Microbial polyphenol metabolism is part of the thawing permafrost carbon cycle.
Journal
Nature microbiology
ISSN: 2058-5276
Titre abrégé: Nat Microbiol
Pays: England
ID NLM: 101674869
Informations de publication
Date de publication:
28 May 2024
28 May 2024
Historique:
received:
08
12
2023
accepted:
02
04
2024
medline:
29
5
2024
pubmed:
29
5
2024
entrez:
28
5
2024
Statut:
aheadofprint
Résumé
With rising global temperatures, permafrost carbon stores are vulnerable to microbial degradation. The enzyme latch theory states that polyphenols should accumulate in saturated peatlands due to diminished phenol oxidase activity, inhibiting resident microbes and promoting carbon stabilization. Pairing microbiome and geochemical measurements along a permafrost thaw-induced saturation gradient in Stordalen Mire, a model Arctic peatland, we confirmed a negative relationship between phenol oxidase expression and saturation but failed to support other trends predicted by the enzyme latch. To inventory alternative polyphenol removal strategies, we built CAMPER, a gene annotation tool leveraging polyphenol enzyme knowledge gleaned across microbial ecosystems. Applying CAMPER to genome-resolved metatranscriptomes, we identified genes for diverse polyphenol-active enzymes expressed by various microbial lineages under a range of redox conditions. This shifts the paradigm that polyphenols stabilize carbon in saturated soils and highlights the need to consider both oxic and anoxic polyphenol metabolisms to understand carbon cycling in changing ecosystems.
Identifiants
pubmed: 38806673
doi: 10.1038/s41564-024-01691-0
pii: 10.1038/s41564-024-01691-0
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Subventions
Organisme : National Science Foundation (NSF)
ID : 1912915
Organisme : U.S. Department of Energy (DOE)
ID : DE-SC0019746
Organisme : U.S. Department of Energy (DOE)
ID : DE-SC0023084
Organisme : National Science Foundation (NSF)
ID : 1912915
Organisme : National Science Foundation (NSF)
ID : 2022070
Organisme : Department of Education and Training | Australian Research Council (ARC)
ID : FT210100521
Informations de copyright
© 2024. The Author(s).
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