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Comparative Analysis of Microbial Diversity Across Temperature Gradients in Hot Springs From Yellowstone and Iceland

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dc.contributor Háskóli Íslands
dc.contributor University of Iceland
dc.contributor.author Podar, Peter T.
dc.contributor.author Yang, Zamin
dc.contributor.author Björnsdóttir, Snædís
dc.contributor.author Podar, Mircea
dc.date.accessioned 2020-12-17T13:49:24Z
dc.date.available 2020-12-17T13:49:24Z
dc.date.issued 2020-07-14
dc.identifier.citation Podar PT, Yang Z, Björnsdóttir SH and Podar M (2020) Comparative Analysis of Microbial Diversity Across Temperature Gradients in Hot Springs From Yellowstone and Iceland. Frontiers in Microbiology 11:1625. doi: 10.3389/fmicb.2020.01625
dc.identifier.issn 1664-302X
dc.identifier.uri https://hdl.handle.net/20.500.11815/2300
dc.description Publisher's version (útgefin grein)
dc.description.abstract Geothermal hot springs are a natural setting to study microbial adaptation to a wide range of temperatures reaching up to boiling. Temperature gradients lead to distinct microbial communities that inhabit their optimum niches. We sampled three alkaline, high temperature (80–100°C) hot springs in Yellowstone and Iceland that had cooling outflows and whose microbial communities had not been studied previously. The microbial composition in sediments and mats was determined by DNA sequencing of rRNA gene amplicons. Over three dozen phyla of Archaea and Bacteria were identified, representing over 1700 distinct organisms. We observed a significant non-linear reduction in the number of microbial taxa as the temperature increased from warm (38°C) to boiling. At high taxonomic levels, the community structure was similar between the Yellowstone and Iceland hot springs. We identified potential endemism at the genus level, especially in thermophilic phototrophs, which may have been potentially driven by distinct environmental conditions and dispersal limitations.
dc.description.sponsorship Environmental sampling in Iceland was under permits issued by Iceland?s National Energy Authority (Orkustofnun) to MP and SB. We thank Dr. Jakob Kristj?nsson for help with sampling and permits. Sampling in Yellowstone National Park was under permit YELL-SCI-5714 and we thank Stacey Gunther for help with sampling coordinating. We thank Adrian Gonzalez from The University of Tennessee Knoxville Water Quality Core Facility for chemical analysis of the water samples. Funding. This research was funded in part by grants from the National Science Foundation (DEB1134877) and the National Aeronautics and Space Administration (NNX16AJ66G). Oak Ridge National Laboratory is managed by UT-Battelle, LLC, for the United States Department of Energy under contract DE-AC05-00OR22725.
dc.format.extent 1625
dc.language.iso en
dc.publisher Frontiers Media SA
dc.relation.ispartofseries Frontiers in Microbiology;11
dc.rights info:eu-repo/semantics/openAccess
dc.subject Biogeography
dc.subject Hot springs
dc.subject Microbial ecology
dc.subject rRNA amplicons
dc.subject Thermophiles
dc.subject Líflandafræði
dc.subject Hverir
dc.subject Örverur
dc.title Comparative Analysis of Microbial Diversity Across Temperature Gradients in Hot Springs From Yellowstone and Iceland
dc.type info:eu-repo/semantics/article
dcterms.license This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
dc.description.version Peer Reviewed
dc.identifier.journal Frontiers in Microbiology
dc.identifier.doi 10.3389/fmicb.2020.01625
dc.relation.url https://www.frontiersin.org/article/10.3389/fmicb.2020.01625/full
dc.contributor.department Líf- og umhverfisvísindadeild (HÍ)
dc.contributor.department Faculty of Life and Environmental Sciences (UI)
dc.contributor.school Verkfræði- og náttúruvísindasvið (HÍ)
dc.contributor.school School of Engineering and Natural Sciences (UI)

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