Adding labile carbon to peatland soils triggers deep carbon breakdown
Abstract Peatlands store vast amounts of carbon, with deep peat carbon remaining stable due to limited thermodynamic energy and transport. However, climate change-induced increases in labile carbon inputs could destabilize these stores. Here, we combined DNA stable isotope probing with stable isotop...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2024-12-01
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| Series: | Communications Earth & Environment |
| Online Access: | https://doi.org/10.1038/s43247-024-01954-y |
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| author | Sumudu Rajakaruna Ghiwa Makke Nathalia Graf Grachet Christian Ayala-Ortiz John Bouranis David W. Hoyt Jason Toyoda Elizabeth H. Denis James J. Moran Tianze Song Xiaoxu Sun Elizabeth K. Eder Allison R. Wong Rosalie Chu Heino Heyman Max Kolton Jeffrey P. Chanton Rachel M. Wilson Joel Kostka Malak M. Tfaily |
| author_facet | Sumudu Rajakaruna Ghiwa Makke Nathalia Graf Grachet Christian Ayala-Ortiz John Bouranis David W. Hoyt Jason Toyoda Elizabeth H. Denis James J. Moran Tianze Song Xiaoxu Sun Elizabeth K. Eder Allison R. Wong Rosalie Chu Heino Heyman Max Kolton Jeffrey P. Chanton Rachel M. Wilson Joel Kostka Malak M. Tfaily |
| author_sort | Sumudu Rajakaruna |
| collection | DOAJ |
| description | Abstract Peatlands store vast amounts of carbon, with deep peat carbon remaining stable due to limited thermodynamic energy and transport. However, climate change-induced increases in labile carbon inputs could destabilize these stores. Here, we combined DNA stable isotope probing with stable isotope-assisted metabolomics employing a multi-platform approach to investigate microbial dynamics driving deep peat carbon degradation upon labile carbon (e.g., glucose) amendment. Our findings highlight the vulnerability of deep peat carbon, as glucose addition triggers the breakdown of older organic matter. By uniquely integrating these techniques, we identified active glucose metabolizers to specific microbial populations and mapped carbon flow through microbial networks, elucidating their role in priming recalcitrant carbon mineralization. This multi-omics approach offers crucial insights into how changing resources reshape the peatland microbiome, enhancing our understanding of deep carbon processing, and refining model parameterization to predict microbial responses and carbon cycle feedbacks under global change pressures. |
| format | Article |
| id | doaj-art-db05aacdbc1f4211a4aabbd43924b07a |
| institution | DOAJ |
| issn | 2662-4435 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Communications Earth & Environment |
| spelling | doaj-art-db05aacdbc1f4211a4aabbd43924b07a2025-08-20T02:43:27ZengNature PortfolioCommunications Earth & Environment2662-44352024-12-015111410.1038/s43247-024-01954-yAdding labile carbon to peatland soils triggers deep carbon breakdownSumudu Rajakaruna0Ghiwa Makke1Nathalia Graf Grachet2Christian Ayala-Ortiz3John Bouranis4David W. Hoyt5Jason Toyoda6Elizabeth H. Denis7James J. Moran8Tianze Song9Xiaoxu Sun10Elizabeth K. Eder11Allison R. Wong12Rosalie Chu13Heino Heyman14Max Kolton15Jeffrey P. Chanton16Rachel M. Wilson17Joel Kostka18Malak M. Tfaily19Department of Environmental Science, University of ArizonaDepartment of Environmental Science, University of ArizonaDepartment of Environmental Science, University of ArizonaDepartment of Environmental Science, University of ArizonaDepartment of Environmental Science, University of ArizonaPacific Northwest National LaboratoryPacific Northwest National LaboratoryPacific Northwest National LaboratoryPacific Northwest National LaboratorySchool of Biological Sciences, Georgia Institute of TechnologySchool of Biological Sciences, Georgia Institute of TechnologyPacific Northwest National LaboratoryPacific Northwest National LaboratoryPacific Northwest National LaboratoryPacific Northwest National LaboratoryThe Jacob Blaustein Institutes for Desert Research, Ben-Gurion University of the NegevDepartment of Earth, Ocean & Atmospheric Science, Florida State UniversityDepartment of Earth, Ocean & Atmospheric Science, Florida State UniversitySchool of Biological Sciences, Georgia Institute of TechnologyDepartment of Environmental Science, University of ArizonaAbstract Peatlands store vast amounts of carbon, with deep peat carbon remaining stable due to limited thermodynamic energy and transport. However, climate change-induced increases in labile carbon inputs could destabilize these stores. Here, we combined DNA stable isotope probing with stable isotope-assisted metabolomics employing a multi-platform approach to investigate microbial dynamics driving deep peat carbon degradation upon labile carbon (e.g., glucose) amendment. Our findings highlight the vulnerability of deep peat carbon, as glucose addition triggers the breakdown of older organic matter. By uniquely integrating these techniques, we identified active glucose metabolizers to specific microbial populations and mapped carbon flow through microbial networks, elucidating their role in priming recalcitrant carbon mineralization. This multi-omics approach offers crucial insights into how changing resources reshape the peatland microbiome, enhancing our understanding of deep carbon processing, and refining model parameterization to predict microbial responses and carbon cycle feedbacks under global change pressures.https://doi.org/10.1038/s43247-024-01954-y |
| spellingShingle | Sumudu Rajakaruna Ghiwa Makke Nathalia Graf Grachet Christian Ayala-Ortiz John Bouranis David W. Hoyt Jason Toyoda Elizabeth H. Denis James J. Moran Tianze Song Xiaoxu Sun Elizabeth K. Eder Allison R. Wong Rosalie Chu Heino Heyman Max Kolton Jeffrey P. Chanton Rachel M. Wilson Joel Kostka Malak M. Tfaily Adding labile carbon to peatland soils triggers deep carbon breakdown Communications Earth & Environment |
| title | Adding labile carbon to peatland soils triggers deep carbon breakdown |
| title_full | Adding labile carbon to peatland soils triggers deep carbon breakdown |
| title_fullStr | Adding labile carbon to peatland soils triggers deep carbon breakdown |
| title_full_unstemmed | Adding labile carbon to peatland soils triggers deep carbon breakdown |
| title_short | Adding labile carbon to peatland soils triggers deep carbon breakdown |
| title_sort | adding labile carbon to peatland soils triggers deep carbon breakdown |
| url | https://doi.org/10.1038/s43247-024-01954-y |
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