Auxin gradients are associated with polarity changes in trees.
Identifieur interne : 003855 ( Main/Curation ); précédent : 003854; suivant : 003856Auxin gradients are associated with polarity changes in trees.
Auteurs : Eric M. Kramer [Royaume-Uni] ; Michael Lewandowski ; Satvik Beri ; Jessica Bernard ; Matthew Borkowski ; Michael H. Borkowski ; Laura Ann Burchfield ; Brenda Mathisen ; Jennifer NormanlySource :
- Science (New York, N.Y.) [ 1095-9203 ] ; 2008.
Descripteurs français
- KwdFr :
- MESH :
- croissance et développement : Populus.
- cytologie : Bois, Méristème, Populus.
- métabolisme : Acides indolacétiques, Méristème, Populus.
- Modèles biologiques, Polarité de la cellule, Simulation numérique.
English descriptors
- KwdEn :
- MESH :
- chemical , metabolism : Indoleacetic Acids.
- cytology : Meristem, Populus, Wood.
- growth & development : Populus.
- metabolism : Meristem, Populus.
- Cell Polarity, Computer Simulation, Models, Biological.
Abstract
Models of plant growth and development propose that changes in cell polarity are mediated by gradients of the plant hormone auxin. With use of gas chromatography-mass spectrometry, we measured the redistribution of endogenous auxin in stems of quaking aspen trees (Populus tremuloides) after wounding. Persistent (lasting at least 24 hours) auxin gradients were observed in the region of the cambium where cell polarity was changing. A computer model of the auxin redistribution shows agreement with measured concentrations.
DOI: 10.1126/science.1156130
PubMed: 18566279
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pubmed:18566279Le document en format XML
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Kramer</name><affiliation wicri:level="1"><nlm:affiliation>Physics Department, Bard College at Simon'sRock, Great Barrington, MA 01230, USA and Centre for Plant Integrative Biology at the University of Nottingham, UK. ekramer@simons-rock.edu [corrected]</nlm:affiliation><country xml:lang="fr">Royaume-Uni</country><wicri:regionArea>Physics Department, Bard College at Simon'sRock, Great Barrington, MA 01230, USA and Centre for Plant Integrative Biology at the University of Nottingham</wicri:regionArea></affiliation></author><author><name sortKey="Lewandowski, Michael" sort="Lewandowski, Michael" uniqKey="Lewandowski M" first="Michael" last="Lewandowski">Michael Lewandowski</name></author><author><name sortKey="Beri, Satvik" sort="Beri, Satvik" uniqKey="Beri S" first="Satvik" last="Beri">Satvik Beri</name></author><author><name sortKey="Bernard, Jessica" sort="Bernard, Jessica" uniqKey="Bernard J" first="Jessica" last="Bernard">Jessica Bernard</name></author><author><name sortKey="Borkowski, Matthew" sort="Borkowski, Matthew" uniqKey="Borkowski M" first="Matthew" last="Borkowski">Matthew Borkowski</name></author><author><name sortKey="Borkowski, Michael H" sort="Borkowski, Michael H" uniqKey="Borkowski M" first="Michael H" last="Borkowski">Michael H. Borkowski</name></author><author><name sortKey="Burchfield, Laura Ann" sort="Burchfield, Laura Ann" uniqKey="Burchfield L" first="Laura Ann" last="Burchfield">Laura Ann Burchfield</name></author><author><name sortKey="Mathisen, Brenda" sort="Mathisen, Brenda" uniqKey="Mathisen B" first="Brenda" last="Mathisen">Brenda Mathisen</name></author><author><name sortKey="Normanly, Jennifer" sort="Normanly, Jennifer" uniqKey="Normanly J" first="Jennifer" last="Normanly">Jennifer Normanly</name></author></titleStmt><publicationStmt><idno type="wicri:source">PubMed</idno><date when="2008">2008</date><idno type="RBID">pubmed:18566279</idno><idno type="pmid">18566279</idno><idno type="doi">10.1126/science.1156130</idno><idno type="wicri:Area/Main/Corpus">003855</idno><idno type="wicri:explorRef" wicri:stream="Main" wicri:step="Corpus" wicri:corpus="PubMed">003855</idno><idno type="wicri:Area/Main/Curation">003855</idno><idno type="wicri:explorRef" wicri:stream="Main" wicri:step="Curation">003855</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en">Auxin gradients are associated with polarity changes in trees.</title><author><name sortKey="Kramer, Eric M" sort="Kramer, Eric M" uniqKey="Kramer E" first="Eric M" last="Kramer">Eric M. Kramer</name><affiliation wicri:level="1"><nlm:affiliation>Physics Department, Bard College at Simon'sRock, Great Barrington, MA 01230, USA and Centre for Plant Integrative Biology at the University of Nottingham, UK. ekramer@simons-rock.edu [corrected]</nlm:affiliation><country xml:lang="fr">Royaume-Uni</country><wicri:regionArea>Physics Department, Bard College at Simon'sRock, Great Barrington, MA 01230, USA and Centre for Plant Integrative Biology at the University of Nottingham</wicri:regionArea></affiliation></author><author><name sortKey="Lewandowski, Michael" sort="Lewandowski, Michael" uniqKey="Lewandowski M" first="Michael" last="Lewandowski">Michael Lewandowski</name></author><author><name sortKey="Beri, Satvik" sort="Beri, Satvik" uniqKey="Beri S" first="Satvik" last="Beri">Satvik Beri</name></author><author><name sortKey="Bernard, Jessica" sort="Bernard, Jessica" uniqKey="Bernard J" first="Jessica" last="Bernard">Jessica Bernard</name></author><author><name sortKey="Borkowski, Matthew" sort="Borkowski, Matthew" uniqKey="Borkowski M" first="Matthew" last="Borkowski">Matthew Borkowski</name></author><author><name sortKey="Borkowski, Michael H" sort="Borkowski, Michael H" uniqKey="Borkowski M" first="Michael H" last="Borkowski">Michael H. Borkowski</name></author><author><name sortKey="Burchfield, Laura Ann" sort="Burchfield, Laura Ann" uniqKey="Burchfield L" first="Laura Ann" last="Burchfield">Laura Ann Burchfield</name></author><author><name sortKey="Mathisen, Brenda" sort="Mathisen, Brenda" uniqKey="Mathisen B" first="Brenda" last="Mathisen">Brenda Mathisen</name></author><author><name sortKey="Normanly, Jennifer" sort="Normanly, Jennifer" uniqKey="Normanly J" first="Jennifer" last="Normanly">Jennifer Normanly</name></author></analytic><series><title level="j">Science (New York, N.Y.)</title><idno type="eISSN">1095-9203</idno><imprint><date when="2008" type="published">2008</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Cell Polarity (MeSH)</term><term>Computer Simulation (MeSH)</term><term>Indoleacetic Acids (metabolism)</term><term>Meristem (cytology)</term><term>Meristem (metabolism)</term><term>Models, Biological (MeSH)</term><term>Populus (cytology)</term><term>Populus (growth & development)</term><term>Populus (metabolism)</term><term>Wood (cytology)</term></keywords><keywords scheme="KwdFr" xml:lang="fr"><term>Acides indolacétiques (métabolisme)</term><term>Bois (cytologie)</term><term>Modèles biologiques (MeSH)</term><term>Méristème (cytologie)</term><term>Méristème (métabolisme)</term><term>Polarité de la cellule (MeSH)</term><term>Populus (croissance et développement)</term><term>Populus (cytologie)</term><term>Populus (métabolisme)</term><term>Simulation numérique (MeSH)</term></keywords><keywords scheme="MESH" type="chemical" qualifier="metabolism" xml:lang="en"><term>Indoleacetic Acids</term></keywords><keywords scheme="MESH" qualifier="croissance et développement" xml:lang="fr"><term>Populus</term></keywords><keywords scheme="MESH" qualifier="cytologie" xml:lang="fr"><term>Bois</term><term>Méristème</term><term>Populus</term></keywords><keywords scheme="MESH" qualifier="cytology" xml:lang="en"><term>Meristem</term><term>Populus</term><term>Wood</term></keywords><keywords scheme="MESH" qualifier="growth & development" xml:lang="en"><term>Populus</term></keywords><keywords scheme="MESH" qualifier="metabolism" xml:lang="en"><term>Meristem</term><term>Populus</term></keywords><keywords scheme="MESH" qualifier="métabolisme" xml:lang="fr"><term>Acides indolacétiques</term><term>Méristème</term><term>Populus</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Cell Polarity</term><term>Computer Simulation</term><term>Models, Biological</term></keywords><keywords scheme="MESH" xml:lang="fr"><term>Modèles biologiques</term><term>Polarité de la cellule</term><term>Simulation numérique</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Models of plant growth and development propose that changes in cell polarity are mediated by gradients of the plant hormone auxin. With use of gas chromatography-mass spectrometry, we measured the redistribution of endogenous auxin in stems of quaking aspen trees (Populus tremuloides) after wounding. Persistent (lasting at least 24 hours) auxin gradients were observed in the region of the cambium where cell polarity was changing. A computer model of the auxin redistribution shows agreement with measured concentrations.</div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">18566279</PMID><DateCompleted><Year>2008</Year><Month>07</Month><Day>03</Day></DateCompleted><DateRevised><Year>2008</Year><Month>09</Month><Day>26</Day></DateRevised><Article PubModel="Print"><Journal><ISSN IssnType="Electronic">1095-9203</ISSN><JournalIssue CitedMedium="Internet"><Volume>320</Volume><Issue>5883</Issue><PubDate><Year>2008</Year><Month>Jun</Month><Day>20</Day></PubDate></JournalIssue><Title>Science (New York, N.Y.)</Title><ISOAbbreviation>Science</ISOAbbreviation></Journal><ArticleTitle>Auxin gradients are associated with polarity changes in trees.</ArticleTitle><Pagination><MedlinePgn>1610</MedlinePgn></Pagination><ELocationID EIdType="doi" ValidYN="Y">10.1126/science.1156130</ELocationID><Abstract><AbstractText>Models of plant growth and development propose that changes in cell polarity are mediated by gradients of the plant hormone auxin. With use of gas chromatography-mass spectrometry, we measured the redistribution of endogenous auxin in stems of quaking aspen trees (Populus tremuloides) after wounding. Persistent (lasting at least 24 hours) auxin gradients were observed in the region of the cambium where cell polarity was changing. A computer model of the auxin redistribution shows agreement with measured concentrations.</AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Kramer</LastName><ForeName>Eric M</ForeName><Initials>EM</Initials><AffiliationInfo><Affiliation>Physics Department, Bard College at Simon'sRock, Great Barrington, MA 01230, USA and Centre for Plant Integrative Biology at the University of Nottingham, UK. ekramer@simons-rock.edu [corrected]</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Lewandowski</LastName><ForeName>Michael</ForeName><Initials>M</Initials></Author><Author ValidYN="Y"><LastName>Beri</LastName><ForeName>Satvik</ForeName><Initials>S</Initials></Author><Author ValidYN="Y"><LastName>Bernard</LastName><ForeName>Jessica</ForeName><Initials>J</Initials></Author><Author ValidYN="Y"><LastName>Borkowski</LastName><ForeName>Matthew</ForeName><Initials>M</Initials></Author><Author ValidYN="Y"><LastName>Borkowski</LastName><ForeName>Michael H</ForeName><Initials>MH</Initials></Author><Author ValidYN="Y"><LastName>Burchfield</LastName><ForeName>Laura Ann</ForeName><Initials>LA</Initials></Author><Author ValidYN="Y"><LastName>Mathisen</LastName><ForeName>Brenda</ForeName><Initials>B</Initials></Author><Author ValidYN="Y"><LastName>Normanly</LastName><ForeName>Jennifer</ForeName><Initials>J</Initials></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></PublicationTypeList></Article><MedlineJournalInfo><Country>United States</Country><MedlineTA>Science</MedlineTA><NlmUniqueID>0404511</NlmUniqueID><ISSNLinking>0036-8075</ISSNLinking></MedlineJournalInfo><ChemicalList><Chemical><RegistryNumber>0</RegistryNumber><NameOfSubstance UI="D007210">Indoleacetic Acids</NameOfSubstance></Chemical></ChemicalList><CitationSubset>IM</CitationSubset><CommentsCorrectionsList><CommentsCorrections RefType="ErratumIn"><RefSource>Science. 2008 Sep 12;321(5895):1446</RefSource></CommentsCorrections></CommentsCorrectionsList><MeshHeadingList><MeshHeading><DescriptorName UI="D016764" MajorTopicYN="Y">Cell Polarity</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D003198" MajorTopicYN="N">Computer Simulation</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D007210" MajorTopicYN="N">Indoleacetic Acids</DescriptorName><QualifierName UI="Q000378" MajorTopicYN="Y">metabolism</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D018519" MajorTopicYN="N">Meristem</DescriptorName><QualifierName UI="Q000166" MajorTopicYN="N">cytology</QualifierName><QualifierName UI="Q000378" MajorTopicYN="Y">metabolism</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D008954" MajorTopicYN="N">Models, Biological</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D032107" MajorTopicYN="N">Populus</DescriptorName><QualifierName UI="Q000166" MajorTopicYN="Y">cytology</QualifierName><QualifierName UI="Q000254" MajorTopicYN="N">growth & development</QualifierName><QualifierName UI="Q000378" MajorTopicYN="Y">metabolism</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D014934" MajorTopicYN="N">Wood</DescriptorName><QualifierName UI="Q000166" MajorTopicYN="Y">cytology</QualifierName></MeshHeading></MeshHeadingList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="pubmed"><Year>2008</Year><Month>6</Month><Day>21</Day><Hour>9</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2008</Year><Month>7</Month><Day>4</Day><Hour>9</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>2008</Year><Month>6</Month><Day>21</Day><Hour>9</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">18566279</ArticleId><ArticleId IdType="pii">320/5883/1610</ArticleId><ArticleId IdType="doi">10.1126/science.1156130</ArticleId></ArticleIdList></PubmedData></pubmed></record>Pour manipuler ce document sous Unix (Dilib)
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