Differential CO2 effect on primary carbon metabolism of flag leaves in durum wheat (Triticum durum Desf.).
Identifieur interne : 002F23 ( Main/Exploration ); précédent : 002F22; suivant : 002F24Differential CO2 effect on primary carbon metabolism of flag leaves in durum wheat (Triticum durum Desf.).
Auteurs : Iker Aranjuelo [Espagne] ; Gorka Erice [États-Unis] ; Alvaro Sanz-Sáez [États-Unis] ; Cyril Abadie [France] ; Françoise Gilard [France] ; Erena Gil-Quintana [Espagne] ; Jean-Christophe Avice [France] ; Christiana Staudinger [Autriche] ; Stefanie Wienkoop [Autriche] ; Jose L. Araus [Espagne] ; Jacques Bourguignon [France] ; Juan J. Irigoyen [Espagne] ; Guillaume Tcherkez [Australie]Source :
- Plant, cell & environment [ 1365-3040 ] ; 2015.
Descripteurs français
- KwdFr :
- Acclimatation, Azote (métabolisme), Biomasse, Carbone (métabolisme), Dioxyde de carbone (pharmacologie), Feuilles de plante (), Feuilles de plante (physiologie), Grains comestibles, Lysine (métabolisme), Métabolomique, Photosynthèse, Ribulose bisphosphate carboxylase (métabolisme), Transfert d'électrons, Triticum (), Triticum (physiologie).
- MESH :
- métabolisme : Azote, Carbone, Lysine, Ribulose bisphosphate carboxylase.
- pharmacologie : Dioxyde de carbone.
- physiologie : Feuilles de plante, Triticum.
- Acclimatation, Biomasse, Feuilles de plante, Grains comestibles, Métabolomique, Photosynthèse, Transfert d'électrons, Triticum.
English descriptors
- KwdEn :
- Acclimatization, Biomass, Carbon (metabolism), Carbon Dioxide (pharmacology), Edible Grain, Electron Transport, Lysine (metabolism), Metabolomics, Nitrogen (metabolism), Photosynthesis, Plant Leaves (drug effects), Plant Leaves (physiology), Ribulose-Bisphosphate Carboxylase (metabolism), Triticum (drug effects), Triticum (physiology).
- MESH :
- chemical , metabolism : Carbon, Lysine, Nitrogen, Ribulose-Bisphosphate Carboxylase.
- chemical , pharmacology : Carbon Dioxide.
- drug effects : Plant Leaves, Triticum.
- physiology : Plant Leaves, Triticum.
- Acclimatization, Biomass, Edible Grain, Electron Transport, Metabolomics, Photosynthesis.
Abstract
C sink/source balance and N assimilation have been identified as target processes conditioning crop responsiveness to elevated CO2 . However, little is known about phenology-driven modifications of C and N primary metabolism at elevated CO2 in cereals such as wheat. Here, we examined the differential effect of elevated CO2 at two development stages (onset of flowering, onset of grain filling) in durum wheat (Triticum durum, var. Sula) using physiological measurements (photosynthesis, isotopes), metabolomics, proteomics and (15) N labelling. Our results show that growth at elevated CO2 was accompanied by photosynthetic acclimation through a lower internal (mesophyll) conductance but no significant effect on Rubisco content, maximal carboxylation or electron transfer. Growth at elevated CO2 altered photosynthate export and tended to accelerate leaf N remobilization, which was visible for several proteins and amino acids, as well as lysine degradation metabolism. However, grain biomass produced at elevated CO2 was larger and less N rich, suggesting that nitrogen use efficiency rather than photosynthesis is an important target for improvement, even in good CO2 -responsive cultivars.
DOI: 10.1111/pce.12587
PubMed: 26081746
Affiliations:
- Australie, Autriche, Espagne, France, États-Unis
- Basse-Normandie, Vienne (Autriche), Île-de-France
- Caen, Orsay, Vienne (Autriche)
- Université Paris-Sud, Université de Caen Basse-Normandie
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Le document en format XML
<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en">Differential CO2 effect on primary carbon metabolism of flag leaves in durum wheat (Triticum durum Desf.).</title><author><name sortKey="Aranjuelo, Iker" sort="Aranjuelo, Iker" uniqKey="Aranjuelo I" first="Iker" last="Aranjuelo">Iker Aranjuelo</name><affiliation wicri:level="1"><nlm:affiliation>Plant Biology and Ecology Department, Science and Technology Faculty, University of the Basque Country, Leioa, 48940, Spain.</nlm:affiliation><country xml:lang="fr">Espagne</country><wicri:regionArea>Plant Biology and Ecology Department, Science and Technology Faculty, University of the Basque Country, Leioa, 48940</wicri:regionArea><wicri:noRegion>48940</wicri:noRegion></affiliation></author><author><name sortKey="Erice, Gorka" sort="Erice, Gorka" uniqKey="Erice G" first="Gorka" last="Erice">Gorka Erice</name><affiliation wicri:level="1"><nlm:affiliation>Institute for Genomic Biology, University of Illinois, Urbana-Champaign, Urbana, IL, 61801, USA.</nlm:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>Institute for Genomic Biology, University of Illinois, Urbana-Champaign, Urbana, IL, 61801</wicri:regionArea><wicri:noRegion>61801</wicri:noRegion></affiliation></author><author><name sortKey="Sanz Saez, Alvaro" sort="Sanz Saez, Alvaro" uniqKey="Sanz Saez A" first="Alvaro" last="Sanz-Sáez">Alvaro Sanz-Sáez</name><affiliation wicri:level="1"><nlm:affiliation>Department of Plant Biology and Crop Science, University of Illinois, Urbana-Champaign, Urbana, IL, 61801, USA.</nlm:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>Department of Plant Biology and Crop Science, University of Illinois, Urbana-Champaign, Urbana, IL, 61801</wicri:regionArea><wicri:noRegion>61801</wicri:noRegion></affiliation></author><author><name sortKey="Abadie, Cyril" sort="Abadie, Cyril" uniqKey="Abadie C" first="Cyril" last="Abadie">Cyril Abadie</name><affiliation wicri:level="4"><nlm:affiliation>Plateforme Métabolisme-Métabolome, Institut de Biologie des Plantes, Université Paris-Sud, Orsay, 91405, France.</nlm:affiliation><country xml:lang="fr">France</country><wicri:regionArea>Plateforme Métabolisme-Métabolome, Institut de Biologie des Plantes, Université Paris-Sud, Orsay, 91405</wicri:regionArea><wicri:noRegion>91405</wicri:noRegion><orgName type="university">Université Paris-Sud</orgName><placeName><settlement type="city">Orsay</settlement><region type="region" nuts="2">Île-de-France</region></placeName></affiliation></author><author><name sortKey="Gilard, Francoise" sort="Gilard, Francoise" uniqKey="Gilard F" first="Françoise" last="Gilard">Françoise Gilard</name><affiliation wicri:level="4"><nlm:affiliation>Plateforme Métabolisme-Métabolome, Institut de Biologie des Plantes, Université Paris-Sud, Orsay, 91405, France.</nlm:affiliation><country xml:lang="fr">France</country><wicri:regionArea>Plateforme Métabolisme-Métabolome, Institut de Biologie des Plantes, Université Paris-Sud, Orsay, 91405</wicri:regionArea><wicri:noRegion>91405</wicri:noRegion><orgName type="university">Université Paris-Sud</orgName><placeName><settlement type="city">Orsay</settlement><region type="region" nuts="2">Île-de-France</region></placeName></affiliation></author><author><name sortKey="Gil Quintana, Erena" sort="Gil Quintana, Erena" uniqKey="Gil Quintana E" first="Erena" last="Gil-Quintana">Erena Gil-Quintana</name><affiliation wicri:level="1"><nlm:affiliation>Dpto. Ciencias del Medio Natural, Universidad Pública de Navarra Campus de Arrosadía, Pamplona, 31006, Spain.</nlm:affiliation><country xml:lang="fr">Espagne</country><wicri:regionArea>Dpto. Ciencias del Medio Natural, Universidad Pública de Navarra Campus de Arrosadía, Pamplona, 31006</wicri:regionArea><wicri:noRegion>31006</wicri:noRegion></affiliation></author><author><name sortKey="Avice, Jean Christophe" sort="Avice, Jean Christophe" uniqKey="Avice J" first="Jean-Christophe" last="Avice">Jean-Christophe Avice</name><affiliation wicri:level="4"><nlm:affiliation>Ecophysiologie Végétale, Agronomie et Nutritions NCS, INRA, UMR INRA/UCBN, Institut de Biologie Fondamentale et Appliquée, Université de Caen Basse-Normandie, Caen, 14032, France.</nlm:affiliation><country xml:lang="fr">France</country><wicri:regionArea>Ecophysiologie Végétale, Agronomie et Nutritions NCS, INRA, UMR INRA/UCBN, Institut de Biologie Fondamentale et Appliquée, Université de Caen Basse-Normandie, Caen, 14032</wicri:regionArea><wicri:noRegion>14032</wicri:noRegion><orgName type="university">Université de Caen Basse-Normandie</orgName><placeName><settlement type="city">Caen</settlement><region type="region" nuts="2">Basse-Normandie</region></placeName></affiliation></author><author><name sortKey="Staudinger, Christiana" sort="Staudinger, Christiana" uniqKey="Staudinger C" first="Christiana" last="Staudinger">Christiana Staudinger</name><affiliation wicri:level="3"><nlm:affiliation>Department of Ecogenomics and Systems Biology, University of Vienna, Vienna, 1090, Austria.</nlm:affiliation><country xml:lang="fr">Autriche</country><wicri:regionArea>Department of Ecogenomics and Systems Biology, University of Vienna, Vienna, 1090</wicri:regionArea><placeName><region type="land" nuts="2">Vienne (Autriche)</region><settlement type="city">Vienne (Autriche)</settlement></placeName></affiliation></author><author><name sortKey="Wienkoop, Stefanie" sort="Wienkoop, Stefanie" uniqKey="Wienkoop S" first="Stefanie" last="Wienkoop">Stefanie Wienkoop</name><affiliation wicri:level="3"><nlm:affiliation>Department of Ecogenomics and Systems Biology, University of Vienna, Vienna, 1090, Austria.</nlm:affiliation><country xml:lang="fr">Autriche</country><wicri:regionArea>Department of Ecogenomics and Systems Biology, University of Vienna, Vienna, 1090</wicri:regionArea><placeName><region type="land" nuts="2">Vienne (Autriche)</region><settlement type="city">Vienne (Autriche)</settlement></placeName></affiliation></author><author><name sortKey="Araus, Jose L" sort="Araus, Jose L" uniqKey="Araus J" first="Jose L" last="Araus">Jose L. Araus</name><affiliation wicri:level="1"><nlm:affiliation>Dpto de Biología Vegetal, Facultat de Biologia, Universidad de Barcelona, Barcelona, 08028, Spain.</nlm:affiliation><country xml:lang="fr">Espagne</country><wicri:regionArea>Dpto de Biología Vegetal, Facultat de Biologia, Universidad de Barcelona, Barcelona, 08028</wicri:regionArea><wicri:noRegion>08028</wicri:noRegion></affiliation></author><author><name sortKey="Bourguignon, Jacques" sort="Bourguignon, Jacques" uniqKey="Bourguignon J" first="Jacques" last="Bourguignon">Jacques Bourguignon</name><affiliation wicri:level="1"><nlm:affiliation>Laboratoire Physiologie Cellulaire Végétale (PCV), CEA, iRTSV, Grenoble, 38054, France.</nlm:affiliation><country xml:lang="fr">France</country><wicri:regionArea>Laboratoire Physiologie Cellulaire Végétale (PCV), CEA, iRTSV, Grenoble, 38054</wicri:regionArea><wicri:noRegion>38054</wicri:noRegion><wicri:noRegion>38054</wicri:noRegion></affiliation></author><author><name sortKey="Irigoyen, Juan J" sort="Irigoyen, Juan J" uniqKey="Irigoyen J" first="Juan J" last="Irigoyen">Juan J. Irigoyen</name><affiliation wicri:level="1"><nlm:affiliation>Grupo de Fisiología del Estrés en Plantas (Dpto. de Biología Ambiental), Unidad Asociada al CSIC, EEAD, Zaragoza e ICVV, Logroño, Facultades de Ciencias yFarmacia, Universidad de Navarra, Pamplona, 31008, Spain.</nlm:affiliation><country xml:lang="fr">Espagne</country><wicri:regionArea>Grupo de Fisiología del Estrés en Plantas (Dpto. de Biología Ambiental), Unidad Asociada al CSIC, EEAD, Zaragoza e ICVV, Logroño, Facultades de Ciencias yFarmacia, Universidad de Navarra, Pamplona, 31008</wicri:regionArea><wicri:noRegion>31008</wicri:noRegion></affiliation></author><author><name sortKey="Tcherkez, Guillaume" sort="Tcherkez, Guillaume" uniqKey="Tcherkez G" first="Guillaume" last="Tcherkez">Guillaume Tcherkez</name><affiliation wicri:level="1"><nlm:affiliation>Research School of Biology, College of Medicine, Biology and Environment, Australian National University, Canberra, Australian Capital Territory, 2601, Australia.</nlm:affiliation><country xml:lang="fr">Australie</country><wicri:regionArea>Research School of Biology, College of Medicine, Biology and Environment, Australian National University, Canberra, Australian Capital Territory, 2601</wicri:regionArea><wicri:noRegion>2601</wicri:noRegion></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">PubMed</idno><date when="2015">2015</date><idno type="RBID">pubmed:26081746</idno><idno type="pmid">26081746</idno><idno type="doi">10.1111/pce.12587</idno><idno type="wicri:Area/PubMed/Corpus">002628</idno><idno type="wicri:explorRef" wicri:stream="PubMed" wicri:step="Corpus" wicri:corpus="PubMed">002628</idno><idno type="wicri:Area/PubMed/Curation">002559</idno><idno type="wicri:explorRef" wicri:stream="PubMed" wicri:step="Curation">002559</idno><idno type="wicri:Area/PubMed/Checkpoint">002559</idno><idno type="wicri:explorRef" wicri:stream="Checkpoint" wicri:step="PubMed">002559</idno><idno 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48940</wicri:regionArea><wicri:noRegion>48940</wicri:noRegion></affiliation></author><author><name sortKey="Erice, Gorka" sort="Erice, Gorka" uniqKey="Erice G" first="Gorka" last="Erice">Gorka Erice</name><affiliation wicri:level="1"><nlm:affiliation>Institute for Genomic Biology, University of Illinois, Urbana-Champaign, Urbana, IL, 61801, USA.</nlm:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>Institute for Genomic Biology, University of Illinois, Urbana-Champaign, Urbana, IL, 61801</wicri:regionArea><wicri:noRegion>61801</wicri:noRegion></affiliation></author><author><name sortKey="Sanz Saez, Alvaro" sort="Sanz Saez, Alvaro" uniqKey="Sanz Saez A" first="Alvaro" last="Sanz-Sáez">Alvaro Sanz-Sáez</name><affiliation wicri:level="1"><nlm:affiliation>Department of Plant Biology and Crop Science, University of Illinois, Urbana-Champaign, Urbana, IL, 61801, USA.</nlm:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>Department of Plant Biology and Crop Science, University of Illinois, Urbana-Champaign, Urbana, IL, 61801</wicri:regionArea><wicri:noRegion>61801</wicri:noRegion></affiliation></author><author><name sortKey="Abadie, Cyril" sort="Abadie, Cyril" uniqKey="Abadie C" first="Cyril" last="Abadie">Cyril Abadie</name><affiliation wicri:level="4"><nlm:affiliation>Plateforme Métabolisme-Métabolome, Institut de Biologie des Plantes, Université Paris-Sud, Orsay, 91405, France.</nlm:affiliation><country xml:lang="fr">France</country><wicri:regionArea>Plateforme Métabolisme-Métabolome, Institut de Biologie des Plantes, Université Paris-Sud, Orsay, 91405</wicri:regionArea><wicri:noRegion>91405</wicri:noRegion><orgName type="university">Université Paris-Sud</orgName><placeName><settlement type="city">Orsay</settlement><region type="region" nuts="2">Île-de-France</region></placeName></affiliation></author><author><name sortKey="Gilard, Francoise" sort="Gilard, Francoise" uniqKey="Gilard F" first="Françoise" last="Gilard">Françoise Gilard</name><affiliation wicri:level="4"><nlm:affiliation>Plateforme Métabolisme-Métabolome, Institut de Biologie des Plantes, Université Paris-Sud, Orsay, 91405, France.</nlm:affiliation><country xml:lang="fr">France</country><wicri:regionArea>Plateforme Métabolisme-Métabolome, Institut de Biologie des Plantes, Université Paris-Sud, Orsay, 91405</wicri:regionArea><wicri:noRegion>91405</wicri:noRegion><orgName type="university">Université Paris-Sud</orgName><placeName><settlement type="city">Orsay</settlement><region type="region" nuts="2">Île-de-France</region></placeName></affiliation></author><author><name sortKey="Gil Quintana, Erena" sort="Gil Quintana, Erena" uniqKey="Gil Quintana E" first="Erena" last="Gil-Quintana">Erena Gil-Quintana</name><affiliation wicri:level="1"><nlm:affiliation>Dpto. Ciencias del Medio Natural, Universidad Pública de Navarra Campus de Arrosadía, Pamplona, 31006, Spain.</nlm:affiliation><country xml:lang="fr">Espagne</country><wicri:regionArea>Dpto. Ciencias del Medio Natural, Universidad Pública de Navarra Campus de Arrosadía, Pamplona, 31006</wicri:regionArea><wicri:noRegion>31006</wicri:noRegion></affiliation></author><author><name sortKey="Avice, Jean Christophe" sort="Avice, Jean Christophe" uniqKey="Avice J" first="Jean-Christophe" last="Avice">Jean-Christophe Avice</name><affiliation wicri:level="4"><nlm:affiliation>Ecophysiologie Végétale, Agronomie et Nutritions NCS, INRA, UMR INRA/UCBN, Institut de Biologie Fondamentale et Appliquée, Université de Caen Basse-Normandie, Caen, 14032, France.</nlm:affiliation><country xml:lang="fr">France</country><wicri:regionArea>Ecophysiologie Végétale, Agronomie et Nutritions NCS, INRA, UMR INRA/UCBN, Institut de Biologie Fondamentale et Appliquée, Université de Caen Basse-Normandie, Caen, 14032</wicri:regionArea><wicri:noRegion>14032</wicri:noRegion><orgName type="university">Université de Caen Basse-Normandie</orgName><placeName><settlement type="city">Caen</settlement><region type="region" nuts="2">Basse-Normandie</region></placeName></affiliation></author><author><name sortKey="Staudinger, Christiana" sort="Staudinger, Christiana" uniqKey="Staudinger C" first="Christiana" last="Staudinger">Christiana Staudinger</name><affiliation wicri:level="3"><nlm:affiliation>Department of Ecogenomics and Systems Biology, University of Vienna, Vienna, 1090, Austria.</nlm:affiliation><country xml:lang="fr">Autriche</country><wicri:regionArea>Department of Ecogenomics and Systems Biology, University of Vienna, Vienna, 1090</wicri:regionArea><placeName><region type="land" nuts="2">Vienne (Autriche)</region><settlement type="city">Vienne (Autriche)</settlement></placeName></affiliation></author><author><name sortKey="Wienkoop, Stefanie" sort="Wienkoop, Stefanie" uniqKey="Wienkoop S" first="Stefanie" last="Wienkoop">Stefanie Wienkoop</name><affiliation wicri:level="3"><nlm:affiliation>Department of Ecogenomics and Systems Biology, University of Vienna, Vienna, 1090, Austria.</nlm:affiliation><country xml:lang="fr">Autriche</country><wicri:regionArea>Department of Ecogenomics and Systems Biology, University of Vienna, Vienna, 1090</wicri:regionArea><placeName><region type="land" nuts="2">Vienne (Autriche)</region><settlement type="city">Vienne (Autriche)</settlement></placeName></affiliation></author><author><name sortKey="Araus, Jose L" sort="Araus, Jose L" uniqKey="Araus J" first="Jose L" last="Araus">Jose L. Araus</name><affiliation wicri:level="1"><nlm:affiliation>Dpto de Biología Vegetal, Facultat de Biologia, Universidad de Barcelona, Barcelona, 08028, Spain.</nlm:affiliation><country xml:lang="fr">Espagne</country><wicri:regionArea>Dpto de Biología Vegetal, Facultat de Biologia, Universidad de Barcelona, Barcelona, 08028</wicri:regionArea><wicri:noRegion>08028</wicri:noRegion></affiliation></author><author><name sortKey="Bourguignon, Jacques" sort="Bourguignon, Jacques" uniqKey="Bourguignon J" first="Jacques" last="Bourguignon">Jacques Bourguignon</name><affiliation wicri:level="1"><nlm:affiliation>Laboratoire Physiologie Cellulaire Végétale (PCV), CEA, iRTSV, Grenoble, 38054, France.</nlm:affiliation><country xml:lang="fr">France</country><wicri:regionArea>Laboratoire Physiologie Cellulaire Végétale (PCV), CEA, iRTSV, Grenoble, 38054</wicri:regionArea><wicri:noRegion>38054</wicri:noRegion><wicri:noRegion>38054</wicri:noRegion></affiliation></author><author><name sortKey="Irigoyen, Juan J" sort="Irigoyen, Juan J" uniqKey="Irigoyen J" first="Juan J" last="Irigoyen">Juan J. Irigoyen</name><affiliation wicri:level="1"><nlm:affiliation>Grupo de Fisiología del Estrés en Plantas (Dpto. de Biología Ambiental), Unidad Asociada al CSIC, EEAD, Zaragoza e ICVV, Logroño, Facultades de Ciencias yFarmacia, Universidad de Navarra, Pamplona, 31008, Spain.</nlm:affiliation><country xml:lang="fr">Espagne</country><wicri:regionArea>Grupo de Fisiología del Estrés en Plantas (Dpto. de Biología Ambiental), Unidad Asociada al CSIC, EEAD, Zaragoza e ICVV, Logroño, Facultades de Ciencias yFarmacia, Universidad de Navarra, Pamplona, 31008</wicri:regionArea><wicri:noRegion>31008</wicri:noRegion></affiliation></author><author><name sortKey="Tcherkez, Guillaume" sort="Tcherkez, Guillaume" uniqKey="Tcherkez G" first="Guillaume" last="Tcherkez">Guillaume Tcherkez</name><affiliation wicri:level="1"><nlm:affiliation>Research School of Biology, College of Medicine, Biology and Environment, Australian National University, Canberra, Australian Capital Territory, 2601, Australia.</nlm:affiliation><country xml:lang="fr">Australie</country><wicri:regionArea>Research School of Biology, College of Medicine, Biology and Environment, Australian National University, Canberra, Australian Capital Territory, 2601</wicri:regionArea><wicri:noRegion>2601</wicri:noRegion></affiliation></author></analytic><series><title level="j">Plant, cell & environment</title><idno type="eISSN">1365-3040</idno><imprint><date when="2015" type="published">2015</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Acclimatization</term><term>Biomass</term><term>Carbon (metabolism)</term><term>Carbon Dioxide (pharmacology)</term><term>Edible Grain</term><term>Electron Transport</term><term>Lysine (metabolism)</term><term>Metabolomics</term><term>Nitrogen (metabolism)</term><term>Photosynthesis</term><term>Plant Leaves (drug effects)</term><term>Plant Leaves (physiology)</term><term>Ribulose-Bisphosphate Carboxylase (metabolism)</term><term>Triticum (drug effects)</term><term>Triticum (physiology)</term></keywords><keywords scheme="KwdFr" xml:lang="fr"><term>Acclimatation</term><term>Azote (métabolisme)</term><term>Biomasse</term><term>Carbone (métabolisme)</term><term>Dioxyde de carbone (pharmacologie)</term><term>Feuilles de plante ()</term><term>Feuilles de plante (physiologie)</term><term>Grains comestibles</term><term>Lysine (métabolisme)</term><term>Métabolomique</term><term>Photosynthèse</term><term>Ribulose bisphosphate carboxylase (métabolisme)</term><term>Transfert d'électrons</term><term>Triticum ()</term><term>Triticum (physiologie)</term></keywords><keywords scheme="MESH" type="chemical" qualifier="metabolism" xml:lang="en"><term>Carbon</term><term>Lysine</term><term>Nitrogen</term><term>Ribulose-Bisphosphate Carboxylase</term></keywords><keywords scheme="MESH" type="chemical" qualifier="pharmacology" xml:lang="en"><term>Carbon Dioxide</term></keywords><keywords scheme="MESH" qualifier="drug effects" xml:lang="en"><term>Plant Leaves</term><term>Triticum</term></keywords><keywords scheme="MESH" qualifier="métabolisme" xml:lang="fr"><term>Azote</term><term>Carbone</term><term>Lysine</term><term>Ribulose bisphosphate carboxylase</term></keywords><keywords scheme="MESH" qualifier="pharmacologie" xml:lang="fr"><term>Dioxyde de carbone</term></keywords><keywords scheme="MESH" qualifier="physiologie" xml:lang="fr"><term>Feuilles de plante</term><term>Triticum</term></keywords><keywords scheme="MESH" qualifier="physiology" xml:lang="en"><term>Plant Leaves</term><term>Triticum</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Acclimatization</term><term>Biomass</term><term>Edible Grain</term><term>Electron Transport</term><term>Metabolomics</term><term>Photosynthesis</term></keywords><keywords scheme="MESH" xml:lang="fr"><term>Acclimatation</term><term>Biomasse</term><term>Feuilles de plante</term><term>Grains comestibles</term><term>Métabolomique</term><term>Photosynthèse</term><term>Transfert d'électrons</term><term>Triticum</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">C sink/source balance and N assimilation have been identified as target processes conditioning crop responsiveness to elevated CO2 . However, little is known about phenology-driven modifications of C and N primary metabolism at elevated CO2 in cereals such as wheat. Here, we examined the differential effect of elevated CO2 at two development stages (onset of flowering, onset of grain filling) in durum wheat (Triticum durum, var. Sula) using physiological measurements (photosynthesis, isotopes), metabolomics, proteomics and (15) N labelling. Our results show that growth at elevated CO2 was accompanied by photosynthetic acclimation through a lower internal (mesophyll) conductance but no significant effect on Rubisco content, maximal carboxylation or electron transfer. Growth at elevated CO2 altered photosynthate export and tended to accelerate leaf N remobilization, which was visible for several proteins and amino acids, as well as lysine degradation metabolism. However, grain biomass produced at elevated CO2 was larger and less N rich, suggesting that nitrogen use efficiency rather than photosynthesis is an important target for improvement, even in good CO2 -responsive cultivars.</div></front></TEI><affiliations><list><country><li>Australie</li><li>Autriche</li><li>Espagne</li><li>France</li><li>États-Unis</li></country><region><li>Basse-Normandie</li><li>Vienne (Autriche)</li><li>Île-de-France</li></region><settlement><li>Caen</li><li>Orsay</li><li>Vienne (Autriche)</li></settlement><orgName><li>Université Paris-Sud</li><li>Université de Caen Basse-Normandie</li></orgName></list><tree><country name="Espagne"><noRegion><name sortKey="Aranjuelo, Iker" sort="Aranjuelo, Iker" uniqKey="Aranjuelo I" first="Iker" last="Aranjuelo">Iker Aranjuelo</name></noRegion><name sortKey="Araus, Jose L" sort="Araus, Jose L" uniqKey="Araus J" first="Jose L" last="Araus">Jose L. Araus</name><name sortKey="Gil Quintana, Erena" sort="Gil Quintana, Erena" uniqKey="Gil Quintana E" first="Erena" last="Gil-Quintana">Erena Gil-Quintana</name><name sortKey="Irigoyen, Juan J" sort="Irigoyen, Juan J" uniqKey="Irigoyen J" first="Juan J" last="Irigoyen">Juan J. Irigoyen</name></country><country name="États-Unis"><noRegion><name sortKey="Erice, Gorka" sort="Erice, Gorka" uniqKey="Erice G" first="Gorka" last="Erice">Gorka Erice</name></noRegion><name sortKey="Sanz Saez, Alvaro" sort="Sanz Saez, Alvaro" uniqKey="Sanz Saez A" first="Alvaro" last="Sanz-Sáez">Alvaro Sanz-Sáez</name></country><country name="France"><region name="Île-de-France"><name sortKey="Abadie, Cyril" sort="Abadie, Cyril" uniqKey="Abadie C" first="Cyril" last="Abadie">Cyril Abadie</name></region><name sortKey="Avice, Jean Christophe" sort="Avice, Jean Christophe" uniqKey="Avice J" first="Jean-Christophe" last="Avice">Jean-Christophe Avice</name><name sortKey="Bourguignon, Jacques" sort="Bourguignon, Jacques" uniqKey="Bourguignon J" first="Jacques" last="Bourguignon">Jacques Bourguignon</name><name sortKey="Gilard, Francoise" sort="Gilard, Francoise" uniqKey="Gilard F" first="Françoise" last="Gilard">Françoise Gilard</name></country><country name="Autriche"><region name="Vienne (Autriche)"><name sortKey="Staudinger, Christiana" sort="Staudinger, Christiana" uniqKey="Staudinger C" first="Christiana" last="Staudinger">Christiana Staudinger</name></region><name sortKey="Wienkoop, Stefanie" sort="Wienkoop, Stefanie" uniqKey="Wienkoop S" first="Stefanie" last="Wienkoop">Stefanie Wienkoop</name></country><country name="Australie"><noRegion><name sortKey="Tcherkez, Guillaume" sort="Tcherkez, Guillaume" uniqKey="Tcherkez G" first="Guillaume" last="Tcherkez">Guillaume Tcherkez</name></noRegion></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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