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Permafrost microbial communities and functional genes are structured by latitudinal and soil geochemical gradients.
Waldrop, Mark P; Chabot, Christopher L; Liebner, Susanne; Holm, Stine; Snyder, Michael W; Dillon, Megan; Dudgeon, Steven R; Douglas, Thomas A; Leewis, Mary-Cathrine; Walter Anthony, Katey M; McFarland, Jack W; Arp, Christopher D; Bondurant, Allen C; Tas, Neslihan; Mackelprang, Rachel.
Afiliación
  • Waldrop MP; Geology, Minerals, Energy, and Geophysics Science Center, United States Geological Survey, Menlo Park, CA, 94025, USA. mwaldrop@usgs.gov.
  • Chabot CL; California State University Northridge, 18111 Nordhoff St., Northridge, CA, 91330, USA.
  • Liebner S; GFZ German Research Centre for Geosciences, Section Geomicrobiology, 14473, Potsdam, Germany.
  • Holm S; University of Potsdam, Institute of Biochemistry and Biology, 14476, Potsdam, Germany.
  • Snyder MW; GFZ German Research Centre for Geosciences, Section Geomicrobiology, 14473, Potsdam, Germany.
  • Dillon M; California State University Northridge, 18111 Nordhoff St., Northridge, CA, 91330, USA.
  • Dudgeon SR; Earth and Environmental Sciences Area, Lawrence Berkeley National Laboratory, Berkeley, CA, USA.
  • Douglas TA; California State University Northridge, 18111 Nordhoff St., Northridge, CA, 91330, USA.
  • Leewis MC; U.S. Army Cold Regions Research and Engineering Laboratory 9th Avenue, Building 4070 Fort, Wainwright, AK, 99703, USA.
  • Walter Anthony KM; Agriculture and Agri-Food Canada, 2560 Boulevard Hochelaga, Québec, QC, G1V 2J3, Canada.
  • McFarland JW; Water and Environmental Research Center, University Alaska Fairbanks, Fairbanks, AK, 99775, USA.
  • Arp CD; Geology, Minerals, Energy, and Geophysics Science Center, United States Geological Survey, Menlo Park, CA, 94025, USA.
  • Bondurant AC; Water and Environmental Research Center, University Alaska Fairbanks, Fairbanks, AK, 99775, USA.
  • Tas N; Water and Environmental Research Center, University Alaska Fairbanks, Fairbanks, AK, 99775, USA.
  • Mackelprang R; Earth and Environmental Sciences Area, Lawrence Berkeley National Laboratory, Berkeley, CA, USA.
ISME J ; 17(8): 1224-1235, 2023 08.
Article en En | MEDLINE | ID: mdl-37217592
Permafrost underlies approximately one quarter of Northern Hemisphere terrestrial surfaces and contains 25-50% of the global soil carbon (C) pool. Permafrost soils and the C stocks within are vulnerable to ongoing and future projected climate warming. The biogeography of microbial communities inhabiting permafrost has not been examined beyond a small number of sites focused on local-scale variation. Permafrost is different from other soils. Perennially frozen conditions in permafrost dictate that microbial communities do not turn over quickly, thus possibly providing strong linkages to past environments. Thus, the factors structuring the composition and function of microbial communities may differ from patterns observed in other terrestrial environments. Here, we analyzed 133 permafrost metagenomes from North America, Europe, and Asia. Permafrost biodiversity and taxonomic distribution varied in relation to pH, latitude and soil depth. The distribution of genes differed by latitude, soil depth, age, and pH. Genes that were the most highly variable across all sites were associated with energy metabolism and C-assimilation. Specifically, methanogenesis, fermentation, nitrate reduction, and replenishment of citric acid cycle intermediates. This suggests that adaptations to energy acquisition and substrate availability are among some of the strongest selective pressures shaping permafrost microbial communities. The spatial variation in metabolic potential has primed communities for specific biogeochemical processes as soils thaw due to climate change, which could cause regional- to global- scale variation in C and nitrogen processing and greenhouse gas emissions.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Hielos Perennes / Microbiota Idioma: En Revista: ISME J Asunto de la revista: MICROBIOLOGIA / SAUDE AMBIENTAL Año: 2023 Tipo del documento: Article País de afiliación: Estados Unidos Pais de publicación: Reino Unido
Texto completo
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Imprimir
XML
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Hielos Perennes / Microbiota Idioma: En Revista: ISME J Asunto de la revista: MICROBIOLOGIA / SAUDE AMBIENTAL Año: 2023 Tipo del documento: Article País de afiliación: Estados Unidos Pais de publicación: Reino Unido