ArticleThe ISME journal2012
Contrasting denitrifier communities relate to contrasting N2O emission patterns from acidic peat soils in arctic tundra.
Article in The ISME journal, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 55 papers.
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Who cites it
55 citing papers in PubMed, 201 citations in OpenAlex.
- Active layer microbial inocula restore missing functions across thawed permafrost soils.Nature communications · 2026Article
- Anaerobic methane oxidation coupled with denitrification mitigates soil nitrous oxide emissions.Science advances · 2025Article
- Article
- Millimeter-scale niche differentiation of N-cycling microorganisms across the soil-water interface has implications for N2O emissions from wetlands.The ISME journal · 2025Article
- Targeted metagenomics using probe capture detect a larger diversity of nitrogen and methane cycling genes in complex microbial communities than traditional metagenomics.ISME communications · 2025Article
- Efficient enriching high-performance denitrifiers using bio-cathode of microbial fuel cells.iScience · 2024Article
- Sustained bacterial NNature communications · 2024Article
- pH selects for distinct NISME communications · 2024Article
- Synergy and competition during the anaerobic degradation of N-acetylglucosamine in a methane-emitting, subarctic, pH-neutral fen.Frontiers in microbiology · 2024Article
- Thermokarst landscape exhibits large nitrous oxide emissions in Alaska's coastal polygonal tundra.Communications earth & environment · 2024Article
- Hot moment of NThe ISME journal · 2023Article
- Comparative investigation on heterotrophic denitrification driven by different biodegradable polymers for nitrate removal in mariculture wastewater: Organic carbon release, denitrification performance, and microbial community.Frontiers in microbiology · 2023Article
- Nitrate determines the bacterial habitat specialization and impacts microbial functions in a subsurface karst cave.Frontiers in microbiology · 2023Article
- Coupled abiotic-biotic cycling of nitrous oxide in tropical peatlands.Nature ecology & evolution · 2022Article
- Microbial Biogeochemical Cycling of Nitrogen in Arid Ecosystems.Microbiology and molecular biology reviews : MMBR · 2022Review
- In-depth characterization of denitrifier communities across different soil ecosystems in the tundra.Environmental microbiome · 2022Article
- Structure and function of the soil microbiome underlying NNature communications · 2022Article
- Response of NScientific reports · 2022Article
- WIDESPREAD CAPACITY FOR DENITRIFICATION ACROSS A BOREAL FOREST LANDSCAPE.Biogeochemistry · 2022Article
- Effects of Land-Use Type and Flooding on the Soil Microbial Community and Functional Genes in Reservoir Riparian Zones.Microbial ecology · 2022Article
Corrections and comments
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Authors and funding
3 authors at 2 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Cryoturbated peat circles (that is, bare surface soil mixed by frost action; pH 3-4) in the Russian discontinuous permafrost tundra are nitrate-rich 'hotspots' of nitrous oxide (N(2)O) emissions in arctic ecosystems, whereas adjacent unturbated peat areas are not. N(2)O was produced and subsequently consumed at pH 4 in unsupplemented anoxic microcosms with cryoturbated but not in those with unturbated peat soil. Nitrate, nitrite and acetylene stimulated net N(2)O production of both soils in anoxic microcosms, indicating denitrification as the source of N(2)O. Up to 500 and 10 μM nitrate stimulated denitrification in cryoturbated and unturbated peat soils, respectively. Apparent maximal reaction velocities of nitrite-dependent denitrification were 28 and 18 nmol N(2)O g(DW)(-1) h(-1), for cryoturbated and unturbated peat soils, respectively. Barcoded amplicon pyrosequencing of narG, nirK/nirS and nosZ (encoding nitrate, nitrite and N(2)O reductases, respectively) yielded ≈49 000 quality-filtered sequences with an average sequence length of 444 bp. Up to 19 species-level operational taxonomic units were detected per soil and gene, many of which were distantly related to cultured denitrifiers or environmental sequences. Denitrification-associated gene diversity in cryoturbated and in unturbated peat soils differed. Quantitative PCR (inhibition-corrected per DNA extract) revealed higher copy numbers of narG in cryoturbated than in unturbated peat soil. Copy numbers of nirS were up to 1000 × higher than those of nirK in both soils, and nirS nirK(-1) copy number ratios in cryoturbated and unturbated peat soils differed. The collective data indicate that the contrasting N(2)O emission patterns of cryoturbated and unturbated peat soils are associated with contrasting denitrifier communities.
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