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Ozone exposure and flux-based response functions for photosynthetic traits in wheat, maize and poplar.

Identifieur interne : 001C07 ( Main/Exploration ); précédent : 001C06; suivant : 001C08

Ozone exposure and flux-based response functions for photosynthetic traits in wheat, maize and poplar.

Auteurs : Matthieu Bagard [France] ; Yves Jolivet [France] ; Marie-Paule Hasenfratz-Sauder [France] ; Joëlle Gérard [France] ; Pierre Dizengremel [France] ; Didier Le Thiec [France]

Source :

RBID : pubmed:26253315

Descripteurs français

English descriptors

Abstract

Ozone exposure- and dose-response relationships based on photosynthetic leaf traits (CO2 assimilation, chlorophyll content, Rubisco and PEPc activities) were established for wheat, maize and poplar plants grown in identical controlled conditions, providing a comparison between crop and tree species, as well as between C3 and C4 plants. Intra-specific variability was addressed by comparing two wheat cultivars with contrasting ozone tolerance. Depending on plant models and ozone levels, first-order, second-order and segmented linear regression models were used to derive ozone response functions. Overall, flux-based functions appeared superior to exposure-based functions in describing the data, but the improvement remained modest. The best fit was obtained using the POD0.5 for maize and POD3 for poplar. The POD6 appeared relevant for wheat, although intervarietal differences were found. Our results suggest that taking into account the dynamics of leaf antioxidant capacity could improve current methods for ozone risk assessment for plants.

DOI: 10.1016/j.envpol.2015.07.046
PubMed: 26253315


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Le document en format XML

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<div type="abstract" xml:lang="en">Ozone exposure- and dose-response relationships based on photosynthetic leaf traits (CO2 assimilation, chlorophyll content, Rubisco and PEPc activities) were established for wheat, maize and poplar plants grown in identical controlled conditions, providing a comparison between crop and tree species, as well as between C3 and C4 plants. Intra-specific variability was addressed by comparing two wheat cultivars with contrasting ozone tolerance. Depending on plant models and ozone levels, first-order, second-order and segmented linear regression models were used to derive ozone response functions. Overall, flux-based functions appeared superior to exposure-based functions in describing the data, but the improvement remained modest. The best fit was obtained using the POD0.5 for maize and POD3 for poplar. The POD6 appeared relevant for wheat, although intervarietal differences were found. Our results suggest that taking into account the dynamics of leaf antioxidant capacity could improve current methods for ozone risk assessment for plants. </div>
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<AbstractText>Ozone exposure- and dose-response relationships based on photosynthetic leaf traits (CO2 assimilation, chlorophyll content, Rubisco and PEPc activities) were established for wheat, maize and poplar plants grown in identical controlled conditions, providing a comparison between crop and tree species, as well as between C3 and C4 plants. Intra-specific variability was addressed by comparing two wheat cultivars with contrasting ozone tolerance. Depending on plant models and ozone levels, first-order, second-order and segmented linear regression models were used to derive ozone response functions. Overall, flux-based functions appeared superior to exposure-based functions in describing the data, but the improvement remained modest. The best fit was obtained using the POD0.5 for maize and POD3 for poplar. The POD6 appeared relevant for wheat, although intervarietal differences were found. Our results suggest that taking into account the dynamics of leaf antioxidant capacity could improve current methods for ozone risk assessment for plants. </AbstractText>
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<ForeName>Marie-Paule</ForeName>
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</Author>
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<ForeName>Joëlle</ForeName>
<Initials>J</Initials>
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<Initials>P</Initials>
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<Affiliation>Université de Lorraine, UMR1137 Ecologie et Ecophysiologie Forestières, BP 70239, F-54506 Vandoeuvre-lès-Nancy, Cedex, France; INRA, UMR1137 Ecologie et Ecophysiologie Forestières, F-54280 Champenoux, France. Electronic address: pierre.dizengremel@univ-lorraine.fr.</Affiliation>
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<LastName>Le Thiec</LastName>
<ForeName>Didier</ForeName>
<Initials>D</Initials>
<AffiliationInfo>
<Affiliation>INRA, UMR1137 Ecologie et Ecophysiologie Forestières, F-54280 Champenoux, France; Université de Lorraine, UMR1137 Ecologie et Ecophysiologie Forestières, BP 70239, F-54506 Vandoeuvre-lès-Nancy, Cedex, France. Electronic address: lethiec@nancy.inra.fr.</Affiliation>
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<PublicationType UI="D013485">Research Support, Non-U.S. Gov't</PublicationType>
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<Year>2015</Year>
<Month>08</Month>
<Day>04</Day>
</ArticleDate>
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<Country>England</Country>
<MedlineTA>Environ Pollut</MedlineTA>
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<Chemical>
<RegistryNumber>1406-65-1</RegistryNumber>
<NameOfSubstance UI="D002734">Chlorophyll</NameOfSubstance>
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<NameOfSubstance UI="D010126">Ozone</NameOfSubstance>
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<QualifierName UI="Q000633" MajorTopicYN="N">toxicity</QualifierName>
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<DescriptorName UI="D002734" MajorTopicYN="N">Chlorophyll</DescriptorName>
<QualifierName UI="Q000378" MajorTopicYN="N">metabolism</QualifierName>
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<QualifierName UI="Q000032" MajorTopicYN="N">analysis</QualifierName>
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<MeshHeading>
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</MeshHeading>
<MeshHeading>
<DescriptorName UI="D014197" MajorTopicYN="N">Trees</DescriptorName>
<QualifierName UI="Q000187" MajorTopicYN="N">drug effects</QualifierName>
<QualifierName UI="Q000378" MajorTopicYN="N">metabolism</QualifierName>
</MeshHeading>
<MeshHeading>
<DescriptorName UI="D014908" MajorTopicYN="N">Triticum</DescriptorName>
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<QualifierName UI="Q000378" MajorTopicYN="N">metabolism</QualifierName>
</MeshHeading>
<MeshHeading>
<DescriptorName UI="D003313" MajorTopicYN="N">Zea mays</DescriptorName>
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<QualifierName UI="Q000378" MajorTopicYN="N">metabolism</QualifierName>
</MeshHeading>
</MeshHeadingList>
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<Keyword MajorTopicYN="N">Crops</Keyword>
<Keyword MajorTopicYN="N">Dose-response relationships</Keyword>
<Keyword MajorTopicYN="N">Ozone</Keyword>
<Keyword MajorTopicYN="N">Photosynthesis</Keyword>
<Keyword MajorTopicYN="N">Trees</Keyword>
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<Month>05</Month>
<Day>06</Day>
</PubMedPubDate>
<PubMedPubDate PubStatus="revised">
<Year>2015</Year>
<Month>07</Month>
<Day>24</Day>
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<PubMedPubDate PubStatus="accepted">
<Year>2015</Year>
<Month>07</Month>
<Day>26</Day>
</PubMedPubDate>
<PubMedPubDate PubStatus="entrez">
<Year>2015</Year>
<Month>8</Month>
<Day>9</Day>
<Hour>6</Hour>
<Minute>0</Minute>
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<Month>7</Month>
<Day>1</Day>
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<ArticleId IdType="pii">S0269-7491(15)00379-6</ArticleId>
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</country>
<region>
<li>Grand Est</li>
<li>Lorraine (région)</li>
<li>Île-de-France</li>
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<settlement>
<li>Champenoux</li>
<li>Créteil</li>
<li>Metz</li>
<li>Nancy</li>
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<li>Université Paris-Est Créteil Val-de-Marne</li>
<li>Université de Lorraine</li>
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<country name="France">
<region name="Île-de-France">
<name sortKey="Bagard, Matthieu" sort="Bagard, Matthieu" uniqKey="Bagard M" first="Matthieu" last="Bagard">Matthieu Bagard</name>
</region>
<name sortKey="Dizengremel, Pierre" sort="Dizengremel, Pierre" uniqKey="Dizengremel P" first="Pierre" last="Dizengremel">Pierre Dizengremel</name>
<name sortKey="Gerard, Joelle" sort="Gerard, Joelle" uniqKey="Gerard J" first="Joëlle" last="Gérard">Joëlle Gérard</name>
<name sortKey="Hasenfratz Sauder, Marie Paule" sort="Hasenfratz Sauder, Marie Paule" uniqKey="Hasenfratz Sauder M" first="Marie-Paule" last="Hasenfratz-Sauder">Marie-Paule Hasenfratz-Sauder</name>
<name sortKey="Jolivet, Yves" sort="Jolivet, Yves" uniqKey="Jolivet Y" first="Yves" last="Jolivet">Yves Jolivet</name>
<name sortKey="Le Thiec, Didier" sort="Le Thiec, Didier" uniqKey="Le Thiec D" first="Didier" last="Le Thiec">Didier Le Thiec</name>
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