Phloem networks in leaves.
Identifieur interne : 000D46 ( Main/Exploration ); précédent : 000D45; suivant : 000D47Phloem networks in leaves.
Auteurs : M Nica R. Carvalho [Panama] ; Juan M. Losada [États-Unis] ; Karl J. Niklas [États-Unis]Source :
- Current opinion in plant biology [ 1879-0356 ] ; 2018.
Descripteurs français
- KwdFr :
- Feuilles de plante (anatomie et histologie), Feuilles de plante (métabolisme), Ginkgo biloba (anatomie et histologie), Ginkgo biloba (métabolisme), Phloème (anatomie et histologie), Phloème (métabolisme), Photosynthèse (MeSH), Plantes (anatomie et histologie), Plantes (métabolisme), Populus (anatomie et histologie), Populus (métabolisme), Tiges de plante (anatomie et histologie), Tiges de plante (métabolisme), Transport biologique (MeSH), Xylème (anatomie et histologie), Xylème (métabolisme).
- MESH :
- anatomie et histologie : Feuilles de plante, Ginkgo biloba, Phloème, Plantes, Populus, Tiges de plante, Xylème.
- métabolisme : Feuilles de plante, Ginkgo biloba, Phloème, Plantes, Populus, Tiges de plante, Xylème.
- Photosynthèse, Transport biologique.
English descriptors
- KwdEn :
- Biological Transport (MeSH), Ginkgo biloba (anatomy & histology), Ginkgo biloba (metabolism), Phloem (anatomy & histology), Phloem (metabolism), Photosynthesis (MeSH), Plant Leaves (anatomy & histology), Plant Leaves (metabolism), Plant Stems (anatomy & histology), Plant Stems (metabolism), Plants (anatomy & histology), Plants (metabolism), Populus (anatomy & histology), Populus (metabolism), Xylem (anatomy & histology), Xylem (metabolism).
- MESH :
- anatomy & histology : Ginkgo biloba, Phloem, Plant Leaves, Plant Stems, Plants, Populus, Xylem.
- metabolism : Ginkgo biloba, Phloem, Plant Leaves, Plant Stems, Plants, Populus, Xylem.
- Biological Transport, Photosynthesis.
Abstract
The survival of all vascular plants depends on phloem and xylem, which comprise a hydraulically coupled tissue system that transports photosynthates, water, and a variety of other molecules and ions. Although xylem hydraulics has been extensively studied, until recently, comparatively little is known quantitatively about the phloem hydraulic network and how it is functionally coupled to the xylem network, particularly in photosynthetic leaves. Here, we summarize recent advances in quantifying phloem hydraulics in fully expanded mature leaves with different vascular architectures and show that (1) the size of phloem conducting cells across phylogenetically different taxa scales isometrically with respect to xylem conducting cell size, (2) cell transport areas and lengths increase along phloem transport pathways in a manner that can be used to model Münch's pressure-flow hypothesis, and (3) report observations that invalidate da Vinci's and Murray's hydraulic models as plausible constructs for understanding photosynthate transport in the leaf lamina.
DOI: 10.1016/j.pbi.2017.12.007
PubMed: 29306742
Affiliations:
- Panama, États-Unis
- Massachusetts, État de New York
- Cambridge (Massachusetts), Ithaca (New York)
- Université Cornell, Université Harvard
Links toward previous steps (curation, corpus...)
Le document en format XML
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Carvalho</name><affiliation wicri:level="4"><nlm:affiliation>Plant Biology Section, School of Integrative Plant Science, Cornell University, Ithaca, NY 14853, USA; Smithsonian Tropical Research Institute, Box 0843-03092, Balboa, Ancón, Panama.</nlm:affiliation><country xml:lang="fr">Panama</country><wicri:regionArea>Plant Biology Section, School of Integrative Plant Science, Cornell University, Ithaca, NY 14853, USA; Smithsonian Tropical Research Institute, Box 0843-03092, Balboa, Ancón</wicri:regionArea><orgName type="university">Université Cornell</orgName><placeName><settlement type="city">Ithaca (New York)</settlement><region type="state">État de New York</region></placeName></affiliation></author><author><name sortKey="Losada, Juan M" sort="Losada, Juan M" uniqKey="Losada J" first="Juan M" last="Losada">Juan M. Losada</name><affiliation wicri:level="4"><nlm:affiliation>Arnold Arboretum, Harvard University, 1300 Centre St., Boston, MA 02131, USA.</nlm:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>Arnold Arboretum, Harvard University, 1300 Centre St., Boston, MA 02131</wicri:regionArea><placeName><region type="state">Massachusetts</region><settlement type="city">Cambridge (Massachusetts)</settlement></placeName><orgName type="university">Université Harvard</orgName></affiliation></author><author><name sortKey="Niklas, Karl J" sort="Niklas, Karl J" uniqKey="Niklas K" first="Karl J" last="Niklas">Karl J. Niklas</name><affiliation wicri:level="4"><nlm:affiliation>Plant Biology Section, School of Integrative Plant Science, Cornell University, Ithaca, NY 14853, USA. Electronic address: kjn2@cornell.edu.</nlm:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>Plant Biology Section, School of Integrative Plant Science, Cornell University, Ithaca, NY 14853</wicri:regionArea><placeName><region type="state">État de New York</region><settlement type="city">Ithaca (New York)</settlement></placeName><orgName type="university">Université Cornell</orgName></affiliation></author></analytic><series><title level="j">Current opinion in plant biology</title><idno type="eISSN">1879-0356</idno><imprint><date when="2018" type="published">2018</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Biological Transport (MeSH)</term><term>Ginkgo biloba (anatomy & histology)</term><term>Ginkgo biloba (metabolism)</term><term>Phloem (anatomy & histology)</term><term>Phloem (metabolism)</term><term>Photosynthesis (MeSH)</term><term>Plant Leaves (anatomy & histology)</term><term>Plant Leaves (metabolism)</term><term>Plant Stems (anatomy & histology)</term><term>Plant Stems (metabolism)</term><term>Plants (anatomy & histology)</term><term>Plants (metabolism)</term><term>Populus (anatomy & histology)</term><term>Populus (metabolism)</term><term>Xylem (anatomy & histology)</term><term>Xylem (metabolism)</term></keywords><keywords scheme="KwdFr" xml:lang="fr"><term>Feuilles de plante (anatomie et histologie)</term><term>Feuilles de plante (métabolisme)</term><term>Ginkgo biloba (anatomie et histologie)</term><term>Ginkgo biloba (métabolisme)</term><term>Phloème (anatomie et histologie)</term><term>Phloème (métabolisme)</term><term>Photosynthèse (MeSH)</term><term>Plantes (anatomie et histologie)</term><term>Plantes (métabolisme)</term><term>Populus (anatomie et histologie)</term><term>Populus (métabolisme)</term><term>Tiges de plante (anatomie et histologie)</term><term>Tiges de plante (métabolisme)</term><term>Transport biologique (MeSH)</term><term>Xylème (anatomie et histologie)</term><term>Xylème (métabolisme)</term></keywords><keywords scheme="MESH" qualifier="anatomie et histologie" xml:lang="fr"><term>Feuilles de plante</term><term>Ginkgo biloba</term><term>Phloème</term><term>Plantes</term><term>Populus</term><term>Tiges de plante</term><term>Xylème</term></keywords><keywords scheme="MESH" qualifier="anatomy & histology" xml:lang="en"><term>Ginkgo biloba</term><term>Phloem</term><term>Plant Leaves</term><term>Plant Stems</term><term>Plants</term><term>Populus</term><term>Xylem</term></keywords><keywords scheme="MESH" qualifier="metabolism" xml:lang="en"><term>Ginkgo biloba</term><term>Phloem</term><term>Plant Leaves</term><term>Plant Stems</term><term>Plants</term><term>Populus</term><term>Xylem</term></keywords><keywords scheme="MESH" qualifier="métabolisme" xml:lang="fr"><term>Feuilles de plante</term><term>Ginkgo biloba</term><term>Phloème</term><term>Plantes</term><term>Populus</term><term>Tiges de plante</term><term>Xylème</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Biological Transport</term><term>Photosynthesis</term></keywords><keywords scheme="MESH" xml:lang="fr"><term>Photosynthèse</term><term>Transport biologique</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">The survival of all vascular plants depends on phloem and xylem, which comprise a hydraulically coupled tissue system that transports photosynthates, water, and a variety of other molecules and ions. Although xylem hydraulics has been extensively studied, until recently, comparatively little is known quantitatively about the phloem hydraulic network and how it is functionally coupled to the xylem network, particularly in photosynthetic leaves. Here, we summarize recent advances in quantifying phloem hydraulics in fully expanded mature leaves with different vascular architectures and show that (1) the size of phloem conducting cells across phylogenetically different taxa scales isometrically with respect to xylem conducting cell size, (2) cell transport areas and lengths increase along phloem transport pathways in a manner that can be used to model Münch's pressure-flow hypothesis, and (3) report observations that invalidate da Vinci's and Murray's hydraulic models as plausible constructs for understanding photosynthate transport in the leaf lamina.</div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">29306742</PMID><DateCompleted><Year>2018</Year><Month>11</Month><Day>19</Day></DateCompleted><DateRevised><Year>2018</Year><Month>11</Month><Day>19</Day></DateRevised><Article PubModel="Print-Electronic"><Journal><ISSN IssnType="Electronic">1879-0356</ISSN><JournalIssue CitedMedium="Internet"><Volume>43</Volume><PubDate><Year>2018</Year><Month>06</Month></PubDate></JournalIssue><Title>Current opinion in plant biology</Title><ISOAbbreviation>Curr Opin Plant Biol</ISOAbbreviation></Journal><ArticleTitle>Phloem networks in leaves.</ArticleTitle><Pagination><MedlinePgn>29-35</MedlinePgn></Pagination><ELocationID EIdType="pii" ValidYN="Y">S1369-5266(17)30140-1</ELocationID><ELocationID EIdType="doi" ValidYN="Y">10.1016/j.pbi.2017.12.007</ELocationID><Abstract><AbstractText>The survival of all vascular plants depends on phloem and xylem, which comprise a hydraulically coupled tissue system that transports photosynthates, water, and a variety of other molecules and ions. Although xylem hydraulics has been extensively studied, until recently, comparatively little is known quantitatively about the phloem hydraulic network and how it is functionally coupled to the xylem network, particularly in photosynthetic leaves. Here, we summarize recent advances in quantifying phloem hydraulics in fully expanded mature leaves with different vascular architectures and show that (1) the size of phloem conducting cells across phylogenetically different taxa scales isometrically with respect to xylem conducting cell size, (2) cell transport areas and lengths increase along phloem transport pathways in a manner that can be used to model Münch's pressure-flow hypothesis, and (3) report observations that invalidate da Vinci's and Murray's hydraulic models as plausible constructs for understanding photosynthate transport in the leaf lamina.</AbstractText><CopyrightInformation>Copyright © 2017 Elsevier Ltd. All rights reserved.</CopyrightInformation></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Carvalho</LastName><ForeName>Mónica R</ForeName><Initials>MR</Initials><AffiliationInfo><Affiliation>Plant Biology Section, School of Integrative Plant Science, Cornell University, Ithaca, NY 14853, USA; Smithsonian Tropical Research Institute, Box 0843-03092, Balboa, Ancón, Panama.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Losada</LastName><ForeName>Juan M</ForeName><Initials>JM</Initials><AffiliationInfo><Affiliation>Arnold Arboretum, Harvard University, 1300 Centre St., Boston, MA 02131, USA.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Niklas</LastName><ForeName>Karl J</ForeName><Initials>KJ</Initials><AffiliationInfo><Affiliation>Plant Biology Section, School of Integrative Plant Science, Cornell University, Ithaca, NY 14853, USA. Electronic address: kjn2@cornell.edu.</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><PublicationType UI="D013486">Research Support, U.S. Gov't, Non-P.H.S.</PublicationType><PublicationType UI="D016454">Review</PublicationType></PublicationTypeList><ArticleDate DateType="Electronic"><Year>2018</Year><Month>01</Month><Day>04</Day></ArticleDate></Article><MedlineJournalInfo><Country>England</Country><MedlineTA>Curr Opin Plant Biol</MedlineTA><NlmUniqueID>100883395</NlmUniqueID><ISSNLinking>1369-5266</ISSNLinking></MedlineJournalInfo><CitationSubset>IM</CitationSubset><MeshHeadingList><MeshHeading><DescriptorName UI="D001692" MajorTopicYN="N">Biological Transport</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D020441" MajorTopicYN="N">Ginkgo biloba</DescriptorName><QualifierName UI="Q000033" MajorTopicYN="N">anatomy & histology</QualifierName><QualifierName UI="Q000378" MajorTopicYN="N">metabolism</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D052585" MajorTopicYN="N">Phloem</DescriptorName><QualifierName UI="Q000033" MajorTopicYN="N">anatomy & histology</QualifierName><QualifierName UI="Q000378" MajorTopicYN="Y">metabolism</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D010788" MajorTopicYN="N">Photosynthesis</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D018515" MajorTopicYN="N">Plant Leaves</DescriptorName><QualifierName UI="Q000033" MajorTopicYN="N">anatomy & histology</QualifierName><QualifierName UI="Q000378" MajorTopicYN="N">metabolism</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D018547" MajorTopicYN="N">Plant Stems</DescriptorName><QualifierName UI="Q000033" MajorTopicYN="N">anatomy & histology</QualifierName><QualifierName UI="Q000378" MajorTopicYN="N">metabolism</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D010944" MajorTopicYN="N">Plants</DescriptorName><QualifierName UI="Q000033" MajorTopicYN="Y">anatomy & histology</QualifierName><QualifierName UI="Q000378" MajorTopicYN="N">metabolism</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D032107" MajorTopicYN="N">Populus</DescriptorName><QualifierName UI="Q000033" MajorTopicYN="N">anatomy & histology</QualifierName><QualifierName UI="Q000378" MajorTopicYN="N">metabolism</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D052584" MajorTopicYN="N">Xylem</DescriptorName><QualifierName UI="Q000033" MajorTopicYN="N">anatomy & histology</QualifierName><QualifierName UI="Q000378" MajorTopicYN="N">metabolism</QualifierName></MeshHeading></MeshHeadingList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="received"><Year>2017</Year><Month>09</Month><Day>19</Day></PubMedPubDate><PubMedPubDate PubStatus="revised"><Year>2017</Year><Month>12</Month><Day>04</Day></PubMedPubDate><PubMedPubDate PubStatus="accepted"><Year>2017</Year><Month>12</Month><Day>16</Day></PubMedPubDate><PubMedPubDate PubStatus="pubmed"><Year>2018</Year><Month>1</Month><Day>8</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2018</Year><Month>11</Month><Day>20</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>2018</Year><Month>1</Month><Day>8</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">29306742</ArticleId><ArticleId IdType="pii">S1369-5266(17)30140-1</ArticleId><ArticleId IdType="doi">10.1016/j.pbi.2017.12.007</ArticleId></ArticleIdList></PubmedData></pubmed><affiliations><list><country><li>Panama</li><li>États-Unis</li></country><region><li>Massachusetts</li><li>État de New York</li></region><settlement><li>Cambridge (Massachusetts)</li><li>Ithaca (New York)</li></settlement><orgName><li>Université Cornell</li><li>Université Harvard</li></orgName></list><tree><country name="Panama"><region name="État de New York"><name sortKey="Carvalho, M Nica R" sort="Carvalho, M Nica R" uniqKey="Carvalho M" first="M Nica R" last="Carvalho">M Nica R. Carvalho</name></region></country><country name="États-Unis"><region name="Massachusetts"><name sortKey="Losada, Juan M" sort="Losada, Juan M" uniqKey="Losada J" first="Juan M" last="Losada">Juan M. Losada</name></region><name sortKey="Niklas, Karl J" sort="Niklas, Karl J" uniqKey="Niklas K" first="Karl J" last="Niklas">Karl J. Niklas</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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