Mesophyll conductance limitation of photosynthesis in poplar under elevated ozone.
Identifieur interne : 000B38 ( Main/Curation ); précédent : 000B37; suivant : 000B39Mesophyll conductance limitation of photosynthesis in poplar under elevated ozone.
Auteurs : Yansen Xu [Suède] ; Zhaozhong Feng [République populaire de Chine] ; Bo Shang [République populaire de Chine] ; Lulu Dai [République populaire de Chine] ; Johan Uddling [Suède] ; Lasse Tarvainen [Suède]Source :
- The Science of the total environment [ 1879-1026 ] ; 2019.
Descripteurs français
- KwdFr :
- Chine (MeSH), Chlorophylle (métabolisme), Feuilles de plante (effets des médicaments et des substances chimiques), Feuilles de plante (métabolisme), Fluorescence (MeSH), Ozone (effets indésirables), Photosynthèse (effets des médicaments et des substances chimiques), Polluants atmosphériques (effets indésirables), Populus (effets des médicaments et des substances chimiques), Populus (métabolisme), Transport biologique (MeSH).
- MESH :
- effets des médicaments et des substances chimiques : Feuilles de plante, Photosynthèse, Populus.
- effets indésirables : Ozone, Polluants atmosphériques.
- métabolisme : Chlorophylle, Feuilles de plante, Populus.
- Chine, Fluorescence, Transport biologique.
- Wicri :
- geographic : République populaire de Chine.
English descriptors
- KwdEn :
- MESH :
- chemical , adverse effects : Air Pollutants, Ozone.
- chemical , metabolism : Chlorophyll.
- geographic : China.
- drug effects : Photosynthesis, Plant Leaves, Populus.
- metabolism : Plant Leaves, Populus.
- Biological Transport, Fluorescence.
Abstract
Finite mesophyll conductance (gm) reduces the rate of CO2 diffusion from the leaf intercellular space to the chloroplast and constitutes a major limitation of photosynthesis in trees. While it is well established that gm is decreased by stressors such as drought and high temperature, few studies have investigated if the phytotoxic air pollutant ozone (O3) affects gm. We quantified the relative importance of three different types of limitations of photosynthesis in poplar trees exposed to elevated O3: decreases in stomatal conductance, gm and biochemical photosynthetic capacity. The O3-induced reductions in light-saturated net photosynthesis were linked to significant declines in gm and biochemical photosynthetic capacity (in particular carboxylation). There was no significant effect of O3 on stomatal conductance. Of the O3-induced limitations on photosynthesis, gm limitation was by far the most important (-16%) while biochemical limitation (-8%) was rather small. Both limitations grew in magnitude over the study period and varied in response to leaf-specific O3 exposure. Our findings suggest that declines in gm may play a key role in limiting photosynthesis of plants exposed to elevated O3, an effect hitherto overlooked.
DOI: 10.1016/j.scitotenv.2018.11.466
PubMed: 30537576
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College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China; Department of Biological and Environmental Sciences, University of Gothenburg, SE-405 30 Gothenburg, Sweden.</nlm:affiliation><country xml:lang="fr">Suède</country><wicri:regionArea>State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China; Department of Biological and Environmental Sciences, University of Gothenburg, SE-405 30 Gothenburg</wicri:regionArea></affiliation></author><author><name sortKey="Feng, Zhaozhong" sort="Feng, Zhaozhong" uniqKey="Feng Z" first="Zhaozhong" last="Feng">Zhaozhong Feng</name><affiliation wicri:level="1"><nlm:affiliation>State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China. 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College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049</wicri:regionArea></affiliation></author><author><name sortKey="Dai, Lulu" sort="Dai, Lulu" uniqKey="Dai L" first="Lulu" last="Dai">Lulu Dai</name><affiliation wicri:level="1"><nlm:affiliation>State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China.</nlm:affiliation><country xml:lang="fr">République populaire de Chine</country><wicri:regionArea>State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049</wicri:regionArea></affiliation></author><author><name sortKey="Uddling, Johan" sort="Uddling, Johan" uniqKey="Uddling J" first="Johan" last="Uddling">Johan Uddling</name><affiliation wicri:level="1"><nlm:affiliation>Department of Biological and Environmental Sciences, University of Gothenburg, SE-405 30 Gothenburg, Sweden.</nlm:affiliation><country xml:lang="fr">Suède</country><wicri:regionArea>Department of Biological and Environmental Sciences, University of Gothenburg, SE-405 30 Gothenburg</wicri:regionArea></affiliation></author><author><name sortKey="Tarvainen, Lasse" sort="Tarvainen, Lasse" uniqKey="Tarvainen L" first="Lasse" last="Tarvainen">Lasse Tarvainen</name><affiliation wicri:level="1"><nlm:affiliation>Department of Biological and Environmental Sciences, University of Gothenburg, SE-405 30 Gothenburg, Sweden.</nlm:affiliation><country xml:lang="fr">Suède</country><wicri:regionArea>Department of Biological and Environmental Sciences, University of Gothenburg, SE-405 30 Gothenburg</wicri:regionArea></affiliation></author></analytic><series><title level="j">The Science of the total environment</title><idno type="eISSN">1879-1026</idno><imprint><date when="2019" type="published">2019</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Air Pollutants (adverse effects)</term><term>Biological Transport (MeSH)</term><term>China (MeSH)</term><term>Chlorophyll (metabolism)</term><term>Fluorescence (MeSH)</term><term>Ozone (adverse effects)</term><term>Photosynthesis (drug effects)</term><term>Plant Leaves (drug effects)</term><term>Plant Leaves (metabolism)</term><term>Populus (drug effects)</term><term>Populus (metabolism)</term></keywords><keywords scheme="KwdFr" xml:lang="fr"><term>Chine (MeSH)</term><term>Chlorophylle (métabolisme)</term><term>Feuilles de plante (effets des médicaments et des substances chimiques)</term><term>Feuilles de plante (métabolisme)</term><term>Fluorescence (MeSH)</term><term>Ozone (effets indésirables)</term><term>Photosynthèse (effets des médicaments et des substances chimiques)</term><term>Polluants atmosphériques (effets indésirables)</term><term>Populus (effets des médicaments et des substances chimiques)</term><term>Populus (métabolisme)</term><term>Transport biologique (MeSH)</term></keywords><keywords scheme="MESH" type="chemical" qualifier="adverse effects" xml:lang="en"><term>Air Pollutants</term><term>Ozone</term></keywords><keywords scheme="MESH" type="chemical" qualifier="metabolism" xml:lang="en"><term>Chlorophyll</term></keywords><keywords scheme="MESH" type="geographic" xml:lang="en"><term>China</term></keywords><keywords scheme="MESH" qualifier="drug effects" xml:lang="en"><term>Photosynthesis</term><term>Plant Leaves</term><term>Populus</term></keywords><keywords scheme="MESH" qualifier="effets des médicaments et des substances chimiques" xml:lang="fr"><term>Feuilles de plante</term><term>Photosynthèse</term><term>Populus</term></keywords><keywords scheme="MESH" qualifier="effets indésirables" xml:lang="fr"><term>Ozone</term><term>Polluants atmosphériques</term></keywords><keywords scheme="MESH" qualifier="metabolism" xml:lang="en"><term>Plant Leaves</term><term>Populus</term></keywords><keywords scheme="MESH" qualifier="métabolisme" xml:lang="fr"><term>Chlorophylle</term><term>Feuilles de plante</term><term>Populus</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Biological Transport</term><term>Fluorescence</term></keywords><keywords scheme="MESH" xml:lang="fr"><term>Chine</term><term>Fluorescence</term><term>Transport biologique</term></keywords><keywords scheme="Wicri" type="geographic" xml:lang="fr"><term>République populaire de Chine</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Finite mesophyll conductance (g<sub>m</sub>) reduces the rate of CO<sub>2</sub> diffusion from the leaf intercellular space to the chloroplast and constitutes a major limitation of photosynthesis in trees. While it is well established that g<sub>m</sub> is decreased by stressors such as drought and high temperature, few studies have investigated if the phytotoxic air pollutant ozone (O<sub>3</sub>) affects g<sub>m</sub>. We quantified the relative importance of three different types of limitations of photosynthesis in poplar trees exposed to elevated O<sub>3</sub>: decreases in stomatal conductance, g<sub>m</sub> and biochemical photosynthetic capacity. The O<sub>3</sub>-induced reductions in light-saturated net photosynthesis were linked to significant declines in g<sub>m</sub> and biochemical photosynthetic capacity (in particular carboxylation). There was no significant effect of O<sub>3</sub> on stomatal conductance. Of the O<sub>3</sub>-induced limitations on photosynthesis, g<sub>m</sub> limitation was by far the most important (-16%) while biochemical limitation (-8%) was rather small. Both limitations grew in magnitude over the study period and varied in response to leaf-specific O<sub>3</sub> exposure. Our findings suggest that declines in g<sub>m</sub> may play a key role in limiting photosynthesis of plants exposed to elevated O<sub>3</sub>, an effect hitherto overlooked.</div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">30537576</PMID><DateCompleted><Year>2019</Year><Month>02</Month><Day>26</Day></DateCompleted><DateRevised><Year>2019</Year><Month>02</Month><Day>26</Day></DateRevised><Article PubModel="Print-Electronic"><Journal><ISSN IssnType="Electronic">1879-1026</ISSN><JournalIssue CitedMedium="Internet"><Volume>657</Volume><PubDate><Year>2019</Year><Month>Mar</Month><Day>20</Day></PubDate></JournalIssue><Title>The Science of the total environment</Title><ISOAbbreviation>Sci Total Environ</ISOAbbreviation></Journal><ArticleTitle>Mesophyll conductance limitation of photosynthesis in poplar under elevated ozone.</ArticleTitle><Pagination><MedlinePgn>136-145</MedlinePgn></Pagination><ELocationID EIdType="pii" ValidYN="Y">S0048-9697(18)34821-6</ELocationID><ELocationID EIdType="doi" ValidYN="Y">10.1016/j.scitotenv.2018.11.466</ELocationID><Abstract><AbstractText>Finite mesophyll conductance (g<sub>m</sub>) reduces the rate of CO<sub>2</sub> diffusion from the leaf intercellular space to the chloroplast and constitutes a major limitation of photosynthesis in trees. While it is well established that g<sub>m</sub> is decreased by stressors such as drought and high temperature, few studies have investigated if the phytotoxic air pollutant ozone (O<sub>3</sub>) affects g<sub>m</sub>. We quantified the relative importance of three different types of limitations of photosynthesis in poplar trees exposed to elevated O<sub>3</sub>: decreases in stomatal conductance, g<sub>m</sub> and biochemical photosynthetic capacity. The O<sub>3</sub>-induced reductions in light-saturated net photosynthesis were linked to significant declines in g<sub>m</sub> and biochemical photosynthetic capacity (in particular carboxylation). There was no significant effect of O<sub>3</sub> on stomatal conductance. Of the O<sub>3</sub>-induced limitations on photosynthesis, g<sub>m</sub> limitation was by far the most important (-16%) while biochemical limitation (-8%) was rather small. Both limitations grew in magnitude over the study period and varied in response to leaf-specific O<sub>3</sub> exposure. Our findings suggest that declines in g<sub>m</sub> may play a key role in limiting photosynthesis of plants exposed to elevated O<sub>3</sub>, an effect hitherto overlooked.</AbstractText><CopyrightInformation>Copyright © 2018 Elsevier B.V. All rights reserved.</CopyrightInformation></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Xu</LastName><ForeName>Yansen</ForeName><Initials>Y</Initials><AffiliationInfo><Affiliation>State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China; Department of Biological and Environmental Sciences, University of Gothenburg, SE-405 30 Gothenburg, Sweden.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Feng</LastName><ForeName>Zhaozhong</ForeName><Initials>Z</Initials><AffiliationInfo><Affiliation>State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China. Electronic address: fzz@rcees.ac.cn.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Shang</LastName><ForeName>Bo</ForeName><Initials>B</Initials><AffiliationInfo><Affiliation>State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Dai</LastName><ForeName>Lulu</ForeName><Initials>L</Initials><AffiliationInfo><Affiliation>State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Uddling</LastName><ForeName>Johan</ForeName><Initials>J</Initials><AffiliationInfo><Affiliation>Department of Biological and Environmental Sciences, University of Gothenburg, SE-405 30 Gothenburg, Sweden.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Tarvainen</LastName><ForeName>Lasse</ForeName><Initials>L</Initials><AffiliationInfo><Affiliation>Department of Biological and Environmental Sciences, University of Gothenburg, SE-405 30 Gothenburg, Sweden.</Affiliation></AffiliationInfo></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType></PublicationTypeList><ArticleDate DateType="Electronic"><Year>2018</Year><Month>12</Month><Day>04</Day></ArticleDate></Article><MedlineJournalInfo><Country>Netherlands</Country><MedlineTA>Sci Total Environ</MedlineTA><NlmUniqueID>0330500</NlmUniqueID><ISSNLinking>0048-9697</ISSNLinking></MedlineJournalInfo><ChemicalList><Chemical><RegistryNumber>0</RegistryNumber><NameOfSubstance UI="D000393">Air Pollutants</NameOfSubstance></Chemical><Chemical><RegistryNumber>1406-65-1</RegistryNumber><NameOfSubstance UI="D002734">Chlorophyll</NameOfSubstance></Chemical><Chemical><RegistryNumber>66H7ZZK23N</RegistryNumber><NameOfSubstance UI="D010126">Ozone</NameOfSubstance></Chemical></ChemicalList><CitationSubset>IM</CitationSubset><MeshHeadingList><MeshHeading><DescriptorName UI="D000393" MajorTopicYN="N">Air Pollutants</DescriptorName><QualifierName UI="Q000009" MajorTopicYN="Y">adverse effects</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D001692" MajorTopicYN="N">Biological Transport</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D002681" MajorTopicYN="N" Type="Geographic">China</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D002734" MajorTopicYN="N">Chlorophyll</DescriptorName><QualifierName UI="Q000378" MajorTopicYN="N">metabolism</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D005453" MajorTopicYN="N">Fluorescence</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D010126" MajorTopicYN="N">Ozone</DescriptorName><QualifierName UI="Q000009" MajorTopicYN="Y">adverse effects</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D010788" MajorTopicYN="N">Photosynthesis</DescriptorName><QualifierName UI="Q000187" MajorTopicYN="N">drug effects</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D018515" MajorTopicYN="N">Plant Leaves</DescriptorName><QualifierName UI="Q000187" MajorTopicYN="N">drug effects</QualifierName><QualifierName UI="Q000378" MajorTopicYN="Y">metabolism</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D032107" MajorTopicYN="N">Populus</DescriptorName><QualifierName UI="Q000187" MajorTopicYN="N">drug effects</QualifierName><QualifierName UI="Q000378" MajorTopicYN="Y">metabolism</QualifierName></MeshHeading></MeshHeadingList><KeywordList Owner="NOTNLM"><Keyword MajorTopicYN="N">Carboxylation</Keyword><Keyword MajorTopicYN="N">Mesophyll conductance</Keyword><Keyword MajorTopicYN="N">Ozone</Keyword><Keyword MajorTopicYN="N">Photosynthesis</Keyword><Keyword MajorTopicYN="N">Poplar</Keyword><Keyword MajorTopicYN="N">Stomatal conductance</Keyword></KeywordList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="received"><Year>2018</Year><Month>09</Month><Day>02</Day></PubMedPubDate><PubMedPubDate PubStatus="revised"><Year>2018</Year><Month>11</Month><Day>06</Day></PubMedPubDate><PubMedPubDate PubStatus="accepted"><Year>2018</Year><Month>11</Month><Day>30</Day></PubMedPubDate><PubMedPubDate PubStatus="pubmed"><Year>2018</Year><Month>12</Month><Day>12</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate 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