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Discovery of a novel methanogen prevalent in thawing permafrost

Mondav, Rhiannon LU orcid ; Woodcroft, Ben J. ; Kim, Eun-hae ; Mccalley, Carmody K. ; Hodgkins, Suzanne B. ; M. Crill, Patrick ; Chanton, Jeffrey ; Hurst, Gregory B. ; Verberkmoes, Nathan C. and Saleska, Scott R. , et al. (2014) In Nature Communications 5.
Abstract
Thawing permafrost promotes microbial degradation of cryo-sequestered and new carbon leading to the biogenic production of methane, creating a positive feedback to climate change. Here we determine microbial community composition along a permafrost thaw gradient in northern Sweden. Partially thawed sites were frequently dominated by a single archaeal phylotype, Candidatus 'Methanoflorens stordalenmirensis' gen. nov. sp. nov., belonging to the uncultivated lineage 'Rice Cluster II' (Candidatus 'Methanoflorentaceae' fam. nov.). Metagenomic sequencing led to the recovery of its near-complete genome, revealing the genes necessary for hydrogenotrophic methanogenesis. These genes are highly expressed and methane carbon isotope data are... (More)
Thawing permafrost promotes microbial degradation of cryo-sequestered and new carbon leading to the biogenic production of methane, creating a positive feedback to climate change. Here we determine microbial community composition along a permafrost thaw gradient in northern Sweden. Partially thawed sites were frequently dominated by a single archaeal phylotype, Candidatus 'Methanoflorens stordalenmirensis' gen. nov. sp. nov., belonging to the uncultivated lineage 'Rice Cluster II' (Candidatus 'Methanoflorentaceae' fam. nov.). Metagenomic sequencing led to the recovery of its near-complete genome, revealing the genes necessary for hydrogenotrophic methanogenesis. These genes are highly expressed and methane carbon isotope data are consistent with hydrogenotrophic production of methane in the partially thawed site. In addition to permafrost wetlands, 'Methanoflorentaceae' are widespread in high methane-flux habitats suggesting that this lineage is both prevalent and a major contributor to global methane production. In thawing permafrost, Candidatus 'M. stordalenmirensis' appears to be a key mediator of methane-based positive feedback to climate warming. © 2014 Macmillan Publishers Limited. (Less)
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publishing date
type
Contribution to journal
publication status
published
subject
in
Nature Communications
volume
5
article number
3212
pages
7 pages
publisher
Nature Publishing Group
external identifiers
  • scopus:84894042453
ISSN
2041-1723
DOI
10.1038/ncomms4212
language
English
LU publication?
no
id
e30cf9e7-fd2e-48ab-a983-75c7439089b9
date added to LUP
2023-06-05 15:54:49
date last changed
2024-02-03 14:10:10
@article{e30cf9e7-fd2e-48ab-a983-75c7439089b9,
  abstract     = {{Thawing permafrost promotes microbial degradation of cryo-sequestered and new carbon leading to the biogenic production of methane, creating a positive feedback to climate change. Here we determine microbial community composition along a permafrost thaw gradient in northern Sweden. Partially thawed sites were frequently dominated by a single archaeal phylotype, Candidatus 'Methanoflorens stordalenmirensis' gen. nov. sp. nov., belonging to the uncultivated lineage 'Rice Cluster II' (Candidatus 'Methanoflorentaceae' fam. nov.). Metagenomic sequencing led to the recovery of its near-complete genome, revealing the genes necessary for hydrogenotrophic methanogenesis. These genes are highly expressed and methane carbon isotope data are consistent with hydrogenotrophic production of methane in the partially thawed site. In addition to permafrost wetlands, 'Methanoflorentaceae' are widespread in high methane-flux habitats suggesting that this lineage is both prevalent and a major contributor to global methane production. In thawing permafrost, Candidatus 'M. stordalenmirensis' appears to be a key mediator of methane-based positive feedback to climate warming. © 2014 Macmillan Publishers Limited.}},
  author       = {{Mondav, Rhiannon and Woodcroft, Ben J. and Kim, Eun-hae and Mccalley, Carmody K. and Hodgkins, Suzanne B. and M. Crill, Patrick and Chanton, Jeffrey and Hurst, Gregory B. and Verberkmoes, Nathan C. and Saleska, Scott R. and Hugenholtz, Philip and Rich, Virginia I. and Tyson, Gene W.}},
  issn         = {{2041-1723}},
  language     = {{eng}},
  publisher    = {{Nature Publishing Group}},
  series       = {{Nature Communications}},
  title        = {{Discovery of a novel methanogen prevalent in thawing permafrost}},
  url          = {{http://dx.doi.org/10.1038/ncomms4212}},
  doi          = {{10.1038/ncomms4212}},
  volume       = {{5}},
  year         = {{2014}},
}