Magkourilou, E., Durant, E., Bell, C. et al. (3 more authors) (2024) Plant pests influence the movement of plant-fixed carbon and fungal-acquired nutrients through arbuscular mycorrhizal networks. Functional Ecology. ISSN 0269-8463
Abstract
1. Plants typically interact with multiple, co-occurring symbionts, including arbuscular mycorrhizal (AM) fungi which can form networks, connecting neighbouring plants. A characteristic aspect of the mycorrhizal symbiosis is the bidirectional exchange of nutrients between host plants and fungal partners. Concurrent interactions with competing organisms such as aphids or potato cyst nematodes (PCN) can disrupt the carbon-for-nutrient exchange between plants and AM fungi. However, the role of mycorrhizal networks (MNs) in mediating these interactions remains unclear.
2. Using isotope tracing in multi-plant experimental systems, we investigated the movement of plant photosynthates and fungal-acquired soil phosphorus through MNs and the interactive effects of PCN infection on this.
3. We found evidence of preferential allocation of fungal-acquired phosphorus to plants that were not infected by PCN compared with infected neighbours. Contrary to previous findings using single plants, we did not detect a PCN-induced reduction in the amounts of plant carbon delivered to AM fungi in multi-plant systems. However, the MN(s) moved plant-fixed carbon away from PCN-infected host plants, regardless of the PCN infection status of the neighbouring plant host.
4. Our work highlights the responsiveness of MNs to interactions with below-ground organisms. It also strengthens the argument for a more mycocentric view of AM–plant symbioses. Experimental designs of increasing ecological complexity are needed for a more comprehensive understanding of the carbon-for-nutrient dynamics in AM fungi–plant networks. This will, in turn, elucidate the role of AM fungi in terrestrial carbon cycling and their function in agricultural systems.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2024 The Author(s). Functional Ecology published by John Wiley & Sons Ltd on behalf of British Ecological Society. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. http://creativecommons.org/licenses/by/4.0/ |
Keywords: | arbuscular mycorrhizal fungi; biological markets; carbon-for-nutrient exchange; mycorrhizal networks; potato cyst nematode; soil carbon; symbiosis |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Science (Sheffield) > School of Biosciences (Sheffield) |
Funding Information: | Funder Grant number European Research Council 865225 Leverhulme Trust UNSPECIFIED Biotechnology and Biological Sciences Research Council 2594265 Natural Environment Research Council 2741900 |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 13 Nov 2024 15:47 |
Last Modified: | 13 Nov 2024 15:47 |
Status: | Published online |
Publisher: | Wiley |
Refereed: | Yes |
Identification Number: | 10.1111/1365-2435.14693 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:219534 |