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Title: Peatland Acidobacteria with a dissimilatory sulfur metabolism

Abstract

Sulfur-cycling microorganisms impact organic matter decomposition in wetlands and consequently greenhouse gas emissions from these globally relevant environments. However, their identities and physiological properties are largely unknown. By applying a functional metagenomics approach to an acidic peatland, we recovered draft genomes of seven novel Acidobacteria species with the potential for dissimilatory sulfite (dsrAB, dsrC, dsrD, dsrN, dsrT, dsrMKJOP) or sulfate respiration (sat, aprBA, qmoABC plus dsr genes). Surprisingly, the genomes also encoded DsrL, which so far was only found in sulfur-oxidizing microorganisms. Metatranscriptome analysis demonstrated expression of acidobacterial sulfur-metabolism genes in native peat soil and their upregulation in diverse anoxic microcosms. This indicated an active sulfate respiration pathway, which, however, might also operate in reverse for dissimilatory sulfur oxidation or disproportionation as proposed for the sulfur-oxidizing Desulfurivibrio alkaliphilus. Acidobacteria that only harbored genes for sulfite reduction additionally encoded enzymes that liberate sulfite from organosulfonates, which suggested organic sulfur compounds as complementary energy sources. Further metabolic potentials included polysaccharide hydrolysis and sugar utilization, aerobic respiration, several fermentative capabilities, and hydrogen oxidation. Our findings extend both, the known physiological and genetic properties of Acidobacteria and the known taxonomic diversity of microorganisms with a DsrAB-based sulfur metabolism, and highlight new fundamental niches formore » facultative anaerobic Acidobacteria in wetlands based on exploitation of inorganic and organic sulfur molecules for energy conservation.« less

Authors:
ORCiD logo [1];  [2];  [2];  [2]; ORCiD logo [3];  [2];  [4];  [2]; ORCiD logo [3]; ORCiD logo [2]; ORCiD logo [5]; ORCiD logo [4];  [2];  [2];  [2];  [6]; ORCiD logo [2]
  1. Univ. of Vienna, Vienna (Austria); Univ. of Konstanz, Konstanz (Germany)
  2. Univ. of Vienna, Vienna (Austria)
  3. Aalborg Univ., Aalborg (Denmark)
  4. USDOE Joint Genome Institute (JGI), Walnut Creek, CA (United States)
  5. Univ. of Florida, Davie, FL (United States)
  6. Univ. of Konstanz, Konstanz (Germany); Leibniz Inst. DSMZ, Braunschweig (Germany)
Publication Date:
Research Org.:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States). National Energy Research Scientific Computing Center (NERSC); Univ. of California, Oakland, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Biological and Environmental Research (BER) (SC-23), Biological Systems Science Division (SC-23.2 )
OSTI Identifier:
1543737
Alternate Identifier(s):
OSTI ID: 1646840
Grant/Contract Number:  
AC02-05CH11231
Resource Type:
Accepted Manuscript
Journal Name:
The ISME Journal
Additional Journal Information:
Journal Volume: 12; Journal Issue: 7; Journal ID: ISSN 1751-7362
Publisher:
Nature Publishing Group
Country of Publication:
United States
Language:
English
Subject:
59 BASIC BIOLOGICAL SCIENCES; Environmental Sciences & Ecology; Microbiology

Citation Formats

Hausmann, Bela, Pelikan, Claus, Herbold, Craig W., Köstlbacher, Stephan, Albertsen, Mads, Eichorst, Stephanie A., Glavina del Rio, Tijana, Huemer, Martin, Nielsen, Per H., Rattei, Thomas, Stingl, Ulrich, Tringe, Susannah G., Trojan, Daniela, Wentrup, Cecilia, Woebken, Dagmar, Pester, Michael, and Loy, Alexander. Peatland Acidobacteria with a dissimilatory sulfur metabolism. United States: N. p., 2018. Web. doi:10.1038/s41396-018-0077-1.
Hausmann, Bela, Pelikan, Claus, Herbold, Craig W., Köstlbacher, Stephan, Albertsen, Mads, Eichorst, Stephanie A., Glavina del Rio, Tijana, Huemer, Martin, Nielsen, Per H., Rattei, Thomas, Stingl, Ulrich, Tringe, Susannah G., Trojan, Daniela, Wentrup, Cecilia, Woebken, Dagmar, Pester, Michael, & Loy, Alexander. Peatland Acidobacteria with a dissimilatory sulfur metabolism. United States. https://doi.org/10.1038/s41396-018-0077-1
Hausmann, Bela, Pelikan, Claus, Herbold, Craig W., Köstlbacher, Stephan, Albertsen, Mads, Eichorst, Stephanie A., Glavina del Rio, Tijana, Huemer, Martin, Nielsen, Per H., Rattei, Thomas, Stingl, Ulrich, Tringe, Susannah G., Trojan, Daniela, Wentrup, Cecilia, Woebken, Dagmar, Pester, Michael, and Loy, Alexander. Fri . "Peatland Acidobacteria with a dissimilatory sulfur metabolism". United States. https://doi.org/10.1038/s41396-018-0077-1. https://www.osti.gov/servlets/purl/1543737.
@article{osti_1543737,
title = {Peatland Acidobacteria with a dissimilatory sulfur metabolism},
author = {Hausmann, Bela and Pelikan, Claus and Herbold, Craig W. and Köstlbacher, Stephan and Albertsen, Mads and Eichorst, Stephanie A. and Glavina del Rio, Tijana and Huemer, Martin and Nielsen, Per H. and Rattei, Thomas and Stingl, Ulrich and Tringe, Susannah G. and Trojan, Daniela and Wentrup, Cecilia and Woebken, Dagmar and Pester, Michael and Loy, Alexander},
abstractNote = {Sulfur-cycling microorganisms impact organic matter decomposition in wetlands and consequently greenhouse gas emissions from these globally relevant environments. However, their identities and physiological properties are largely unknown. By applying a functional metagenomics approach to an acidic peatland, we recovered draft genomes of seven novel Acidobacteria species with the potential for dissimilatory sulfite (dsrAB, dsrC, dsrD, dsrN, dsrT, dsrMKJOP) or sulfate respiration (sat, aprBA, qmoABC plus dsr genes). Surprisingly, the genomes also encoded DsrL, which so far was only found in sulfur-oxidizing microorganisms. Metatranscriptome analysis demonstrated expression of acidobacterial sulfur-metabolism genes in native peat soil and their upregulation in diverse anoxic microcosms. This indicated an active sulfate respiration pathway, which, however, might also operate in reverse for dissimilatory sulfur oxidation or disproportionation as proposed for the sulfur-oxidizing Desulfurivibrio alkaliphilus. Acidobacteria that only harbored genes for sulfite reduction additionally encoded enzymes that liberate sulfite from organosulfonates, which suggested organic sulfur compounds as complementary energy sources. Further metabolic potentials included polysaccharide hydrolysis and sugar utilization, aerobic respiration, several fermentative capabilities, and hydrogen oxidation. Our findings extend both, the known physiological and genetic properties of Acidobacteria and the known taxonomic diversity of microorganisms with a DsrAB-based sulfur metabolism, and highlight new fundamental niches for facultative anaerobic Acidobacteria in wetlands based on exploitation of inorganic and organic sulfur molecules for energy conservation.},
doi = {10.1038/s41396-018-0077-1},
journal = {The ISME Journal},
number = 7,
volume = 12,
place = {United States},
year = {Fri Feb 23 00:00:00 EST 2018},
month = {Fri Feb 23 00:00:00 EST 2018}
}

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Thermoanaerobaculum aquaticum gen. nov., sp. nov., the first cultivated member of Acidobacteria subdivision 23, isolated from a hot spring
journal, June 2013

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Pyrinomonas methylaliphatogenes gen. nov., sp. nov., a novel group 4 thermophilic member of the phylum Acidobacteria from geothermal soils
journal, September 2013

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The first representative of the globally widespread subdivision 6 Acidobacteria, Vicinamibacter silvestris gen. nov., sp. nov., isolated from subtropical savannah soil
journal, August 2016

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  • International Journal of Systematic and Evolutionary Microbiology, Vol. 66, Issue 8
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Membrane-bound hydrogenase and sulfur reductase of the hyperthermophilic and acidophilic archaeon Acidianus ambivalens
journal, September 2003

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High unique diversity of sulfate-reducing prokaryotes characterized in a depth gradient in an acidic fen
journal, May 2007


Siro(haem)amide in Allochromatium vinosum and relevance of DsrL and DsrN, a homolog of cobyrinic acid a,c -diamide synthase, for sulphur oxidation
journal, August 2006


Identification of microbial populations driving biopolymer degradation in acidic peatlands by metatranscriptomic analysis
journal, September 2016

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pH Gradient-Induced Heterogeneity of Fe(III)-Reducing Microorganisms in Coal Mining-Associated Lake Sediments
journal, November 2008

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Distinct Anaerobic Bacterial Consumers of Cellobiose-Derived Carbon in Boreal Fens with Different CO 2 /CH 4 Production Ratios
journal, December 2016

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Accelerated Profile HMM Searches
journal, October 2011


A Comparative Genomic Analysis of Energy Metabolism in Sulfate Reducing Bacteria and Archaea
journal, January 2011

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Works referencing / citing this record:

DsrL mediates electron transfer between NADH and rDsrAB in Allochromatium vinosum
journal, December 2019

  • Löffler, Maria; Feldhues, Julia; Venceslau, Sofia S.
  • Environmental Microbiology, Vol. 22, Issue 2
  • DOI: 10.1111/1462-2920.14899

The Active Sulfate-Reducing Microbial Community in Littoral Sediment of Oligotrophic Lake Constance
journal, February 2019


Quantifying population-specific growth in benthic bacterial communities under low oxygen using H218O
journal, February 2019


Beyond the tip of the iceberg; a new view of the diversity of sulfite- and sulfate-reducing microorganisms
journal, May 2018


Glacial Runoff Promotes Deep Burial of Sulfur Cycling-Associated Microorganisms in Marine Sediments
journal, November 2019


The Response of Microbial Communities to Peatland Drainage and Rewetting. A Review
journal, October 2020


Formation of Large Native Sulfur Deposits Does Not Require Molecular Oxygen
text, January 2019