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Habitat generalists and specialists in microbial communities across a terrestrial-freshwater gradient

Observations of distributions of microorganisms and their differences in community composition across habitats provide evidence of biogeographical patterns. However, little is known about the processes controlling transfers across habitat gradients. By analysing the overall microbial community compo...

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Autores principales: Monard, C., Gantner, S., Bertilsson, S., Hallin, S., Stenlid, J.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2016
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5123577/
https://www.ncbi.nlm.nih.gov/pubmed/27886241
http://dx.doi.org/10.1038/srep37719
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author Monard, C.
Gantner, S.
Bertilsson, S.
Hallin, S.
Stenlid, J.
author_facet Monard, C.
Gantner, S.
Bertilsson, S.
Hallin, S.
Stenlid, J.
author_sort Monard, C.
collection PubMed
description Observations of distributions of microorganisms and their differences in community composition across habitats provide evidence of biogeographical patterns. However, little is known about the processes controlling transfers across habitat gradients. By analysing the overall microbial community composition (bacteria, fungi, archaea) across a terrestrial-freshwater gradient, the aim of this study was to understand the spatial distribution patterns of populations and identify taxa capable of crossing biome borders. Barcoded 454 pyrosequencing of taxonomic gene markers was used to describe the microbial communities in adjacent soil, freshwater and sediment samples and study the role of biotic and spatial factors in shaping their composition. Few habitat generalists but a high number of specialists were detected indicating that microbial community composition was mainly regulated by species sorting and niche partitioning. Biotic interactions within microbial groups based on an association network underlined the importance of Actinobacteria, Sordariomycetes, Agaricomycetes and Nitrososphaerales in connecting among biomes. Even if dispersion seemed limited, the shore of the lake represented a transition area, allowing populations to cross the biome boundaries. In finding few broadly distributed populations, our study points to biome specialization within microbial communities with limited potential for dispersal and colonization of new habitats along the terrestrial-freshwater continuum.
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spelling pubmed-51235772016-12-07 Habitat generalists and specialists in microbial communities across a terrestrial-freshwater gradient Monard, C. Gantner, S. Bertilsson, S. Hallin, S. Stenlid, J. Sci Rep Article Observations of distributions of microorganisms and their differences in community composition across habitats provide evidence of biogeographical patterns. However, little is known about the processes controlling transfers across habitat gradients. By analysing the overall microbial community composition (bacteria, fungi, archaea) across a terrestrial-freshwater gradient, the aim of this study was to understand the spatial distribution patterns of populations and identify taxa capable of crossing biome borders. Barcoded 454 pyrosequencing of taxonomic gene markers was used to describe the microbial communities in adjacent soil, freshwater and sediment samples and study the role of biotic and spatial factors in shaping their composition. Few habitat generalists but a high number of specialists were detected indicating that microbial community composition was mainly regulated by species sorting and niche partitioning. Biotic interactions within microbial groups based on an association network underlined the importance of Actinobacteria, Sordariomycetes, Agaricomycetes and Nitrososphaerales in connecting among biomes. Even if dispersion seemed limited, the shore of the lake represented a transition area, allowing populations to cross the biome boundaries. In finding few broadly distributed populations, our study points to biome specialization within microbial communities with limited potential for dispersal and colonization of new habitats along the terrestrial-freshwater continuum. Nature Publishing Group 2016-11-25 /pmc/articles/PMC5123577/ /pubmed/27886241 http://dx.doi.org/10.1038/srep37719 Text en Copyright © 2016, The Author(s) http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
spellingShingle Article
Monard, C.
Gantner, S.
Bertilsson, S.
Hallin, S.
Stenlid, J.
Habitat generalists and specialists in microbial communities across a terrestrial-freshwater gradient
title Habitat generalists and specialists in microbial communities across a terrestrial-freshwater gradient
title_full Habitat generalists and specialists in microbial communities across a terrestrial-freshwater gradient
title_fullStr Habitat generalists and specialists in microbial communities across a terrestrial-freshwater gradient
title_full_unstemmed Habitat generalists and specialists in microbial communities across a terrestrial-freshwater gradient
title_short Habitat generalists and specialists in microbial communities across a terrestrial-freshwater gradient
title_sort habitat generalists and specialists in microbial communities across a terrestrial-freshwater gradient
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5123577/
https://www.ncbi.nlm.nih.gov/pubmed/27886241
http://dx.doi.org/10.1038/srep37719
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