph. D. Student 14 19%
Student > Master 12 16%
Student > Doctoral Student 8 11%
Student > Postgraduate 7 9%
Other 6 8%
Unknown 9 12%
Readers by discipline Count As %
Agricultural and Biological Sciences 32 43%
Biochemistry, Genetics and Molecular Biology 12 16%
Environmental Science 8 11%
Engineering 4 5%
Computer Science 2 3%
Other 7 9%
Unknown 10 13%
Attention Score in Context

Attention Score in Context

This research output has an Altmetric Attention Score of 1. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 24 September 2013.
All research outputs
#19,977,226
of 24,549,201 outputs
Outputs from Molecular Ecology
#6,052
of 6,577 outputs
Outputs of similar age
#151,964
of 202,244 outputs
Outputs of similar age from Molecular Ecology
#63
of 83 outputs
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We're also able to compare this research output to 83 others from the same source and published within six weeks on either side of this one. This one is in the 6th percentile – i.e., 6% of its contemporaries scored the same or lower than it.