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Methanogens and Iro...
Methanogens and Iron-Reducing Bacteria : the Overlooked Members of Mercury-Methylating Microbial Communities in Boreal Lakes
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- Bravo, Andrea Garcia (författare)
- Uppsala universitet,Limnologi,Science for Life Laboratory, SciLifeLab,Department of Marine Biology and Oceanography, Institut de Ciències del Mar, Consejo Superior de Investigaciones Científicas, Barcelona, Catalonia, Spain
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- Peura, Sari (författare)
- Uppsala universitet,Science for Life Laboratory, SciLifeLab,Limnologi
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- Buck, Moritz (författare)
- Uppsala universitet,Limnologi,Science for Life Laboratory, SciLifeLab
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- Osman, Omneya (författare)
- Uppsala universitet,Limnologi,Science for Life Laboratory, SciLifeLab
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- Mateos-Rivera, Alejandro (författare)
- Uppsala universitet,Limnologi,Science for Life Laboratory, SciLifeLab
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- Herrero Ortega, Sonia (författare)
- Uppsala universitet,Science for Life Laboratory, SciLifeLab,Limnologi
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Schaefer, Jeffra K. (författare)
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Bouchet, Sylvain (författare)
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Tolu, Julie (författare)
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Björn, Erik (författare)
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- Bertilsson, Stefan (författare)
- Uppsala universitet,Limnologi,Science for Life Laboratory, SciLifeLab
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(creator_code:org_t)
- 2018
- 2018
- Engelska.
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Ingår i: Applied and Environmental Microbiology. - 0099-2240 .- 1098-5336. ; 84:23
- Relaterad länk:
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https://doi.org/10.1...
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https://uu.diva-port... (primary) (Raw object)
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https://urn.kb.se/re...
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Abstract
Ämnesord
Stäng
- Methylmercury is a potent human neurotoxin which biomagnifies in aquatic food webs. Although anaerobic microorganisms containing the hgcA gene potentially mediate the formation of methylmercury in natural environments, the di- versity of these mercury-methylating microbial communities remains largely unex- plored. Previous studies have implicated sulfate-reducing bacteria as the main mer- cury methylators in aquatic ecosystems. In the present study, we characterized the diversity of mercury-methylating microbial communities of boreal lake sediments us- ing high-throughput sequencing of 16S rRNA and hgcA genes. Our results show that in the lake sediments, Methanomicrobiales and Geobacteraceae also represent abun- dant members of the mercury-methylating communities. In fact, incubation experi- ments with a mercury isotopic tracer and molybdate revealed that only between 38% and 45% of mercury methylation was attributed to sulfate reduction. These re- sults suggest that methanogens and iron-reducing bacteria may contribute to more than half of the mercury methylation in boreal lakes.
Ämnesord
- NATURVETENSKAP -- Biologi -- Ekologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Ecology (hsv//eng)
Nyckelord
- mercury
- methylation
- hgcA gene
- 16S rRNA gene
- boreal lakes
- methanogens
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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Till lärosätets databas
- Av författaren/redakt...
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Bravo, Andrea Ga ...
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Peura, Sari
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Buck, Moritz
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Osman, Omneya
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Mateos-Rivera, A ...
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Herrero Ortega, ...
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visa fler...
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Schaefer, Jeffra ...
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Bouchet, Sylvain
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Tolu, Julie
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Björn, Erik
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Bertilsson, Stef ...
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visa färre...
- Om ämnet
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- NATURVETENSKAP
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NATURVETENSKAP
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och Biologi
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och Ekologi
- Artiklar i publikationen
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Applied and Envi ...
- Av lärosätet
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Uppsala universitet