3D deformation field in growing plant roots reveals both mechanical and biological responses to axial mechanical forces.
Identifieur interne : 001A35 ( Main/Exploration ); précédent : 001A34; suivant : 001A363D deformation field in growing plant roots reveals both mechanical and biological responses to axial mechanical forces.
Auteurs : François Bizet [France] ; A Glyn Bengough [Royaume-Uni] ; Irène Hummel [France] ; Marie-Béatrice Bogeat-Triboulot [Royaume-Uni] ; Lionel X. Dupuy [Royaume-Uni]Source :
- Journal of experimental botany [ 1460-2431 ] ; 2016.
Descripteurs français
- KwdFr :
- MESH :
- croissance et développement : Populus, Racines de plante.
- méthodes : Imagerie accélérée, Imagerie tridimensionnelle.
- physiologie : Racines de plante.
- Contrainte mécanique, Modèles biologiques, Phénomènes biomécaniques.
English descriptors
- KwdEn :
- MESH :
- growth & development : Plant Roots, Populus.
- methods : Imaging, Three-Dimensional, Time-Lapse Imaging.
- physiology : Plant Roots.
- Biomechanical Phenomena, Models, Biological, Stress, Mechanical.
Abstract
Strong regions and physical barriers in soils may slow root elongation, leading to reduced water and nutrient uptake and decreased yield. In this study, the biomechanical responses of roots to axial mechanical forces were assessed by combining 3D live imaging, kinematics and a novel mechanical sensor. This system quantified Young's elastic modulus of intact poplar roots (32MPa), a rapid <0.2 mN touch-elongation sensitivity, and the critical elongation force applied by growing roots that resulted in bending. Kinematic analysis revealed a multiphase bio-mechanical response of elongation rate and curvature in 3D. Measured critical elongation force was accurately predicted from an Euler buckling model, indicating that no biologically mediated accommodation to mechanical forces influenced bending during this short period of time. Force applied by growing roots increased more than 15-fold when buckling was prevented by lateral bracing of the root. The junction between the growing and the mature zones was identified as a zone of mechanical weakness that seemed critical to the bending process. This work identified key limiting factors for root growth and buckling under mechanical constraints. The findings are relevant to crop and soil sciences, and advance our understanding of root growth in heterogeneous structured soils.
DOI: 10.1093/jxb/erw320
PubMed: 27664958
PubMed Central: PMC5066484
Affiliations:
Links toward previous steps (curation, corpus...)
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Dupuy</name><affiliation wicri:level="1"><nlm:affiliation>James Hutton Institute, Ecological Sciences group, Dundee DD2 5DA, UK.</nlm:affiliation><country xml:lang="fr">Royaume-Uni</country><wicri:regionArea>James Hutton Institute, Ecological Sciences group, Dundee DD2 5DA</wicri:regionArea><wicri:noRegion>Dundee DD2 5DA</wicri:noRegion></affiliation></author></analytic><series><title level="j">Journal of experimental botany</title><idno type="eISSN">1460-2431</idno><imprint><date when="2016" type="published">2016</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Biomechanical Phenomena (MeSH)</term><term>Imaging, Three-Dimensional (methods)</term><term>Models, Biological (MeSH)</term><term>Plant Roots (growth & development)</term><term>Plant Roots (physiology)</term><term>Populus (growth & development)</term><term>Stress, Mechanical (MeSH)</term><term>Time-Lapse Imaging (methods)</term></keywords><keywords scheme="KwdFr" xml:lang="fr"><term>Contrainte mécanique (MeSH)</term><term>Imagerie accélérée (méthodes)</term><term>Imagerie tridimensionnelle (méthodes)</term><term>Modèles biologiques (MeSH)</term><term>Phénomènes biomécaniques (MeSH)</term><term>Populus (croissance et développement)</term><term>Racines de plante (croissance et développement)</term><term>Racines de plante (physiologie)</term></keywords><keywords scheme="MESH" qualifier="croissance et développement" xml:lang="fr"><term>Populus</term><term>Racines de plante</term></keywords><keywords scheme="MESH" qualifier="growth & development" xml:lang="en"><term>Plant Roots</term><term>Populus</term></keywords><keywords scheme="MESH" qualifier="methods" xml:lang="en"><term>Imaging, Three-Dimensional</term><term>Time-Lapse Imaging</term></keywords><keywords scheme="MESH" qualifier="méthodes" xml:lang="fr"><term>Imagerie accélérée</term><term>Imagerie tridimensionnelle</term></keywords><keywords scheme="MESH" qualifier="physiologie" xml:lang="fr"><term>Racines de plante</term></keywords><keywords scheme="MESH" qualifier="physiology" xml:lang="en"><term>Plant Roots</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Biomechanical Phenomena</term><term>Models, Biological</term><term>Stress, Mechanical</term></keywords><keywords scheme="MESH" xml:lang="fr"><term>Contrainte mécanique</term><term>Modèles biologiques</term><term>Phénomènes biomécaniques</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Strong regions and physical barriers in soils may slow root elongation, leading to reduced water and nutrient uptake and decreased yield. In this study, the biomechanical responses of roots to axial mechanical forces were assessed by combining 3D live imaging, kinematics and a novel mechanical sensor. This system quantified Young's elastic modulus of intact poplar roots (32MPa), a rapid <0.2 mN touch-elongation sensitivity, and the critical elongation force applied by growing roots that resulted in bending. Kinematic analysis revealed a multiphase bio-mechanical response of elongation rate and curvature in 3D. Measured critical elongation force was accurately predicted from an Euler buckling model, indicating that no biologically mediated accommodation to mechanical forces influenced bending during this short period of time. Force applied by growing roots increased more than 15-fold when buckling was prevented by lateral bracing of the root. The junction between the growing and the mature zones was identified as a zone of mechanical weakness that seemed critical to the bending process. This work identified key limiting factors for root growth and buckling under mechanical constraints. The findings are relevant to crop and soil sciences, and advance our understanding of root growth in heterogeneous structured soils.</div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">27664958</PMID><DateCompleted><Year>2017</Year><Month>11</Month><Day>20</Day></DateCompleted><DateRevised><Year>2018</Year><Month>11</Month><Day>13</Day></DateRevised><Article PubModel="Print-Electronic"><Journal><ISSN IssnType="Electronic">1460-2431</ISSN><JournalIssue CitedMedium="Internet"><Volume>67</Volume><Issue>19</Issue><PubDate><Year>2016</Year><Month>10</Month></PubDate></JournalIssue><Title>Journal of experimental botany</Title><ISOAbbreviation>J Exp Bot</ISOAbbreviation></Journal><ArticleTitle>3D deformation field in growing plant roots reveals both mechanical and biological responses to axial mechanical forces.</ArticleTitle><Pagination><MedlinePgn>5605-5614</MedlinePgn></Pagination><Abstract><AbstractText>Strong regions and physical barriers in soils may slow root elongation, leading to reduced water and nutrient uptake and decreased yield. In this study, the biomechanical responses of roots to axial mechanical forces were assessed by combining 3D live imaging, kinematics and a novel mechanical sensor. This system quantified Young's elastic modulus of intact poplar roots (32MPa), a rapid <0.2 mN touch-elongation sensitivity, and the critical elongation force applied by growing roots that resulted in bending. Kinematic analysis revealed a multiphase bio-mechanical response of elongation rate and curvature in 3D. Measured critical elongation force was accurately predicted from an Euler buckling model, indicating that no biologically mediated accommodation to mechanical forces influenced bending during this short period of time. Force applied by growing roots increased more than 15-fold when buckling was prevented by lateral bracing of the root. The junction between the growing and the mature zones was identified as a zone of mechanical weakness that seemed critical to the bending process. This work identified key limiting factors for root growth and buckling under mechanical constraints. The findings are relevant to crop and soil sciences, and advance our understanding of root growth in heterogeneous structured soils.</AbstractText><CopyrightInformation>© The Author 2016. Published by Oxford University Press on behalf of the Society for Experimental Biology.</CopyrightInformation></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Bizet</LastName><ForeName>François</ForeName><Initials>F</Initials><AffiliationInfo><Affiliation>UMR EEF, INRA, Université de Lorraine, 54280 Champenoux, France.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Bengough</LastName><ForeName>A Glyn</ForeName><Initials>AG</Initials><AffiliationInfo><Affiliation>James Hutton Institute, Ecological Sciences group, Dundee DD2 5DA, UK School of Science and Engineering, University of Dundee, Dundee DD1 4HN, UK glyn.bengough@hutton.ac.uk triboulo@nancy.inra.fr.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Hummel</LastName><ForeName>Irène</ForeName><Initials>I</Initials><AffiliationInfo><Affiliation>UMR EEF, INRA, Université de Lorraine, 54280 Champenoux, France.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Bogeat-Triboulot</LastName><ForeName>Marie-Béatrice</ForeName><Initials>MB</Initials><AffiliationInfo><Affiliation>UMR EEF, INRA, Université de Lorraine, 54280 Champenoux, France glyn.bengough@hutton.ac.uk triboulo@nancy.inra.fr.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Dupuy</LastName><ForeName>Lionel X</ForeName><Initials>LX</Initials><AffiliationInfo><Affiliation>James Hutton Institute, Ecological Sciences group, Dundee DD2 5DA, UK.</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>2016</Year><Month>09</Month><Day>24</Day></ArticleDate></Article><MedlineJournalInfo><Country>England</Country><MedlineTA>J Exp Bot</MedlineTA><NlmUniqueID>9882906</NlmUniqueID><ISSNLinking>0022-0957</ISSNLinking></MedlineJournalInfo><CitationSubset>IM</CitationSubset><MeshHeadingList><MeshHeading><DescriptorName UI="D001696" MajorTopicYN="N">Biomechanical Phenomena</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D021621" MajorTopicYN="N">Imaging, Three-Dimensional</DescriptorName><QualifierName UI="Q000379" MajorTopicYN="N">methods</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D008954" MajorTopicYN="N">Models, Biological</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D018517" MajorTopicYN="N">Plant Roots</DescriptorName><QualifierName UI="Q000254" MajorTopicYN="Y">growth & development</QualifierName><QualifierName UI="Q000502" MajorTopicYN="N">physiology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D032107" MajorTopicYN="N">Populus</DescriptorName><QualifierName UI="Q000254" MajorTopicYN="N">growth & development</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D013314" MajorTopicYN="N">Stress, Mechanical</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D059008" MajorTopicYN="N">Time-Lapse Imaging</DescriptorName><QualifierName UI="Q000379" MajorTopicYN="N">methods</QualifierName></MeshHeading></MeshHeadingList><KeywordList Owner="NOTNLM"><Keyword MajorTopicYN="Y">3D imaging</Keyword><Keyword MajorTopicYN="Y">Young’s elastic modulus.</Keyword><Keyword MajorTopicYN="Y">biomechanics</Keyword><Keyword MajorTopicYN="Y">buckling</Keyword><Keyword MajorTopicYN="Y">kinematics</Keyword><Keyword MajorTopicYN="Y">root growth</Keyword></KeywordList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="pubmed"><Year>2016</Year><Month>9</Month><Day>25</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2017</Year><Month>11</Month><Day>29</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate 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IdType="pubmed">20202192</ArticleId></ArticleIdList></Reference></ReferenceList></PubmedData></pubmed><affiliations><list><country><li>France</li><li>Royaume-Uni</li></country><region><li>Grand Est</li><li>Lorraine (région)</li></region><settlement><li>Champenoux</li><li>Metz</li><li>Nancy</li></settlement><orgName><li>Université de Lorraine</li></orgName></list><tree><country name="France"><region name="Grand Est"><name sortKey="Bizet, Francois" sort="Bizet, Francois" uniqKey="Bizet F" first="François" last="Bizet">François Bizet</name></region><name sortKey="Hummel, Irene" sort="Hummel, Irene" uniqKey="Hummel I" first="Irène" last="Hummel">Irène Hummel</name></country><country name="Royaume-Uni"><noRegion><name sortKey="Bengough, A Glyn" sort="Bengough, A Glyn" uniqKey="Bengough A" first="A Glyn" last="Bengough">A Glyn Bengough</name></noRegion><name sortKey="Bogeat Triboulot, Marie Beatrice" sort="Bogeat Triboulot, Marie Beatrice" uniqKey="Bogeat Triboulot M" first="Marie-Béatrice" last="Bogeat-Triboulot">Marie-Béatrice Bogeat-Triboulot</name><name sortKey="Dupuy, Lionel X" sort="Dupuy, Lionel X" uniqKey="Dupuy L" first="Lionel X" last="Dupuy">Lionel X. 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