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Your search keyword '"Écophysiologie des Plantes sous Stress environnementaux (LEPSE)"' showing total 3 results
Start Over Author "Écophysiologie des Plantes sous Stress environnementaux (LEPSE)" Journal current opinion in plant biology
3 results on '"Écophysiologie des Plantes sous Stress environnementaux (LEPSE)"'

1. The case for improving crop carbon sink strength or plasticity for a CO2-rich future

Author

Matthew J. Paul, Michaël Dingkuhn, Denis Fabre, Bertrand Muller, Xinyou Yin, Delphine Luquet, 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), 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), Département Systèmes Biologiques (Cirad-BIOS), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad), 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), Wageningen University and Research [Wageningen] (WUR), Rothamsted Research, strategic funding from the Biotechnological Sciences Research Council of the UK, Designing Future Wheat Strategic Programme (BB/P016855/1), and CGIAR Research Program Rice (CRP-RICE)

Subjects
0106 biological sciences, 0301 basic medicine, Crop Physiology, F60 - Physiologie et biochimie végétale, Plant Science, Biology, Photosynthesis, 01 natural sciences, Acclimatization, Sink (geography), 03 medical and health sciences, Life Science, [SDV.BV]Life Sciences [q-bio]/Vegetal Biology, Domestication, Génie génétique, 2. Zero hunger, Abiotic component, [SDV.EE]Life Sciences [q-bio]/Ecology, environment, geography, Phenotypic plasticity, geography.geographical_feature_category, Carbon sink, genetic engineering, Ideotype, 15. Life on land, PE&RC, Amélioration des plantes, source-sink interactions, séquestration du carbone, [SDV.BV.AP]Life Sciences [q-bio]/Vegetal Biology/Plant breeding, 030104 developmental biology, Agronomy, Atmospheric CO2, 010606 plant biology & botany
Abstract

Atmospheric CO2 concentration [CO2] has increased from 260 to 280 μmol mol−1 (level during crop domestication up to the industrial revolution) to currently 400 and will reach 550 μmol mol−1 by 2050. C3 crops are expected to benefit from elevated [CO2] (e-CO2) thanks to photosynthesis responsiveness to [CO2] but this may require greater sink capacity. We review recent literature on crop e-CO2 responses, related source-sink interactions, how abiotic stresses potentially interact, and prospects to improve e-CO2 response via breeding or genetic engineering. Several lines of evidence suggest that e-CO2 responsiveness is related either to sink intrinsic capacity or adaptive plasticity, for example, involving enhanced branching. Wild relatives and old cultivars mostly showed lower photosynthetic rates, less downward acclimation of photosynthesis to e-CO2 and responded strongly to e-CO2 due to greater phenotypic plasticity. While reverting to such archaic traits would be an inappropriate strategy for breeding, we argue that substantial enhancement of vegetative sink vigor, inflorescence size and/or number and root sinks will be necessary to fully benefit from e-CO2. Potential ideotype features based on enhanced sinks are discussed. The generic 'feast-famine' sugar signaling pathway may be suited to engineer sink strength tissue-specifically and stage-specifically and help validate ideotype concepts. Finally, we argue that models better accounting for acclimation to e-CO2 are needed to predict which trait combinations should be targeted by breeders for a CO2-rich world.

Published
2020

2. Phenotyping and beyond: modelling the relationships between traits

Author

Denis Vile, Christine Granier, 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), DAGOLIGN Research Training Network (an European Community Human Potential Program) [HPRN-CT-2002-00267], Institut National de Recherches Agronomiques (INRA, 'Ecogene'), GABI-GENOPLANTE project [AF 2001 094], GENOPLANTE [GPLA-06014G], ARABRAS [ERAPG-003-03], AGRONOMICS Integrated Project - sixth European Framework Programme [LSHG-CT-2006-037704], European Union [284443], EIT Climate-KIC project AgWaterBreed, European Project: 284443,EC:FP7:INFRA,FP7-INFRASTRUCTURES-2011-1,EPPN(2012), 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
business.industry, Plant Science, 15. Life on land, Biology, Plant phenotyping, Models, Biological, Data science, Biotechnology, Phenotype, Quantitative Trait, Heritable, Databases as Topic, [SDV.BV]Life Sciences [q-bio]/Vegetal Biology, Plant traits, business
Abstract

International audience; Plant phenotyping technology has become more advanced with the capacity to measure many morphological and physiological traits on a given individual. With increasing automation, getting access to various traits on a high number of genotypes over time raises the need to develop systems for data storage and analyses, all congregating into plant phenotyping pipelines. In this review, we highlight several studies that illustrate the latest advances in plant multi-trait phenotyping and discuss future needs to ensure the best use of all these quantitative data. We assert that the next challenge is to disentangle how plant traits are embedded in networks of dependencies (and independencies) by modelling the relationships between them and how these are affected by genetics and environment.

Published
2014

3. Water deficit and growth. Co-ordinating processes without an orchestrator?

Author

François Tardieu, Christine Granier, Bertrand Muller, 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
0106 biological sciences, Plant growth, Carbon metabolism, Cell division, Cell number, Plant Development, Plant Science, Biology, Breeding, Environment, 01 natural sciences, Models, Biological, Water deficit, 03 medical and health sciences, Soil, Cell Wall, Stress, Physiological, BIOLOGIE DU DEVELOPPEMENT, [SDV.BV]Life Sciences [q-bio]/Vegetal Biology, RELATION SOURCE-PUITS, 030304 developmental biology, Feedback, Physiological, 0303 health sciences, Ecology, Direct effects, Water, Plant Transpiration, ECOPHYSIOLOGIE, Plants, Plant biology, Carbon, Droughts, Plant development, Biophysics, Cell Division, 010606 plant biology & botany
Abstract

Water deficit affects plant growth via reduced carbon accumulation, cell number and tissue expansion. We review the ways in which these processes are co-ordinated. Tissue expansion and its sensitivity to water deficit may be the most crucial process, involving tight co-ordination between the mechanisms which govern cell wall mechanical properties and plant hydraulics. The analyses of sensitivities, time constants and genetic correlations suggest that tissue expansion is loosely co-ordinated with cell division and carbon accumulation which may have limited direct effects on growth under water deficit. We therefore argue for essentially uncoupled mechanisms with feedbacks between them, rather than for a co-ordinated re-programming of all processes. Consequences on plant modelling and plant breeding in dry environment are discussed.

Published
2010

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