Non-mycorrhizal root-associated fungi increase soil C stocks and stability via diverse mechanisms
Abstract 13 C labelling. After harvest, we quantified C storage potential by measuring pools of different origin (plant vs. soil) and different stability with long-term soil incubations and size/density fractionation. We assessed plant and microbial community responses as well as fungal physiological and morphological traits in a parallel in vitro study. While inoculation with 3 of the 12 isolates resulted in significant total soil C increases, soil C stability improved under inoculation with most isolates – as a result of increases in resistant C pools and decreases in labile pools and respired C. Further, these increases in soil C stability were positively associated with various fungal traits and plant growth responses, including greater fungal hyphal density and plant biomass, indicating multiple direct and indirect mechanisms for fungal impacts on soil C storage. We found more evidence for metabolic inhibition of microbial decomposition than for physical limitation under the fungal treatments. Our study provides the first direct experimental evidence in plant–soil systems that inoculation with specific non-mycorrhizal fungal strains can improve soil C storage, primarily by stabilising existing C. By identifying specific fungi and traits that hold promise for enhancing soil C storage, our study highlights the potential of non-mycorrhizal fungi in C sequestration and the need to study the mechanisms underpinning it.
- Standort
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Deutsche Nationalbibliothek Frankfurt am Main
- Umfang
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Online-Ressource
- Sprache
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Englisch
- Erschienen in
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Non-mycorrhizal root-associated fungi increase soil C stocks and stability via diverse mechanisms ; volume:21 ; number:4 ; year:2024 ; pages:1037-1059 ; extent:23
Biogeosciences ; 21, Heft 4 (2024), 1037-1059 (gesamt 23)
- Urheber
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Stuart, Emiko K.
Castañeda-Gómez, Laura
Buss, Wolfram
Powell, Jeff R.
Carrillo, Yolima
- DOI
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10.5194/bg-21-1037-2024
- URN
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urn:nbn:de:101:1-2024030703253405492788
- Rechteinformation
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Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
- Letzte Aktualisierung
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14.08.2025, 10:59 MESZ
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Beteiligte
- Stuart, Emiko K.
- Castañeda-Gómez, Laura
- Buss, Wolfram
- Powell, Jeff R.
- Carrillo, Yolima
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