Reference : Homogeneous selection promotes microdiversity in the glacier-fed stream microbiome
E-prints/Working papers : Already available on another site
Physical, chemical, mathematical & earth Sciences : Multidisciplinary, general & others
http://hdl.handle.net/10993/46677
Homogeneous selection promotes microdiversity in the glacier-fed stream microbiome
English
Fodelianakis, Styliianos [Ecole Polytechnique Fédérale de Lausanne - EPFL]
Busi, Susheel Bhanu mailto [University of Luxembourg > Luxembourg Centre for Systems Biomedicine (LCSB) > Systems Ecology >]
Wilmes, Paul mailto [University of Luxembourg > Luxembourg Centre for Systems Biomedicine (LCSB) > Systems Ecology >]
Washburne, Alex []
Bourquin, Massimo []
Pramateftaki, Paraskevi []
Kohler, Tyler []
Styllas, Michail []
Tolosano, Matteo []
de Staercke, Vincent []
Schon, Martina []
Brandani, Jade []
Peter, Hannes []
Battin, Tom []
3-Dec-2020
No
[en] Microdiversity, the organization of microorganisms into groups with closely related but ecologically different sub-types, is widespread and represents an important linchpin between microbial ecology and evolution. However, the drivers of microdiversification remain largely unknown. Here we show that selection promotes microdiversity in the microbiome associated with sediments in glacier-fed streams (GFS). Applying a novel phylogenetic framework, we identify several clades that are under homogeneous selection and that contain genera with higher levels of microdiversity than the rest of the genera. Overall these clades constituted ~44% and ~64% of community α-diversity and abundance, and both percentages increased further in GFS that were largely devoid of primary producers. Our findings show that strong homogeneous selection drives the microdiversification of specialized microbial groups putatively underlying their success in the extreme environment of GFS. This microdiversity could be threatened as glaciers shrink, with unknown consequences for microbial diversity and functionality in these ecosystems.
Stream Biofilm and Ecosystems Research
NOMIS Foundation
Vanishing Glaciers
Researchers ; Professionals ; Students ; General public
http://hdl.handle.net/10993/46677
10.1101/2020.12.03.409391
https://www.biorxiv.org/content/10.1101/2020.12.03.409391v1
The copyright holder for this preprint is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. It is made available under a CC-BY-NC-ND 4.0 International license.
https://www.biorxiv.org/content/10.1101/2020.12.03.409391v1

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