Common trade-offs between xylem resistance to cavitation and other physiological traits do not hold among unrelated Populus deltoides x Populus nigra hybrids.
Identifieur interne : 003334 ( Main/Exploration ); précédent : 003333; suivant : 003335Common trade-offs between xylem resistance to cavitation and other physiological traits do not hold among unrelated Populus deltoides x Populus nigra hybrids.
Auteurs : Régis Fichot [France] ; Têtè S. Barigah ; Sylvain Chamaillard ; Dider Le Thiec ; Françoise Laurans ; Hervé Cochard ; Franck BrignolasSource :
- Plant, cell & environment [ 1365-3040 ] ; 2010.
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Abstract
We examined the relationships between xylem resistance to cavitation and 16 structural and functional traits across eight unrelated Populus deltoides x Populus nigra genotypes grown under two contrasting water regimes. The xylem water potential inducing 50% loss of hydraulic conductance (Psi(50)) varied from -1.60 to -2.40 MPa. Drought-acclimated trees displayed a safer xylem, although the extent of the response was largely genotype dependent, with Psi(50) being decreased by as far as 0.60 MPa. At the tissue level, there was no clear relationship between xylem safety and either xylem water transport efficiency or xylem biomechanics; the only structural trait to be strongly associated with Psi(50) was the double vessel wall thickness, genotypes exhibiting a thicker double wall being more resistant. At the leaf level, increased cavitation resistance was associated with decreased stomatal conductance, while no relationship could be identified with traits associated with carbon uptake or bulk leaf carbon isotope discrimination, a surrogate of intrinsic water-use efficiency. At the whole-plant level, increased safety was associated with higher shoot growth potential under well-irrigated regime only. We conclude that common trade-offs between xylem resistance to cavitation and other physiological traits that are observed across species may not necessarily hold true at narrower scales.
DOI: 10.1111/j.1365-3040.2010.02164.x
PubMed: 20444213
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Barigah</name></author><author><name sortKey="Chamaillard, Sylvain" sort="Chamaillard, Sylvain" uniqKey="Chamaillard S" first="Sylvain" last="Chamaillard">Sylvain Chamaillard</name></author><author><name sortKey="Le Thiec, Dider" sort="Le Thiec, Dider" uniqKey="Le Thiec D" first="Dider" last="Le Thiec">Dider Le Thiec</name></author><author><name sortKey="Laurans, Francoise" sort="Laurans, Francoise" uniqKey="Laurans F" first="Françoise" last="Laurans">Françoise Laurans</name></author><author><name sortKey="Cochard, Herve" sort="Cochard, Herve" uniqKey="Cochard H" first="Hervé" last="Cochard">Hervé Cochard</name></author><author><name sortKey="Brignolas, Franck" sort="Brignolas, Franck" uniqKey="Brignolas F" first="Franck" last="Brignolas">Franck Brignolas</name></author></titleStmt><publicationStmt><idno type="wicri:source">PubMed</idno><date when="2010">2010</date><idno type="RBID">pubmed:20444213</idno><idno type="pmid">20444213</idno><idno type="doi">10.1111/j.1365-3040.2010.02164.x</idno><idno type="wicri:Area/Main/Corpus">003195</idno><idno type="wicri:explorRef" wicri:stream="Main" wicri:step="Corpus" wicri:corpus="PubMed">003195</idno><idno type="wicri:Area/Main/Curation">003195</idno><idno type="wicri:explorRef" wicri:stream="Main" wicri:step="Curation">003195</idno><idno type="wicri:Area/Main/Exploration">003195</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en">Common trade-offs between xylem resistance to cavitation and other physiological traits do not hold among unrelated Populus deltoides x Populus nigra hybrids.</title><author><name sortKey="Fichot, Regis" sort="Fichot, Regis" uniqKey="Fichot R" first="Régis" last="Fichot">Régis Fichot</name><affiliation wicri:level="4"><nlm:affiliation>Université d'Orléans, UFR-Faculté des Sciences, UPRES EA 1207 Laboratoire de Biologie des Ligneux et des Grandes Cultures, BP 6759, France.</nlm:affiliation><country xml:lang="fr">France</country><wicri:regionArea>Université d'Orléans, UFR-Faculté des Sciences, UPRES EA 1207 Laboratoire de Biologie des Ligneux et des Grandes Cultures, BP 6759</wicri:regionArea><wicri:noRegion>BP 6759</wicri:noRegion><orgName type="university">Université d'Orléans</orgName><placeName><settlement type="city">Orléans</settlement><region type="old region" nuts="2">Région Centre</region><region type="region" nuts="2">Centre-Val de Loire</region></placeName></affiliation></author><author><name sortKey="Barigah, Tete S" sort="Barigah, Tete S" uniqKey="Barigah T" first="Têtè S" last="Barigah">Têtè S. Barigah</name></author><author><name sortKey="Chamaillard, Sylvain" sort="Chamaillard, Sylvain" uniqKey="Chamaillard S" first="Sylvain" last="Chamaillard">Sylvain Chamaillard</name></author><author><name sortKey="Le Thiec, Dider" sort="Le Thiec, Dider" uniqKey="Le Thiec D" first="Dider" last="Le Thiec">Dider Le Thiec</name></author><author><name sortKey="Laurans, Francoise" sort="Laurans, Francoise" uniqKey="Laurans F" first="Françoise" last="Laurans">Françoise Laurans</name></author><author><name sortKey="Cochard, Herve" sort="Cochard, Herve" uniqKey="Cochard H" first="Hervé" last="Cochard">Hervé Cochard</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">Plant, cell & environment</title><idno type="eISSN">1365-3040</idno><imprint><date when="2010" type="published">2010</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Carbon (analysis)</term><term>Carbon Isotopes (analysis)</term><term>Genotype (MeSH)</term><term>Populus (genetics)</term><term>Populus (physiology)</term><term>Water (physiology)</term><term>Xylem (anatomy & histology)</term><term>Xylem (genetics)</term><term>Xylem (physiology)</term></keywords><keywords scheme="KwdFr" xml:lang="fr"><term>Carbone (analyse)</term><term>Eau (physiologie)</term><term>Génotype (MeSH)</term><term>Isotopes du carbone (analyse)</term><term>Populus (génétique)</term><term>Populus (physiologie)</term><term>Xylème (anatomie et histologie)</term><term>Xylème (génétique)</term><term>Xylème (physiologie)</term></keywords><keywords scheme="MESH" type="chemical" qualifier="analysis" xml:lang="en"><term>Carbon</term><term>Carbon Isotopes</term></keywords><keywords scheme="MESH" qualifier="analyse" xml:lang="fr"><term>Carbone</term><term>Isotopes du carbone</term></keywords><keywords scheme="MESH" qualifier="anatomie et histologie" xml:lang="fr"><term>Xylème</term></keywords><keywords scheme="MESH" qualifier="anatomy & histology" xml:lang="en"><term>Xylem</term></keywords><keywords scheme="MESH" qualifier="genetics" xml:lang="en"><term>Populus</term><term>Xylem</term></keywords><keywords scheme="MESH" qualifier="génétique" xml:lang="fr"><term>Populus</term><term>Xylème</term></keywords><keywords scheme="MESH" qualifier="physiologie" xml:lang="fr"><term>Eau</term><term>Populus</term><term>Xylème</term></keywords><keywords scheme="MESH" qualifier="physiology" xml:lang="en"><term>Populus</term><term>Water</term><term>Xylem</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Genotype</term></keywords><keywords scheme="MESH" xml:lang="fr"><term>Génotype</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">We examined the relationships between xylem resistance to cavitation and 16 structural and functional traits across eight unrelated Populus deltoides x Populus nigra genotypes grown under two contrasting water regimes. The xylem water potential inducing 50% loss of hydraulic conductance (Psi(50)) varied from -1.60 to -2.40 MPa. Drought-acclimated trees displayed a safer xylem, although the extent of the response was largely genotype dependent, with Psi(50) being decreased by as far as 0.60 MPa. At the tissue level, there was no clear relationship between xylem safety and either xylem water transport efficiency or xylem biomechanics; the only structural trait to be strongly associated with Psi(50) was the double vessel wall thickness, genotypes exhibiting a thicker double wall being more resistant. At the leaf level, increased cavitation resistance was associated with decreased stomatal conductance, while no relationship could be identified with traits associated with carbon uptake or bulk leaf carbon isotope discrimination, a surrogate of intrinsic water-use efficiency. At the whole-plant level, increased safety was associated with higher shoot growth potential under well-irrigated regime only. We conclude that common trade-offs between xylem resistance to cavitation and other physiological traits that are observed across species may not necessarily hold true at narrower scales.</div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">20444213</PMID><DateCompleted><Year>2010</Year><Month>10</Month><Day>26</Day></DateCompleted><DateRevised><Year>2013</Year><Month>11</Month><Day>21</Day></DateRevised><Article PubModel="Print-Electronic"><Journal><ISSN IssnType="Electronic">1365-3040</ISSN><JournalIssue CitedMedium="Internet"><Volume>33</Volume><Issue>9</Issue><PubDate><Year>2010</Year><Month>Sep</Month></PubDate></JournalIssue><Title>Plant, cell & environment</Title><ISOAbbreviation>Plant Cell Environ</ISOAbbreviation></Journal><ArticleTitle>Common trade-offs between xylem resistance to cavitation and other physiological traits do not hold among unrelated Populus deltoides x Populus nigra hybrids.</ArticleTitle><Pagination><MedlinePgn>1553-68</MedlinePgn></Pagination><ELocationID EIdType="doi" ValidYN="Y">10.1111/j.1365-3040.2010.02164.x</ELocationID><Abstract><AbstractText>We examined the relationships between xylem resistance to cavitation and 16 structural and functional traits across eight unrelated Populus deltoides x Populus nigra genotypes grown under two contrasting water regimes. The xylem water potential inducing 50% loss of hydraulic conductance (Psi(50)) varied from -1.60 to -2.40 MPa. Drought-acclimated trees displayed a safer xylem, although the extent of the response was largely genotype dependent, with Psi(50) being decreased by as far as 0.60 MPa. At the tissue level, there was no clear relationship between xylem safety and either xylem water transport efficiency or xylem biomechanics; the only structural trait to be strongly associated with Psi(50) was the double vessel wall thickness, genotypes exhibiting a thicker double wall being more resistant. At the leaf level, increased cavitation resistance was associated with decreased stomatal conductance, while no relationship could be identified with traits associated with carbon uptake or bulk leaf carbon isotope discrimination, a surrogate of intrinsic water-use efficiency. At the whole-plant level, increased safety was associated with higher shoot growth potential under well-irrigated regime only. 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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="Laurans, Francoise" sort="Laurans, Francoise" uniqKey="Laurans F" first="Françoise" last="Laurans">Françoise Laurans</name><name sortKey="Le Thiec, Dider" sort="Le Thiec, Dider" uniqKey="Le Thiec D" first="Dider" last="Le Thiec">Dider Le Thiec</name></noCountry><country name="France"><region name="Région Centre"><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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