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<publisher>HAL CCSD</publisher>
<title lang=en>Biomechanics of habit and plants strategies of growth in height: environmental constraints, regulator processes and traits</title>
<creator>Coutand, Catherine</creator>
<creator>Fournier, Mériem</creator>
<creator>Alméras, Tancrède</creator>
<creator>Jaouen, Gaëlle</creator>
<creator>Moulia, Bruno, </creator>
<contributor>Laboratoire de Physique et Physiologie Intégratives de l'Arbre Fruitier et Forestier (PIAF) ; Institut National de la Recherche Agronomique (INRA) - Université Blaise Pascal - Clermont-Ferrand 2 (UBP)</contributor>
<contributor>Laboratoire d'Etudes des Ressources Forêt-Bois (LERFoB) ; Institut National de la Recherche Agronomique (INRA) - AgroParisTech</contributor>
<contributor>Mécanique de l'Arbre et du Bois (MAB) ; Laboratoire de Mécanique et Génie Civil (LMGC) ; Université de Montpellier (UM) - Centre National de la Recherche Scientifique (CNRS) - Université de Montpellier (UM) - Centre National de la Recherche Scientifique (CNRS)</contributor>
<contributor>Ecologie des forêts de Guyane (ECOFOG) ; Centre de Coopération Internationale en Recherche Agronomique pour le Développement (CIRAD) - Institut National de la Recherche Agronomique (INRA) - Université des Antilles et de la Guyane (UAG) - AgroParisTech - Centre National de la Recherche Scientifique (CNRS)</contributor>
<source>Colloque Adaptation au Changement Climatique de l'Agriculture et des Ecosystèmes</source>
<identifier>hal-00797377</identifier>
<identifier>https://hal.archives-ouvertes.fr/hal-00797377</identifier>
<source>https://hal.archives-ouvertes.fr/hal-00797377</source>
<source>Colloque Adaptation au Changement Climatique de l'Agriculture et des Ecosystèmes, 2010, France</source>
<language>en</language>
<subject>[SPI.MECA.BIOM] Engineering Sciences [physics]/Mechanics [physics.med-ph]/Biomechanics [physics.med-ph]</subject>
<subject>[PHYS.MECA.BIOM] Physics [physics]/Mechanics [physics]/Biomechanics [physics.med-ph]</subject>
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<type>Conference papers</type>
<description lang=en>For their survival, plants need to grow in height to access light resource while ensuring their mechanical stability. Growth in height amplifies the mechanical constraints due to wind and gravity. Nevertheless these constraints represent morphogenetic signals that plants respond to by modifying their growth. There are two regulatory processes of growth by mechanical signals: thigmomorphogenesis and gravitropism. Thigmomorphogenesis expresses by a reduction of growth in height and an increase of growth in girth under the effect of mechanical signals. This is a way for plants to grow with controlling slenderness of their axes to avoid buckling (beating down). In some cases (storm, sudden exposure to a new mechanical environment) this process is not sufficient to prevent buckling, gravitropism then acts to restore axes orientation in case of no lethal buckling. With measuring several traits, we have demonstrated that these processes have a fundamental ecological role in the control of tree habit and the vertical structuration of ecosystems. As studies of climate changes seem to predict a higher frequency of storms it is important to study the diversity of their efficiency.</description>
<date>2010</date>
</dc>
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