Reference : Microdiversity characterizes prevalent phylogenetic clades in the glacier-fed stream ...
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Multidisciplinary, general & others
Microdiversity characterizes prevalent phylogenetic clades in the glacier-fed stream microbiome
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 [> >]
ISME Journal
[en] Biofilms ; Microdiversity ; Microbiome
[en] Glacier-fed streams (GFSs) are extreme and rapidly vanishing ecosystems, and yet they harbor diverse microbial communities. Although our understanding of the GFS microbiome has recently increased, we do not know which microbial clades are ecologically successful in these ecosystems, nor do we understand potentially underlying mechanisms. Ecologically successful clades should be more prevalent across GFSs compared to other clades, which should be reflected as clade-wise distinctly low phylogenetic turnover. However, methods to assess such patterns are currently missing. Here we developed and applied a novel analytical framework, “phyloscore analysis”, to identify clades with lower spatial phylogenetic turnover than other clades in the sediment microbiome across twenty GFSs in New Zealand. These clades constituted up to 44% and 64% of community α-diversity and abundance, respectively. Furthermore, both their α-diversity and abundance increased as sediment chlorophyll a decreased, corroborating their ecological success in GFS habitats largely devoid of primary production. These clades also contained elevated levels of putative microdiversity than others, which could potentially explain their high prevalence in GFSs. This hitherto unknown microdiversity may be threatened as glaciers shrink, urging towards further genomic and functional exploration of the GFS microbiome.
Stream Biofilm and Ecosystems Research
NOMIS Foundation ; SNSF - Switzerland
Vanishing Glaciers
Researchers ; Professionals ; Students ; General public
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