Effects of drought and changes in vapour pressure deficit on water relations of Populus deltoides growing in ambient and elevated CO2.
Identifieur interne : 003291 ( Main/Exploration ); précédent : 003290; suivant : 003292Effects of drought and changes in vapour pressure deficit on water relations of Populus deltoides growing in ambient and elevated CO2.
Auteurs : Edward G. Bobich [États-Unis] ; Greg A. Barron-Gafford ; Katherine G. Rascher ; Ramesh MurthySource :
- Tree physiology [ 0829-318X ] ; 2010.
Descripteurs français
- KwdFr :
- MESH :
- effets des médicaments et des substances chimiques : Populus.
- métabolisme : Eau.
- pharmacologie : Dioxyde de carbone.
- physiologie : Bois, Populus.
- Environnement, Feuilles de plante, Pression de vapeur, Sol, Sécheresses.
English descriptors
- KwdEn :
- MESH :
- chemical , metabolism : Water.
- chemical , pharmacology : Carbon Dioxide.
- drug effects : Populus.
- physiology : Populus, Wood.
- Droughts, Environment, Plant Leaves, Soil, Vapor Pressure.
Abstract
The means by which growth CO(2) concentration ([CO(2)]) affects anatomy and water relations responses to drought and vapour pressure deficit (VPD) were studied for yearly coppiced, 4-year-old Populus deltoides clones that were grown in either 400 mumol mol(-1) (ambient) or 800 mumol mol(-1) (elevated) CO(2) for 3 years. It was hypothesized that, during drought, trees growing in elevated [CO(2)] would have a lower volume flux density of water (J(V)), stomatal conductance (g(s)) and transpiration per leaf area (E), as well as a lower stomatal density and a greater stomatal response to drought and changes in VPD than would trees in ambient [CO(2)]. Trees in elevated [CO(2)] actually had higher J(V) values throughout the study, but did not differ from trees in ambient [CO(2)] with respect to g(s) or E under saturating light or E scaled from J(V) (E(scaled)), all of which indicates that the higher J(V) in elevated [CO(2)] resulted from those trees having greater leaf area and not from differences in g(s). Furthermore, although plants in elevated [CO(2)] had greater absolute leaf loss during the drought, the percentage of leaf area lost was similar to that of trees in ambient [CO(2)]. g(s) and E under saturating light were affected by changes in VPD after the first 9 days of the experiment, which coincided with a large decrease in water potential at a soil depth of 0.1 m. Trees in elevated [CO(2)] had a greater stomatal density and a lower wood density than trees in ambient [CO(2)], both traits that may make the trees more susceptible to xylem cavitation in severe drought. Drought and VPD effects for the P. deltoides clone were not ameliorated by long-term growth in elevated [CO(2)] compared with ambient [CO(2)], and plants in elevated [CO(2)] possessed anatomical traits that may result in greater stress associated with long-term drought.
DOI: 10.1093/treephys/tpq036
PubMed: 20462939
Affiliations:
Links toward previous steps (curation, corpus...)
Le document en format XML
<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en">Effects of drought and changes in vapour pressure deficit on water relations of Populus deltoides growing in ambient and elevated CO2.</title><author><name sortKey="Bobich, Edward G" sort="Bobich, Edward G" uniqKey="Bobich E" first="Edward G" last="Bobich">Edward G. Bobich</name><affiliation wicri:level="4"><nlm:affiliation>Biosphere 2 Center, Columbia University, Oracle, AZ 85623, USA. egbobich@csupomona.edu</nlm:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>Biosphere 2 Center, Columbia University, Oracle, AZ 85623</wicri:regionArea><placeName><region type="state">Arizona</region><settlement type="city">New York</settlement></placeName><orgName type="university">Université Columbia</orgName></affiliation></author><author><name sortKey="Barron Gafford, Greg A" sort="Barron Gafford, Greg A" uniqKey="Barron Gafford G" first="Greg A" last="Barron-Gafford">Greg A. Barron-Gafford</name></author><author><name sortKey="Rascher, Katherine G" sort="Rascher, Katherine G" uniqKey="Rascher K" first="Katherine G" last="Rascher">Katherine G. Rascher</name></author><author><name sortKey="Murthy, Ramesh" sort="Murthy, Ramesh" uniqKey="Murthy R" first="Ramesh" last="Murthy">Ramesh Murthy</name></author></titleStmt><publicationStmt><idno type="wicri:source">PubMed</idno><date when="2010">2010</date><idno type="RBID">pubmed:20462939</idno><idno type="pmid">20462939</idno><idno type="doi">10.1093/treephys/tpq036</idno><idno type="wicri:Area/Main/Corpus">003188</idno><idno type="wicri:explorRef" wicri:stream="Main" wicri:step="Corpus" wicri:corpus="PubMed">003188</idno><idno type="wicri:Area/Main/Curation">003188</idno><idno type="wicri:explorRef" wicri:stream="Main" wicri:step="Curation">003188</idno><idno type="wicri:Area/Main/Exploration">003188</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en">Effects of drought and changes in vapour pressure deficit on water relations of Populus deltoides growing in ambient and elevated CO2.</title><author><name sortKey="Bobich, Edward G" sort="Bobich, Edward G" uniqKey="Bobich E" first="Edward G" last="Bobich">Edward G. Bobich</name><affiliation wicri:level="4"><nlm:affiliation>Biosphere 2 Center, Columbia University, Oracle, AZ 85623, USA. egbobich@csupomona.edu</nlm:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>Biosphere 2 Center, Columbia University, Oracle, AZ 85623</wicri:regionArea><placeName><region type="state">Arizona</region><settlement type="city">New York</settlement></placeName><orgName type="university">Université Columbia</orgName></affiliation></author><author><name sortKey="Barron Gafford, Greg A" sort="Barron Gafford, Greg A" uniqKey="Barron Gafford G" first="Greg A" last="Barron-Gafford">Greg A. Barron-Gafford</name></author><author><name sortKey="Rascher, Katherine G" sort="Rascher, Katherine G" uniqKey="Rascher K" first="Katherine G" last="Rascher">Katherine G. Rascher</name></author><author><name sortKey="Murthy, Ramesh" sort="Murthy, Ramesh" uniqKey="Murthy R" first="Ramesh" last="Murthy">Ramesh Murthy</name></author></analytic><series><title level="j">Tree physiology</title><idno type="ISSN">0829-318X</idno><imprint><date when="2010" type="published">2010</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Carbon Dioxide (pharmacology)</term><term>Droughts (MeSH)</term><term>Environment (MeSH)</term><term>Plant Leaves (MeSH)</term><term>Populus (drug effects)</term><term>Populus (physiology)</term><term>Soil (MeSH)</term><term>Vapor Pressure (MeSH)</term><term>Water (metabolism)</term><term>Wood (physiology)</term></keywords><keywords scheme="KwdFr" xml:lang="fr"><term>Bois (physiologie)</term><term>Dioxyde de carbone (pharmacologie)</term><term>Eau (métabolisme)</term><term>Environnement (MeSH)</term><term>Feuilles de plante (MeSH)</term><term>Populus (effets des médicaments et des substances chimiques)</term><term>Populus (physiologie)</term><term>Pression de vapeur (MeSH)</term><term>Sol (MeSH)</term><term>Sécheresses (MeSH)</term></keywords><keywords scheme="MESH" type="chemical" qualifier="metabolism" xml:lang="en"><term>Water</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>Populus</term></keywords><keywords scheme="MESH" qualifier="effets des médicaments et des substances chimiques" xml:lang="fr"><term>Populus</term></keywords><keywords scheme="MESH" qualifier="métabolisme" xml:lang="fr"><term>Eau</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>Bois</term><term>Populus</term></keywords><keywords scheme="MESH" qualifier="physiology" xml:lang="en"><term>Populus</term><term>Wood</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Droughts</term><term>Environment</term><term>Plant Leaves</term><term>Soil</term><term>Vapor Pressure</term></keywords><keywords scheme="MESH" xml:lang="fr"><term>Environnement</term><term>Feuilles de plante</term><term>Pression de vapeur</term><term>Sol</term><term>Sécheresses</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">The means by which growth CO(2) concentration ([CO(2)]) affects anatomy and water relations responses to drought and vapour pressure deficit (VPD) were studied for yearly coppiced, 4-year-old Populus deltoides clones that were grown in either 400 mumol mol(-1) (ambient) or 800 mumol mol(-1) (elevated) CO(2) for 3 years. It was hypothesized that, during drought, trees growing in elevated [CO(2)] would have a lower volume flux density of water (J(V)), stomatal conductance (g(s)) and transpiration per leaf area (E), as well as a lower stomatal density and a greater stomatal response to drought and changes in VPD than would trees in ambient [CO(2)]. Trees in elevated [CO(2)] actually had higher J(V) values throughout the study, but did not differ from trees in ambient [CO(2)] with respect to g(s) or E under saturating light or E scaled from J(V) (E(scaled)), all of which indicates that the higher J(V) in elevated [CO(2)] resulted from those trees having greater leaf area and not from differences in g(s). Furthermore, although plants in elevated [CO(2)] had greater absolute leaf loss during the drought, the percentage of leaf area lost was similar to that of trees in ambient [CO(2)]. g(s) and E under saturating light were affected by changes in VPD after the first 9 days of the experiment, which coincided with a large decrease in water potential at a soil depth of 0.1 m. Trees in elevated [CO(2)] had a greater stomatal density and a lower wood density than trees in ambient [CO(2)], both traits that may make the trees more susceptible to xylem cavitation in severe drought. Drought and VPD effects for the P. deltoides clone were not ameliorated by long-term growth in elevated [CO(2)] compared with ambient [CO(2)], and plants in elevated [CO(2)] possessed anatomical traits that may result in greater stress associated with long-term drought.</div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">20462939</PMID><DateCompleted><Year>2010</Year><Month>10</Month><Day>05</Day></DateCompleted><DateRevised><Year>2017</Year><Month>11</Month><Day>16</Day></DateRevised><Article PubModel="Print-Electronic"><Journal><ISSN IssnType="Print">0829-318X</ISSN><JournalIssue CitedMedium="Print"><Volume>30</Volume><Issue>7</Issue><PubDate><Year>2010</Year><Month>Jul</Month></PubDate></JournalIssue><Title>Tree physiology</Title><ISOAbbreviation>Tree Physiol</ISOAbbreviation></Journal><ArticleTitle>Effects of drought and changes in vapour pressure deficit on water relations of Populus deltoides growing in ambient and elevated CO2.</ArticleTitle><Pagination><MedlinePgn>866-75</MedlinePgn></Pagination><ELocationID EIdType="doi" ValidYN="Y">10.1093/treephys/tpq036</ELocationID><Abstract><AbstractText>The means by which growth CO(2) concentration ([CO(2)]) affects anatomy and water relations responses to drought and vapour pressure deficit (VPD) were studied for yearly coppiced, 4-year-old Populus deltoides clones that were grown in either 400 mumol mol(-1) (ambient) or 800 mumol mol(-1) (elevated) CO(2) for 3 years. It was hypothesized that, during drought, trees growing in elevated [CO(2)] would have a lower volume flux density of water (J(V)), stomatal conductance (g(s)) and transpiration per leaf area (E), as well as a lower stomatal density and a greater stomatal response to drought and changes in VPD than would trees in ambient [CO(2)]. Trees in elevated [CO(2)] actually had higher J(V) values throughout the study, but did not differ from trees in ambient [CO(2)] with respect to g(s) or E under saturating light or E scaled from J(V) (E(scaled)), all of which indicates that the higher J(V) in elevated [CO(2)] resulted from those trees having greater leaf area and not from differences in g(s). Furthermore, although plants in elevated [CO(2)] had greater absolute leaf loss during the drought, the percentage of leaf area lost was similar to that of trees in ambient [CO(2)]. g(s) and E under saturating light were affected by changes in VPD after the first 9 days of the experiment, which coincided with a large decrease in water potential at a soil depth of 0.1 m. Trees in elevated [CO(2)] had a greater stomatal density and a lower wood density than trees in ambient [CO(2)], both traits that may make the trees more susceptible to xylem cavitation in severe drought. Drought and VPD effects for the P. deltoides clone were not ameliorated by long-term growth in elevated [CO(2)] compared with ambient [CO(2)], and plants in elevated [CO(2)] possessed anatomical traits that may result in greater stress associated with long-term drought.</AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Bobich</LastName><ForeName>Edward G</ForeName><Initials>EG</Initials><AffiliationInfo><Affiliation>Biosphere 2 Center, Columbia University, Oracle, AZ 85623, USA. egbobich@csupomona.edu</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Barron-Gafford</LastName><ForeName>Greg A</ForeName><Initials>GA</Initials></Author><Author ValidYN="Y"><LastName>Rascher</LastName><ForeName>Katherine G</ForeName><Initials>KG</Initials></Author><Author ValidYN="Y"><LastName>Murthy</LastName><ForeName>Ramesh</ForeName><Initials>R</Initials></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType><PublicationType UI="D013485">Research Support, Non-U.S. Gov't</PublicationType></PublicationTypeList><ArticleDate DateType="Electronic"><Year>2010</Year><Month>05</Month><Day>12</Day></ArticleDate></Article><MedlineJournalInfo><Country>Canada</Country><MedlineTA>Tree Physiol</MedlineTA><NlmUniqueID>100955338</NlmUniqueID><ISSNLinking>0829-318X</ISSNLinking></MedlineJournalInfo><ChemicalList><Chemical><RegistryNumber>0</RegistryNumber><NameOfSubstance UI="D012987">Soil</NameOfSubstance></Chemical><Chemical><RegistryNumber>059QF0KO0R</RegistryNumber><NameOfSubstance UI="D014867">Water</NameOfSubstance></Chemical><Chemical><RegistryNumber>142M471B3J</RegistryNumber><NameOfSubstance UI="D002245">Carbon Dioxide</NameOfSubstance></Chemical></ChemicalList><CitationSubset>IM</CitationSubset><MeshHeadingList><MeshHeading><DescriptorName UI="D002245" MajorTopicYN="N">Carbon Dioxide</DescriptorName><QualifierName UI="Q000494" MajorTopicYN="Y">pharmacology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D055864" MajorTopicYN="Y">Droughts</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D004777" MajorTopicYN="N">Environment</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D018515" MajorTopicYN="N">Plant Leaves</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D032107" MajorTopicYN="N">Populus</DescriptorName><QualifierName UI="Q000187" MajorTopicYN="N">drug effects</QualifierName><QualifierName UI="Q000502" MajorTopicYN="Y">physiology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D012987" MajorTopicYN="N">Soil</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D055548" MajorTopicYN="Y">Vapor Pressure</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D014867" MajorTopicYN="N">Water</DescriptorName><QualifierName UI="Q000378" MajorTopicYN="Y">metabolism</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D014934" MajorTopicYN="N">Wood</DescriptorName><QualifierName UI="Q000502" MajorTopicYN="N">physiology</QualifierName></MeshHeading></MeshHeadingList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="entrez"><Year>2010</Year><Month>5</Month><Day>14</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="pubmed"><Year>2010</Year><Month>5</Month><Day>14</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2010</Year><Month>10</Month><Day>6</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">20462939</ArticleId><ArticleId IdType="pii">tpq036</ArticleId><ArticleId IdType="doi">10.1093/treephys/tpq036</ArticleId></ArticleIdList></PubmedData></pubmed><affiliations><list><country><li>États-Unis</li></country><region><li>Arizona</li></region><settlement><li>New York</li></settlement><orgName><li>Université Columbia</li></orgName></list><tree><noCountry><name sortKey="Barron Gafford, Greg A" sort="Barron Gafford, Greg A" uniqKey="Barron Gafford G" first="Greg A" last="Barron-Gafford">Greg A. Barron-Gafford</name><name sortKey="Murthy, Ramesh" sort="Murthy, Ramesh" uniqKey="Murthy R" first="Ramesh" last="Murthy">Ramesh Murthy</name><name sortKey="Rascher, Katherine G" sort="Rascher, Katherine G" uniqKey="Rascher K" first="Katherine G" last="Rascher">Katherine G. Rascher</name></noCountry><country name="États-Unis"><region name="Arizona"><name sortKey="Bobich, Edward G" sort="Bobich, Edward G" uniqKey="Bobich E" first="Edward G" last="Bobich">Edward G. Bobich</name></region></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
EXPLOR_STEP=$WICRI_ROOT/Bois/explor/PoplarV1/Data/Main/Exploration
HfdSelect -h $EXPLOR_STEP/biblio.hfd -nk 003291 | SxmlIndent | more
Ou
HfdSelect -h $EXPLOR_AREA/Data/Main/Exploration/biblio.hfd -nk 003291 | SxmlIndent | more
Pour mettre un lien sur cette page dans le réseau Wicri
{{Explor lien
|wiki= Bois
|area= PoplarV1
|flux= Main
|étape= Exploration
|type= RBID
|clé= pubmed:20462939
|texte= Effects of drought and changes in vapour pressure deficit on water relations of Populus deltoides growing in ambient and elevated CO2.
}}
Pour générer des pages wiki
HfdIndexSelect -h $EXPLOR_AREA/Data/Main/Exploration/RBID.i -Sk "pubmed:20462939" \
| HfdSelect -Kh $EXPLOR_AREA/Data/Main/Exploration/biblio.hfd \
| NlmPubMed2Wicri -a PoplarV1
| This area was generated with Dilib version V0.6.37. |  |