Increasing leaf temperature reduces the suppression of isoprene emission by elevated CO₂ concentration.
Identifieur interne : 002163 ( Main/Exploration ); précédent : 002162; suivant : 002164Increasing leaf temperature reduces the suppression of isoprene emission by elevated CO₂ concentration.
Auteurs : Mark J. Potosnak [États-Unis] ; Lauren Lestourgeon [États-Unis] ; Othon Nunez [États-Unis]Source :
- The Science of the total environment [ 1879-1026 ] ; 2014.
Descripteurs français
- KwdFr :
- Butadiènes (métabolisme), Changement climatique (MeSH), Dioxyde de carbone (analyse), Dioxyde de carbone (métabolisme), Feuilles de plante (métabolisme), Feuilles de plante (physiologie), Hémiterpènes (métabolisme), Pentanes (métabolisme), Populus (physiologie), Quercus (physiologie), Salix (physiologie), Température (MeSH).
- MESH :
- analyse : Dioxyde de carbone.
- métabolisme : Butadiènes, Dioxyde de carbone, Feuilles de plante, Hémiterpènes, Pentanes.
- physiologie : Feuilles de plante, Populus, Quercus, Salix.
- Changement climatique, Température.
English descriptors
- KwdEn :
- MESH :
- chemical , analysis : Carbon Dioxide.
- chemical , metabolism : Butadienes, Carbon Dioxide, Hemiterpenes, Pentanes.
- metabolism : Plant Leaves.
- physiology : Plant Leaves, Populus, Quercus, Salix.
- Climate Change, Temperature.
Abstract
Including algorithms to account for the suppression of isoprene emission by elevated CO2 concentration affects estimates of global isoprene emission for future climate change scenarios. In this study, leaf-level measurements of isoprene emission were made to determine the short-term interactive effect of leaf temperature and CO2 concentration. For both greenhouse plants and plants grown under field conditions, the suppression of isoprene emission was reduced by increasing leaf temperature. For each of the four different tree species investigated, aspen (Populus tremuloides Michx.), cottonwood (Populus deltoides W. Bartram ex Marshall), red oak (Quercus rubra L.), and tundra dwarf willow (Salix pulchra Cham.), the suppression of isoprene by elevated CO2 was eliminated at increased temperature, and the maximum temperature where suppression was observed ranged from 25 to 35°C. Hypotheses proposed to explain the short-term suppression of isoprene emission by increased CO2 concentration were tested against this observation. Hypotheses related to cofactors in the methylerythritol phosphate (MEP) pathway were consistent with reduced suppression at elevated leaf temperature. Also, reduced solubility of CO2 with increased temperature can explain the reduced suppression for the phosphoenolpyruvate (PEP) carboxylase competition hypothesis. Some global models of isoprene emission include the short-term suppression effect, and should be modified to include the observed interaction. If these results are consistent at longer timescales, there are implications for predicting future global isoprene emission budgets and the reduced suppression at increased temperature could explain some of the variable responses observed in long-term CO2 exposure experiments.
DOI: 10.1016/j.scitotenv.2014.02.065
PubMed: 24614154
Affiliations:
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Electronic address: mpotosna@depaul.edu.</nlm:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>Department of Environmental Science and Studies, DePaul University, Chicago, IL 60614</wicri:regionArea><placeName><region type="state">Illinois</region></placeName></affiliation></author><author><name sortKey="Lestourgeon, Lauren" sort="Lestourgeon, Lauren" uniqKey="Lestourgeon L" first="Lauren" last="Lestourgeon">Lauren Lestourgeon</name><affiliation wicri:level="2"><nlm:affiliation>Department of Environmental Science and Studies, DePaul University, Chicago, IL 60614, USA.</nlm:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>Department of Environmental Science and Studies, DePaul University, Chicago, IL 60614</wicri:regionArea><placeName><region type="state">Illinois</region></placeName></affiliation></author><author><name sortKey="Nunez, Othon" sort="Nunez, Othon" uniqKey="Nunez O" first="Othon" last="Nunez">Othon Nunez</name><affiliation wicri:level="2"><nlm:affiliation>Department of Environmental Science and Studies, DePaul University, Chicago, IL 60614, USA.</nlm:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>Department of Environmental Science and Studies, DePaul University, Chicago, IL 60614</wicri:regionArea><placeName><region type="state">Illinois</region></placeName></affiliation></author></analytic><series><title level="j">The Science of the total environment</title><idno type="eISSN">1879-1026</idno><imprint><date when="2014" type="published">2014</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Butadienes (metabolism)</term><term>Carbon Dioxide (analysis)</term><term>Carbon Dioxide (metabolism)</term><term>Climate Change (MeSH)</term><term>Hemiterpenes (metabolism)</term><term>Pentanes (metabolism)</term><term>Plant Leaves (metabolism)</term><term>Plant Leaves (physiology)</term><term>Populus (physiology)</term><term>Quercus (physiology)</term><term>Salix (physiology)</term><term>Temperature (MeSH)</term></keywords><keywords scheme="KwdFr" xml:lang="fr"><term>Butadiènes (métabolisme)</term><term>Changement climatique (MeSH)</term><term>Dioxyde de carbone (analyse)</term><term>Dioxyde de carbone (métabolisme)</term><term>Feuilles de plante (métabolisme)</term><term>Feuilles de plante (physiologie)</term><term>Hémiterpènes (métabolisme)</term><term>Pentanes (métabolisme)</term><term>Populus (physiologie)</term><term>Quercus (physiologie)</term><term>Salix (physiologie)</term><term>Température (MeSH)</term></keywords><keywords scheme="MESH" type="chemical" qualifier="analysis" xml:lang="en"><term>Carbon Dioxide</term></keywords><keywords scheme="MESH" type="chemical" qualifier="metabolism" xml:lang="en"><term>Butadienes</term><term>Carbon Dioxide</term><term>Hemiterpenes</term><term>Pentanes</term></keywords><keywords scheme="MESH" qualifier="analyse" xml:lang="fr"><term>Dioxyde de carbone</term></keywords><keywords scheme="MESH" qualifier="metabolism" xml:lang="en"><term>Plant Leaves</term></keywords><keywords scheme="MESH" qualifier="métabolisme" xml:lang="fr"><term>Butadiènes</term><term>Dioxyde de carbone</term><term>Feuilles de plante</term><term>Hémiterpènes</term><term>Pentanes</term></keywords><keywords scheme="MESH" qualifier="physiologie" xml:lang="fr"><term>Feuilles de plante</term><term>Populus</term><term>Quercus</term><term>Salix</term></keywords><keywords scheme="MESH" qualifier="physiology" xml:lang="en"><term>Plant Leaves</term><term>Populus</term><term>Quercus</term><term>Salix</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Climate Change</term><term>Temperature</term></keywords><keywords scheme="MESH" xml:lang="fr"><term>Changement climatique</term><term>Température</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Including algorithms to account for the suppression of isoprene emission by elevated CO2 concentration affects estimates of global isoprene emission for future climate change scenarios. In this study, leaf-level measurements of isoprene emission were made to determine the short-term interactive effect of leaf temperature and CO2 concentration. For both greenhouse plants and plants grown under field conditions, the suppression of isoprene emission was reduced by increasing leaf temperature. For each of the four different tree species investigated, aspen (Populus tremuloides Michx.), cottonwood (Populus deltoides W. Bartram ex Marshall), red oak (Quercus rubra L.), and tundra dwarf willow (Salix pulchra Cham.), the suppression of isoprene by elevated CO2 was eliminated at increased temperature, and the maximum temperature where suppression was observed ranged from 25 to 35°C. Hypotheses proposed to explain the short-term suppression of isoprene emission by increased CO2 concentration were tested against this observation. Hypotheses related to cofactors in the methylerythritol phosphate (MEP) pathway were consistent with reduced suppression at elevated leaf temperature. Also, reduced solubility of CO2 with increased temperature can explain the reduced suppression for the phosphoenolpyruvate (PEP) carboxylase competition hypothesis. Some global models of isoprene emission include the short-term suppression effect, and should be modified to include the observed interaction. If these results are consistent at longer timescales, there are implications for predicting future global isoprene emission budgets and the reduced suppression at increased temperature could explain some of the variable responses observed in long-term CO2 exposure experiments.</div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">24614154</PMID><DateCompleted><Year>2014</Year><Month>10</Month><Day>06</Day></DateCompleted><DateRevised><Year>2014</Year><Month>04</Month><Day>14</Day></DateRevised><Article PubModel="Print-Electronic"><Journal><ISSN IssnType="Electronic">1879-1026</ISSN><JournalIssue CitedMedium="Internet"><Volume>481</Volume><PubDate><Year>2014</Year><Month>May</Month><Day>15</Day></PubDate></JournalIssue><Title>The Science of the total environment</Title><ISOAbbreviation>Sci Total Environ</ISOAbbreviation></Journal><ArticleTitle>Increasing leaf temperature reduces the suppression of isoprene emission by elevated CO₂ concentration.</ArticleTitle><Pagination><MedlinePgn>352-9</MedlinePgn></Pagination><ELocationID EIdType="doi" ValidYN="Y">10.1016/j.scitotenv.2014.02.065</ELocationID><ELocationID EIdType="pii" ValidYN="Y">S0048-9697(14)00239-3</ELocationID><Abstract><AbstractText>Including algorithms to account for the suppression of isoprene emission by elevated CO2 concentration affects estimates of global isoprene emission for future climate change scenarios. In this study, leaf-level measurements of isoprene emission were made to determine the short-term interactive effect of leaf temperature and CO2 concentration. For both greenhouse plants and plants grown under field conditions, the suppression of isoprene emission was reduced by increasing leaf temperature. For each of the four different tree species investigated, aspen (Populus tremuloides Michx.), cottonwood (Populus deltoides W. Bartram ex Marshall), red oak (Quercus rubra L.), and tundra dwarf willow (Salix pulchra Cham.), the suppression of isoprene by elevated CO2 was eliminated at increased temperature, and the maximum temperature where suppression was observed ranged from 25 to 35°C. Hypotheses proposed to explain the short-term suppression of isoprene emission by increased CO2 concentration were tested against this observation. Hypotheses related to cofactors in the methylerythritol phosphate (MEP) pathway were consistent with reduced suppression at elevated leaf temperature. Also, reduced solubility of CO2 with increased temperature can explain the reduced suppression for the phosphoenolpyruvate (PEP) carboxylase competition hypothesis. Some global models of isoprene emission include the short-term suppression effect, and should be modified to include the observed interaction. If these results are consistent at longer timescales, there are implications for predicting future global isoprene emission budgets and the reduced suppression at increased temperature could explain some of the variable responses observed in long-term CO2 exposure experiments.</AbstractText><CopyrightInformation>Copyright © 2014 Elsevier B.V. All rights reserved.</CopyrightInformation></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Potosnak</LastName><ForeName>Mark J</ForeName><Initials>MJ</Initials><AffiliationInfo><Affiliation>Department of Environmental Science and Studies, DePaul University, Chicago, IL 60614, USA. Electronic address: mpotosna@depaul.edu.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Lestourgeon</LastName><ForeName>Lauren</ForeName><Initials>L</Initials><AffiliationInfo><Affiliation>Department of Environmental Science and Studies, DePaul University, Chicago, IL 60614, USA.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Nunez</LastName><ForeName>Othon</ForeName><Initials>O</Initials><AffiliationInfo><Affiliation>Department of Environmental Science and Studies, DePaul University, Chicago, IL 60614, USA.</Affiliation></AffiliationInfo></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType><PublicationType UI="D013486">Research Support, U.S. Gov't, Non-P.H.S.</PublicationType></PublicationTypeList><ArticleDate DateType="Electronic"><Year>2014</Year><Month>03</Month><Day>10</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="D002070">Butadienes</NameOfSubstance></Chemical><Chemical><RegistryNumber>0</RegistryNumber><NameOfSubstance UI="D045782">Hemiterpenes</NameOfSubstance></Chemical><Chemical><RegistryNumber>0</RegistryNumber><NameOfSubstance UI="D010420">Pentanes</NameOfSubstance></Chemical><Chemical><RegistryNumber>0A62964IBU</RegistryNumber><NameOfSubstance UI="C005059">isoprene</NameOfSubstance></Chemical><Chemical><RegistryNumber>142M471B3J</RegistryNumber><NameOfSubstance UI="D002245">Carbon Dioxide</NameOfSubstance></Chemical></ChemicalList><CitationSubset>IM</CitationSubset><MeshHeadingList><MeshHeading><DescriptorName UI="D002070" MajorTopicYN="N">Butadienes</DescriptorName><QualifierName UI="Q000378" MajorTopicYN="Y">metabolism</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D002245" MajorTopicYN="N">Carbon Dioxide</DescriptorName><QualifierName UI="Q000032" MajorTopicYN="Y">analysis</QualifierName><QualifierName UI="Q000378" MajorTopicYN="N">metabolism</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D057231" MajorTopicYN="Y">Climate Change</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D045782" MajorTopicYN="N">Hemiterpenes</DescriptorName><QualifierName UI="Q000378" MajorTopicYN="Y">metabolism</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D010420" MajorTopicYN="N">Pentanes</DescriptorName><QualifierName UI="Q000378" MajorTopicYN="Y">metabolism</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D018515" MajorTopicYN="N">Plant Leaves</DescriptorName><QualifierName UI="Q000378" MajorTopicYN="N">metabolism</QualifierName><QualifierName UI="Q000502" MajorTopicYN="Y">physiology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D032107" MajorTopicYN="N">Populus</DescriptorName><QualifierName UI="Q000502" MajorTopicYN="N">physiology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D029963" MajorTopicYN="N">Quercus</DescriptorName><QualifierName UI="Q000502" MajorTopicYN="N">physiology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D032108" MajorTopicYN="N">Salix</DescriptorName><QualifierName UI="Q000502" MajorTopicYN="N">physiology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D013696" MajorTopicYN="Y">Temperature</DescriptorName></MeshHeading></MeshHeadingList><KeywordList Owner="NOTNLM"><Keyword MajorTopicYN="N">Elevated carbon dioxide (CO(2))</Keyword><Keyword MajorTopicYN="N">Global isoprene models</Keyword><Keyword MajorTopicYN="N">Isoprene</Keyword><Keyword MajorTopicYN="N">Leaf temperature</Keyword></KeywordList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="received"><Year>2013</Year><Month>09</Month><Day>26</Day></PubMedPubDate><PubMedPubDate PubStatus="revised"><Year>2013</Year><Month>12</Month><Day>09</Day></PubMedPubDate><PubMedPubDate PubStatus="accepted"><Year>2014</Year><Month>02</Month><Day>15</Day></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>2014</Year><Month>3</Month><Day>12</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="pubmed"><Year>2014</Year><Month>3</Month><Day>13</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2014</Year><Month>10</Month><Day>7</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">24614154</ArticleId><ArticleId IdType="pii">S0048-9697(14)00239-3</ArticleId><ArticleId IdType="doi">10.1016/j.scitotenv.2014.02.065</ArticleId></ArticleIdList></PubmedData></pubmed><affiliations><list><country><li>États-Unis</li></country><region><li>Illinois</li></region></list><tree><country name="États-Unis"><region name="Illinois"><name sortKey="Potosnak, Mark J" sort="Potosnak, Mark J" uniqKey="Potosnak M" first="Mark J" last="Potosnak">Mark J. Potosnak</name></region><name sortKey="Lestourgeon, Lauren" sort="Lestourgeon, Lauren" uniqKey="Lestourgeon L" first="Lauren" last="Lestourgeon">Lauren Lestourgeon</name><name sortKey="Nunez, Othon" sort="Nunez, Othon" uniqKey="Nunez O" first="Othon" last="Nunez">Othon Nunez</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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