Holland, B.L., Monk, N.A.M. orcid.org/0000-0002-5465-4857, Clayton, R.H. orcid.org/0000-0002-8438-7518 et al. (1 more author) (2025) Implementing a framework of carbon and nitrogen feedback responses into a plant resource allocation model. in silico Plants, 7 (1). diaf004. ISSN 2517-5025
Abstract
Theallocation of resources to roots andshootscangreatlyalter total plant mass. Allocation is thought to be the consequenceof uptake rates, transport rates, and growth rates and the communication between them via signalling mechanisms. Feedbacks that alter resource uptake and use are induced in nature by changes in the internal pools of carbon and nitrogen, but how these function together to define allocation remains unclear. We introduce a framework model of internal feedback responses to changes in plant carbon and nitrogen concentrations. We evaluate how well the model responds to changes in carbon and nitrogen availability by simulating external environmental perturbations that influence the uptake of carbon andnitrogen. Themodelreflects experimental results when looking at the effect of atmospheric CO2 and soil nitrogen concentrations on total plant mass and replicates observed responses to leaf defoliation events. Overall, this shows that a combination of knownsignallingmechanismsaresufficienttoreproduceexperimentallyobservedresponsestoexternalresourceavailability.Modelsimulations highlight key areas of uncertainty where more empirical data are needed. In particular, quantitative data are needed to establish the strengths and rates at which feedback responses to carbon and nitrogen substrate concentrations alter growth and uptake rates.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © The Author(s) 2025. Open Access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited. |
Keywords: | allocation; carbon; feedback; model; nitrogen; plant growth |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Computer Science (Sheffield) The University of Sheffield > Faculty of Science (Sheffield) > School of Biosciences (Sheffield) The University of Sheffield > Faculty of Science (Sheffield) > School of Mathematical and Physical Sciences |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 08 Jul 2025 08:08 |
Last Modified: | 08 Jul 2025 08:08 |
Status: | Published online |
Publisher: | Oxford University Press (OUP) |
Refereed: | Yes |
Identification Number: | 10.1093/insilicoplants/diaf004 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:228866 |