Homogeneous selection promotes microdiversity in the glacier-fed stream microbiome
Homogeneous selection promotes microdiversity in the glacier-fed stream microbiome
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.
Bourquin Massimo、Pramateftaki Paraskevi、Fodelianakis Stilianos、Kohler Tyler J.、Styllas Michail、Tolosano Matteo、De Staercke Vincent、Sch?n Martina、Wilmes Paul、Battin Tom J.、Busi Susheel Bhanu、Brandani Jade、Peter Hannes、Washburne Alex D.
Stream Biofilm & Ecosystem Research Lab, ENAC Division, Ecole Polytechnique Federale de LausanneStream Biofilm & Ecosystem Research Lab, ENAC Division, Ecole Polytechnique Federale de LausanneStream Biofilm & Ecosystem Research Lab, ENAC Division, Ecole Polytechnique Federale de LausanneStream Biofilm & Ecosystem Research Lab, ENAC Division, Ecole Polytechnique Federale de LausanneStream Biofilm & Ecosystem Research Lab, ENAC Division, Ecole Polytechnique Federale de LausanneStream Biofilm & Ecosystem Research Lab, ENAC Division, Ecole Polytechnique Federale de LausanneStream Biofilm & Ecosystem Research Lab, ENAC Division, Ecole Polytechnique Federale de LausanneStream Biofilm & Ecosystem Research Lab, ENAC Division, Ecole Polytechnique Federale de LausanneSystems Ecology Research Group, Luxembourg Centre for Systems Biomedicine, University of LuxembourgStream Biofilm & Ecosystem Research Lab, ENAC Division, Ecole Polytechnique Federale de LausanneSystems Ecology Research Group, Luxembourg Centre for Systems Biomedicine, University of LuxembourgStream Biofilm & Ecosystem Research Lab, ENAC Division, Ecole Polytechnique Federale de LausanneStream Biofilm & Ecosystem Research Lab, ENAC Division, Ecole Polytechnique Federale de LausanneDepartment of Microbiology and Immunology, Montana State University||Selva Analytics, LLC, Bozeman
微生物学环境科学理论环境生物学
Bourquin Massimo,Pramateftaki Paraskevi,Fodelianakis Stilianos,Kohler Tyler J.,Styllas Michail,Tolosano Matteo,De Staercke Vincent,Sch?n Martina,Wilmes Paul,Battin Tom J.,Busi Susheel Bhanu,Brandani Jade,Peter Hannes,Washburne Alex D..Homogeneous selection promotes microdiversity in the glacier-fed stream microbiome[EB/OL].(2025-03-28)[2025-06-18].https://www.biorxiv.org/content/10.1101/2020.12.03.409391.点此复制
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