Academic Journal
Distinct taxonomic and functional profiles of high Arctic and alpine permafrost-affected soil microbiomes.
| Τίτλος: | Distinct taxonomic and functional profiles of high Arctic and alpine permafrost-affected soil microbiomes. |
|---|---|
| Συγγραφείς: | Sannino, Ciro, Qi, Weihong, Rüthi, Joel, Stierli, Beat, Frey, Beat |
| Πηγή: | Environmental Microbiome; 6/16/2023, Vol. 18 Issue 1, p1-22, 22p |
| Θεματικοί όροι: | Tundras, Mountain soils, Greenhouse gases, Global warming, ATP-binding cassette transporters, Freeze-thaw cycles |
| Γεωγραφικοί όροι: | Arctic regions, Switzerland |
| Περίληψη: | Background: Global warming is affecting all cold environments, including the European Alps and Arctic regions. Here, permafrost may be considered a unique ecosystem harboring a distinct microbiome. The frequent freeze–thaw cycles occurring in permafrost-affected soils, and mainly in the seasonally active top layers, modify microbial communities and consequently ecosystem processes. Although taxonomic responses of the microbiomes in permafrost-affected soils have been widely documented, studies about how the microbial genetic potential, especially pathways involved in C and N cycling, changes between active-layer soils and permafrost soils are rare. Here, we used shotgun metagenomics to analyze the microbial and functional diversity and the metabolic potential of permafrost-affected soil collected from an alpine site (Val Lavirun, Engadin area, Switzerland) and a High Arctic site (Station Nord, Villum Research Station, Greenland). The main goal was to discover the key genes abundant in the active-layer and permafrost soils, with the purpose to highlight the potential role of the functional genes found. Results: We observed differences between the alpine and High Arctic sites in alpha- and beta-diversity, and in EggNOG, CAZy, and NCyc datasets. In the High Arctic site, the metagenome in permafrost soil had an overrepresentation (relative to that in active-layer soil) of genes involved in lipid transport by fatty acid desaturate and ABC transporters, i.e. genes that are useful in preventing microorganisms from freezing by increasing membrane fluidity, and genes involved in cell defense mechanisms. The majority of CAZy and NCyc genes were overrepresented in permafrost soils relative to active-layer soils in both localities, with genes involved in the degradation of carbon substrates and in the degradation of N compounds indicating high microbial activity in permafrost in response to climate warming. Conclusions: Our study on the functional characteristics of permafrost microbiomes underlines the remarkably high functional gene diversity of the High Arctic and temperate mountain permafrost, including a broad range of C- and N-cycling genes, and multiple survival and energetic metabolisms. Their metabolic versatility in using organic materials from ancient soils undergoing microbial degradation determine organic matter decomposition and greenhouse gas emissions upon permafrost thawing. Attention to their functional genes is therefore essential to predict potential soil-climate feedbacks to the future warmer climate. [ABSTRACT FROM AUTHOR] |
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| Βάση Δεδομένων: | Complementary Index |
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| Items | – Name: Title Label: Title Group: Ti Data: Distinct taxonomic and functional profiles of high Arctic and alpine permafrost-affected soil microbiomes. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Sannino%2C+Ciro%22">Sannino, Ciro</searchLink><br /><searchLink fieldCode="AR" term="%22Qi%2C+Weihong%22">Qi, Weihong</searchLink><br /><searchLink fieldCode="AR" term="%22Rüthi%2C+Joel%22">Rüthi, Joel</searchLink><br /><searchLink fieldCode="AR" term="%22Stierli%2C+Beat%22">Stierli, Beat</searchLink><br /><searchLink fieldCode="AR" term="%22Frey%2C+Beat%22">Frey, Beat</searchLink> – Name: TitleSource Label: Source Group: Src Data: Environmental Microbiome; 6/16/2023, Vol. 18 Issue 1, p1-22, 22p – Name: Subject Label: Subject Terms Group: Su Data: <searchLink fieldCode="DE" term="%22Tundras%22">Tundras</searchLink><br /><searchLink fieldCode="DE" term="%22Mountain+soils%22">Mountain soils</searchLink><br /><searchLink fieldCode="DE" term="%22Greenhouse+gases%22">Greenhouse gases</searchLink><br /><searchLink fieldCode="DE" term="%22Global+warming%22">Global warming</searchLink><br /><searchLink fieldCode="DE" term="%22ATP-binding+cassette+transporters%22">ATP-binding cassette transporters</searchLink><br /><searchLink fieldCode="DE" term="%22Freeze-thaw+cycles%22">Freeze-thaw cycles</searchLink> – Name: SubjectGeographic Label: Geographic Terms Group: Su Data: <searchLink fieldCode="DE" term="%22Arctic+regions%22">Arctic regions</searchLink><br /><searchLink fieldCode="DE" term="%22Switzerland%22">Switzerland</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Background: Global warming is affecting all cold environments, including the European Alps and Arctic regions. Here, permafrost may be considered a unique ecosystem harboring a distinct microbiome. The frequent freeze–thaw cycles occurring in permafrost-affected soils, and mainly in the seasonally active top layers, modify microbial communities and consequently ecosystem processes. Although taxonomic responses of the microbiomes in permafrost-affected soils have been widely documented, studies about how the microbial genetic potential, especially pathways involved in C and N cycling, changes between active-layer soils and permafrost soils are rare. Here, we used shotgun metagenomics to analyze the microbial and functional diversity and the metabolic potential of permafrost-affected soil collected from an alpine site (Val Lavirun, Engadin area, Switzerland) and a High Arctic site (Station Nord, Villum Research Station, Greenland). The main goal was to discover the key genes abundant in the active-layer and permafrost soils, with the purpose to highlight the potential role of the functional genes found. Results: We observed differences between the alpine and High Arctic sites in alpha- and beta-diversity, and in EggNOG, CAZy, and NCyc datasets. In the High Arctic site, the metagenome in permafrost soil had an overrepresentation (relative to that in active-layer soil) of genes involved in lipid transport by fatty acid desaturate and ABC transporters, i.e. genes that are useful in preventing microorganisms from freezing by increasing membrane fluidity, and genes involved in cell defense mechanisms. The majority of CAZy and NCyc genes were overrepresented in permafrost soils relative to active-layer soils in both localities, with genes involved in the degradation of carbon substrates and in the degradation of N compounds indicating high microbial activity in permafrost in response to climate warming. Conclusions: Our study on the functional characteristics of permafrost microbiomes underlines the remarkably high functional gene diversity of the High Arctic and temperate mountain permafrost, including a broad range of C- and N-cycling genes, and multiple survival and energetic metabolisms. Their metabolic versatility in using organic materials from ancient soils undergoing microbial degradation determine organic matter decomposition and greenhouse gas emissions upon permafrost thawing. Attention to their functional genes is therefore essential to predict potential soil-climate feedbacks to the future warmer climate. [ABSTRACT FROM AUTHOR] – Name: Abstract Label: Group: Ab Data: <i>Copyright of Environmental Microbiome is the property of BioMed Central and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1186/s40793-023-00509-6 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 22 StartPage: 1 Subjects: – SubjectFull: Arctic regions Type: general – SubjectFull: Switzerland Type: general – SubjectFull: Tundras Type: general – SubjectFull: Mountain soils Type: general – SubjectFull: Greenhouse gases Type: general – SubjectFull: Global warming Type: general – SubjectFull: ATP-binding cassette transporters Type: general – SubjectFull: Freeze-thaw cycles Type: general Titles: – TitleFull: Distinct taxonomic and functional profiles of high Arctic and alpine permafrost-affected soil microbiomes. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Sannino, Ciro – PersonEntity: Name: NameFull: Qi, Weihong – PersonEntity: Name: NameFull: Rüthi, Joel – PersonEntity: Name: NameFull: Stierli, Beat – PersonEntity: Name: NameFull: Frey, Beat IsPartOfRelationships: – BibEntity: Dates: – D: 16 M: 06 Text: 6/16/2023 Type: published Y: 2023 Identifiers: – Type: issn-print Value: 25246372 Numbering: – Type: volume Value: 18 – Type: issue Value: 1 Titles: – TitleFull: Environmental Microbiome Type: main |
| ResultId | 1 |