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Volume 14, issue 6
Biogeosciences, 14, 1445–1455, 2017
https://doi.org/10.5194/bg-14-1445-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.
Biogeosciences, 14, 1445–1455, 2017
https://doi.org/10.5194/bg-14-1445-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.

Research article 21 Mar 2017

Research article | 21 Mar 2017

Viable cold-tolerant iron-reducing microorganisms in geographically diverse subglacial environments

Sophie L. Nixon et al.

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Cited articles

Bhatia, M., Sharp, M., and Foght, J.: Distinct bacterial communities exist beneath a High Arctic polythermal glacier, Appl. Environ. Microbiol., 72, 5838–5845, 2006.
Bottrell, S. H. and Tranter, M.: Sulphide oxidation under partially anoxic conditions at the bed of the Haut Glacier d'Arolla, Switzerland, Hydrol. Process., 16, 2363–2368, 2002.
Boyd, E. S., Lange, R. K., Mitchell, A. C., Havig, J. R., Hamilton, T. L., Lafrenière, M. J., Shock, E. L., Peters, J. W., and Skidmore, M.: Diversity, abundance, and potential activity of nitrifying and nitrate-reducing microbial assemblages in a subglacial ecosystem, Appl. Environ. Microbiol., 77, 4778–4787, 2011.
Boyd, E. S., Hamilton, T. L., Havig, J. R., Skidmore, M. L., and Shock, E. L.: Chemolithotrophic primary production in a subglacial ecosystem, Appl. Environ. Microbiol., 80, 6146–6153, 2014.
Buzzini, P., Turchetti, B., Diolaiuti, G., D'Agata, C., Martini, A., and Smiraglia, C.: Culturable yeasts in the meltwaters draining from two glaciers in the Italian Alps, Ann. Glaciol., 40, 119–122, 2005.
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Despite their permanently cold and dark characteristics, subglacial environments (glacier ice–sediment interface) are known to harbour active microbial communities. However, the role of microbial iron cycling in these environments is poorly understood. Here we show that subglacial sediments harbour active iron-reducing microorganisms, and they appear to be cold-adapted. These results may have important implications for global biogeochemical iron cycling and export to marine ecosystems.
Despite their permanently cold and dark characteristics, subglacial environments (glacier...
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