Potential sources of microbial colonizers in an initial soil ecosystem after retreat of an alpine glacier

The ISME Journal
Thomas RimeBeat Frey

Abstract

Rapid disintegration of alpine glaciers has led to the formation of new terrain consisting of mineral debris colonized by microorganisms. Despite the importance of microbial pioneers in triggering the formation of terrestrial ecosystems, their sources (endogenous versus exogenous) and identities remain elusive. We used 454-pyrosequencing to characterize the bacterial and fungal communities in endogenous glacier habitats (ice, sub-, supraglacial sediments and glacier stream leaving the glacier forefront) and in atmospheric deposition (snow, rain and aeolian dust). We compared these microbial communities with those occurring in recently deglaciated barren soils before and after snow melt (snow-covered soil and barren soil). Atmospheric bacteria and fungi were dominated by plant-epiphytic organisms and differed from endogenous glacier habitats and soils indicating that atmospheric input of microorganisms is not a major source of microbial pioneers in newly formed soils. We found, however, that bacterial communities in newly exposed soils resembled those of endogenous habitats, which suggests that bacterial pioneers originating from sub- and supraglacial sediments contributed to the colonization of newly exposed soils. Conversely, ...Continue Reading

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Citations

Dec 29, 2016·Molecular Ecology·Martin HartmannBeat Frey
Mar 31, 2017·PloS One·Andrea FranzettiRoberto Ambrosini
Jan 25, 2018·The ISME Journal·Catalina Cuellar-Gempeler, Mathew A Leibold
Jul 22, 2019·Environmental Microbiology·Selma VieiraJörg Overmann
May 29, 2020·FEMS Microbiology Ecology·Corinne Biderre-PetitRaphaël Paris
May 10, 2020·Environmental Microbiology·Karen A CameronCarsten Suhr Jacobsen
Jul 23, 2018·FEMS Microbiology Ecology·Johanna Donhauser, Beat Frey
Jul 25, 2019·Frontiers in Microbiology·Amélie DukundeRolf Daniel
Jun 4, 2019·Frontiers in Microbiology·Magdalene AdamczykBeat Frey
Nov 2, 2019·Nature Communications·A C RischB Moser
Oct 25, 2020·FEMS Microbiology Reviews·Edouard Jurkevitch, Zohar Pasternak
Dec 19, 2020·The Science of the Total Environment·Cezary KabalaMałgorzata Suska-Malawska
Jan 29, 2021·FEMS Microbiology Letters·Álvaro Del MoralAsunción de Los Ríos
Sep 16, 2021·The ISME Journal·Stilianos FodelianakisTom J Battin
Sep 25, 2021·Environmental Microbiology·Keshao LiuTrista J Vick-Majors

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