Trade-offs between xylem hydraulic properties, wood anatomy and yield in Populus.
Identifieur interne : 001F95 ( Main/Exploration ); précédent : 001F94; suivant : 001F96Trade-offs between xylem hydraulic properties, wood anatomy and yield in Populus.
Auteurs : Peter Hajek [Allemagne] ; Christoph Leuschner [Allemagne] ; Dietrich Hertel [Allemagne] ; Sylvain Delzon [France] ; Bernhard Schuldt [Allemagne]Source :
- Tree physiology [ 1758-4469 ] ; 2014.
Descripteurs français
- KwdFr :
- Arbres (anatomie et histologie), Arbres (génétique), Arbres (physiologie), Bois (anatomie et histologie), Bois (physiologie), Populus (anatomie et histologie), Populus (génétique), Populus (physiologie), Pousses de plante (anatomie et histologie), Pousses de plante (physiologie), Racines de plante (anatomie et histologie), Racines de plante (physiologie), Spécificité d'espèce (MeSH), Transpiration des plantes (MeSH), Xylème (anatomie et histologie), Xylème (physiologie).
- MESH :
- anatomie et histologie : Arbres, Bois, Populus, Pousses de plante, Racines de plante, Xylème.
- génétique : Arbres, Populus.
- physiologie : Arbres, Bois, Populus, Pousses de plante, Racines de plante, Xylème.
- Spécificité d'espèce, Transpiration des plantes.
English descriptors
- KwdEn :
- Plant Roots (anatomy & histology), Plant Roots (physiology), Plant Shoots (anatomy & histology), Plant Shoots (physiology), Plant Transpiration (MeSH), Populus (anatomy & histology), Populus (genetics), Populus (physiology), Species Specificity (MeSH), Trees (anatomy & histology), Trees (genetics), Trees (physiology), Wood (anatomy & histology), Wood (physiology), Xylem (anatomy & histology), Xylem (physiology).
- MESH :
- anatomy & histology : Plant Roots, Plant Shoots, Populus, Trees, Wood, Xylem.
- genetics : Populus, Trees.
- physiology : Plant Roots, Plant Shoots, Populus, Trees, Wood, Xylem.
- Plant Transpiration, Species Specificity.
Abstract
Trees face the dilemma that achieving high plant productivity is accompanied by a risk of drought-induced hydraulic failure due to a trade-off in the trees' vascular system between hydraulic efficiency and safety. By investigating the xylem anatomy of branches and coarse roots, and measuring branch axial hydraulic conductivity and vulnerability to cavitation in 4-year-old field-grown aspen plants of five demes (Populus tremula L. and Populus tremuloides Michx.) differing in growth rate, we tested the hypotheses that (i) demes differ in wood anatomical and hydraulic properties, (ii) hydraulic efficiency and safety are related to xylem anatomical traits, and (iii) aboveground productivity and hydraulic efficiency are negatively correlated to cavitation resistance. Significant deme differences existed in seven of the nine investigated branch-related anatomical and hydraulic traits but only in one of the four coarse-root-related anatomical traits; this likely is a consequence of high intra-plant variation in root morphology and the occurrence of a few 'high-conductivity roots'. Growth rate was positively related to branch hydraulic efficiency (xylem-specific conductivity) but not to cavitation resistance; this indicates that no marked trade-off exists between cavitation resistance and growth. Both branch hydraulic safety and hydraulic efficiency significantly depended on vessel size and were related to the genetic distance between the demes, while the xylem pressure causing 88% loss of hydraulic conductivity (P88 value) was more closely related to hydraulic efficiency than the commonly used P50 value. Deme-specific variation in the pit membrane structure may explain why vessel size was not directly linked to growth rate. We conclude that branch hydraulic efficiency is an important growth-influencing trait in aspen, while the assumed trade-off between productivity and hydraulic safety is weak.
DOI: 10.1093/treephys/tpu048
PubMed: 25009155
Affiliations:
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(anatomie et histologie)</term><term>Racines de plante (physiologie)</term><term>Spécificité d'espèce (MeSH)</term><term>Transpiration des plantes (MeSH)</term><term>Xylème (anatomie et histologie)</term><term>Xylème (physiologie)</term></keywords><keywords scheme="MESH" qualifier="anatomie et histologie" xml:lang="fr"><term>Arbres</term><term>Bois</term><term>Populus</term><term>Pousses de plante</term><term>Racines de plante</term><term>Xylème</term></keywords><keywords scheme="MESH" qualifier="anatomy & histology" xml:lang="en"><term>Plant Roots</term><term>Plant Shoots</term><term>Populus</term><term>Trees</term><term>Wood</term><term>Xylem</term></keywords><keywords scheme="MESH" qualifier="genetics" xml:lang="en"><term>Populus</term><term>Trees</term></keywords><keywords scheme="MESH" qualifier="génétique" xml:lang="fr"><term>Arbres</term><term>Populus</term></keywords><keywords scheme="MESH" qualifier="physiologie" xml:lang="fr"><term>Arbres</term><term>Bois</term><term>Populus</term><term>Pousses de plante</term><term>Racines de plante</term><term>Xylème</term></keywords><keywords scheme="MESH" qualifier="physiology" xml:lang="en"><term>Plant Roots</term><term>Plant Shoots</term><term>Populus</term><term>Trees</term><term>Wood</term><term>Xylem</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Plant Transpiration</term><term>Species Specificity</term></keywords><keywords scheme="MESH" xml:lang="fr"><term>Spécificité d'espèce</term><term>Transpiration des plantes</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Trees face the dilemma that achieving high plant productivity is accompanied by a risk of drought-induced hydraulic failure due to a trade-off in the trees' vascular system between hydraulic efficiency and safety. By investigating the xylem anatomy of branches and coarse roots, and measuring branch axial hydraulic conductivity and vulnerability to cavitation in 4-year-old field-grown aspen plants of five demes (Populus tremula L. and Populus tremuloides Michx.) differing in growth rate, we tested the hypotheses that (i) demes differ in wood anatomical and hydraulic properties, (ii) hydraulic efficiency and safety are related to xylem anatomical traits, and (iii) aboveground productivity and hydraulic efficiency are negatively correlated to cavitation resistance. Significant deme differences existed in seven of the nine investigated branch-related anatomical and hydraulic traits but only in one of the four coarse-root-related anatomical traits; this likely is a consequence of high intra-plant variation in root morphology and the occurrence of a few 'high-conductivity roots'. Growth rate was positively related to branch hydraulic efficiency (xylem-specific conductivity) but not to cavitation resistance; this indicates that no marked trade-off exists between cavitation resistance and growth. Both branch hydraulic safety and hydraulic efficiency significantly depended on vessel size and were related to the genetic distance between the demes, while the xylem pressure causing 88% loss of hydraulic conductivity (P88 value) was more closely related to hydraulic efficiency than the commonly used P50 value. Deme-specific variation in the pit membrane structure may explain why vessel size was not directly linked to growth rate. We conclude that branch hydraulic efficiency is an important growth-influencing trait in aspen, while the assumed trade-off between productivity and hydraulic safety is weak. </div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">25009155</PMID><DateCompleted><Year>2015</Year><Month>04</Month><Day>13</Day></DateCompleted><DateRevised><Year>2014</Year><Month>08</Month><Day>15</Day></DateRevised><Article PubModel="Print-Electronic"><Journal><ISSN IssnType="Electronic">1758-4469</ISSN><JournalIssue CitedMedium="Internet"><Volume>34</Volume><Issue>7</Issue><PubDate><Year>2014</Year><Month>Jul</Month></PubDate></JournalIssue><Title>Tree physiology</Title><ISOAbbreviation>Tree Physiol</ISOAbbreviation></Journal><ArticleTitle>Trade-offs between xylem hydraulic properties, wood anatomy and yield in Populus.</ArticleTitle><Pagination><MedlinePgn>744-56</MedlinePgn></Pagination><ELocationID EIdType="doi" ValidYN="Y">10.1093/treephys/tpu048</ELocationID><Abstract><AbstractText>Trees face the dilemma that achieving high plant productivity is accompanied by a risk of drought-induced hydraulic failure due to a trade-off in the trees' vascular system between hydraulic efficiency and safety. By investigating the xylem anatomy of branches and coarse roots, and measuring branch axial hydraulic conductivity and vulnerability to cavitation in 4-year-old field-grown aspen plants of five demes (Populus tremula L. and Populus tremuloides Michx.) differing in growth rate, we tested the hypotheses that (i) demes differ in wood anatomical and hydraulic properties, (ii) hydraulic efficiency and safety are related to xylem anatomical traits, and (iii) aboveground productivity and hydraulic efficiency are negatively correlated to cavitation resistance. Significant deme differences existed in seven of the nine investigated branch-related anatomical and hydraulic traits but only in one of the four coarse-root-related anatomical traits; this likely is a consequence of high intra-plant variation in root morphology and the occurrence of a few 'high-conductivity roots'. Growth rate was positively related to branch hydraulic efficiency (xylem-specific conductivity) but not to cavitation resistance; this indicates that no marked trade-off exists between cavitation resistance and growth. Both branch hydraulic safety and hydraulic efficiency significantly depended on vessel size and were related to the genetic distance between the demes, while the xylem pressure causing 88% loss of hydraulic conductivity (P88 value) was more closely related to hydraulic efficiency than the commonly used P50 value. Deme-specific variation in the pit membrane structure may explain why vessel size was not directly linked to growth rate. We conclude that branch hydraulic efficiency is an important growth-influencing trait in aspen, while the assumed trade-off between productivity and hydraulic safety is weak. </AbstractText><CopyrightInformation>© The Author 2014. Published by Oxford University Press. All rights reserved. For Permissions, please email: journals.permissions@oup.com.</CopyrightInformation></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Hajek</LastName><ForeName>Peter</ForeName><Initials>P</Initials><AffiliationInfo><Affiliation>Plant Ecology, Albrecht von Haller Institute for Plant Sciences, University of Göttingen, Grisebachstr. 1, 37077 Göttingen, Germany phajek@gwdg.de.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Leuschner</LastName><ForeName>Christoph</ForeName><Initials>C</Initials><AffiliationInfo><Affiliation>Plant Ecology, Albrecht von Haller Institute for Plant Sciences, University of Göttingen, Grisebachstr. 1, 37077 Göttingen, Germany.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Hertel</LastName><ForeName>Dietrich</ForeName><Initials>D</Initials><AffiliationInfo><Affiliation>Plant Ecology, Albrecht von Haller Institute for Plant Sciences, University of Göttingen, Grisebachstr. 1, 37077 Göttingen, Germany.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Delzon</LastName><ForeName>Sylvain</ForeName><Initials>S</Initials><AffiliationInfo><Affiliation>INRA-University of Bordeaux, UMR BIOGECO, Avenue des Facultés, 33405 Talence, France.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Schuldt</LastName><ForeName>Bernhard</ForeName><Initials>B</Initials><AffiliationInfo><Affiliation>Plant Ecology, Albrecht von Haller Institute for Plant Sciences, University of Göttingen, Grisebachstr. 1, 37077 Göttingen, Germany.</Affiliation></AffiliationInfo></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>2014</Year><Month>07</Month><Day>08</Day></ArticleDate></Article><MedlineJournalInfo><Country>Canada</Country><MedlineTA>Tree Physiol</MedlineTA><NlmUniqueID>100955338</NlmUniqueID><ISSNLinking>0829-318X</ISSNLinking></MedlineJournalInfo><CitationSubset>IM</CitationSubset><MeshHeadingList><MeshHeading><DescriptorName UI="D018517" MajorTopicYN="N">Plant Roots</DescriptorName><QualifierName UI="Q000033" MajorTopicYN="N">anatomy & histology</QualifierName><QualifierName UI="Q000502" MajorTopicYN="N">physiology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D018520" MajorTopicYN="N">Plant Shoots</DescriptorName><QualifierName UI="Q000033" MajorTopicYN="N">anatomy & histology</QualifierName><QualifierName UI="Q000502" MajorTopicYN="N">physiology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D018526" MajorTopicYN="N">Plant Transpiration</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D032107" MajorTopicYN="N">Populus</DescriptorName><QualifierName UI="Q000033" MajorTopicYN="Y">anatomy & histology</QualifierName><QualifierName UI="Q000235" MajorTopicYN="N">genetics</QualifierName><QualifierName UI="Q000502" MajorTopicYN="Y">physiology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D013045" MajorTopicYN="N">Species Specificity</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D014197" MajorTopicYN="N">Trees</DescriptorName><QualifierName UI="Q000033" MajorTopicYN="N">anatomy & histology</QualifierName><QualifierName UI="Q000235" MajorTopicYN="N">genetics</QualifierName><QualifierName UI="Q000502" MajorTopicYN="N">physiology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D014934" MajorTopicYN="N">Wood</DescriptorName><QualifierName UI="Q000033" MajorTopicYN="Y">anatomy & histology</QualifierName><QualifierName UI="Q000502" MajorTopicYN="N">physiology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D052584" MajorTopicYN="N">Xylem</DescriptorName><QualifierName UI="Q000033" MajorTopicYN="N">anatomy & histology</QualifierName><QualifierName UI="Q000502" MajorTopicYN="Y">physiology</QualifierName></MeshHeading></MeshHeadingList><KeywordList Owner="NOTNLM"><Keyword MajorTopicYN="N">P50</Keyword><Keyword MajorTopicYN="N">coarse root and branch xylem anatomy</Keyword><Keyword MajorTopicYN="N">genetic variability</Keyword><Keyword MajorTopicYN="N">high-conductivity roots</Keyword><Keyword MajorTopicYN="N">hydraulic conductivity</Keyword><Keyword MajorTopicYN="N">relative growth rate</Keyword><Keyword MajorTopicYN="N">vessel diameter</Keyword><Keyword MajorTopicYN="N">vulnerability to cavitation</Keyword></KeywordList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="entrez"><Year>2014</Year><Month>7</Month><Day>11</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="pubmed"><Year>2014</Year><Month>7</Month><Day>11</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2015</Year><Month>4</Month><Day>14</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">25009155</ArticleId><ArticleId IdType="pii">tpu048</ArticleId><ArticleId IdType="doi">10.1093/treephys/tpu048</ArticleId></ArticleIdList></PubmedData></pubmed><affiliations><list><country><li>Allemagne</li><li>France</li></country><region><li>Aquitaine</li><li>Basse-Saxe</li><li>Nouvelle-Aquitaine</li></region><settlement><li>Göttingen</li><li>Talence</li></settlement></list><tree><country name="Allemagne"><region name="Basse-Saxe"><name sortKey="Hajek, Peter" sort="Hajek, Peter" uniqKey="Hajek P" first="Peter" last="Hajek">Peter Hajek</name></region><name sortKey="Hertel, Dietrich" sort="Hertel, Dietrich" uniqKey="Hertel D" first="Dietrich" last="Hertel">Dietrich Hertel</name><name sortKey="Leuschner, Christoph" sort="Leuschner, Christoph" uniqKey="Leuschner C" first="Christoph" last="Leuschner">Christoph Leuschner</name><name sortKey="Schuldt, Bernhard" sort="Schuldt, Bernhard" uniqKey="Schuldt B" first="Bernhard" last="Schuldt">Bernhard Schuldt</name></country><country name="France"><region name="Nouvelle-Aquitaine"><name sortKey="Delzon, Sylvain" sort="Delzon, Sylvain" uniqKey="Delzon S" first="Sylvain" last="Delzon">Sylvain Delzon</name></region></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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