Search

Your search keyword '"Écophysiologie des Plantes sous Stress environnementaux (LEPSE)"' showing total 4 results
Start Over Author "Écophysiologie des Plantes sous Stress environnementaux (LEPSE)" Journal frontiers in plant science
4 results on '"Écophysiologie des Plantes sous Stress environnementaux (LEPSE)"'

1. A Perspective on Plant Phenomics: Coupling Deep Learning and Near-Infrared Spectroscopy

Author

François Vasseur, Denis Cornet, Grégory Beurier, Julie Messier, Lauriane Rouan, Justine Bresson, Martin Ecarnot, Mark Stahl, Simon Heumos, Marianne Gérard, Hans Reijnen, Pascal Tillard, Benoît Lacombe, Amélie Emanuel, Justine Floret, Aurélien Estarague, Stefania Przybylska, Kevin Sartori, Lauren M. Gillespie, Etienne Baron, Elena Kazakou, Denis Vile, Cyrille Violle, 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), Amélioration génétique et adaptation des plantes méditerranéennes et tropicales (UMR AGAP), 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, University of Waterloo [Waterloo], Département Systèmes Biologiques (Cirad-BIOS), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad), University of Tübingen, Institut des Sciences des Plantes de Montpellier (IPSIM), Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut Agro Montpellier, 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), ANR-17-CE02-0018-01 Exploration des réponses évolutives des plantes à des changements environnementaux à la lumière des théories écologiques : un test expérimental chez l’espèce modèle Arabidopsis thaliana – AraBreed, Centre National de la Recherche Scientifique (CNRS)European Commission, German Research Foundation (DFG)INST 37/696-1 FUGG, ANR-17-CE02-0018,AraBreed,Exploration des réponses évolutives des plantes à des changements environnementaux à la lumière des théories écologiques : un test expérimental chez l'espèce modèle Arabidopsis thaliana(2017), and European Project: 639706,H2020,ERC-2014-STG,CONSTRAINTS(2015)

Subjects
multivariate analysis, machine learning, Arabidopsis thaliana, [SDV]Life Sciences [q-bio], near-infrared spectroscopy (NIRS), trait-based ecology, [SDV.BV]Life Sciences [q-bio]/Vegetal Biology, functional traits, Plant Science, metabolomics
Abstract

International audience; The trait-based approach in plant ecology aims at understanding and classifying the diversity of ecological strategies by comparing plant morphology and physiology across organisms. The major drawback of the approach is that the time and financial cost of measuring the traits on many individuals and environments can be prohibitive. We show that combining near-infrared spectroscopy (NIRS) with deep learning resolves this limitation by quickly, non-destructively, and accurately measuring a suite of traits, including plant morphology, chemistry, and metabolism. Such an approach also allows to position plants within the well-known CSR triangle that depicts the diversity of plant ecological strategies. The processing of NIRS through deep learning identifies the effect of growth conditions on trait values, an issue that plagues traditional statistical approaches. Together, the coupling of NIRS and deep learning is a promising high-throughput approach to capture a range of ecological information on plant diversity and functioning and can accelerate the creation of extensive trait databases.

Published
2022

2. Co-inoculation of a Pea Core-Collection with Diverse Rhizobial Strains Shows Competitiveness for Nodulation and Efficiency of Nitrogen Fixation Are Distinct traits in the Interaction

Author

Catherine Delaitre, Marianne Chabert-Martinello, Brigitte Brunel, Marc Lepetit, Mathieu Siol, Denis Vile, Pierre Tisseyre, Gérard Duc, Véronique Aubert, Marjorie Pervent, Judith Burstin, Virginie Bourion, Karine Heulin-Gotty, Agroécologie [Dijon], Université de Bourgogne (UB)-Institut National de la Recherche Agronomique (INRA)-Université Bourgogne Franche-Comté [COMUE] (UBFC)-AgroSup Dijon - Institut National Supérieur des Sciences Agronomiques, de l'Alimentation et de l'Environnement, Laboratoire des symbioses tropicales et méditerranéennes (UMR LSTM), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Université Montpellier 1 (UM1)-Institut de Recherche pour le Développement (IRD)-Institut National de la Recherche Agronomique (INRA)-Université Montpellier 2 - Sciences et Techniques (UM2)-Université de Montpellier (UM)-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), 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), French ANR GENOPEA program, 'INRA-BAP projet scientifique' SYMBIOPEA program, ANR-09-GENM-0026,GENOPEA,Génomique comparative du cycle de l'azote entre M. truncatula et le pois : étude des potentialités de transfert des connaissances entre espèces modèles et cultivées(2009), Institut National de la Recherche Agronomique (INRA)-Université de Bourgogne (UB)-AgroSup Dijon - Institut National Supérieur des Sciences Agronomiques, de l'Alimentation et de l'Environnement-Université Bourgogne Franche-Comté [COMUE] (UBFC), and 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
0301 basic medicine, competitiveness for nodulation, Plant Science, lcsh:Plant culture, Biology, medicine.disease_cause, Genetic diversity, Plant breeding, Rhizobium leguminosarum, Pisum, 03 medical and health sciences, plant breeding, medicine, [SDV.BV]Life Sciences [q-bio]/Vegetal Biology, nodulation, lcsh:SB1-1110, Partner choice, Competitiveness for nodulation, Pea-rhizobium symbiosis, Nitrogen fixation efficiency, Pisum sativum, Rhizobium leguminosarum sv. viciae, rhizobium leguminosarum, Microbial inoculant, pea-rhizobium symbiosis, Original Research, 2. Zero hunger, Vegetal Biology, Strain (biology), food and beverages, genetic diversity, biology.organism_classification, nitrogen fixation efficiency, 030104 developmental biology, Agronomy, fixation de l'azote, diversité génétique, partner choice, Nitrogen fixation, Co inoculation, Biologie végétale, amélioration des plantes
Abstract

International audience; Pea forms symbiotic nodules with Rhizobium leguminosarum sv. viciae (Rlv). In the field, pea roots can be exposed to multiple compatible Rlv strains. Little is known about the mechanisms underlying the competitiveness for nodulation of Rlv strains and the ability of pea to choose between diverse compatible Rlv strains. The variability of pea-Rlv partner choice was investigated by co-inoculation with a mixture of five diverse Rlv strains of a 104-pea collection representative of the variability encountered in the genus Pisum. The nitrogen fixation efficiency conferred by each strain was determined in additional mono-inoculation experiments on a subset of 18 pea lines displaying contrasted Rlv choice. Differences in Rlv choice were observed within the pea collection according to their genetic or geographical diversities. The competitiveness for nodulation of a given pea-Rlv association evaluated in the multi-inoculated experiment was poorly correlated with its nitrogen fixation efficiency determined in mono-inoculation. Both plant and bacterial genetic determinants contribute to pea-Rlv partner choice. No evidence was found for co-selection of competitiveness for nodulation and nitrogen fixation efficiency. Plant and inoculant for an improved symbiotic association in the field must be selected not only on nitrogen fixation efficiency but also for competitiveness for nodulation.

Published
2018

3. Ear Rachis Xylem Occlusion and Associated Loss in Hydraulic Conductance Coincide with the End of Grain Filling for Wheat

Author

Nicole Brunel, Hervé Cochard, Pierre Martre, Hayet Neghliz, Laboratoire d’Ecophysiologie Végétale, École normale supérieure - Kouba-Alger (ENS Kouba-Alger), Génétique Diversité et Ecophysiologie des Céréales (GDEC), Institut National de la Recherche Agronomique (INRA)-Université Blaise Pascal - Clermont-Ferrand 2 (UBP), Laboratoire de Physique et Physiologie Intégratives de l'Arbre Fruitier et Forestier (PIAF), 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 - Clermont Auvergne (GDEC), Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Université Clermont Auvergne (UCA), Laboratoire de Physique et Physiologie Intégratives de l’Arbre en environnement Fluctuant - Clermont Auvergne (PIAF), Institut National de la Recherche Agronomique (INRA)-Université Clermont Auvergne (UCA), 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 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), and Université Blaise Pascal - Clermont-Ferrand 2 (UBP)-Institut National de la Recherche Agronomique (INRA)

Subjects
0106 biological sciences, Stomatal conductance, hydraulic conductance, [SDV.BC]Life Sciences [q-bio]/Cellular Biology, Plant Science, Biology, xylem, Seed dehydration, 01 natural sciences, chemistry.chemical_compound, medicine, [SDV.BV]Life Sciences [q-bio]/Vegetal Biology, [SDV.BBM]Life Sciences [q-bio]/Biochemistry, Molecular Biology, Dehydration, triticum aestivum, conductance hydraulique, seed filling, grain de blé, grain maturation, Plant stem, Transpiration, Original Research, grain development, 2. Zero hunger, Vegetal Biology, xylème, Callose, fungi, Xylem, Plant physiology, food and beverages, 04 agricultural and veterinary sciences, medicine.disease, Agronomy, chemistry, xylem occlusion, polysaccharide, [SDE]Environmental Sciences, remplissage du grain, wheat (Triticum aestivum L.), 040103 agronomy & agriculture, 0401 agriculture, forestry, and fisheries, Biologie végétale, 010606 plant biology & botany, xylem embolism
Abstract

International audience; Seed dehydration is the normal terminal event in the development of orthodox seeds and is physiologically related to the cessation of grain dry mass accumulation and crop grain yield. For a better understanding of grain dehydration, we evaluated the hypothesis that hydraulic conductance of the ear decreases during the latter stages of development and that this decrease results from disruption or occlusion of xylem conduits. Whole ear, rachis, and stem nodes hydraulic conductance and percentage loss of xylem conductivity were measured from flowering to harvest-ripeness on bread wheat (Triticum aestivum L.) cv. Récital grown under controlled environments. Flag leaf transpiration, stomatal conductance, chlorophyll content and grain and ear water potentials were also measured during grain development. We show that grain dehydration was not related with whole plant physiology and leaf senescence, but closely correlated with the hydraulic properties of the xylem conduits irrigating the grains. Indeed, there was a substantial decrease in rachis hydraulic conductance at the onset of the grain dehydration phase. This hydraulic impairment was not caused by the presence of air embolism in xylem conduits of the stem internodes or rachis but by the occlusion of the xylem lumens by polysaccharides (pectins and callose). Our results demonstrate that xylem hydraulics plays a key role during grain maturation.

Published
2016

4. Buffering growth variations against water deficits through timely carbon usage

Author

Anne Laure Fanciullino, Thierry Simonneau, Florent Pantin, Bertrand Muller, Myriam Dauzat, Catherine Massonnet, 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), Unité de recherche Plantes et Systèmes de Culture Horticoles (PSH), Institut National de la Recherche Agronomique (INRA), Génétique et Ecophysiologie de la qualité des agrumes (GEQA), Commission Européenne FP6 AGRO-NOMICS, 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’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
0106 biological sciences, Increased carbohydrate, Plant growth, Carbon metabolism, croissance végétale, carbon starvation, VPD, croissance foliaire, Soil water deficit, chemistry.chemical_element, water deficit, growth patterns, starch metabolism, fruit growth, leaf growth, carbon satiation, Plant Science, lcsh:Plant culture, Biology, Photosynthesis, 01 natural sciences, compétition source puits, 03 medical and health sciences, Botany, [SDV.BV]Life Sciences [q-bio]/Vegetal Biology, lcsh:SB1-1110, Original Research Article, Sugar, 030304 developmental biology, 2. Zero hunger, 0303 health sciences, Vegetal Biology, déficit hydrique, arabidopsis thaliana, 15. Life on land, Carbohydrate, croissance du fruit, Agronomy, chemistry, écophysiologie végétale, Carbon, Biologie végétale, 010606 plant biology & botany
Abstract

Water stresses reduce plant growth but there is no consensus on whether carbon metabolism has any role in this reduction. Sugar starvation resulting from stomatal closure is often proposed as a cause of growth impairment under long-term or severe water deficits. However, growth decreases faster than photosynthesis in response to drought, leading to increased carbohydrate stores under short-term or moderate water deficits. Here, we addressed the question of the role of carbon availability on growth under moderate water deficits using two different systems. Firstly, we monitored the day/night pattern of leaf growth in Arabidopsis plants. We show that a moderate soil water deficit promotes leaf growth at night in mutants severely disrupted in their nighttime carbohydrate availability. This suggests that soil water deficit promotes carbon satiation. Secondly, we monitored the sub-hourly growth fluctuations of clementine fruits in response to daily, natural fluctuation in air water deficit, and at contrasting source-sink balance obtained by defoliation. We show that high carbohydrate levels obtained under favourable source-sink balance prevent excessive, hydraulic shrinkage of the fruit during days with high evaporative demand, most probably by modulating osmotic adjustment. Together, our results contribute to the view that growing organs under moderate soil or air water deficit are not carbon starved, but use soluble carbohydrate in excess to partly release a hydromechanical limitation of growth.

Published
2013
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results