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Title: Landscape topography structures the soil microbiome in arctic polygonal tundra

Abstract

Global temperature increases are resulting in thaw of permafrost soil in the arctic with increased emission of greenhouse gases (GHGs). Soil microorganisms are responsible for degradation of the trapped organic carbon (C) in permafrost and emission of GHG as it thaws. However, environmental factors governing microbial degradation of soil C and GHG emissions are poorly understood. Here we determined the functional potential of soil microbiomes in arctic tundra across a cryoperturbed polygonal landscape in Barrow, Alaska. Using a combination of metagenome sequencing and gas flux measurements, we found that the soil microbiome composition, diversity and functional potential varied across the polygon transect and that specific microbes and functional genes were correlated to GHG measurements. Several draft genomes of novel species were obtained with genes encoding enzymes involved in cycling of complex organic compounds. These results have larger implications for prediction of the influence of the soil microbiome on soil C flux from arctic regions undergoing environmental change.

Authors:
 [1];  [1]; ORCiD logo [1];  [1];  [1];  [1]; ORCiD logo [2];  [3];  [1];  [4]
  1. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  2. USDOE Joint Genome Institute (JGI), Walnut Creek, CA (United States)
  3. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Univ. of California, Berkeley, CA (United States)
  4. Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Publication Date:
Research Org.:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Biological and Environmental Research (BER) (SC-23)
OSTI Identifier:
1423412
Alternate Identifier(s):
OSTI ID: 1433134
Report Number(s):
PNNL-SA-126595
Journal ID: ISSN 2041-1723
Grant/Contract Number:  
AC05-76RL01830; AC02-05CH11231
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Nature Communications
Additional Journal Information:
Journal Volume: 9; Journal Issue: 1; Journal ID: ISSN 2041-1723
Publisher:
Nature Publishing Group
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; soil microbiome; metagenome; polygonal tundra; greenhouse gas

Citation Formats

Taş, Neslihan, Prestat, Emmanuel, Wang, Shi, Wu, Yuxin, Ulrich, Craig, Kneafsey, Timothy, Tringe, Susannah G., Torn, Margaret S., Hubbard, Susan S., and Jansson, Janet K. Landscape topography structures the soil microbiome in arctic polygonal tundra. United States: N. p., 2018. Web. doi:10.1038/s41467-018-03089-z.
Taş, Neslihan, Prestat, Emmanuel, Wang, Shi, Wu, Yuxin, Ulrich, Craig, Kneafsey, Timothy, Tringe, Susannah G., Torn, Margaret S., Hubbard, Susan S., & Jansson, Janet K. Landscape topography structures the soil microbiome in arctic polygonal tundra. United States. doi:10.1038/s41467-018-03089-z.
Taş, Neslihan, Prestat, Emmanuel, Wang, Shi, Wu, Yuxin, Ulrich, Craig, Kneafsey, Timothy, Tringe, Susannah G., Torn, Margaret S., Hubbard, Susan S., and Jansson, Janet K. Thu . "Landscape topography structures the soil microbiome in arctic polygonal tundra". United States. doi:10.1038/s41467-018-03089-z. https://www.osti.gov/servlets/purl/1423412.
@article{osti_1423412,
title = {Landscape topography structures the soil microbiome in arctic polygonal tundra},
author = {Taş, Neslihan and Prestat, Emmanuel and Wang, Shi and Wu, Yuxin and Ulrich, Craig and Kneafsey, Timothy and Tringe, Susannah G. and Torn, Margaret S. and Hubbard, Susan S. and Jansson, Janet K.},
abstractNote = {Global temperature increases are resulting in thaw of permafrost soil in the arctic with increased emission of greenhouse gases (GHGs). Soil microorganisms are responsible for degradation of the trapped organic carbon (C) in permafrost and emission of GHG as it thaws. However, environmental factors governing microbial degradation of soil C and GHG emissions are poorly understood. Here we determined the functional potential of soil microbiomes in arctic tundra across a cryoperturbed polygonal landscape in Barrow, Alaska. Using a combination of metagenome sequencing and gas flux measurements, we found that the soil microbiome composition, diversity and functional potential varied across the polygon transect and that specific microbes and functional genes were correlated to GHG measurements. Several draft genomes of novel species were obtained with genes encoding enzymes involved in cycling of complex organic compounds. These results have larger implications for prediction of the influence of the soil microbiome on soil C flux from arctic regions undergoing environmental change.},
doi = {10.1038/s41467-018-03089-z},
journal = {Nature Communications},
number = 1,
volume = 9,
place = {United States},
year = {Thu Feb 22 00:00:00 EST 2018},
month = {Thu Feb 22 00:00:00 EST 2018}
}

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Works referenced in this record:

Occurrence, Classification, and Biological Function of Hydrogenases:  An Overview
journal, October 2007

  • Vignais, Paulette M.; Billoud, Bernard
  • Chemical Reviews, Vol. 107, Issue 10, p. 4206-4272
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