Hydraulic efficiency and coordination with xylem resistance to cavitation, leaf function, and growth performance among eight unrelated Populus deltoidesxPopulus nigra hybrids.
Identifieur interne : 002E35 ( Main/Exploration ); précédent : 002E34; suivant : 002E36Hydraulic efficiency and coordination with xylem resistance to cavitation, leaf function, and growth performance among eight unrelated Populus deltoidesxPopulus nigra hybrids.
Auteurs : Régis Fichot [France] ; Sylvain Chamaillard ; Claire Depardieu ; Didier Le Thiec ; Hervé Cochard ; Têtè S. Barigah ; Franck BrignolasSource :
- Journal of experimental botany [ 1460-2431 ] ; 2011.
Descripteurs français
- KwdFr :
- MESH :
- croissance et développement : Populus.
- génétique : Populus.
- physiologie : Eau, Stomates de plante, Xylème.
- Génotype, Transpiration des plantes.
English descriptors
- KwdEn :
- MESH :
- chemical , physiology : Water.
- genetics : Populus.
- growth & development : Populus.
- physiology : Plant Stomata, Xylem.
- Genotype, Plant Transpiration.
Abstract
Tests were carried out to determine whether variations in the hydraulic architecture of eight Populus deltoides×Populus nigra genotypes could be related to variations in leaf function and growth performance. Measurements were performed in a coppice plantation on 1-year-old shoots under optimal irrigation. Hydraulic architecture was characterized through estimates of hydraulic efficiency (the ratio of conducting sapwood area to leaf area, A(X):A(L); leaf- and xylem-specific hydraulic conductance of defoliated shoots, k(SL) and k(SS), respectively; apparent whole-plant leaf-specific hydraulic conductance, k(plant)) and xylem safety (water potential inducing 50% loss in hydraulic conductance). The eight genotypes spanned a significant range of k(SL) from 2.63 kg s(-1) m(-2) MPa(-1) to 4.18 kg s(-1) m(-2) MPa(-1), variations being mostly driven by k(SS) rather than A(X):A(L). There was a strong trade-off between hydraulic efficiency and xylem safety. Values of k(SL) correlated positively with k(plant), indicating that high-pressure flowmeter (HPFM) measurements of stem hydraulic efficiency accurately reflected whole-plant water transport efficiency of field-grown plants at maximum transpiration rate. No clear relationship could be found between hydraulic efficiency and either net CO(2) assimilation rates, water-use efficiency estimates (intrinsic water-use efficiency and carbon isotope discrimination against (13)C), or stomatal characteristics (stomatal density and stomatal pore area index). Estimates of hydraulic efficiency were negatively associated with relative growth rate. This unusual pattern, combined with the trade-off observed between hydraulic efficiency and xylem safety, provides the rationale for the positive link already reported between relative growth rate and xylem safety among the same eight P. deltoides×P. nigra genotypes.
DOI: 10.1093/jxb/erq415
PubMed: 21193576
Affiliations:
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Barigah</name></author><author><name sortKey="Brignolas, Franck" sort="Brignolas, Franck" uniqKey="Brignolas F" first="Franck" last="Brignolas">Franck Brignolas</name></author></analytic><series><title level="j">Journal of experimental botany</title><idno type="eISSN">1460-2431</idno><imprint><date when="2011" type="published">2011</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Genotype (MeSH)</term><term>Plant Stomata (physiology)</term><term>Plant Transpiration (MeSH)</term><term>Populus (genetics)</term><term>Populus (growth & development)</term><term>Water (physiology)</term><term>Xylem (physiology)</term></keywords><keywords scheme="KwdFr" xml:lang="fr"><term>Eau (physiologie)</term><term>Génotype (MeSH)</term><term>Populus (croissance et développement)</term><term>Populus (génétique)</term><term>Stomates de plante (physiologie)</term><term>Transpiration des plantes (MeSH)</term><term>Xylème (physiologie)</term></keywords><keywords scheme="MESH" type="chemical" qualifier="physiology" xml:lang="en"><term>Water</term></keywords><keywords scheme="MESH" qualifier="croissance et développement" xml:lang="fr"><term>Populus</term></keywords><keywords scheme="MESH" qualifier="genetics" xml:lang="en"><term>Populus</term></keywords><keywords scheme="MESH" qualifier="growth & development" xml:lang="en"><term>Populus</term></keywords><keywords scheme="MESH" qualifier="génétique" xml:lang="fr"><term>Populus</term></keywords><keywords scheme="MESH" qualifier="physiologie" xml:lang="fr"><term>Eau</term><term>Stomates de plante</term><term>Xylème</term></keywords><keywords scheme="MESH" qualifier="physiology" xml:lang="en"><term>Plant Stomata</term><term>Xylem</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Genotype</term><term>Plant Transpiration</term></keywords><keywords scheme="MESH" xml:lang="fr"><term>Génotype</term><term>Transpiration des plantes</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Tests were carried out to determine whether variations in the hydraulic architecture of eight Populus deltoides×Populus nigra genotypes could be related to variations in leaf function and growth performance. Measurements were performed in a coppice plantation on 1-year-old shoots under optimal irrigation. Hydraulic architecture was characterized through estimates of hydraulic efficiency (the ratio of conducting sapwood area to leaf area, A(X):A(L); leaf- and xylem-specific hydraulic conductance of defoliated shoots, k(SL) and k(SS), respectively; apparent whole-plant leaf-specific hydraulic conductance, k(plant)) and xylem safety (water potential inducing 50% loss in hydraulic conductance). The eight genotypes spanned a significant range of k(SL) from 2.63 kg s(-1) m(-2) MPa(-1) to 4.18 kg s(-1) m(-2) MPa(-1), variations being mostly driven by k(SS) rather than A(X):A(L). There was a strong trade-off between hydraulic efficiency and xylem safety. Values of k(SL) correlated positively with k(plant), indicating that high-pressure flowmeter (HPFM) measurements of stem hydraulic efficiency accurately reflected whole-plant water transport efficiency of field-grown plants at maximum transpiration rate. No clear relationship could be found between hydraulic efficiency and either net CO(2) assimilation rates, water-use efficiency estimates (intrinsic water-use efficiency and carbon isotope discrimination against (13)C), or stomatal characteristics (stomatal density and stomatal pore area index). Estimates of hydraulic efficiency were negatively associated with relative growth rate. This unusual pattern, combined with the trade-off observed between hydraulic efficiency and xylem safety, provides the rationale for the positive link already reported between relative growth rate and xylem safety among the same eight P. deltoides×P. nigra genotypes.</div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">21193576</PMID><DateCompleted><Year>2011</Year><Month>07</Month><Day>15</Day></DateCompleted><DateRevised><Year>2013</Year><Month>11</Month><Day>21</Day></DateRevised><Article PubModel="Print-Electronic"><Journal><ISSN IssnType="Electronic">1460-2431</ISSN><JournalIssue CitedMedium="Internet"><Volume>62</Volume><Issue>6</Issue><PubDate><Year>2011</Year><Month>Mar</Month></PubDate></JournalIssue><Title>Journal of experimental botany</Title><ISOAbbreviation>J Exp Bot</ISOAbbreviation></Journal><ArticleTitle>Hydraulic efficiency and coordination with xylem resistance to cavitation, leaf function, and growth performance among eight unrelated Populus deltoidesxPopulus nigra hybrids.</ArticleTitle><Pagination><MedlinePgn>2093-106</MedlinePgn></Pagination><ELocationID EIdType="doi" ValidYN="Y">10.1093/jxb/erq415</ELocationID><Abstract><AbstractText>Tests were carried out to determine whether variations in the hydraulic architecture of eight Populus deltoides×Populus nigra genotypes could be related to variations in leaf function and growth performance. Measurements were performed in a coppice plantation on 1-year-old shoots under optimal irrigation. Hydraulic architecture was characterized through estimates of hydraulic efficiency (the ratio of conducting sapwood area to leaf area, A(X):A(L); leaf- and xylem-specific hydraulic conductance of defoliated shoots, k(SL) and k(SS), respectively; apparent whole-plant leaf-specific hydraulic conductance, k(plant)) and xylem safety (water potential inducing 50% loss in hydraulic conductance). The eight genotypes spanned a significant range of k(SL) from 2.63 kg s(-1) m(-2) MPa(-1) to 4.18 kg s(-1) m(-2) MPa(-1), variations being mostly driven by k(SS) rather than A(X):A(L). There was a strong trade-off between hydraulic efficiency and xylem safety. Values of k(SL) correlated positively with k(plant), indicating that high-pressure flowmeter (HPFM) measurements of stem hydraulic efficiency accurately reflected whole-plant water transport efficiency of field-grown plants at maximum transpiration rate. No clear relationship could be found between hydraulic efficiency and either net CO(2) assimilation rates, water-use efficiency estimates (intrinsic water-use efficiency and carbon isotope discrimination against (13)C), or stomatal characteristics (stomatal density and stomatal pore area index). Estimates of hydraulic efficiency were negatively associated with relative growth rate. This unusual pattern, combined with the trade-off observed between hydraulic efficiency and xylem safety, provides the rationale for the positive link already reported between relative growth rate and xylem safety among the same eight P. deltoides×P. nigra genotypes.</AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Fichot</LastName><ForeName>Régis</ForeName><Initials>R</Initials><AffiliationInfo><Affiliation>Université d'Orléans, UFR-Faculté des Sciences, UPRES EA 1207 Laboratoire de Biologie des Ligneux et des Grandes Cultures (LBLGC), BP 6759, F-45067, France.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Chamaillard</LastName><ForeName>Sylvain</ForeName><Initials>S</Initials></Author><Author ValidYN="Y"><LastName>Depardieu</LastName><ForeName>Claire</ForeName><Initials>C</Initials></Author><Author ValidYN="Y"><LastName>Le Thiec</LastName><ForeName>Didier</ForeName><Initials>D</Initials></Author><Author ValidYN="Y"><LastName>Cochard</LastName><ForeName>Hervé</ForeName><Initials>H</Initials></Author><Author ValidYN="Y"><LastName>Barigah</LastName><ForeName>Têtè S</ForeName><Initials>TS</Initials></Author><Author ValidYN="Y"><LastName>Brignolas</LastName><ForeName>Franck</ForeName><Initials>F</Initials></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType UI="D003160">Comparative Study</PublicationType><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>12</Month><Day>30</Day></ArticleDate></Article><MedlineJournalInfo><Country>England</Country><MedlineTA>J Exp Bot</MedlineTA><NlmUniqueID>9882906</NlmUniqueID><ISSNLinking>0022-0957</ISSNLinking></MedlineJournalInfo><ChemicalList><Chemical><RegistryNumber>059QF0KO0R</RegistryNumber><NameOfSubstance UI="D014867">Water</NameOfSubstance></Chemical></ChemicalList><CitationSubset>IM</CitationSubset><MeshHeadingList><MeshHeading><DescriptorName UI="D005838" MajorTopicYN="N">Genotype</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D054046" MajorTopicYN="N">Plant Stomata</DescriptorName><QualifierName UI="Q000502" MajorTopicYN="Y">physiology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D018526" MajorTopicYN="N">Plant Transpiration</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D032107" MajorTopicYN="N">Populus</DescriptorName><QualifierName UI="Q000235" MajorTopicYN="N">genetics</QualifierName><QualifierName UI="Q000254" MajorTopicYN="Y">growth & development</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D014867" MajorTopicYN="N">Water</DescriptorName><QualifierName UI="Q000502" MajorTopicYN="Y">physiology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D052584" MajorTopicYN="N">Xylem</DescriptorName><QualifierName UI="Q000502" MajorTopicYN="Y">physiology</QualifierName></MeshHeading></MeshHeadingList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="entrez"><Year>2011</Year><Month>1</Month><Day>4</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="pubmed"><Year>2011</Year><Month>1</Month><Day>5</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2011</Year><Month>7</Month><Day>16</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">21193576</ArticleId><ArticleId IdType="pii">erq415</ArticleId><ArticleId IdType="doi">10.1093/jxb/erq415</ArticleId></ArticleIdList></PubmedData></pubmed><affiliations><list><country><li>France</li></country><region><li>Centre-Val de Loire</li><li>Région Centre</li></region><orgName><li>Université d'Orléans</li></orgName></list><tree><noCountry><name sortKey="Barigah, Tete S" sort="Barigah, Tete S" uniqKey="Barigah T" first="Têtè S" last="Barigah">Têtè S. Barigah</name><name sortKey="Brignolas, Franck" sort="Brignolas, Franck" uniqKey="Brignolas F" first="Franck" last="Brignolas">Franck Brignolas</name><name sortKey="Chamaillard, Sylvain" sort="Chamaillard, Sylvain" uniqKey="Chamaillard S" first="Sylvain" last="Chamaillard">Sylvain Chamaillard</name><name sortKey="Cochard, Herve" sort="Cochard, Herve" uniqKey="Cochard H" first="Hervé" last="Cochard">Hervé Cochard</name><name sortKey="Depardieu, Claire" sort="Depardieu, Claire" uniqKey="Depardieu C" first="Claire" last="Depardieu">Claire Depardieu</name><name sortKey="Le Thiec, Didier" sort="Le Thiec, Didier" uniqKey="Le Thiec D" first="Didier" last="Le Thiec">Didier Le Thiec</name></noCountry><country name="France"><region name="Centre-Val de Loire"><name sortKey="Fichot, Regis" sort="Fichot, Regis" uniqKey="Fichot R" first="Régis" last="Fichot">Régis Fichot</name></region></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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