G-fibres in storage roots of Trifolium pratense (Fabaceae): tensile stress generators for contraction.
Identifieur interne : 003256 ( Main/Exploration ); précédent : 003255; suivant : 003257G-fibres in storage roots of Trifolium pratense (Fabaceae): tensile stress generators for contraction.
Auteurs : Nicole Schreiber [Allemagne] ; Notburga Gierlinger ; Norbert Pütz ; Peter Fratzl ; Christoph Neinhuis ; Ingo BurgertSource :
- The Plant journal : for cell and molecular biology [ 1365-313X ] ; 2010.
Descripteurs français
- KwdFr :
- MESH :
- anatomie et histologie : Bois, Racines de plante, Trifolium.
- physiologie : Fibres de stress, Paroi cellulaire.
- Analyse spectrale Raman, Cellulose, Résistance à la traction.
English descriptors
- KwdEn :
- MESH :
- chemical : Cellulose.
- anatomy & histology : Plant Roots, Trifolium, Wood.
- physiology : Cell Wall, Stress Fibers.
- Spectrum Analysis, Raman, Tensile Strength.
Abstract
Root contraction has been described for many species within the plant kingdom for over a century, and many suggestions have been made for mechanisms behind these contractions. To move the foliage buds deeper into the soil, the proximal part of the storage root of Trifolium pratense contracts by up to 30%. Anatomical studies have shown undeformed fibres next to strongly deformed tissues. Raman imaging revealed that these fibres are chemically and structurally very similar to poplar (Populus) tension wood fibres, which are known to generate high tensile stresses and bend leaning stems or branches upright. Analogously, an almost pure cellulosic layer is laid down in the lumen of certain root fibres, on a thin lignified secondary cell wall layer. To reveal its stress generation capacities, the thick cellulosic layer, reminiscent of a gelatinous layer (G-layer) in tension wood, was selectively removed by enzymatic treatment. A substantial change in the dimensions of the isolated wood fibre bundles was observed. This high stress relaxation indicates the presence of high tensile stress for root contraction. These findings indicate a mechanism of root contraction in T. pratense (red clover) actuated via tension wood fibres, which follows the same principle known for poplar tension wood.
DOI: 10.1111/j.1365-313X.2009.04115.x
PubMed: 20030750
Affiliations:
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type="published">2010</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Cell Wall (physiology)</term><term>Cellulose (MeSH)</term><term>Plant Roots (anatomy & histology)</term><term>Spectrum Analysis, Raman (MeSH)</term><term>Stress Fibers (physiology)</term><term>Tensile Strength (MeSH)</term><term>Trifolium (anatomy & histology)</term><term>Wood (anatomy & histology)</term></keywords><keywords scheme="KwdFr" xml:lang="fr"><term>Analyse spectrale Raman (MeSH)</term><term>Bois (anatomie et histologie)</term><term>Cellulose (MeSH)</term><term>Fibres de stress (physiologie)</term><term>Paroi cellulaire (physiologie)</term><term>Racines de plante (anatomie et histologie)</term><term>Résistance à la traction (MeSH)</term><term>Trifolium (anatomie et histologie)</term></keywords><keywords scheme="MESH" type="chemical" xml:lang="en"><term>Cellulose</term></keywords><keywords scheme="MESH" qualifier="anatomie et histologie" xml:lang="fr"><term>Bois</term><term>Racines de plante</term><term>Trifolium</term></keywords><keywords scheme="MESH" qualifier="anatomy & histology" xml:lang="en"><term>Plant Roots</term><term>Trifolium</term><term>Wood</term></keywords><keywords scheme="MESH" qualifier="physiologie" xml:lang="fr"><term>Fibres de stress</term><term>Paroi cellulaire</term></keywords><keywords scheme="MESH" qualifier="physiology" xml:lang="en"><term>Cell Wall</term><term>Stress Fibers</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Spectrum Analysis, Raman</term><term>Tensile Strength</term></keywords><keywords scheme="MESH" xml:lang="fr"><term>Analyse spectrale Raman</term><term>Cellulose</term><term>Résistance à la traction</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Root contraction has been described for many species within the plant kingdom for over a century, and many suggestions have been made for mechanisms behind these contractions. To move the foliage buds deeper into the soil, the proximal part of the storage root of Trifolium pratense contracts by up to 30%. Anatomical studies have shown undeformed fibres next to strongly deformed tissues. Raman imaging revealed that these fibres are chemically and structurally very similar to poplar (Populus) tension wood fibres, which are known to generate high tensile stresses and bend leaning stems or branches upright. Analogously, an almost pure cellulosic layer is laid down in the lumen of certain root fibres, on a thin lignified secondary cell wall layer. To reveal its stress generation capacities, the thick cellulosic layer, reminiscent of a gelatinous layer (G-layer) in tension wood, was selectively removed by enzymatic treatment. A substantial change in the dimensions of the isolated wood fibre bundles was observed. This high stress relaxation indicates the presence of high tensile stress for root contraction. These findings indicate a mechanism of root contraction in T. pratense (red clover) actuated via tension wood fibres, which follows the same principle known for poplar tension wood.</div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">20030750</PMID><DateCompleted><Year>2010</Year><Month>07</Month><Day>16</Day></DateCompleted><DateRevised><Year>2010</Year><Month>04</Month><Day>22</Day></DateRevised><Article PubModel="Print-Electronic"><Journal><ISSN IssnType="Electronic">1365-313X</ISSN><JournalIssue CitedMedium="Internet"><Volume>61</Volume><Issue>5</Issue><PubDate><Year>2010</Year><Month>Mar</Month></PubDate></JournalIssue><Title>The Plant journal : for cell and molecular biology</Title><ISOAbbreviation>Plant J</ISOAbbreviation></Journal><ArticleTitle>G-fibres in storage roots of Trifolium pratense (Fabaceae): tensile stress generators for contraction.</ArticleTitle><Pagination><MedlinePgn>854-61</MedlinePgn></Pagination><ELocationID EIdType="doi" ValidYN="Y">10.1111/j.1365-313X.2009.04115.x</ELocationID><Abstract><AbstractText>Root contraction has been described for many species within the plant kingdom for over a century, and many suggestions have been made for mechanisms behind these contractions. To move the foliage buds deeper into the soil, the proximal part of the storage root of Trifolium pratense contracts by up to 30%. Anatomical studies have shown undeformed fibres next to strongly deformed tissues. Raman imaging revealed that these fibres are chemically and structurally very similar to poplar (Populus) tension wood fibres, which are known to generate high tensile stresses and bend leaning stems or branches upright. Analogously, an almost pure cellulosic layer is laid down in the lumen of certain root fibres, on a thin lignified secondary cell wall layer. To reveal its stress generation capacities, the thick cellulosic layer, reminiscent of a gelatinous layer (G-layer) in tension wood, was selectively removed by enzymatic treatment. A substantial change in the dimensions of the isolated wood fibre bundles was observed. This high stress relaxation indicates the presence of high tensile stress for root contraction. These findings indicate a mechanism of root contraction in T. pratense (red clover) actuated via tension wood fibres, which follows the same principle known for poplar tension wood.</AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Schreiber</LastName><ForeName>Nicole</ForeName><Initials>N</Initials><AffiliationInfo><Affiliation>Department of Biomaterials, Max-Planck-Institute of Colloids and Interfaces, Research Campus Golm, 14424 Potsdam, Germany. nicole.schreiber@mpikg.mpg.de</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Gierlinger</LastName><ForeName>Notburga</ForeName><Initials>N</Initials></Author><Author ValidYN="Y"><LastName>Pütz</LastName><ForeName>Norbert</ForeName><Initials>N</Initials></Author><Author ValidYN="Y"><LastName>Fratzl</LastName><ForeName>Peter</ForeName><Initials>P</Initials></Author><Author ValidYN="Y"><LastName>Neinhuis</LastName><ForeName>Christoph</ForeName><Initials>C</Initials></Author><Author ValidYN="Y"><LastName>Burgert</LastName><ForeName>Ingo</ForeName><Initials>I</Initials></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>2009</Year><Month>12</Month><Day>21</Day></ArticleDate></Article><MedlineJournalInfo><Country>England</Country><MedlineTA>Plant J</MedlineTA><NlmUniqueID>9207397</NlmUniqueID><ISSNLinking>0960-7412</ISSNLinking></MedlineJournalInfo><ChemicalList><Chemical><RegistryNumber>9004-34-6</RegistryNumber><NameOfSubstance UI="D002482">Cellulose</NameOfSubstance></Chemical></ChemicalList><CitationSubset>IM</CitationSubset><MeshHeadingList><MeshHeading><DescriptorName UI="D002473" MajorTopicYN="N">Cell Wall</DescriptorName><QualifierName UI="Q000502" MajorTopicYN="N">physiology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D002482" MajorTopicYN="N">Cellulose</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D018517" MajorTopicYN="N">Plant Roots</DescriptorName><QualifierName UI="Q000033" MajorTopicYN="Y">anatomy & histology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D013059" MajorTopicYN="N">Spectrum Analysis, Raman</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D022502" MajorTopicYN="N">Stress Fibers</DescriptorName><QualifierName UI="Q000502" MajorTopicYN="Y">physiology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D013718" MajorTopicYN="Y">Tensile Strength</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D029921" MajorTopicYN="N">Trifolium</DescriptorName><QualifierName UI="Q000033" MajorTopicYN="Y">anatomy & histology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D014934" MajorTopicYN="N">Wood</DescriptorName><QualifierName UI="Q000033" MajorTopicYN="N">anatomy & histology</QualifierName></MeshHeading></MeshHeadingList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="entrez"><Year>2009</Year><Month>12</Month><Day>25</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="pubmed"><Year>2009</Year><Month>12</Month><Day>25</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2010</Year><Month>7</Month><Day>17</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">20030750</ArticleId><ArticleId IdType="pii">TPJ4115</ArticleId><ArticleId IdType="doi">10.1111/j.1365-313X.2009.04115.x</ArticleId></ArticleIdList></PubmedData></pubmed><affiliations><list><country><li>Allemagne</li></country><region><li>Brandebourg</li></region><settlement><li>Potsdam</li></settlement></list><tree><noCountry><name sortKey="Burgert, Ingo" sort="Burgert, Ingo" uniqKey="Burgert I" first="Ingo" last="Burgert">Ingo Burgert</name><name sortKey="Fratzl, Peter" sort="Fratzl, Peter" uniqKey="Fratzl P" first="Peter" last="Fratzl">Peter Fratzl</name><name sortKey="Gierlinger, Notburga" sort="Gierlinger, Notburga" uniqKey="Gierlinger N" first="Notburga" last="Gierlinger">Notburga Gierlinger</name><name sortKey="Neinhuis, Christoph" sort="Neinhuis, Christoph" uniqKey="Neinhuis C" first="Christoph" last="Neinhuis">Christoph Neinhuis</name><name sortKey="Putz, Norbert" sort="Putz, Norbert" uniqKey="Putz N" first="Norbert" last="Pütz">Norbert Pütz</name></noCountry><country name="Allemagne"><region name="Brandebourg"><name sortKey="Schreiber, Nicole" sort="Schreiber, Nicole" uniqKey="Schreiber N" first="Nicole" last="Schreiber">Nicole Schreiber</name></region></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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