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1كتابModelling Nitrogen Distribution in Virtual Plants, as Exemplified by Wheat Culm During Grain Filling
المساهمون: Sciences Agronomiques Appliquées à l'Horticulture (SAGAH), Institut National de la Recherche Agronomique (INRA)-AGROCAMPUS OUEST, Environnement et Grandes Cultures (EGC), Institut National de la Recherche Agronomique (INRA)-AgroParisTech, Écophysiologie des Plantes sous Stress environnementaux (LEPSE), Institut National de la Recherche Agronomique (INRA)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Génétique Diversité et Ecophysiologie des Céréales (GDEC), Institut National de la Recherche Agronomique (INRA)-Université Blaise Pascal - Clermont-Ferrand 2 (UBP), Absent, Li Baoguo, Marc Jaeger, Yan Guo
المصدر: Third International Symposium on Plant Growth Modeling, Simulation, Visualization and Applications: proceedings, 9-13 November 2009, Beijing, China ; https://hal.science/hal-01189547Test ; Third International Symposium on Plant Growth Modeling, Simulation, Visualization and Applications: proceedings, 9-13 November 2009, Beijing, China, IEEE Computer Society, 2009, 978-0-7695-3988-1. ⟨10.1109/PMA.2009.67⟩
مصطلحات موضوعية: PLANT ARCHITECTURE, PHOTOSYNTHETIC N TURNOVER, N REMOBILIZATION, POST-FLOWERING, SENESCENCE, FUNCTIONAL-STRUCTURAL MODELS, NITROGEN, LIGHT, VERTICAL GRADIENTS, [SDV]Life Sciences [q-bio]
الوصف: Titre du symposium précédent: International Symposium on Plant Growth Modeling, Simulation, Visualization and their Applications. ; Nitrogen is fundamental for plant growth. In cereals, growing grains represent a strong sink that triggers nitrogen remobilisation from vegetative organs and results in plant death. A better understanding of this mechanism would help in optimizing crop productivity while reducing fertilization. This work presents an experimental analysis and a process-based model of the spatiotemporal nitrogen distribution during grain filling in winter wheat culms. Nitrogen was distributed homogeneously within individual laminae and sheaths, but a strong gradient existed between organs at successive positions along the culm. During grain filling, the changes in nitrogen content of individual laminae and sheaths showed identical patterns, differing only by a scale factor. Modelling N content of each lamina as the result of the turnover of photosynthetic nitrogen and supposing that all organs share a single pool of mobile nitrogen allowed predicting the observed patterns with high accuracy. This offers new insight for modelling plant nitrogen economy
العلاقة: hal-01189547; https://hal.science/hal-01189547Test; PRODINRA: 47291
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2دورية أكاديميةPlant physiology and proteomics reveals the leaf response to drought in alfalfa (Medicago sativa L.)
المساهمون: University of Barcelona, Universidad de Navarra Pamplona (UNAV), European Project PERMED INCO-CT-2004-509140, Spanish Science and Education Ministry BFU-2004-05096/BFI
المصدر: ISSN: 0022-0957.
مصطلحات موضوعية: Drought, Medicago sativa, N remobilization, oxidative stress, photosynthesis, proteome, Rubisco, RIBULOSE-1,5-BISPHOSPHATE CARBOXYLASE-OXYGENASE, WATER-WATER CYCLE, BRASSICA-NAPUS, XANTHOPHYLL CYCLE, AMINO-ACIDS, N(O)-TERT-BUTYLDIMETHYLSILYL DERIVATIVES, 2-CYSTEINE PEROXIREDOXIN, PINITOL ACCUMULATION, N-2 fixation, N-2 FIXATION RESPONSE, NITROGEN-FIXATION, [SDV]Life Sciences [q-bio]
الوصف: International audience ; Despite its relevance, protein regulation, metabolic adjustment, and the physiological status of plants under drought is not well understood in relation to the role of nitrogen fixation in nodules. In this study, nodulated alfalfa plants were exposed to drought conditions. The study determined the physiological, metabolic, and proteomic processes involved in photosynthetic inhibition in relation to the decrease in nitrogenase (N-ase) activity. The deleterious effect of drought on alfalfa performance was targeted towards photosynthesis and N-ase activity. At the leaf level, photosynthetic inhibition was mainly caused by the inhibition of Rubisco. The proteomic profile and physiological measurements revealed that the reduced carboxylation capacity of droughted plants was related to limitations in Rubisco protein content, activation state, and RuBP regeneration. Drought also decreased amino acid content such as asparagine, and glutamic acid, and Rubisco protein content indicating that N availability limitations were caused by N-ase activity inhibition. In this context, drought induced the decrease in Rubisco binding protein content at the leaf level and proteases were up-regulated so as to degrade Rubisco protein. This degradation enabled the reallocation of the Rubisco-derived N to the synthesis of amino acids with osmoregulant capacity. Rubisco degradation under drought conditions was induced so as to remobilize Rubisco-derived N to compensate for the decrease in N associated with N-ase inhibition. Metabolic analyses showed that droughted plants increased amino acid (proline, a major compound involved in osmotic regulation) and soluble sugar (D-pinitol) levels to contribute towards the decrease in osmotic potential (Psi(s)). At the nodule level, drought had an inhibitory effect on N-ase activity. This decrease in N-ase activity was not induced by substrate shortage, as reflected by an increase in total soluble sugars (TSS) in the nodules. Proline accumulation in the nodule could also be ...
العلاقة: hal-02647710; https://hal.inrae.fr/hal-02647710Test; PRODINRA: 206100; WOS: 000284951900010
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3Plant physiology and proteomics reveals the leaf response to drought in alfalfa (Medicago sativa L.)
المساهمون: University of Barcelona, Universidad de Navarra [Pamplona] (UNAV), European Project PERMED [INCO-CT-2004-509140], Spanish Science and Education Ministry [BFU-2004-05096/BFI]
المصدر: Journal of Experimental Botany
Journal of Experimental Botany, Oxford University Press (OUP), 2011, 62 (1), pp.111-123. ⟨10.1093/jxb/erq249⟩
Digital.CSIC. Repositorio Institucional del CSIC
instnameمصطلحات موضوعية: 0106 biological sciences, Proteomics, Rubisco, Proteome, Physiology, [SDV]Life Sciences [q-bio], Plant Science, 01 natural sciences, N2 fixation, XANTHOPHYLL CYCLE, oxidative stress, AMINO-ACIDS, Asparagine, Photosynthesis, Plant Proteins, 2. Zero hunger, N remobilization, 0303 health sciences, biology, Nitrogenase, Plant physiology, food and beverages, N(O)-TERT-BUTYLDIMETHYLSILYL DERIVATIVES, Research Papers, Droughts, Nitrogen fixation, WATER-WATER CYCLE, Medicago sativa, proteome, N-2 FIXATION RESPONSE, Context (language use), 03 medical and health sciences, N-2 fixation, Botany, 2-CYSTEINE PEROXIREDOXIN, Proline, 030304 developmental biology, photosynthesis, PINITOL ACCUMULATION, Drought, RIBULOSE-1,5-BISPHOSPHATE CARBOXYLASE-OXYGENASE, RuBisCO, fungi, Water, BRASSICA-NAPUS, 15. Life on land, Plant Leaves, Oxidative stress, biology.protein, NITROGEN-FIXATION, 010606 plant biology & botany
الوصف: Despite its relevance, protein regulation, metabolic adjustment, and the physiological status of plants under drought is not well understood in relation to the role of nitrogen fixation in nodules. In this study, nodulated alfalfa plants were exposed to drought conditions. The study determined the physiological, metabolic, and proteomic processes involved in photosynthetic inhibition in relation to the decrease in nitrogenase (N(ase)) activity. The deleterious effect of drought on alfalfa performance was targeted towards photosynthesis and N(ase) activity. At the leaf level, photosynthetic inhibition was mainly caused by the inhibition of Rubisco. The proteomic profile and physiological measurements revealed that the reduced carboxylation capacity of droughted plants was related to limitations in Rubisco protein content, activation state, and RuBP regeneration. Drought also decreased amino acid content such as asparagine, and glutamic acid, and Rubisco protein content indicating that N availability limitations were caused by N(ase) activity inhibition. In this context, drought induced the decrease in Rubisco binding protein content at the leaf level and proteases were up-regulated so as to degrade Rubisco protein. This degradation enabled the reallocation of the Rubisco-derived N to the synthesis of amino acids with osmoregulant capacity. Rubisco degradation under drought conditions was induced so as to remobilize Rubisco-derived N to compensate for the decrease in N associated with N(ase) inhibition. Metabolic analyses showed that droughted plants increased amino acid (proline, a major compound involved in osmotic regulation) and soluble sugar (D-pinitol) levels to contribute towards the decrease in osmotic potential (¿(s)). At the nodule level, drought had an inhibitory effect on N(ase) activity. This decrease in N(ase) activity was not induced by substrate shortage, as reflected by an increase in total soluble sugars (TSS) in the nodules. Proline accumulation in the nodule could also be associated with an osmoregulatory response to drought and might function as a protective agent against ROS. In droughted nodules, the decrease in N(2) fixation was caused by an increase in oxygen resistance that was induced in the nodule. This was a mechanism to avoid oxidative damage associated with reduced respiration activity and the consequent increase in oxygen content. This study highlighted that even though drought had a direct effect on leaves, the deleterious effects of drought on nodules also conditioned leaf responsiveness.
This work was supported by the European Project PERMED (INCO-CT-2004-509140) and by the Spanish Science and Education Ministry (BFU-2004-05096/BFI, Juan de la Cierva research grant). The authors wish to thank Esther Miralles, David Bellido, and Regina Roca (Parc Cientific, Universtitat de Barcelona) for their technical assistance. We would also like to express our thanks for the valuable comments made by the two anonymous referees and to the editor who contributed to the improvement of the manuscript. The contribution of Laurent Coquet and Thierry Jouenne (CNRS, Universite de Rouen) with the proteomic analyses is also appreciated.الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4ce6ec05d0fb3e7ec155d5e1f408ba7dTest
https://pubmed.ncbi.nlm.nih.gov/20797998Test -
4Modelling Nitrogen Distribution in Virtual Plants, as Exemplified by Wheat Culm During Grain Filling
المؤلفون: Pierre Martre, Christian Fournier, Bruno Andrieu, Jessica Bertheloot
المساهمون: Sciences Agronomiques Appliquées à l'Horticulture (SAGAH), Institut National de la Recherche Agronomique (INRA)-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), Environnement et Grandes Cultures (EGC), Institut National de la Recherche Agronomique (INRA)-AgroParisTech, Écophysiologie des Plantes sous Stress environnementaux (LEPSE), Institut National de la Recherche Agronomique (INRA)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Génétique Diversité et Ecophysiologie des Céréales (GDEC), Institut National de la Recherche Agronomique (INRA)-Université Blaise Pascal - Clermont-Ferrand 2 (UBP), Absent, Li Baoguo, Marc Jaeger, Yan Guo, AgroParisTech-Institut National de la Recherche Agronomique (INRA), AGROCAMPUS OUEST-Institut National de la Recherche Agronomique (INRA), Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro)-Institut National de la Recherche Agronomique (INRA)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro), Université Blaise Pascal - Clermont-Ferrand 2 (UBP)-Institut National de la Recherche Agronomique (INRA)
المصدر: Third International Symposium on Plant Growth Modeling, Simulation, Visualization and Applications: proceedings, 9-13 November 2009, Beijing, China
Third International Symposium on Plant Growth Modeling, Simulation, Visualization and Applications: proceedings, 9-13 November 2009, Beijing, China, IEEE Computer Society, 2009, 978-0-7695-3988-1. ⟨10.1109/PMA.2009.67⟩مصطلحات موضوعية: 0106 biological sciences, Plant growth, Lamina, POST-FLOWERING, [SDV]Life Sciences [q-bio], Winter wheat, chemistry.chemical_element, Grain filling, Biology, Photosynthesis, 010603 evolutionary biology, 01 natural sciences, Crop productivity, Sink (geography), 2. Zero hunger, geography, geography.geographical_feature_category, PLANT ARCHITECTURE, food and beverages, Nitrogen, NITROGEN, Horticulture, VERTICAL GRADIENTS, LIGHT, chemistry, Agronomy, PHOTOSYNTHETIC N TURNOVER, SENESCENCE, FUNCTIONAL-STRUCTURAL MODELS, N REMOBILIZATION, 010606 plant biology & botany
الوصف: Titre du symposium précédent: International Symposium on Plant Growth Modeling, Simulation, Visualization and their Applications.; Nitrogen is fundamental for plant growth. In cereals, growing grains represent a strong sink that triggers nitrogen remobilisation from vegetative organs and results in plant death. A better understanding of this mechanism would help in optimizing crop productivity while reducing fertilization. This work presents an experimental analysis and a process-based model of the spatiotemporal nitrogen distribution during grain filling in winter wheat culms. Nitrogen was distributed homogeneously within individual laminae and sheaths, but a strong gradient existed between organs at successive positions along the culm. During grain filling, the changes in nitrogen content of individual laminae and sheaths showed identical patterns, differing only by a scale factor. Modelling N content of each lamina as the result of the turnover of photosynthetic nitrogen and supposing that all organs share a single pool of mobile nitrogen allowed predicting the observed patterns with high accuracy. This offers new insight for modelling plant nitrogen economy
الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::10deb5c91a3cce8e28755b7d8808906fTest
https://hal.archives-ouvertes.fr/hal-01189547Test