NEMA, a functional-structural model of nitrogen economy within wheat culms after flowering. I. Model description
| العنوان: | NEMA, a functional-structural model of nitrogen economy within wheat culms after flowering. I. Model description |
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| المؤلفون: | Jessica Bertheloot, Paul-Henry Cournède, Bruno Andrieu |
| المساهمون: | Institut de Recherche en Horticulture et Semences (IRHS), Université d'Angers (UA)-AGROCAMPUS OUEST-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Mathématiques Appliquées aux Systèmes - EA 4037 (MAS), Ecole Centrale Paris, Environnement et Grandes Cultures (EGC), AgroParisTech-Institut National de la Recherche Agronomique (INRA), INRIA, DigiPlante Project, Université d'Angers (UA)-AGROCAMPUS OUEST, Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Institut National de la Recherche Agronomique (INRA)-AgroParisTech |
| المصدر: | Annals of Botany Annals of Botany, Oxford University Press (OUP), 2011, 108 (6), pp.1085-1096. ⟨10.1093/aob/mcr119⟩ |
| سنة النشر: | 2011 |
| مصطلحات موضوعية: | 0106 biological sciences, senescence, Time Factors, Light, functional-structural plant model, Plant Science, 01 natural sciences, Plant Roots, light acclimation, Soil, wheat, Photosynthesis, root uptake, Triticum, 2. Zero hunger, rubisco turnover, food and beverages, 04 agricultural and veterinary sciences, ECOPHYSIOLOGIE, [SDV.BV.BOT]Life Sciences [q-bio]/Vegetal Biology/Botanics, Nitrogen, Adaptation, Physiological, Model description, remobilization, Protein Transport, Economy, Root uptake, common pool, Ribulose-Bisphosphate Carboxylase, Triticum aestivum, chemistry.chemical_element, Flowers, Biology, Models, Biological, Economy model, Computer Simulation, Desiccation, Nitrogen cycle, Plant roots, business.industry, fungi, Original Articles, 15. Life on land, Plant Leaves, chemistry, Agriculture, 040103 agronomy & agriculture, 0401 agriculture, forestry, and fisheries, business, 010606 plant biology & botany |
| الوصف: | Models simulating nitrogen use by plants are potentially efficient tools to optimize the use of fertilizers in agriculture. Most crop models assume that a target nitrogen concentration can be defined for plant tissues and formalize a demand for nitrogen, depending on the difference between the target and actual nitrogen concentrations. However, the teleonomic nature of the approach has been criticized. This paper proposes a mechanistic model of nitrogen economy, NEMA (Nitrogen Economy Model within plant Architecture), which links nitrogen fluxes to nitrogen concentration and physiological processes. A functional-structural approach is used: plant aerial parts are described in a botanically realistic way and physiological processes are expressed at the scale of each aerial organ or root compartment as a function of local conditions (light and resources). NEMA was developed for winter wheat (Triticum aestivum) after flowering. The model simulates the nitrogen (N) content of each photosynthetic organ as regulated by Rubisco turnover, which depends on intercepted light and a mobile N pool shared by all organs. This pool is enriched by N acquisition from the soil and N release from vegetative organs, and is depleted by grain uptake and protein synthesis in vegetative organs; NEMA accounts for the negative feedback from circulating N on N acquisition from the soil, which is supposed to follow the activities of nitrate transport systems. Organ N content and intercepted light determine dry matter production via photosynthesis, which is distributed between organs according to a demand-driven approach. NEMA integrates the main feedbacks known to regulate plant N economy. Other novel features are the simulation of N for all photosynthetic tissues and the use of an explicit description of the plant that allows how the local environment of tissues regulates their N content to be taken into account. We believe this represents an appropriate frame for modelling nitrogen in functional-structural plant models. A companion paper will present model evaluation and analysis. |
| تدمد: | 1095-8290 0305-7364 |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7d6670d7ed8c40e5bb4bd5ab5793e263Test https://pubmed.ncbi.nlm.nih.gov/21685431Test |
| حقوق: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....7d6670d7ed8c40e5bb4bd5ab5793e263 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 10958290 03057364 |
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