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Title: The environmental controls that govern the end product of bacterial nitrate respiration

Journal Article · · Science
 [1];  [2];  [3];  [4];  [1];  [3];  [5];  [6]
  1. Max Planck Inst. for Marine Microbiology, Bremen (Germany)
  2. Max Planck Inst. for Marine Microbiology, Bremen (Germany); Univ. of Bielefeld (Germany). Inst. for Genome Research and Systems Biology. Center for Biotechnology
  3. Univ. of Tennessee, Knoxville, TN (United States). UT-ORNL Graduate School of Genome Science and Technology; Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Chemical Science Division
  4. Univ. of North Carolina, Charlotte, NC (United States). Dept. of Biological Sciences; Xiamen Univ. (China). State Key Lab. of Marine Environmental Science
  5. Max Planck Inst. for Marine Microbiology, Bremen (Germany); NIOZ Royal Netherlands Inst. for Sea Research, Yerseke (Netherlands)
  6. Max Planck Inst. for Marine Microbiology, Bremen (Germany); Univ. of Bielefeld (Germany). Inst. for Genome Research and Systems Biology. Center for Biotechnology; Univ. of Calgary, AB (Canada). Dept. of Geoscience

In the biogeochemical nitrogen cycle, microbial respiration processes compete for nitrate as an electron acceptor. Denitrification converts nitrate into nitrogenous gas and thus removes fixed nitrogen from the biosphere, whereas ammonification converts nitrate into ammonium, which is directly reusable by primary producers. In this paper, we combined multiple parallel long-term incubations of marine microbial nitrate-respiring communities with isotope labeling and metagenomics to unravel how specific environmental conditions select for either process. Microbial generation time, supply of nitrite relative to nitrate, and the carbon/nitrogen ratio were identified as key environmental controls that determine whether nitrite will be reduced to nitrogenous gas or ammonium. Finally, our results define the microbial ecophysiology of a biogeochemical feedback loop that is key to global change, eutrophication, and wastewater treatment.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE
Contributing Organization:
Max Planck Inst. for Marine Microbiology, Bremen (Germany); Univ. of Tennessee, Knoxville, TN (United States)
OSTI ID:
1286720
Journal Information:
Science, Vol. 345, Issue 6197; ISSN 0036-8075
Publisher:
AAASCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 312 works
Citation information provided by
Web of Science

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Microbial nitrogen processing in hard clam ( Mercenaria mercenaria ) aquaculture sediments: the relative importance of denitrification and dissimilatory nitrate reduction to ammonium (DNRA): Nitrogen cycling in clam aquaculture sediment journal June 2016
Denitrification and DNRA at the Baltic Sea oxic-anoxic interface: Substrate spectrum and kinetics: Denitrification and DNRA at the oxic-anoxic interface journal July 2016
Microbial Community Responses to Contaminants and the Use of Molecular Techniques book January 2017
Evidence for complete nitrification in enrichment culture of tidal sediments and diversity analysis of clade a comammox Nitrospira in natural environments journal August 2018
Dissimilatory nitrate reduction to ammonium and N2O flux: effect of soil redox potential and N fertilization in loblolly pine forests journal March 2016
Pathways and controls of N2O production in greenhouse vegetable production soils journal February 2019
Development of denitrification in semi-automated moving bed biofilm reactors operated in a marine recirculating aquaculture system journal June 2019
Exotic Spartina alterniflora invasion alters soil nitrous oxide emission dynamics in a coastal wetland of China journal July 2019
High-throughput sequence analysis of bacterial communities in commercial biofertiliser products marketed in South Africa: an independent snapshot quality assessment journal February 2019
Denitrification versus respiratory ammonification: environmental controls of two competing dissimilatory NO3−/NO2− reduction pathways in Shewanella loihica strain PV-4 journal October 2014
Enrichment of DNRA bacteria in a continuous culture journal April 2015
Metabolic and spatio-taxonomic response of uncultivated seafloor bacteria following the Deepwater Horizon oil spill journal August 2017
The microbial nitrogen-cycling network journal February 2018
Stable aerobic and anaerobic coexistence in anoxic marine zones journal October 2019
Increasing oxygen deficiency changes rare and moderately abundant bacterial communities in coastal soft sediments journal November 2019
Expanded metabolic versatility of ubiquitous nitrite-oxidizing bacteria from the genus Nitrospira journal August 2015
Ecological and physiological implications of nitrogen oxide reduction pathways on greenhouse gas emissions in agroecosystems journal May 2019
Organization of biogeochemical nitrogen pathways with switch-like adjustment in fluctuating soil redox conditions journal January 2017
Microbial Nitrogen Metabolism in Chloraminated Drinking Water Reservoirs posted_content June 2019
Physiological characterization of anaerobic ammonium oxidizing bacterium ‘ C andidatus  Jettenia caeni’ : Physiology of ‘ journal December 2014
Methane oxidation coupled to nitrate reduction under hypoxia by the Gammaproteobacterium M ethylomonas denitrificans , sp. nov. type strain FJG1 : Denitrifying metabolism in journal March 2015
Metagenomic analysis of anammox communities in three different microbial aggregates: Metagenomic analysis of anammox communities journal January 2016
Microbial pathways for nitrogen loss in an upland soil: Microbial pathways for nitrogen loss journal April 2018
Using meta‐omics of contaminated sediments to monitor changes in pathways relevant to climate regulation journal December 2018
Vertical and seasonal distribution of picoplankton and functional nitrogen genes in a high-altitude warm-monomictic tropical lake journal April 2017
Nitrite Control over Dissimilatory Nitrate/Nitrite Reduction Pathways in Shewanella loihica Strain PV-4 journal March 2015
Unexpected Diversity and High Abundance of Putative Nitric Oxide Dismutase (Nod) Genes in Contaminated Aquifers and Wastewater Treatment Systems journal December 2016
Filamentous Giant Beggiatoaceae from the Guaymas Basin Are Capable of both Denitrification and Dissimilatory Nitrate Reduction to Ammonium journal May 2018
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Denitrification characterization of dissolved oxygen microprofiles in lake surface sediment through analyzing abundance, expression, community composition and enzymatic activities of denitrifier functional genes journal August 2019
The rates and players of denitrification, dissimilatory nitrate reduction to ammonia (DNRA) and anaerobic ammonia oxidation (anammox) in mangrove soils journal October 2018
Processes and Microorganisms Involved in the Marine Nitrogen Cycle: Knowledge and Gaps journal November 2019
Nitrate ammonification in mangrove soils: a hidden source of nitrite? journal March 2015
Seasonal variation in denitrification and dissimilatory nitrate reduction to ammonia process rates and corresponding key functional genes along an estuarine nitrate gradient journal June 2015
Fermentative Bacteria Influence the Competition between Denitrifiers and DNRA Bacteria journal September 2017
Copepod-Associated Gammaproteobacteria Respire Nitrate in the Open Ocean Surface Layers journal October 2018
Resource Concentration Modulates the Fate of Dissimilated Nitrogen in a Dual-Pathway Actinobacterium journal January 2019
Nitrogen Fertilization Reduces the Capacity of Soils to Take up Atmospheric Carbonyl Sulphide journal November 2018
Denitrification-Potential Evaluation and Nitrate-Removal-Pathway Analysis of Aerobic Denitrifier Strain Marinobacter hydrocarbonoclasticus RAD-2 journal September 2018
Direct O2 control on the partitioning between denitrification and dissimilatory nitrate reduction to ammonium in lake sediments journal January 2019
Elucidating the Competition between Heterotrophic Denitrification and DNRA Using the Resource-Ratio Theory journal October 2020
Direct O2 control on the partitioning between denitrification and dissimilatory nitrate reduction to ammonium in lake sediments journal July 2019
Tidal pumping facilitates dissimilatory nitrate reduction in intertidal marshes journal February 2016
Freshwater copepod carcasses as pelagic microsites of dissimilatory nitrate reduction to ammonium journal July 2018
Genetic and Environmental Controls on Nitrous Oxide Accumulation in Lakes journal March 2015
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Model-based quantification of metabolic interactions from dynamic microbial-community data journal March 2017
Filamentous giant Beggiatoaceae from the Guaymas Basin are capable of both denitrification and dissimilatory nitrate reduction to ammonium text January 2018
Systems modeling approaches for microbial community studies: from metagenomics to inference of the community structure journal March 2015
DNRA and Denitrification Coexist over a Broad Range of Acetate/N-NO3− Ratios, in a Chemostat Enrichment Culture journal November 2016
Enhancing Nitrate Removal from Freshwater Pond by Regulating Carbon/Nitrogen Ratio journal September 2017
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