TY - JOUR
T1 - Adding labile carbon to peatland soils triggers deep carbon breakdown
AU - Rajakaruna, Sumudu
AU - Makke, Ghiwa
AU - Grachet, Nathalia Graf
AU - Ayala-Ortiz, Christian
AU - Bouranis, John
AU - Hoyt, David W.
AU - Toyoda, Jason
AU - Denis, Elizabeth H.
AU - Moran, James J.
AU - Song, Tianze
AU - Sun, Xiaoxu
AU - Eder, Elizabeth K.
AU - Wong, Allison R.
AU - Chu, Rosalie
AU - Heyman, Heino
AU - Kolton, Max
AU - Chanton, Jeffrey P.
AU - Wilson, Rachel M.
AU - Kostka, Joel
AU - Tfaily, Malak M.
N1 - Publisher Copyright:
© The Author(s) 2024.
PY - 2024/12
Y1 - 2024/12
N2 - 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.
AB - 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.
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U2 - 10.1038/s43247-024-01954-y
DO - 10.1038/s43247-024-01954-y
M3 - Article
AN - SCOPUS:85213248940
SN - 2662-4435
VL - 5
JO - Communications Earth and Environment
JF - Communications Earth and Environment
IS - 1
M1 - 792
ER -