Uncovering diversity and abundance patterns of CO2-fixing microorganisms in peatlands
Abstract Microorganisms play a crucial role in the carbon (C) dynamics of peatlands — a major terrestrial C reservoir. Because of their role in C emissions, heterotrophic microorganisms have attracted much attention over the past decades. CO2-fixing microorganisms (CFMs) remained largely overlooked,...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2025-08-01
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| Series: | npj Biodiversity |
| Online Access: | https://doi.org/10.1038/s44185-025-00099-1 |
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| author | Marie Le Geay Kyle Mayers Anna Sytiuk Ellen Dorrepaal Martin Küttim Mariusz Lamentowicz Eeva-Stiina Tuittila Béatrice Lauga Vincent E. J. Jassey |
| author_facet | Marie Le Geay Kyle Mayers Anna Sytiuk Ellen Dorrepaal Martin Küttim Mariusz Lamentowicz Eeva-Stiina Tuittila Béatrice Lauga Vincent E. J. Jassey |
| author_sort | Marie Le Geay |
| collection | DOAJ |
| description | Abstract Microorganisms play a crucial role in the carbon (C) dynamics of peatlands — a major terrestrial C reservoir. Because of their role in C emissions, heterotrophic microorganisms have attracted much attention over the past decades. CO2-fixing microorganisms (CFMs) remained largely overlooked, while they could attenuate C emissions. Here, we use metabarcoding and digital droplet PCR to survey microorganisms that potentially fix CO2 in different peatlands. We demonstrate that CFMs are abundant and diverse in peatlands, with on average 1021 CFMs contributing up to 40% of the total bacterial abundance. Using a joint-species distribution model, we identified a core and a specific CFM microbiome, the latter being influenced by temperature and nutrients. Our findings highlight that ASV richness and community structure were direct drivers of CFM abundance, while environmental parameters were indirect drivers. These results provide the basis for a better understanding of the role of CFMs in peatland C cycle inputs. |
| format | Article |
| id | doaj-art-ba4315bb2df84dfb89f82aeac5659939 |
| institution | DOAJ |
| issn | 2731-4243 |
| language | English |
| publishDate | 2025-08-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | npj Biodiversity |
| spelling | doaj-art-ba4315bb2df84dfb89f82aeac56599392025-08-20T03:05:09ZengNature Portfolionpj Biodiversity2731-42432025-08-014111210.1038/s44185-025-00099-1Uncovering diversity and abundance patterns of CO2-fixing microorganisms in peatlandsMarie Le Geay0Kyle Mayers1Anna Sytiuk2Ellen Dorrepaal3Martin Küttim4Mariusz Lamentowicz5Eeva-Stiina Tuittila6Béatrice Lauga7Vincent E. J. Jassey8Université de Toulouse, Toulouse INP, CNRS, IRD, CRBEMolecular Ecology and Paleogenomics - MEP, NORCE ResearchUniversité de Toulouse, Toulouse INP, CNRS, IRD, CRBEClimate Impacts Research Centre, Department of Ecology and Environmental Science, Umeå UniversityInstitute of Ecology, School of Natural Sciences and Health, Tallinn UniversityClimate Change Ecology Research Unit, Adam Mickiewicz UniversitySchool of Forest Sciences, Joensuu campus, University of Eastern FinlandUniversite de Pau et des Pays de l’Adour, CNRS, IPREMUniversité de Toulouse, Toulouse INP, CNRS, IRD, CRBEAbstract Microorganisms play a crucial role in the carbon (C) dynamics of peatlands — a major terrestrial C reservoir. Because of their role in C emissions, heterotrophic microorganisms have attracted much attention over the past decades. CO2-fixing microorganisms (CFMs) remained largely overlooked, while they could attenuate C emissions. Here, we use metabarcoding and digital droplet PCR to survey microorganisms that potentially fix CO2 in different peatlands. We demonstrate that CFMs are abundant and diverse in peatlands, with on average 1021 CFMs contributing up to 40% of the total bacterial abundance. Using a joint-species distribution model, we identified a core and a specific CFM microbiome, the latter being influenced by temperature and nutrients. Our findings highlight that ASV richness and community structure were direct drivers of CFM abundance, while environmental parameters were indirect drivers. These results provide the basis for a better understanding of the role of CFMs in peatland C cycle inputs.https://doi.org/10.1038/s44185-025-00099-1 |
| spellingShingle | Marie Le Geay Kyle Mayers Anna Sytiuk Ellen Dorrepaal Martin Küttim Mariusz Lamentowicz Eeva-Stiina Tuittila Béatrice Lauga Vincent E. J. Jassey Uncovering diversity and abundance patterns of CO2-fixing microorganisms in peatlands npj Biodiversity |
| title | Uncovering diversity and abundance patterns of CO2-fixing microorganisms in peatlands |
| title_full | Uncovering diversity and abundance patterns of CO2-fixing microorganisms in peatlands |
| title_fullStr | Uncovering diversity and abundance patterns of CO2-fixing microorganisms in peatlands |
| title_full_unstemmed | Uncovering diversity and abundance patterns of CO2-fixing microorganisms in peatlands |
| title_short | Uncovering diversity and abundance patterns of CO2-fixing microorganisms in peatlands |
| title_sort | uncovering diversity and abundance patterns of co2 fixing microorganisms in peatlands |
| url | https://doi.org/10.1038/s44185-025-00099-1 |
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