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Witzgall, K.* ; Vidal, A.* ; Schubert, D.I.* ; Höschen, C.* ; Schweizer, S.A.* ; Buegger, F. ; Pouteau, V.* ; Chenu, C.* ; Mueller, C.W.*

Particulate organic matter as a functional soil component for persistent soil organic carbon.

Nat. Commun. 12:4115 (2021)
Verlagsversion DOI PMC
Open Access Gold
Creative Commons Lizenzvertrag
The largest terrestrial organic carbon pool, carbon in soils, is regulated by an intricate connection between plant carbon inputs, microbial activity, and the soil matrix. This is manifested by how microorganisms, the key players in transforming plant-derived carbon into soil organic carbon, are controlled by the physical arrangement of organic and inorganic soil particles. Here we conduct an incubation of isotopically labelled litter to study effects of soil structure on the fate of litter-derived organic matter. While microbial activity and fungal growth is enhanced in the coarser-textured soil, we show that occlusion of organic matter into aggregates and formation of organo-mineral associations occur concurrently on fresh litter surfaces regardless of soil structure. These two mechanisms-the two most prominent processes contributing to the persistence of organic matter-occur directly at plant-soil interfaces, where surfaces of litter constitute a nucleus in the build-up of soil carbon persistence. We extend the notion of plant litter, i.e., particulate organic matter, from solely an easily available and labile carbon substrate, to a functional component at which persistence of soil carbon is directly determined.
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Publikationstyp Artikel: Journalartikel
Dokumenttyp Wissenschaftlicher Artikel
Korrespondenzautor
Schlagwörter State C-13 Nmr; Decomposition; Fungi; Scale; Microorganisms; Community; Abundance; Turnover; Nitrogen
ISSN (print) / ISBN 2041-1723
e-ISSN 2041-1723
Zeitschrift Nature Communications
Quellenangaben Band: 12, Heft: 1, Seiten: , Artikelnummer: 4115 Supplement: ,
Verlag Nature Publishing Group
Verlagsort London
Nichtpatentliteratur Publikationen
Begutachtungsstatus Peer reviewed
Institut(e) Research Unit Environmental Simulation (EUS)
Förderungen Deutsche Forschungsgemeinschaft (German Research Foundation)