دورية أكاديمية
Principal role of fungi in soil carbon stabilization during early pedogenesis in the high Arctic.
العنوان: | Principal role of fungi in soil carbon stabilization during early pedogenesis in the high Arctic. |
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المؤلفون: | Trejos-Espeleta JC; Department of Earth and Environmental Sciences, Paleontology and Geobiology, Ludwig-Maximilians-Universität München, Munich, Germany, 80333., Marin-Jaramillo JP; Department of Earth and Environmental Sciences, Paleontology and Geobiology, Ludwig-Maximilians-Universität München, Munich, Germany, 80333., Schmidt SK; Department of Ecology and Evolutionary Biology, University of Colorado, Boulder, CO 80309., Sommers P; Department of Ecology and Evolutionary Biology, University of Colorado, Boulder, CO 80309., Bradley JA; Aix Marseille University, University of Toulon, Centre national de la recherche scientifique (CNRS), Institut de Recherche pour le Développement (IRD), Mediterranean Institute of Oceanography (MIO), Marseille, France 13009.; School of Biological and Behavioural Sciences, Queen Mary University of London, London, United Kingdom, E1 4NS., Orsi WD; Department of Earth and Environmental Sciences, Paleontology and Geobiology, Ludwig-Maximilians-Universität München, Munich, Germany, 80333.; GeoBio-Center, Ludwig-Maximilians-Universität München, Munich, Germany, 80333. |
المصدر: | Proceedings of the National Academy of Sciences of the United States of America [Proc Natl Acad Sci U S A] 2024 Jul 09; Vol. 121 (28), pp. e2402689121. Date of Electronic Publication: 2024 Jul 02. |
نوع المنشور: | Journal Article |
اللغة: | English |
بيانات الدورية: | Publisher: National Academy of Sciences Country of Publication: United States NLM ID: 7505876 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1091-6490 (Electronic) Linking ISSN: 00278424 NLM ISO Abbreviation: Proc Natl Acad Sci U S A Subsets: MEDLINE |
أسماء مطبوعة: | Original Publication: Washington, DC : National Academy of Sciences |
مواضيع طبية MeSH: | Carbon*/metabolism , Soil Microbiology* , Soil*/chemistry , Fungi*/metabolism , Ice Cover*/microbiology, Arctic Regions ; Global Warming ; Amino Acids/metabolism ; Ecosystem |
مستخلص: | Climate warming is causing widespread deglaciation and pioneer soil formation over glacial deposits. Melting glaciers expose rocky terrain and glacial till sediment that is relatively low in biomass, oligotrophic, and depleted in nutrients. Following initial colonization by microorganisms, glacial till sediments accumulate organic carbon and nutrients over time. However, the mechanisms driving soil nutrient stabilization during early pedogenesis after glacial retreat remain unclear. Here, we traced amino acid uptake by microorganisms in recently deglaciated high-Arctic soils and show that fungi play a critical role in the initial stabilization of the assimilated carbon. Pioneer basidiomycete yeasts were among the predominant taxa responsible for carbon assimilation, which were associated with overall high amino acid use efficiency and reduced respiration. In intermediate- and late-stage soils, lichenized ascomycete fungi were prevalent, but bacteria increasingly dominated amino acid assimilation, with substantially decreased fungal:bacterial amino acid assimilation ratios and increased respiration. Together, these findings demonstrate that fungi are important drivers of pedogenesis in high-Arctic ecosystems that are currently subject to widespread deglaciation from global warming. Competing Interests: Competing interests statement:The authors declare no competing interest. |
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معلومات مُعتمدة: | OR 417/7-1 Deutsche Forschungsgemeinschaft (DFG); NE/T010967/1 UKRI | NERC | British Antarctic Survey (BAS) |
فهرسة مساهمة: | Keywords: Arctic soil; carbon cycle; climate change; fungal ecology; polar ecology |
المشرفين على المادة: | 7440-44-0 (Carbon) 0 (Soil) 0 (Amino Acids) |
تواريخ الأحداث: | Date Created: 20240702 Date Completed: 20240702 Latest Revision: 20240719 |
رمز التحديث: | 20240719 |
مُعرف محوري في PubMed: | PMC11252988 |
DOI: | 10.1073/pnas.2402689121 |
PMID: | 38954550 |
قاعدة البيانات: | MEDLINE |
تدمد: | 1091-6490 |
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DOI: | 10.1073/pnas.2402689121 |