A functional–structural plant model that simulates whole- canopy gas exchange of grapevine plants (Vitis vinifera L.) under different training systems
Background and Aims: Scaling from single-leaf to whole-canopy photosynthesis faces several complexities related to variations in light interception and leaf properties. To evaluate the impact of canopy strucuture on gas exchange, we developed a functional–structural plant model to upscale leaf proce...
| Main Authors: | , , , , , |
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| Format: | info:ar-repo/semantics/artículo |
| Language: | Inglés |
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Oxford University Press
2020
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| Online Access: | http://hdl.handle.net/20.500.12123/8216 https://academic.oup.com/aob/article/126/4/647/5677523 https://doi.org/10.1093/aob/mcz203 |
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| author | Prieto, Jorge Alejandro Louarn, Gaëtan Perez Peña, Jorge Esteban Ojeda, Hernan Simonneau, Thierry Lebon, Eric |
| author_browse | Lebon, Eric Louarn, Gaëtan Ojeda, Hernan Perez Peña, Jorge Esteban Prieto, Jorge Alejandro Simonneau, Thierry |
| author_facet | Prieto, Jorge Alejandro Louarn, Gaëtan Perez Peña, Jorge Esteban Ojeda, Hernan Simonneau, Thierry Lebon, Eric |
| author_sort | Prieto, Jorge Alejandro |
| collection | INTA Digital |
| description | Background and Aims: Scaling from single-leaf to whole-canopy photosynthesis faces several complexities related to variations in light interception and leaf properties. To evaluate the impact of canopy strucuture on gas exchange, we developed a functional–structural plant model to upscale leaf processes to the whole canopy based on leaf N content. The model integrates different models that calculate intercepted radiation, leaf traits and gas exchange for each leaf in the canopy. Our main objectives were (1) to introduce the gas exchange model developed at the plant level by integrating the leaf-level responses related to canopy structure, (2) to test the model against an independent canopy gas exchange dataset recorded on different plant architectures, and (3) to quantify the impact of intra-canopy N distribution on crop photosynthesis.
Methods: The model combined a 3D reconstruction of grapevine (Vitis vinifera) canopy architecture, a light interception model, and a coupled photosynthesis and stomatal conductance model that considers light-driven variations in N distribution. A portable chamber device was constructed to measure whole-plant gas exchange to validate the model outputs with data collected on different training systems. Finally, a sensitivity analysis was performed to evaluate the impact on C assimilation of different N content distributions within the canopy.
Key Results: By considering a non-uniform leaf N distribution within the canopy, our model accurately reproduced the daily pattern of gas exchange of different canopy architectures. The gain in photosynthesis permitted by the non-uniform compared with a theoretical uniform N distribution was about 18 %, thereby contributing to the maximization of C assimilation. By contrast, considering a maximal N content for all leaves in the canopy overestimated net CO2 exchange by 28 % when compared with the non-uniform distribution.
Conclusions: The model reproduced the gas exchange of plants under different training systems with a low error (10 %). It appears to be a reliable tool to evaluate the impact of a grapevine training system on water use efficiency at the plant level. |
| format | info:ar-repo/semantics/artículo |
| id | INTA8216 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2020 |
| publishDateRange | 2020 |
| publishDateSort | 2020 |
| publisher | Oxford University Press |
| publisherStr | Oxford University Press |
| record_format | dspace |
| spelling | INTA82162020-11-09T14:51:30Z A functional–structural plant model that simulates whole- canopy gas exchange of grapevine plants (Vitis vinifera L.) under different training systems Prieto, Jorge Alejandro Louarn, Gaëtan Perez Peña, Jorge Esteban Ojeda, Hernan Simonneau, Thierry Lebon, Eric Vitis vinifera Vid Nitrógeno Intercambio de Gases Fotosíntesis Grapevines Nitrogen Gas Exchange Photosynthesis Canopeo Canopy Background and Aims: Scaling from single-leaf to whole-canopy photosynthesis faces several complexities related to variations in light interception and leaf properties. To evaluate the impact of canopy strucuture on gas exchange, we developed a functional–structural plant model to upscale leaf processes to the whole canopy based on leaf N content. The model integrates different models that calculate intercepted radiation, leaf traits and gas exchange for each leaf in the canopy. Our main objectives were (1) to introduce the gas exchange model developed at the plant level by integrating the leaf-level responses related to canopy structure, (2) to test the model against an independent canopy gas exchange dataset recorded on different plant architectures, and (3) to quantify the impact of intra-canopy N distribution on crop photosynthesis. Methods: The model combined a 3D reconstruction of grapevine (Vitis vinifera) canopy architecture, a light interception model, and a coupled photosynthesis and stomatal conductance model that considers light-driven variations in N distribution. A portable chamber device was constructed to measure whole-plant gas exchange to validate the model outputs with data collected on different training systems. Finally, a sensitivity analysis was performed to evaluate the impact on C assimilation of different N content distributions within the canopy. Key Results: By considering a non-uniform leaf N distribution within the canopy, our model accurately reproduced the daily pattern of gas exchange of different canopy architectures. The gain in photosynthesis permitted by the non-uniform compared with a theoretical uniform N distribution was about 18 %, thereby contributing to the maximization of C assimilation. By contrast, considering a maximal N content for all leaves in the canopy overestimated net CO2 exchange by 28 % when compared with the non-uniform distribution. Conclusions: The model reproduced the gas exchange of plants under different training systems with a low error (10 %). It appears to be a reliable tool to evaluate the impact of a grapevine training system on water use efficiency at the plant level. EEA Mendoza Fil: Prieto, Jorge Alejandro. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Mendoza; Argentina. Fil: Louarn, Gaëtan. Institut National de la Recherche Agronomique; Francia Fil: Perez Peña, Jorge Esteban. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Mendoza; Argentina Fil: Ojeda, Hernan. Institut National de la Recherche Agronomique. Unité expérimentale de Pech Rouge; Francia Fil: Simonneau, Thierry. Institut National de la Recherche Agronomique. LEPSE Montpellier; Francia Fil: Lebon, Eric. Institut National de la Recherche Agronomique. Unité Mixte de Recherche; Francia 2020-11-09T14:48:18Z 2020-11-09T14:48:18Z 2020-09 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://hdl.handle.net/20.500.12123/8216 https://academic.oup.com/aob/article/126/4/647/5677523 0305-7364 1095-8290 https://doi.org/10.1093/aob/mcz203 eng info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) application/pdf Oxford University Press Annals of Botany 126 (4) : 647–660. (September 2020) |
| spellingShingle | Vitis vinifera Vid Nitrógeno Intercambio de Gases Fotosíntesis Grapevines Nitrogen Gas Exchange Photosynthesis Canopeo Canopy Prieto, Jorge Alejandro Louarn, Gaëtan Perez Peña, Jorge Esteban Ojeda, Hernan Simonneau, Thierry Lebon, Eric A functional–structural plant model that simulates whole- canopy gas exchange of grapevine plants (Vitis vinifera L.) under different training systems |
| title | A functional–structural plant model that simulates whole- canopy gas exchange of grapevine plants (Vitis vinifera L.) under different training systems |
| title_full | A functional–structural plant model that simulates whole- canopy gas exchange of grapevine plants (Vitis vinifera L.) under different training systems |
| title_fullStr | A functional–structural plant model that simulates whole- canopy gas exchange of grapevine plants (Vitis vinifera L.) under different training systems |
| title_full_unstemmed | A functional–structural plant model that simulates whole- canopy gas exchange of grapevine plants (Vitis vinifera L.) under different training systems |
| title_short | A functional–structural plant model that simulates whole- canopy gas exchange of grapevine plants (Vitis vinifera L.) under different training systems |
| title_sort | functional structural plant model that simulates whole canopy gas exchange of grapevine plants vitis vinifera l under different training systems |
| topic | Vitis vinifera Vid Nitrógeno Intercambio de Gases Fotosíntesis Grapevines Nitrogen Gas Exchange Photosynthesis Canopeo Canopy |
| url | http://hdl.handle.net/20.500.12123/8216 https://academic.oup.com/aob/article/126/4/647/5677523 https://doi.org/10.1093/aob/mcz203 |
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