Active and dormant microorganisms on glacier surfaces
International audience Abstract Glacier and ice sheet surfaces host diverse communities of microorganisms whose activity (or inactivity) influences biogeochemical cycles and ice melting. Supraglacial microbes endure various environmental extremes including resource scarcity, frequent temperature flu...
Published in: | Geobiology |
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Main Authors: | , , , , , , , , , , , |
Other Authors: | , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2022
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Subjects: | |
Online Access: | https://hal.science/hal-04291424 https://hal.science/hal-04291424/document https://hal.science/hal-04291424/file/Geobiology%20-%202022%20-%20Bradley%20-%20Active%20and%20dormant%20microorganisms%20on%20glacier%20surfaces.pdf https://doi.org/10.1111/gbi.12535 |
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ftecolecentrlyon:oai:HAL:hal-04291424v1 |
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openpolar |
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Open Polar |
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Portail HAL - Ecole Centrale de Lyon |
op_collection_id |
ftecolecentrlyon |
language |
English |
topic |
activity dormancy extremophiles glacier ice microorganisms snow [SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology [SDV.MP]Life Sciences [q-bio]/Microbiology and Parasitology |
spellingShingle |
activity dormancy extremophiles glacier ice microorganisms snow [SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology [SDV.MP]Life Sciences [q-bio]/Microbiology and Parasitology Bradley, James, A Trivedi, Christopher, B Winkel, Matthias Mourot, Rey Lutz, Stefanie Larose, Catherine Keuschnig, Christoph Doting, Eva Halbach, Laura Zervas, Athanasios Anesio, Alexandre, M Benning, Liane, G Active and dormant microorganisms on glacier surfaces |
topic_facet |
activity dormancy extremophiles glacier ice microorganisms snow [SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology [SDV.MP]Life Sciences [q-bio]/Microbiology and Parasitology |
description |
International audience Abstract Glacier and ice sheet surfaces host diverse communities of microorganisms whose activity (or inactivity) influences biogeochemical cycles and ice melting. Supraglacial microbes endure various environmental extremes including resource scarcity, frequent temperature fluctuations above and below the freezing point of water, and high UV irradiance during summer followed by months of total darkness during winter. One strategy that enables microbial life to persist through environmental extremes is dormancy, which despite being prevalent among microbial communities in natural settings, has not been directly measured and quantified in glacier surface ecosystems. Here, we use a combination of metabarcoding and metatranscriptomic analyses, as well as cell‐specific activity (BONCAT) incubations to assess the diversity and activity of microbial communities from glacial surfaces in Iceland and Greenland. We also present a new ecological model for glacier microorganisms and simulate physiological state‐changes in the glacial microbial community under idealized (i) freezing, (ii) thawing, and (iii) freeze–thaw conditions. We show that a high proportion (>50%) of bacterial cells are translationally active in‐situ on snow and ice surfaces, with Actinomycetota, Pseudomonadota, and Planctomycetota dominating the total and active community compositions, and that glacier microorganisms, even when frozen, could resume translational activity within 24 h after thawing. Our data suggest that glacial microorganisms respond rapidly to dynamic and changing conditions typical of their natural environment. We deduce that the biology and biogeochemistry of glacier surfaces are shaped by processes occurring over short (i.e., daily) timescales, and thus are susceptible to change following the expected alterations to the melt‐regime of glaciers driven by climate change. A better understanding of the activity of microorganisms on glacier surfaces is critical in addressing the growing concern of climate change ... |
author2 |
Queen Mary University of London (QMUL) German Research Centre for Geosciences - Helmholtz-Centre Potsdam (GFZ) Ampère, Département Bioingénierie (BioIng) Ampère (AMPERE) École Centrale de Lyon (ECL) Université de Lyon-Université de Lyon-Université Claude Bernard Lyon 1 (UCBL) Université de Lyon-Institut National des Sciences Appliquées de Lyon (INSA Lyon) Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-École Centrale de Lyon (ECL) Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) Freie Universität Berlin Aarhus University Aarhus |
format |
Article in Journal/Newspaper |
author |
Bradley, James, A Trivedi, Christopher, B Winkel, Matthias Mourot, Rey Lutz, Stefanie Larose, Catherine Keuschnig, Christoph Doting, Eva Halbach, Laura Zervas, Athanasios Anesio, Alexandre, M Benning, Liane, G |
author_facet |
Bradley, James, A Trivedi, Christopher, B Winkel, Matthias Mourot, Rey Lutz, Stefanie Larose, Catherine Keuschnig, Christoph Doting, Eva Halbach, Laura Zervas, Athanasios Anesio, Alexandre, M Benning, Liane, G |
author_sort |
Bradley, James, A |
title |
Active and dormant microorganisms on glacier surfaces |
title_short |
Active and dormant microorganisms on glacier surfaces |
title_full |
Active and dormant microorganisms on glacier surfaces |
title_fullStr |
Active and dormant microorganisms on glacier surfaces |
title_full_unstemmed |
Active and dormant microorganisms on glacier surfaces |
title_sort |
active and dormant microorganisms on glacier surfaces |
publisher |
HAL CCSD |
publishDate |
2022 |
url |
https://hal.science/hal-04291424 https://hal.science/hal-04291424/document https://hal.science/hal-04291424/file/Geobiology%20-%202022%20-%20Bradley%20-%20Active%20and%20dormant%20microorganisms%20on%20glacier%20surfaces.pdf https://doi.org/10.1111/gbi.12535 |
genre |
glacier glacier Greenland Ice Sheet Iceland |
genre_facet |
glacier glacier Greenland Ice Sheet Iceland |
op_source |
ISSN: 1472-4677 EISSN: 1472-4669 Geobiology https://hal.science/hal-04291424 Geobiology, 2022, 21 (2), pp.244-261. ⟨10.1111/gbi.12535⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1111/gbi.12535 hal-04291424 https://hal.science/hal-04291424 https://hal.science/hal-04291424/document https://hal.science/hal-04291424/file/Geobiology%20-%202022%20-%20Bradley%20-%20Active%20and%20dormant%20microorganisms%20on%20glacier%20surfaces.pdf doi:10.1111/gbi.12535 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1111/gbi.12535 |
container_title |
Geobiology |
container_volume |
21 |
container_issue |
2 |
container_start_page |
244 |
op_container_end_page |
261 |
_version_ |
1796942658676981760 |
spelling |
ftecolecentrlyon:oai:HAL:hal-04291424v1 2024-04-21T08:02:28+00:00 Active and dormant microorganisms on glacier surfaces Bradley, James, A Trivedi, Christopher, B Winkel, Matthias Mourot, Rey Lutz, Stefanie Larose, Catherine Keuschnig, Christoph Doting, Eva Halbach, Laura Zervas, Athanasios Anesio, Alexandre, M Benning, Liane, G Queen Mary University of London (QMUL) German Research Centre for Geosciences - Helmholtz-Centre Potsdam (GFZ) Ampère, Département Bioingénierie (BioIng) Ampère (AMPERE) École Centrale de Lyon (ECL) Université de Lyon-Université de Lyon-Université Claude Bernard Lyon 1 (UCBL) Université de Lyon-Institut National des Sciences Appliquées de Lyon (INSA Lyon) Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-École Centrale de Lyon (ECL) Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) Freie Universität Berlin Aarhus University Aarhus 2022 https://hal.science/hal-04291424 https://hal.science/hal-04291424/document https://hal.science/hal-04291424/file/Geobiology%20-%202022%20-%20Bradley%20-%20Active%20and%20dormant%20microorganisms%20on%20glacier%20surfaces.pdf https://doi.org/10.1111/gbi.12535 en eng HAL CCSD Wiley info:eu-repo/semantics/altIdentifier/doi/10.1111/gbi.12535 hal-04291424 https://hal.science/hal-04291424 https://hal.science/hal-04291424/document https://hal.science/hal-04291424/file/Geobiology%20-%202022%20-%20Bradley%20-%20Active%20and%20dormant%20microorganisms%20on%20glacier%20surfaces.pdf doi:10.1111/gbi.12535 info:eu-repo/semantics/OpenAccess ISSN: 1472-4677 EISSN: 1472-4669 Geobiology https://hal.science/hal-04291424 Geobiology, 2022, 21 (2), pp.244-261. ⟨10.1111/gbi.12535⟩ activity dormancy extremophiles glacier ice microorganisms snow [SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology [SDV.MP]Life Sciences [q-bio]/Microbiology and Parasitology info:eu-repo/semantics/article Journal articles 2022 ftecolecentrlyon https://doi.org/10.1111/gbi.12535 2024-03-25T18:06:43Z International audience Abstract Glacier and ice sheet surfaces host diverse communities of microorganisms whose activity (or inactivity) influences biogeochemical cycles and ice melting. Supraglacial microbes endure various environmental extremes including resource scarcity, frequent temperature fluctuations above and below the freezing point of water, and high UV irradiance during summer followed by months of total darkness during winter. One strategy that enables microbial life to persist through environmental extremes is dormancy, which despite being prevalent among microbial communities in natural settings, has not been directly measured and quantified in glacier surface ecosystems. Here, we use a combination of metabarcoding and metatranscriptomic analyses, as well as cell‐specific activity (BONCAT) incubations to assess the diversity and activity of microbial communities from glacial surfaces in Iceland and Greenland. We also present a new ecological model for glacier microorganisms and simulate physiological state‐changes in the glacial microbial community under idealized (i) freezing, (ii) thawing, and (iii) freeze–thaw conditions. We show that a high proportion (>50%) of bacterial cells are translationally active in‐situ on snow and ice surfaces, with Actinomycetota, Pseudomonadota, and Planctomycetota dominating the total and active community compositions, and that glacier microorganisms, even when frozen, could resume translational activity within 24 h after thawing. Our data suggest that glacial microorganisms respond rapidly to dynamic and changing conditions typical of their natural environment. We deduce that the biology and biogeochemistry of glacier surfaces are shaped by processes occurring over short (i.e., daily) timescales, and thus are susceptible to change following the expected alterations to the melt‐regime of glaciers driven by climate change. A better understanding of the activity of microorganisms on glacier surfaces is critical in addressing the growing concern of climate change ... Article in Journal/Newspaper glacier glacier Greenland Ice Sheet Iceland Portail HAL - Ecole Centrale de Lyon Geobiology 21 2 244 261 |