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Poorly known microbial taxa dominate the microbiome of permafrost thaw ponds
Univ Gothenburg, Dept Biol & Environm Sci, Gothenburg, Sweden.;Gothenburg Global Biodivers Ctr, Gothenburg, Sweden..
Univ Gothenburg, Dept Biol & Environm Sci, Gothenburg, Sweden.;Gothenburg Global Biodivers Ctr, Gothenburg, Sweden..
Univ Quebec Chicoutimi, Dept Sci Fondamentales, Chicoutimi, PQ, Canada.;Univ Quebec Chicoutimi, Ctr Northern Studies CEN, Chicoutimi, PQ, Canada..
Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Genetics, Limnology. Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Sciences, Molecular epidemiology. Swedish Univ Agr Sci, Dept Forest Mycol & Plant Pathol, Sci Life Lab, Uppsala, Sweden..
2017 (English)In: The ISME Journal, ISSN 1751-7362, E-ISSN 1751-7370, Vol. 11, no 8, 1938-1941 p.Article in journal (Refereed) Published
Abstract [en]

In the transition zone of the shifting permafrost border, thaw ponds emerge as hotspots of microbial activity, processing the ancient carbon freed from the permafrost. We analyzed the microbial succession across a gradient of recently emerged to older ponds using three molecular markers: one universal, one bacterial and one fungal. Age was a major modulator of the microbial community of the thaw ponds. Surprisingly, typical freshwater taxa comprised only a small fraction of the community. Instead, thaw ponds of all age classes were dominated by enigmatic bacterial and fungal phyla. Our results on permafrost thaw ponds lead to a revised perception of the thaw pond ecosystem and their microbes, with potential implications for carbon and nutrient cycling in this increasingly important class of freshwaters.

Place, publisher, year, edition, pages
NATURE PUBLISHING GROUP , 2017. Vol. 11, no 8, 1938-1941 p.
National Category
Biological Sciences
Identifiers
URN: urn:nbn:se:uu:diva-331221DOI: 10.1038/ismej.2017.54ISI: 000405723500019PubMedID: 28430187OAI: oai:DiVA.org:uu-331221DiVA: diva2:1150229
Available from: 2017-10-18 Created: 2017-10-18 Last updated: 2017-10-18Bibliographically approved

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