193 results on '"Parent, Boris"'
Search Results
2. Quantifying Wheat Sensitivities to Environmental Constraints to Dissect Genotype × Environment Interactions in the Field
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Parent, Boris, Bonneau, Julien, Maphosa, Lance, Kovalchuk, Alex, Langridge, Peter, and Fleury, Delphine
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- 2017
3. Exploring phenotypic space for mining genotypes and alleles in maize
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Rodriguez, Jonas, Millet, Emilie, Welcker, Claude, Cabrera-Bosquet, Llorenç, Parent, Boris, Tardieu, François, Vile, Denis, Violle, Cyrille, Chazal, Frédéric, Wisser, Randall, Écophysiologie des Plantes sous Stress environnementaux (LEPSE), Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut Agro Montpellier, 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), Génétique et Amélioration des Fruits et Légumes (GAFL), Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut Agro - Montpellier SupAgro, Centre d’Ecologie Fonctionnelle et Evolutive (CEFE), Université Paul-Valéry - Montpellier 3 (UPVM)-École Pratique des Hautes Études (EPHE), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD [France-Sud])-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut Agro Montpellier, 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)-Université de Montpellier (UM), Inria Lyon, and Institut National de Recherche en Informatique et en Automatique (Inria)
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[SDV.BV.AP]Life Sciences [q-bio]/Vegetal Biology/Plant breeding ,[SHS.STAT]Humanities and Social Sciences/Methods and statistics ,[MATH.MATH-AT]Mathematics [math]/Algebraic Topology [math.AT] - Abstract
International audience; Crop species rely on genetic and phenotypic diversity to adapt to various environments. Genotypes respond differently, resulting in genotype-by-environment interactions (GxE). Recent advances in phenomics and modeling allow for the prediction of GxE for traits related to sustainability and productivity. However, a phenotype-centered framework that effectively navigates the interplay between genetics, physiology, and the environment is needed. Here we present maize data from phenotyping platforms and field experiments and explore strategies to integrate concepts and techniques from ecophysiology, ecology, and math to: (i) define and describe phenotypic space across spatial, temporal, and biological scales; (ii) identify unique phenotypic combinations and constraints; and (iii) identify territories of the phenotypic space representing favorable adaptations for crop improvement. Our findings demonstrate the value of phenotype-focused perspectives for adapting crops to climate change.
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- 2023
4. Combining field performance with controlled environment plant imaging to identify the genetic control of growth and transpiration underlying yield response to water-deficit stress in wheat
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Parent, Boris, Shahinnia, Fahimeh, Maphosa, Lance, Berger, Bettina, Rabie, Huwaida, Chalmers, Ken, Kovalchuk, Alex, Langridge, Peter, and Fleury, Delphine
- Published
- 2015
5. Modelling the coordination of the controls of stomatal aperture, transpiration, leaf growth, and abscisic acid : update and extension of the Tardieu–Davies model
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Tardieu, François, Simonneau, Thierry, and Parent, Boris
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- 2015
6. Constitutive overexpression of the TaNF-YB4 gene in transgenic wheat significantly improves grain yield
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Yadav, Dinesh, Shavrukov, Yuri, Bazanova, Natalia, Chirkova, Larissa, Borisjuk, Nikolai, Kovalchuk, Nataliya, Ismagul, Ainur, Parent, Boris, Langridge, Peter, Hrmova, Maria, and Lopato, Sergiy
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- 2015
7. A Hydraulic Model Is Compatible with Rapid Changes in Leaf Elongation under Fluctuating Evaporative Demand and Soil Water Status
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Caldeira, Cecilio F., Bosio, Mickael, Parent, Boris, Jeanguenin, Linda, Chaumont, François, and Tardieu, François
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- 2014
8. Genetic and Physiological Controls of Growth under Water Deficit
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Tardieu, François, Parent, Boris, Caldeira, Cecilio F., and Welcker, Claude
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- 2014
9. Can current crop models be used in the phenotyping era for predicting the genetic variability of yield of plants subjected to drought or high temperature?
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Parent, Boris and Tardieu, François
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- 2014
10. Heat susceptibility of grain filling in wheat (Triticum aestivum L.) linked with rapid chlorophyll loss during a 3-day heat treatment
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Shirdelmoghanloo, Hamid, Lohraseb, Iman, Rabie, Huwaida S., Brien, Chris, Parent, Boris, and Collins, Nicholas C.
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- 2016
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11. The plasma membrane aquaporin ZmPIP2;5 enhances the sensitivity of stomatal closure to water deficit
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UCL - SST/LIBST - Louvain Institute of Biomolecular Science and Technology, Ding, Lei, Milhiet, Thomas, Parent, Boris, Meziane, Adel, Tardieu, François, Chaumont, François, UCL - SST/LIBST - Louvain Institute of Biomolecular Science and Technology, Ding, Lei, Milhiet, Thomas, Parent, Boris, Meziane, Adel, Tardieu, François, and Chaumont, François
- Abstract
Increasing stomata movement is beneficial to improve plant water use efficiency and drought resilience. Contradictory results indicate that aquaporins might regulate stomatal movement. Here, we tested whether the maize plasma membrane PIP2;5 aquaporin affects stomatal closure under water deficit, abscisic acid (ABA) or vapor pressure deficit (VPD) treatment in intact plants, detached leaves, or peeled epidermis. Transpiration, stomatal conductance (gs) and aperture, and reactive oxygen species (ROS) in stomatal complexes were studied in maize lines with increased or knocked down (KD) PIP2;5 gene expression. In well-watered conditions, the PIP2;5 overexpressing (OE) plants transpired more than wild types (WT), while no significant difference in transpiration was observed between pip2;5 KD and WT. Upon mild-water deficit or low ABA concentration treatments, transpiration and gs decreased more in PIP2;5 OE, and less in pip2;5 KD lines, in comparison with WTs. In detached epidermis, ABA treatment induced faster stomatal closing in PIP2;5 OE lines compared to WT, while pip2;5 KD stomata were ABA insensitive. These phenotypes were associated with guard cell ROS accumulation. Additionally, PIP2;5 is involved in the transpiration decrease observed under high VPD. These data indicate that maize PIP2;5 is a key actor increasing the sensitivity of stomatal closure to water deficit
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- 2022
12. High‐throughput phenotyping reveals differential transpiration behaviour within the banana wild relatives highlighting diversity in drought tolerance
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Eyland, David, primary, Luchaire, Nathalie, additional, Cabrera‐Bosquet, Llorenç, additional, Parent, Boris, additional, Janssens, Steven B., additional, Swennen, Rony, additional, Welcker, Claude, additional, Tardieu, François, additional, and Carpentier, Sebastien C., additional
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- 2022
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13. The plasma membrane aquaporin ZmPIP2;5 enhances the sensitivity of stomatal closure to water deficit
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Ding, Lei, primary, Milhiet, Thomas, additional, Parent, Boris, additional, Meziane, Adel, additional, Tardieu, François, additional, and Chaumont, François, additional
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- 2022
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14. High-throughput shoot imaging to study drought responses
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Berger, Bettina, Parent, Boris, and Tester, Mark
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- 2011
15. Simulating the effect of flowering time on maize individual leaf area in contrasting environmental scenarios
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Lacube, Sebastien, Manceau, Loïc, Welcker, Claude, Millet, Emilie J, Gouesnard, Brigitte, Palaffre, Carine, Ribaut, Jean-Marcel, Hammer, Graeme, Parent, Boris, Tardieu, François, Écophysiologie des Plantes sous Stress environnementaux (LEPSE), Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), 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), Wageningen University and Research [Wageningen] (WUR), Amélioration génétique et adaptation des plantes méditerranéennes et tropicales (UMR AGAP), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Unité expérimentale du maïs (BORDX ST-MARTIN UE), Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), International Maize and Wheat Improvement Center (CIMMYT), Consultative Group on International Agricultural Research [CGIAR] (CGIAR), University of Queensland [Brisbane], ANR-10-BTBR-0001,AMAIZING,Développer de nouvelles variétés de maïs pour une agriculture durable: une approche intégrée de la génomique à la sélection(2010), ANR-11-INBS-0012,PHENOME,Centre français de phénomique végétale(2011), European Project: 244374,EC:FP7:KBBE,FP7-KBBE-2009-3,DROPS(2010), Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut Agro - Montpellier SupAgro, 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), and Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut Agro - Montpellier SupAgro
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[SDV.SA]Life Sciences [q-bio]/Agricultural sciences ,Leaf growth ,Light ,Whole plant ,whole plant ,Zea mays ,Wiskundige en Statistische Methoden - Biometris ,Soil ,genetic variability ,[SDV.BV]Life Sciences [q-bio]/Vegetal Biology ,Mathematical and Statistical Methods - Biometris ,[SDV.EE]Life Sciences [q-bio]/Ecology, environment ,model ,Drought ,AcademicSubjects/SCI01210 ,Temperature ,Water ,temperature ,PE&RC ,Research Papers ,whole-plant ,Europe ,Plant Leaves ,Plant—Environment Interactions ,leaf growth ,Genetic variability ,light ,Model - Abstract
The quality of yield prediction is linked to that of leaf area. We first analysed the consequences of flowering time and environmental conditions on the area of individual leaves in 127 genotypes presenting contrasting flowering times in fields of Europe, Mexico, and Kenya. Flowering time was the strongest determinant of leaf area. Combined with a detailed field experiment, this experiment showed a large effect of flowering time on the final leaf number and on the distribution of leaf growth rate and growth duration along leaf ranks, in terms of both length and width. Equations with a limited number of genetic parameters predicted the beginning, end, and maximum growth rate (length and width) for each leaf rank. The genotype-specific environmental effects were analysed with datasets in phenotyping platforms that assessed the effects (i) of the amount of intercepted light on leaf width, and (ii) of temperature, evaporative demand, and soil water potential on leaf elongation rate. The resulting model was successfully tested for 31 hybrids in 15 European and Mexican fields. It potentially allows prediction of the vertical distribution of leaf area of a large number of genotypes in contrasting field conditions, based on phenomics and on sensor networks., Flowering time affects all processes governing whole-plant leaf area, namely rates, durations, and sensitivity to environmental conditions. Genotype dependency was assessed via large phenomic datasets in field and controlled conditions.
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- 2020
16. High-throughput shoot imaging to study drought responses
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Berger, Bettina, Parent, Boris, and Tester, Mark
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- 2010
17. Diel time-courses of leaf growth in monocot and dicot species: endogenous rhythms and temperature effects
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Poiré, Richard, Wiese-Klinkenberg, Anika, Parent, Boris, Mielewczik, Michael, Schurr, Ulrich, Tardieu, François, and Walter, Achim
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- 2010
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18. Drought and Abscisic Acid Effects on Aquaporin Content Translate into Changes in Hydraulic Conductivity and Leaf Growth Rate: A Trans-Scale Approach
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Parent, Boris, Hachez, Charles, Redondo, Elise, Simonneau, Thierry, Chaumont, François, and Tardieu, François
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- 2009
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19. Genetic control of grain yield and grain physical characteristics in a bread wheat population grown under a range of environmental conditions
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Maphosa, Lancelot, Langridge, Peter, Taylor, Helen, Parent, Boris, Emebiri, Livinus C., Kuchel, Haydn, Reynolds, Matthew P., Chalmers, Ken J., Okada, Anzu, Edwards, James, and Mather, Diane E.
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- 2014
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20. Sensitivities to temperature and evaporative demand in wheat relatives
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Leveau, Stéphane, Parent, Boris, Zaka, Serge, Martre, Pierre, Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), and ITK [Clapiers]
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food and beverages ,[SDV.BV]Life Sciences [q-bio]/Vegetal Biology ,human activities - Abstract
International audience; There is potential sources of alleles and genes currently locked into wheat-related species that could be introduced into wheat breeding programs for current and future hot and dry climates. However, neither the intra- nor the inter-specific diversity of the responses of leaf growth and transpiration to temperature and evaporative demand have been investigated in a large diversity of wheat-related species. By analysing 12 groups of wheat-related sub-species, we questioned the n-dimensional structure of the genetic diversity for traits linked to plant vegetative structures and development, leaf expansion and transpiration together with their responses to “non-stressing” range of temperature and evaporative demand. In addition to provide new insight on how genome type, ploidy level, phylogeny and breeding pressure together structure this genetic diversity, this study provides new mathematical formalisms and the associated parameters of trait responses in the large genetic diversity of wheat-related species. This potentially allow crop models predicting the impact of this diversity on yield, and indicate potential sources of varietal improvement for modern wheat germplasms, through interspecific crosses.
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- 2021
21. Impact de la variabilité intra- et inter-spécifique des réponses à la température et au déficit hydrique dans la diversité des scénarios E x M
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Parent, Boris, Écophysiologie des Plantes sous Stress environnementaux (LEPSE), Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), 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), Université de Montpellier (UM), FRA., Alain Ourry, and Ausset, Aurélien
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déficit hydrique ,température ,temperature ,variabilité intra-et inter-spécifique ,scénarios E x M ,[SDV.BV]Life Sciences [q-bio]/Vegetal Biology ,[SDV.BV] Life Sciences [q-bio]/Vegetal Biology ,E x M scenarios ,intra- and inter-specific variability ,water deficit - Abstract
Impact de la variabilité intra-et inter-spécifique des réponses à la température et au déficit hydrique dans la diversité des scénarios E x M
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- 2021
22. Differential sensitivity to temperature and evaporative demand in wheat relatives
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Leveau, Stéphane, primary, Parent, Boris, additional, Zaka, Serge, additional, and Martre, Pierre, additional
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- 2021
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23. High-throughput phenotyping reveals differential transpiration behavior within the banana wild relatives highlighting diversity in drought tolerance
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Eyland, David, primary, Luchaire, Nathalie, additional, Cabrera-Bosquet, Llorenç, additional, Parent, Boris, additional, Janssens, Steven, additional, Swennen, Rony, additional, Welcker, Claude, additional, Tardieu, Francois, additional, and carpentier, sebastien, additional
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- 2021
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24. Multi-environment analysis and improved mapping of a yield-related QTL on chromosome 3B of wheat
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Bonneau, Julien, Taylor, Julian, Parent, Boris, Bennett, Dion, Reynolds, Matthew, Feuillet, Catherine, Langridge, Peter, and Mather, Diane
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- 2013
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25. Joint modelling for parameter estimation involving genotypic effects in crop model from platform and open field experiments
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Kuhn, Estelle, Leger, Jean-Benoist, Parent, Boris, Tardieu, François, Welcker, Claude, KUHN, Estelle, and Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)
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[MATH] Mathematics [math] ,[MATH]Mathematics [math] ,ComputingMilieux_MISCELLANEOUS - Abstract
International audience
- Published
- 2021
26. Estimation des paramètres d'un modèle de culture à partir de données de plein champ et de données de plateforme de phénotypage
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Leger, Jean-Benoist, Kuhn, Estelle, Parent, Boris, Tardieu, François, Welcker, Claude, KUHN, Estelle, Université de Technologie de Compiègne (UTC), Mathématiques et Informatique Appliquées du Génome à l'Environnement [Jouy-En-Josas] (MaIAGE), Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Écophysiologie des Plantes sous Stress environnementaux (LEPSE), Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), 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), Société Française de Statistique, and Université Côte d'Azur
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Algorithme Gibbs hybride ,crop model ,Données hétérogènes ,Gibbs hybrid algorithm ,mixed effects models ,Modèle bayésien ,[MATH] Mathematics [math] ,[MATH]Mathematics [math] ,heterogeneous data ,Modèles à effets mixtes ,Modèle de culture ,bayesian model - Abstract
Crop models were developed by ecophysiologists to describe plant development. They allow in particular to report difference existing between several genotypes in several environments, due to genotype by environment interaction. It is first necessary to calibrate these models to use them for prediction purpose. We consider the crop model APSIM and present a joint bayesian model with mixed effects. We infer models parametervalues from data collected in the field and in phenotyping platform. Prior distribution are chosen in order to integrate expert knowledge. We implement an hybrid Gibbs algorithm to simulate the posterior distribution. Results obtained from simulated and real data highlight clearly the advantage of using phenotyping platform data in addition to field data., Les modèles de culture élaborés par des écophysiologistes décrivent les processus de développement d"une plante. Ils permettent en particulier de rendre compte des différences de comportement de plusieurs variétés dans différents environnements, dues aux interactions génotype-environnement. Pour les utiliser à des fins prédictives, il est nécessaire de calibrer auparavant leurs paramètres. Nous considérons le modèle de culture APSIM et proposons un modèle joint bayésien à effets mixtes dans lequel nous inférons la valeur des paramètres inconnus à partir de données issues d'expérience de plein champ et mesurées en plateforme de phénotypage. Nous choisissons des lois a priori informatives pour intégrer les connaissances d'expert et implémentons un algorithme de type Gibbs hybride pour simuler la loi a posteriori. Les résultats obtenus sur données simulées et réelles mettent en évidence le gain obtenu sur la précision des estimations en utilisant les données issues de plateforme de phénotypage en sus des données de champ.
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- 2021
27. Modification of the expression of the aquaporin ZmPIP2;5 affects water relations and plant growth
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UCL - SST/LIBST - Louvain Institute of Biomolecular Science and Technology, UCL - SST/ELI/ELIA - Agronomy, Ding, Lei, Milhiet, Thomas, Couvreur, Valentin, Nelissen, Hilde, Meziane, Adel, Parent, Boris, Aesaert, Stijn, Van Lijsebettens, Mieke, Inzé, Dirk, Tardieu, François, Draye, Xavier, Chaumont, François, UCL - SST/LIBST - Louvain Institute of Biomolecular Science and Technology, UCL - SST/ELI/ELIA - Agronomy, Ding, Lei, Milhiet, Thomas, Couvreur, Valentin, Nelissen, Hilde, Meziane, Adel, Parent, Boris, Aesaert, Stijn, Van Lijsebettens, Mieke, Inzé, Dirk, Tardieu, François, Draye, Xavier, and Chaumont, François
- Abstract
The plasma membrane intrinsic protein PIP2;5 is the most highly expressed aquaporin in maize (Zea mays) roots. Here, we investigated how deregulation of PIP2;5 expression affects water relations and growth using maize overexpression (OE; B104 inbred) or knockout (KO; W22 inbred) lines. The hydraulic conductivity of the cortex cells of roots grown hydroponically was higher in PIP2;5 OE and lower in pip2;5 KO lines compared with the corresponding wild-type plants. While whole-root conductivity decreased in the KO lines compared to the wild type, no difference was observed in OE plants. This paradox was interpreted using the MECHA hydraulic model, which computes the radial flow of water within root sections. The model hints that the plasma membrane permeability of the cells is not radially uniform but that PIP2;5 may be saturated in cell layers with apoplastic barriers, i.e. the endodermis and exodermis, suggesting the presence of posttranslational mechanisms controlling the abundance of PIP in the plasma membrane in these cells. At the leaf level, where the PIP2;5 gene is weakly expressed in wildtype plants, the hydraulic conductance was higher in the PIP2;5 OE lines compared with the wild-type plants, whereas no difference was observed in the pip2;5 KO lines. The temporal trend of leaf elongation rate, used as a proxy for that of xylem water potential, was faster in PIP2;5 OE plants upon mild stress, but not in well-watered conditions, demonstrating that PIP2;5 may play a beneficial role in plant growth under specific conditions.
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- 2020
28. Barley Plants Overexpressing Ferrochelatases (HvFC1 and HvFC2) Show Improved Photosynthetic Rates and Have Reduced Photo-Oxidative Damage under Drought Stress than Non-Transgenic Controls
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Nagahatenna, Dilrukshi S. K., primary, Parent, Boris, additional, Edwards, Everard J., additional, Langridge, Peter, additional, and Whitford, Ryan, additional
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- 2020
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29. Modification of the Expression of the Aquaporin ZmPIP2;5 Affects Water Relations and Plant Growth
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Ding, Lei, primary, Milhiet, Thomas, additional, Couvreur, Valentin, additional, Nelissen, Hilde, additional, Meziane, Adel, additional, Parent, Boris, additional, Aesaert, Stijn, additional, Van Lijsebettens, Mieke, additional, Inzé, Dirk, additional, Tardieu, François, additional, Draye, Xavier, additional, and Chaumont, François, additional
- Published
- 2020
- Full Text
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30. Experimental and modeling evidence of carbon limitation of leaf appearance rate for spring and winter wheat
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Baumont, Maeva, Parent, Boris, Manceau, Loïc, Brown, Hamish E., Driever, Steven M., Muller, Bertrand, Martre, Pierre, Baumont, Maeva, Parent, Boris, Manceau, Loïc, Brown, Hamish E., Driever, Steven M., Muller, Bertrand, and Martre, Pierre
- Abstract
Accurate predictions of the timing of physiological stages and the development rate are crucial for predicting crop performance under field conditions. Plant development is controlled by the leaf appearance rate (LAR) and our understanding of how LAR responds to environmental factors is still limited. Here, we tested the hypothesis that carbon availability may account for the effects of irradiance, photoperiod, atmospheric CO2 concentration, and ontogeny on LAR. We conducted three experiments in growth chambers to quantify and disentangle these effects for both winter and spring wheat cultivars. Variations of LAR observed between environmental scenarios were well explained by the supply/demand ratio for carbon, quantified using the photothermal quotient. We therefore developed an ecophysiological model based on the photothermal quotient that accounts for the effects of temperature, irradiance, photoperiod, and ontogeny on LAR. Comparisons of observed leaf stages and LAR with simulations from our model, from a linear thermal-time model, and from a segmented linear thermal-time model corrected for sowing date showed that our model can simulate the observed changes in LAR in the field with the lowest error. Our findings demonstrate that a hypothesis-driven approach that incorporates more physiology in specific processes of crop models can increase their predictive power under variable environments.
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- 2019
31. Drought tolerance: which mechanisms, traits and alleles for which drought scenarios?
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Tardieu, Francois, Millet, Emilie, Alvarez Prado, Santiago, Cabrera Bosquet, Llorenç, Lacube, Sébastien, Parent, Boris, Welcker, Claude, 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), 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), ANR, UE, and Inra
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plateforme de phénotypage ,Vegetal Biology ,mécanisme physiologique ,scénario climatique ,variabilité génétique ,fungi ,prédiction génétique ,tolérance à la sécheresse ,food and beverages ,[SDV.BV]Life Sciences [q-bio]/Vegetal Biology ,conductance stomatique ,Biologie végétale - Abstract
Plants are subjected every day to rapid variation of evaporative demand and soil water availability, resulting in rapid changes in stomatal conductance, expansive growth and metabolism over minutes. Because yield involves several months, the connection between physiological mechanisms and response of yield to drought scenarios faces a massive problem of time scales. Furthermore, yield results from optimization between traits and alleles that lead to either minimize the risk of crop failure or to increase crop production. Evolution has tended to favour conservative processes (short crop cycle, low transpiration and leaf area, large root systems) which are favourable under severe stresses, whereas yield in milder water deficits is associated with the opposite traits. Hence, one aims at identifying which traits and alleles are favourable in which drought scenarios, rather than at a generic ‘drought tolerance’. We deal with these methodological difficulties by combining phenomics, modelling, genetic analysis and genomic prediction. A first strategy explores the genetic variability of key processes, which are translated into parameters of a crop model. This requires detailed analyses in phenotyping platforms with a capacity of thousands of plants, with the relevant time scales. These parameters are analysed by GWAS and simulated via genomic prediction. The model can then simulate yield in hundreds of fields for hundreds of genotypes, from genetic parameters of each genotype and environmental conditions in each field. A second strategy directly explores the responses of yield to environmental conditions in contrasting environmental scenarios, e.g. in 40 fields. This results in a mixed model whose parameters are analysed genetically and can be estimated by genomic prediction, thereby allowing one to predict yields in new genotypes and fields. As a whole, the combination of field and platform data allows identification of combination
- Published
- 2018
32. Experimental and modeling evidence of carbon limitation of leaf appearance rate for spring and winter wheat
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Baumont, Maeva, primary, Parent, Boris, additional, Manceau, Loïc, additional, Brown, Hamish E, additional, Driever, Steven M, additional, Muller, Bertrand, additional, and Martre, Pierre, additional
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- 2019
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33. The use of thermal time in plant studies has a sound theoretical basis provided that confounding effects are avoided
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Parent, Boris, primary, Millet, Emilie J, additional, and Tardieu, François, additional
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- 2018
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34. Genetic variability of plant responses to evaporative demand and water deficit, a forward integration from phenotyping to simulation of plant performances in the field
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Parent, Boris, Millet, Emilie, Alvarez Prado, Santiago, Coupel-Ledru, Aude, Cabrera Bosquet, Llorenç, Lacube, Sébastien, Welcker, Claude, MEZIANE, Adel, Tardieu, Francois, 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), 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), and 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)
- Subjects
Vegetal Biology ,scénario climatique ,fungi ,variabilité génétique ,approche intégrée ,food and beverages ,simulation models ,genotype environment interaction ,modèle écophysiologique ,modèle de simulation ,interaction génotype environnement ,water stress ,détection de qtl ,phénotypage ,genetic variability ,région génomique ,[SDV.BV]Life Sciences [q-bio]/Vegetal Biology ,stress hydrique ,europe ,Biologie végétale - Abstract
Crop improvement for drought is based on the selection of alleles that increase yield in dry or hot conditions. The Genotype by Environment Interactions (GxE) is typically high in these environments, with alleles conferring either positive or negative effects, depending on drought scenarios (Tardieu, 2012). Rather than trying to over-simplify GxE, for instance, in managed drought experiments, we propose an integrative approach using genome wide association studies (GWAS), phenotyping and modelling. It aims at predicting in which drought scenarios a combination of trait/allele could confer advantages (Parent and Tardieu, 2015). Indeed, (i) we phenotype the intra- and inter- specific variability of development and growth responses to temperature, evaporative demand and water deficit with phenotyping platforms. (ii) We develop ecophysiological models with parameters which can be directly extracted from measurements in platforms and in the field. (iii) We carry out GWAS at different scales, from -omic to plant scale in platform, and to yield components in network of field experiments to identify QTLs linked to conditional allelic effects depending on environmental conditions, and to values of model parameters. (iv) We use either direct measurements or the allelic compositions at target QTLs to determine the phenotypic profiles (set of parameter values) of real or virtual genotypes. (v) We simulate genotypic performance and the contribution of genomic regions under current and future stress situations over Europe via modelling. Results are compared to the observed genetic variability in networks of field experiments and are used as feedbacks for improving our phenotyping routines and ecophysiological models.
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- 2017
35. Phenotyping for the response to drought and high temperatures in a diversity of scenarios
- Author
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Tardieu, Francois, Millet, Emilie, Alvarez Prado, Santiago, Coupel-Ledru, Aude, Cabrera Bosquet, Llorenç, Lacube, Sébastien, Parent, Boris, Welcker, Claude, 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), 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), and 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)
- Subjects
Vegetal Biology ,scénario climatique ,maïs ,qtl ,[SDE.MCG]Environmental Sciences/Global Changes ,tolérance à la sécheresse ,interception de la lumière ,maize ,modèle structure fonction ,plateforme de phénotypage ,tolérance à la chaleur ,water stress ,maquette 3d ,température ,région génomique ,[SDV.BV]Life Sciences [q-bio]/Vegetal Biology ,stress hydrique ,Milieux et Changements globaux ,Biologie végétale - Abstract
The plant science community has to design new genotypes that are able to cope with the diversity of environmental conditions linked to climate change. A major issue is to combine genomic selection with knowledge originating from phenotyping. We have adopted for that a multi-scale multi-environment approach. In the field, it consisted of clustering time courses of environmental variables over Europe into six scenarios of temperature and water deficit experienced by plants; of performing field experiments in 29 contrasting environmental conditions across Europe with a panel of 250 maize hybrids; assigning individual experiments to previously defined scenarios, and finally analysing the genetic variation of plant performance for each environmental scenario via genome wide association studies (GWAS). Large variations of QTL effects depending on environmental scenarios resulted in a pattern associated with each QTL. In a phenotyping platform (Phenoarch), we have estimated intercepted light and radiation use efficiency of each hybrid of the same panel via a functional-structural model using 3D reconstructions of each plant, and the sensitivity of growth to water deficit of each hybrid via a joint analysis of several experiments with contrasting light, evaporative demand and soil water potential. As a whole, the combination of field and platform approaches results in a dataset that allows one to identify genomic regions associated with tolerance in specific scenarios of heat and drought, and with traits associated to these genomic regions. Finally, models allow identifying geographical regions in which a given combination of alleles is likely to have comparative advantages.
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- 2017
36. Distinct controls of leaf widening and elongation by light and evaporative demand in maize
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Lacube, Sébastien, Fournier, Christian, Palaffre, Carine, Millet, Emilie J., Tardieu, Francois, Parent, Boris, 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), Modeling plant morphogenesis at different scales, from genes to phenotype (VIRTUAL PLANTS), Amélioration génétique et adaptation des plantes méditerranéennes et tropicales (UMR AGAP), Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro)-Institut National de la Recherche Agronomique (INRA)-Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro)-Institut National de la Recherche Agronomique (INRA)-Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Inria Sophia Antipolis - Méditerranée (CRISAM), Institut National de Recherche en Informatique et en Automatique (Inria)-Institut National de Recherche en Informatique et en Automatique (Inria), Unité expérimentale du maïs (BORDX ST-MARTIN UE), Institut National de la Recherche Agronomique (INRA), ANR-10-BTBR-01-01/10-BTBR-0001,AMAIZING,AMAIZING(2010), European Project: 244374,EC:FP7:KBBE,FP7-KBBE-2009-3,DROPS(2010), Inria Sophia Antipolis - Méditerranée (CRISAM), Institut National de Recherche en Informatique et en Automatique (Inria)-Institut National de Recherche en Informatique et en Automatique (Inria)-Institut National de la Recherche Agronomique (INRA)-Amélioration génétique et adaptation des plantes méditerranéennes et tropicales (UMR AGAP), Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro)-Institut National de la Recherche Agronomique (INRA)-Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro)-Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro), Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), 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 la Recherche Agronomique (INRA)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro), Institut National de la Recherche Agronomique (INRA)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), 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)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut National de la Recherche Agronomique (INRA)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), 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)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad), Agence Nationale de la Recherche project ANR-10-BTBR-01 (Amaizing), Agence de l'Environnement et de la Maitrise de l'Energie (ADEME), ANR-10-BTBR-0001,AMAIZING,Développer de nouvelles variétés de maïs pour une agriculture durable: une approche intégrée de la génomique à la sélection(2010), and Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-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)-Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-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)
- Subjects
lumière ,Vegetal Biology ,Leaf width ,leaf area ,Light ,QTL ,maïs ,VPD ,Evaporative demand ,Leaf length ,Leaf elongation ,Leaf widening ,GWAS ,croissance foliaire ,évapotranspiration ,maize ,surface foliaire ,photoradiation ,[SDV.BV]Life Sciences [q-bio]/Vegetal Biology ,écophysiologie végétale ,Biologie végétale - Abstract
International audience; Leaf expansion depends on both carbon and water availabilities. In cereals, most of experimental effort has focused on leaf elongation, with essentially hydraulic effects. We have tested if evaporative demand and light could have distinct effects on leaf elongation and widening, and if short term effects could translate into final leaf dimensions. For that, we have monitored leaf widening and elongation in a field experiment with temporary shading, and in a platform experiment with 15-min temporal resolution and contrasting evaporative demands. Leaf widening showed a strong (positive) sensitivity to whole-plant intercepted light and no response to evaporative demand. Leaf elongation was (negatively) sensitive to evaporative demand, without effect of intercepted light per se. We have successfully tested resulting equations to predict leaf length and width in an external dataset of 15 field and 6 platform experiments. These effects also applied to a panel of 251 maize hybrids. Leaf length and width presented quantitative trait loci (QTLs) whose allelic effects largely differed between both dimensions but were consistent in the field and the platform, with high QTLxEnvironment interaction. It is therefore worthwhile to identify the genetic and environmental controls of leaf width and leaf length for prediction of plant leaf area.
- Published
- 2017
37. Predictable ‘meta-mechanisms’ emerge from feedbacks between transpiration and plant growth and cannot be simply deduced from short-term mechanisms
- Author
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Tardieu, Francois, Parent, Boris, 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), 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), European project FP7-KBBE-2012-6-311933 (Water4Crops), project ANR-10-BTBR-01 (Amaizing), ANR-10-BTBR-0001,AMAIZING,AMAIZING(2010), European Project: 244374, and ANR-10-BTBR-0001,AMAIZING,Développer de nouvelles variétés de maïs pour une agriculture durable: une approche intégrée de la génomique à la sélection(2010)
- Subjects
plant architecture ,système racinaire ,Root system ,déficit hydrique ,acide abscisique ,fungi ,root systems ,food and beverages ,Hydraulics ,Growth ,dynamic model ,Feedback ,ABA ,Conductance ,Control ,abscissins ,[SDV.BV]Life Sciences [q-bio]/Vegetal Biology ,conductance stomatique ,écophysiologie végétale ,conductance hydraulique ,modèle dynamique ,water deficit ,architecture de la plante - Abstract
Growth under water deficit is controlled by short-term mechanisms but, because of numerous feedbacks, the combination of these mechanisms over time often results in outputs that cannot be deduced from the simple inspection of individual mechanisms. It can be analysed with dynamic models in which causal relationships between variables are considered at each time-step, allowing calculation of outputs that are routed back to inputs for the next time-step and that can change the system itself. We first review physiological mechanisms involved in seven feedbacks of transpiration on plant growth, involving changes in tissue hydraulic conductance, stomatal conductance, plant architecture and underlying factors such as hormones or aquaporins. The combination of these mechanisms over time can result in non-straightforward conclusions as shown by examples of simulation outputs: ‘over production of abscisic acid (ABA) can cause a lower concentration of ABA in the xylem sap ’, ‘decreasing root hydraulic conductance when evaporative demand is maximum can improve plant performance’ and ‘rapid root growth can decrease yield’. Systems of equations simulating feedbacks over numerous time-steps result in logical and reproducible emergent properties that can be viewed as ‘meta-mechanisms’ at plant level, which have similar roles as mechanisms at cell level.
- Published
- 2017
38. Quantifying wheat sensitivities to environmental constraints to dissect G x E in the field
- Author
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Parent, Boris, BONNEAU, Julien, Maphosa, Lance, Kovalchuk, Alex, Langridge, Peter, Fleury, Delphine, Écophysiologie des Plantes sous Stress environnementaux (LEPSE), 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), Australian Centre for Plant Functional Genomics (ACPFG) and School of Agriculture, Food and Wine, Waite Research Institute, University of Adelaide, Australian Research Council, The Grains Research and Development Corporation [ACP00002-Q], European Project: 244374, 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), and 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)
- Subjects
blé ,wheat ,contrainte environnementale ,food and beverages ,[SDV.BV]Life Sciences [q-bio]/Vegetal Biology ,analyse de qtl ,genotype environment interaction ,écophysiologie végétale ,interaction génotype environnement - Abstract
Yield is subject to strong Genotype by Environment interactions (G x E) in the field, especially under abiotic constraints such as soil water deficit (Drought, D) and high temperature (Heat, H). Since environmental conditions show strong fluctuations during the whole crop cycle, geneticists usually do not consider the environmental measures as quantitative variables, but rather as factors in multi-environment analyses. Based on 11 experiments in a field platform with contrasted temperature and soil water deficit, we determined the periods of sensitivity to drought and heat constraints in wheat (Triticum aestivum L.) and determined the average sensitivities for major yield components. G x E interactions were separated into their underlying components, constitutive (G), G x D, G x H and G x H x D, and were analysed for two genotypes, highlighting contrasted responses to heat and drought constraints. We then tested the constitutive and responsive behaviours of two strong Quantitative Trait Loci (QTL) previously associated with yield components. This analysis confirmed the constitutive effect of chromosome 1B QTL, and explained the G x E interaction of chromosome 3B QTL by a benefit of one allele when temperature rises. In addition to the method itself which can be applied to other datasets and populations, this study will support the cloning of a major yield QTL on chromosome 3B which is highly dependent on environmental conditions, and for which the climatic interaction is now quantified.
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- 2017
39. Genetic basis of wheat yield under dry and hot climates
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Thomelin, Pauline, Arsego, Fabio, Tura, Habtamu, Garcia, Melissa, Tricker, Penny, Eckermann, Paul, Parent, Boris, Fleury, Delphine, University of Adelaide, 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), and 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)
- Subjects
Reproductive Biology ,carte génétique ,australie ,qtl ,food and beverages ,tolérance à la sécheresse ,[SDV.BDLR]Life Sciences [q-bio]/Reproductive Biology ,genotype environment interaction ,modèle écophysiologique ,interaction génotype environnement ,blé ,wheat ,Biologie de la reproduction ,genetic mapping - Abstract
In Australian dryland agriculture, grain crop yields are approximately 50% of their potential and are highly unpredictable. During the 1990’s, the rate of productivity increase in Australian broad acre cropping improved by 3.4% annually but has since slowed and declined by -1.4% in drought years. A way to improve the drought tolerance of crops varieties is to discover new genes and alleles that allow plants to continue to grow and yield grain under water limited conditions. Although many quantitative trait loci (QTL) have been identified in wheat, few have been deployed in breeding programmes. We cumulated QTL over 10 years on three wheat populations for yield, agronomical, physiological and morphological traits in various locations in Australia, India and Mexico. Genomic resources now enable us make progress in fine mapping and positional cloning of QTL in wheat. Target QTL that increases yield and yield components in hot and dry climates were fine mapped to genes level using the cv Chinese Spring reference sequence and whole genome shotgun sequences of Australian parental lines. We also investigated QTL function under controlled conditions to measure growth rate, transpiration, stomatal traits, and semi-controlled evironments using deep soil bins, rainout shelter and irrigation. By measuring accurately the environmental variables and using ecophysiological models, we can dissect the response to the environment into elementary and simpler traits and identify the conditions where a QTL is specifically expressed. Such detailed information on QTL x environment interaction, physiological mechanism and fine mapping is crucial for breeding application.
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- 2017
40. Modification of the Expression of the Aquaporin ZmPIP2;5 Affects Water Relations and Plant Growth.
- Author
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Lei Ding, Milhiet, Thomas, Couvreur, Valentin, Nelissen, Hilde, Meziane, Adel, Parent, Boris, Aesaert, Stijn, Van Lijsebettens, Mieke, Inzé, Dirk, Tardieu, François, Draye, Xavier, and Chaumont, François
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- 2020
- Full Text
- View/download PDF
41. Introducing the genetic variability in crop models by combining pheno-typing with modelling
- Author
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Lacube, Sébastien, Parent, Boris, Hammer, G., Tardieu, Francois, Écophysiologie des Plantes sous Stress environnementaux (LEPSE), Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), 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 la Recherche Agronomique (INRA)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro), Queensland Alliance for Agriculture and Food Innovation (QAAFI), University of Queensland [Brisbane], and Leibniz-Zentrum für Agrarlandschaftsforschung = Leibniz Centre for Agricultural Landscape Research, Leibniz Association (ZALF). DEU.
- Subjects
plateforme de phénotypage ,Vegetal Biology ,croissance de la feuille ,variabilité génétique ,[SDV.BV]Life Sciences [q-bio]/Vegetal Biology ,Biologie végétale ,modèle de croissance ,variabilité genotypique ,ComputingMilieux_MISCELLANEOUS ,interaction génotype environnement - Abstract
International audience
- Published
- 2016
42. Diverging temperature responses of CO2 assimilation and plant development explain the overall effect of temperature on biomass accumulation in wheat leaves and grains
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Collins, Nicholas C., primary and Parent, Boris, additional
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- 2017
- Full Text
- View/download PDF
43. Phenotyping of plants in competitive but controlled environments: a study of drought response in transgenic wheat
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Kovalchuk, Nataliya, primary, Laga, Hamid, additional, Cai, Jinhai, additional, Kumar, Pankaj, additional, Parent, Boris, additional, Lu, Zhi, additional, Miklavcic, Stanley J., additional, and Haefele, Stephan M., additional
- Published
- 2017
- Full Text
- View/download PDF
44. Predictable ‘meta-mechanisms’ emerge from feedbacks between transpiration and plant growth and cannot be simply deduced from short-term mechanisms
- Author
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Tardieu, François, primary and Parent, Boris, additional
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- 2016
- Full Text
- View/download PDF
45. Adapting the Apsim model for assessing maize cultivars performances through European stressing environments
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Lacube, Sébastien, Tardieu, Francois, Parent, Boris, Hammer, Graeme, 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), Queensland Alliance for Agriculture and Food Innovation (QAAFI), University of Queensland [Brisbane], European Project: 244374,EC:FP7:KBBE,FP7-KBBE-2009-3,DROPS(2010), Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), 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 la Recherche Agronomique (INRA)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro), ProdInra, Migration, and Drought-tolerant yielding plants - DROPS - - EC:FP7:KBBE2010-07-01 - 2015-12-31 - 244374 - VALID
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[SDV.SA]Life Sciences [q-bio]/Agricultural sciences ,[SDV.SA] Life Sciences [q-bio]/Agricultural sciences ,food and beverages ,[SDV.BV]Life Sciences [q-bio]/Vegetal Biology ,[SDV.BV] Life Sciences [q-bio]/Vegetal Biology - Abstract
National audience; Genetic progress will largely depend on the adaptation of new genotypes to the diversity of environments, market requirements and types of agriculture. Most experiments for cultivar evaluation use networks of field experiments to assess the suitability of hundreds of genotypes to environmental conditions. In most cases, most of them run for a few years, thereby taking into account a small fraction of the climatic variability. The use of crop models for predicting plant performance under different climatic conditions (annual variation and/or different locations) is a feasible alternative , assuming that models have an efficient capacity for simulating genotype by environment interactions (i.e. : response of plant to specific environmental conditions using genotypic parameters). If the designed model is convenient, it can be used to analyse the sensitivity of a given trait to changes in specific environment variables, assisting breeding decisions. Our first aim is to adapt the current formalisms of the APSIM model to integrate genotypic variability on key development processes affected by environmental stress, with specific parameters for each genotype that can be measured in a phenotyping platform. For that purpose, a new leaf growth module has been implemented in the model, incorporating genotypic variability of phyllochron, number of leaves and sensitivity of leaf growth to water deficit and vapour pressure deficit. All these parameters are measured in the platform PhenoArch, thereby generating a specific vector of parameters for each genotype. The objective will be to simulate the ranking of different existing genotypes in a grid of locations around Europe and analyse specific traits advantages to define the best suited ideotype for each environmental conditions, under current and future climatic conditions (incorporating climate change scenarios).
- Published
- 2015
46. Control of expansive growth in water deficit: from phenotyping to field simulations
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Parent, Boris, Cabrera Bosquet, Llorenç, Cané, Maria Angela, Chaumont, François, Alvarez Prado, Santiago, CALDEIRA JuNIOR, Cecilio Frois, Lacube, Sébastien, Fleury, Delphine, Welcker, Claude, Tuberosa, Roberto, Tardieu, Francois, 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), Australian Center for Plant Functional Genomics (ACPFG), University of Bologna, Université Catholique de Louvain (UCL), European Project: 244374, University of Bologna/Università di Bologna, Université Catholique de Louvain = Catholic University of Louvain (UCL), Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), and 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 la Recherche Agronomique (INRA)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)
- Subjects
Vegetal Biology ,déficit hydrique ,croissance végétale ,maïs ,Biodiversité et Ecologie ,qtl ,variabilité génétique ,fungi ,croissance foliaire ,food and beverages ,observation au champ ,simulation ,Biodiversity and Ecology ,plateforme de phénotypage ,[SDV.BV]Life Sciences [q-bio]/Vegetal Biology ,[SDE.BE]Environmental Sciences/Biodiversity and Ecology ,Biologie végétale ,architecture de la plante - Abstract
Maintenance of expansive growth under water deficit has been selected as a key target trait of DROPS because of its early response in drying conditions, its large genetic variability, its partially common control with reproductive growth and its consequences on light interception and transpiration. Development of methods to measure shoot growth in Phenotyping platforms (PhenoArch and Phenodyn, M3P, Montpellier, France; The Plant Accelerator, Adelaide, Australia) allowed identification of a large genetic variability in maize, wheat and durum wheat. Three-D characterization of individual plant architecture and of the spatial distribution of light in phenotyping platforms allowed calculation of light interception and of Radiation Use Efficiency (RUE) of hundreds of genotypes. Measurements of leaf elongation rate with a temporal definition of a few minutes allowed comparison of time courses of growth and of physiological variables that are candidate for the control of expansive growth. Overall, these methods resulted in progress in physiological understanding and in dozens of QTLs identified for shoot growth in bread wheat and maize, peduncle in durum wheat, RUE, transpiration and phenology in all three species. The importance of hydraulics in the control of leaf expansion rate (LER) has been demonstrated. Changes in LER occurred over a few minutes upon changes in evaporative demand and soil water status. LER also varied with circadian-driven changes in plant hydraulic conductance in continuous light. Rapid changes of LER with water deficit and evaporative demand are due to stomatal movements and changes in hydraulic conductivity related to aquaporin Plasma Membrane Intrinsic Proteins (PIPs). Both PIP expression and plant hydraulic conductance rapidly changed with environmental conditions and with the circadian clock. In addition to its value, this result was essential to establish a protocol for comparing transcript amounts of PIPs in genotypes of the maize panel (eQTLs). A large genetic variability has been observed for the progression of shoot development (phyllochron), for whole-plant leaf growth and for their responses to water deficit. Accurate QTLs have been identified for each of these variables, which are compared with the positions of QTLs of PIP transcript amounts, and of accumulation of abscisic acid and of metabolites in the leaf. This will results in new insights on the control of growth under water deficit. The position of QTLs of growth in response to drought has been compared to the positions of QTLs of yield in the field in the three species. In addition, the effects of introgressed genomic regions have been analyzed on the growth of several organs (leaf, peduncle, roots) and on yield of durum wheat and maize. The analysis of impact on yield of growth QTLs is based on colocation of QTLs between platforms and fields, and on a model for scaling up the effects of growth in the field. We have designed for that a model of shoot development that takes into account the responses of individual leaves to water deficit and evaporative demand, with parameters that are measured in a phenotyping platform for all genotypes of the panels. The model is incorporated into the crop model APSIM-maize, for estimation of the effect of QTLs of leaf growth on crop yield in hundreds of climatic scenarios, current or future.
- Published
- 2015
47. PHENODYN: a high throughput platform for measurement of organ elongation rate and plant transpiration with high temporal resolution
- Author
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Berthezene, Stephane, Brichet, Nicolas, Negre, Vincent, Parent, Boris, Suard, Benoit, Tireau, Anne, Turc, Olivier, Tardieu, Francois, Welcker, Claude, Écophysiologie des Plantes sous Stress environnementaux (LEPSE), Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), 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 la Recherche Agronomique (INRA)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro), Mathématiques, Informatique et STatistique pour l'Environnement et l'Agronomie (MISTEA), 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 la Recherche Agronomique (INRA), Phenome FPPN, European Project: 244374, ProdInra, Archive Ouverte, European Plant Phenotyping Network - EPPN - - EC:FP7:INFRA2012-01-01 - 2015-12-31 - 284443 - VALID, 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), Institut National de la Recherche Agronomique (INRA)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), European Project: 284443, 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), European Project: 284443,EC:FP7:INFRA,FP7-INFRASTRUCTURES-2011-1,EPPN(2012), 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), and Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro)-Institut National de la Recherche Agronomique (INRA)
- Subjects
Vegetal Biology ,croissance végétale ,déficit hydrique ,maïs ,Biodiversité et Ecologie ,eau du sol ,capteur de mesure ,Biodiversity and Ecology ,plateforme de phénotypage ,système d'information ,transpiration des feuilles ,[SDV.BDD] Life Sciences [q-bio]/Development Biology ,[SDV.BV]Life Sciences [q-bio]/Vegetal Biology ,[SDV.BV] Life Sciences [q-bio]/Vegetal Biology ,[SDE.BE]Environmental Sciences/Biodiversity and Ecology ,[SDV.BDD]Life Sciences [q-bio]/Development Biology ,Biologie végétale - Abstract
Leaf elongation rate (LER) is the first trait affected by water deficit or high evaporative demand, with typical time constants of 30 min for change in LER upon rapid changes in soil water content or air vapour pressure deficit (VPD). The same applies to other organs such as maize silks. Phenodyn (https://www6.montpellier.inra.fr/lepse/M3P/plateforme-PHENODYN) measures organ elongation rate and transpiration rate of hundreds of plants with a temporal resolution of 3 min (or more if required) in order to follow the changes in LER and transpiration in fluctuating conditions of soil water content, evaporative demand and temperature. Phenodyn imposes known soil water potentials to each plant via independent automatic irrigation. Climatic conditions are either imposed in the growth chamber or left to naturally fluctuate in the greenhouse. Elongation rate is measured with 500 rotational displacement transducers with a precision of 0.2 mm. Transpiration and soil water content are measured with scales; changes in weight are attributed to changes in soil water content after correction for the increase in plant biomass. A set of sensors measures meristem temperature, incident light, air temperature and VPD every minute. Phenodyn is associated to an information system for real time monitoring of experiments, post-analysis of large datasets (around 700.000 data points are generated in each experiment) and identification of genotypic parameters such as rates or time constants. It has been used (i) for analyzing the response of LER to soil water potential and to VPD in mapping populations, diversity panel for association genetics or insertion lines, (ii) for establishing response curves to temperature in different species and genotypes, (iii) for following jointly changes in transpiration and in elongation rates of leaves or silks together with hydraulic variables. It has been used in maize, rice, wheat, sorghum, millet, apple tree and vine. Phenodyn is part of the M3P facility (https://www6.montpellier.inra.fr/lepse/M3P). It is accessible to public or private scientists via the website of the national project Phenome-FPPN (https://www.phenome-fppn.fr/).
- Published
- 2015
48. The use of thermal time in plant studies has a sound theoretical basis provided that confounding effects are avoided.
- Author
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Parent, Boris, Millet, Emilie J, and Tardieu, François
- Subjects
- *
CROP growth , *EFFECT of temperature on plants , *MATHEMATICAL models , *PLANT development , *NUMERICAL analysis ,CORN growth - Abstract
The use of thermal time is essential in plant studies and crop growth modeling because correcting time for temperature allows working in fluctuating conditions as if temperature was constant. However, thermal time is often seen as a loose concept because of a multitude of thermal functions and case-specific parameter values. Our hypothesis is that these different formalisms and parameterization could emerge from common principles and a common response of plant development to temperature, but with several counfounding factors which are not taken into account. We first show that these calculations of thermal time are based on sound common principles and mathematical formalisms. We test, via a modelling exercise of nine case studies using maize plants grown in three field sites, how a given "ground truth" response of plant development rate to temperature can be affected if an experimenter either considers or ignores confounding factors. We also show that apparent differences in temperature responses between phenological stages of the growth cycle, between day and night, or between plant genotypes may be due to the confounding effects of evaporative demand, the range of temperatures, and the time interval at which measurements are taken. On the basis of our findings, we propose that the critical point in the use of a given formalism of thermal time calculation is to ensure that the chosen model is compatible with the temporal definition, temperature range, and environmental scenario in the considered dataset. [ABSTRACT FROM AUTHOR]
- Published
- 2019
- Full Text
- View/download PDF
49. Towards parsimonious ecophysiological models that bridge ecology and agronomy
- Author
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Parent, Boris, primary, Vile, Denis, additional, Violle, Cyrille, additional, and Tardieu, François, additional
- Published
- 2016
- Full Text
- View/download PDF
50. Constitutive overexpression of theTaNF-YB4gene in transgenic wheat significantly improves grain yield
- Author
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Yadav, Dinesh, primary, Shavrukov, Yuri, additional, Bazanova, Natalia, additional, Chirkova, Larissa, additional, Borisjuk, Nikolai, additional, Kovalchuk, Nataliya, additional, Ismagul, Ainur, additional, Parent, Boris, additional, Langridge, Peter, additional, Hrmova, Maria, additional, and Lopato, Sergiy, additional
- Published
- 2015
- Full Text
- View/download PDF
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