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<title lang=en>Cell wall thickening in developing tension wood of artificially bent poplar trees</title>
<creator>Abedini, Raoufeh</creator>
<creator>Clair, Bruno</creator>
<creator>Pourtahmasi, Kambiz</creator>
<creator>Laurans, Françoise</creator>
<creator>Arnould, Olivier</creator>
<contributor>Dept Wood Sci & Technol ; University of Tehran</contributor>
<contributor>Laboratoire de Mécanique et Génie Civil (LMGC) ; 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 - Université de Guyane (UG) - Centre National de la Recherche Scientifique (CNRS)</contributor>
<contributor>Unité de recherche Amélioration, Génétique et Physiologie Forestières (UAGPF) ; Institut National de la Recherche Agronomique (INRA)</contributor>
<contributor>Bois (BOIS) ; 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>
<description>International audience</description>
<source>IAWA journal / International Association of Wood Anatomists.</source>
<identifier>hal-01229277</identifier>
<identifier>https://hal.archives-ouvertes.fr/hal-01229277</identifier>
<identifier>https://hal.archives-ouvertes.fr/hal-01229277/document</identifier>
<identifier>https://hal.archives-ouvertes.fr/hal-01229277/file/AbediniClair-Iawa-TensionCellWallThickening_preprint_HAL.pdf</identifier>
<source>https://hal.archives-ouvertes.fr/hal-01229277</source>
<source>IAWA journal / International Association of Wood Anatomists., 2015, 36 (1), pp.44-57. 〈10.1163/22941932-00000084〉</source>
<identifier>DOI : 10.1163/22941932-00000084</identifier>
<relation>info:eu-repo/semantics/altIdentifier/doi/10.1163/22941932-00000084</relation>
<language>en</language>
<subject lang=en>maturation stress</subject>
<subject lang=en>tree biomechanics</subject>
<subject lang=en>gelatinous layer</subject>
<subject lang=en>secondary wall layer</subject>
<subject lang=en>developing xylem</subject>
<subject>[SPI.OTHER] Engineering Sciences [physics]/Other</subject>
<subject>[SDV.BV] Life Sciences [q-bio]/Vegetal Biology</subject>
<type>info:eu-repo/semantics/article</type>
<type>Journal articles</type>
<description lang=en>Trees can control their shape and resist gravity thanks to their ability to produce wood under tensile stress. This stress is known to be produced during the maturation of wood fibres but the mechanism of its generation remains unclear. This study focuses on the formation of the secondary wall in tension wood produced in artificially tilted poplar saplings. Thickness of secondary wall layer (SL) and gelatinous layer (GL) were measured from cambium to mature wood in several trees sampled at different times after tilting. Measurements on wood fibres produced before tilting show the progressive increase of secondary wall thickness during the growing season. After the tilting date, SL thickness decreased markedly from normal wood to tension wood while the total thickness increased compared to normal wood, with the development of a thick GL. However, even after GL formation, SL thickness continues to increase during the growing season. GL thickening was observed to be faster than SL thickening. The development of the unlignified GL is proposed to be a low cost, efficient strategy for a fast generation of tensile stress in broadleaved trees.</description>
<date>2015</date>
<contributor>ANR-12-BS09-0004, StressInTrees, Approche couplée physiologique et micro-mécanique de la génération des contraintes de maturation dans le bois de tension(2012)</contributor>
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