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Study

Study Name: Soil microbial communities from tundra in Enontekio, Finland

Projects

Biosamples

Organisms

Biosamples: 69 Seq. Projects: 69
STUDY INFORMATION
GOLD Study ID Gs0160787
Study Name Soil microbial communities from tundra in Enontekio, Finland
Other Names
NCBI Umbrella Bioproject Name
NCBI Umbrella Bioproject Accession
SRA Studies
SRA Study Id ERP125592  (Link to NCBI )
Study Title In-depth characterization of denitrifier communities across different soil ecosystems in the tundra
Study Abstract In contrast to earlier assumptions, there is now mounting evidence for the role of tundra soils as important sources of the greenhouse gas nitrous oxide (N2O). However, the microorganisms involved in the cycling of N2O in this system remain largely uncharacterized. Since tundra soils are variable sources and sinks of N2O, we aimed at investigating differences in community structure across different soil ecosystems in the tundra. We analysed 1.4 Tb of metagenomic data from soils in northern Finland covering a range of ecosystems from dry upland soils to water-logged fens and obtained 796 manually binned and curated metagenome-assembled genomes (MAGs). We then searched for MAGs harbouring genes involved in denitrification, an important process driving N2O emissions. Communities of potential denitrifiers were dominated by microorganisms with truncated denitrification pathways (i.e., lacking one or more denitrification genes) and differed across soil ecosystems. Upland soils showed a strong N2O sink potential and were dominated by members of the Alphaproteobacteria such as Bradyrhizobium and Reyranella. Fens, which had in general net-zero N2O fluxes, had a high abundance of poorly characterized taxa affiliated with the Chloroflexota lineage Ellin6529 and the Acidobacteriota subdivision Gp23. By coupling an in-depth characterization of microbial communities with in situ measurements of N2O fluxes, our results suggest that the observed spatial patterns of N2O fluxes in the tundra are related to differences in the composition of denitrifier communities.
  
Legacy ER Study ID
Legacy GOLD ID
Added By JGI automated process on 2022-12-14
Last Modified By
PI Unknown
Description The goal of this study is in-depth characterization of denitrifier communities across different soil ecosystems in the tundra
Relevance
Study Information Visibility Public
Metagenomic Study Yes
Publication
Is GEBA
Is HMP
ECOSYSTEM CLASSIFICATION
Ecosystem Environmental
Ecosystem Category Terrestrial
Ecosystem Type Soil
Ecosystem Subtype Tundra
Specific Ecosystem Unclassified
Ecosystem Path ID 5950
STUDY COMPOSITION
Number of Biosamples 69
Number of Organisms 0
Number of Seq Projects 69
Number of Analysis Projects 0
Number of Related Studies 0

 

 

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