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<datestamp>2014-10-28</datestamp>
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<title lang=en>Mesoporosity as a new parameter for understanding tension stress generation in trees</title>
<creator>Chang, Shan-Shan</creator>
<creator>Clair, Bruno</creator>
<creator>Ruelle, Julien</creator>
<creator>Beauchêne, Jacques</creator>
<creator>Di Renzo, Francesco</creator>
<creator>Quignard, Françoise</creator>
<creator>Zhao, Guang-Jie</creator>
<creator>Yamamoto, Hiroyuki</creator>
<creator>Gril, Joseph</creator>
<contributor>Mécanique de l'Arbre et du Bois ; Laboratoire de Mécanique et de Génie Civil (LMGC) ; Université Montpellier 2 - Sciences et Techniques (UM2) - Université Montpellier 2 - Sciences et Techniques (UM2) - College of Materials Science and Technology ; Beijing Forestry University - Beijing Forestry University</contributor>
<contributor>Mécanique de l'Arbre et du Bois ; Laboratoire de Mécanique et de Génie Civil (LMGC) ; Université Montpellier 2 - Sciences et Techniques (UM2) - Université Montpellier 2 - Sciences et Techniques (UM2)</contributor>
<contributor>School of Bioagricultural Sciences ; Nagoya University</contributor>
<contributor>Ecologie des forêts de Guyane (ECOFOG) ; Université des Antilles et de la Guyane (UAG) - AgroParisTech - Institut national de la recherche agronomique (INRA) - Centre de coopération internationale en recherche agronomique pour le développement [CIRAD] - CNRS</contributor>
<contributor>Institut Charles Gerhardt Montpellier, UMR 5253 ; Université Montpellier 2 - Sciences et Techniques (UM2)</contributor>
<contributor>College of Materials Science and Technology ; Beijing Forestry University</contributor>
<description> </description>
<source>Journal of Experimental Botany</source>
<publisher>Oxford University Press (OUP): Policy B - Oxford Open Option A</publisher>
<identifier>hal-01032161</identifier>
<identifier>https://hal.archives-ouvertes.fr/hal-01032161</identifier>
<source>https://hal.archives-ouvertes.fr/hal-01032161</source>
<source>Journal of Experimental Botany, Oxford University Press (OUP): Policy B - Oxford Open Option A, 2009, 60 (11), pp.3023-3030. <10.1093/jxb/erp133></source>
<identifier>DOI : 10.1093/jxb/erp133</identifier>
<language>en</language>
<subject lang=en>GROWTH STRESS</subject>
<subject lang=en>HYDROGEL</subject>
<subject lang=en>MESOPOROTY</subject>
<subject lang=en>TENSION WOOD</subject>
<subject lang=en>GELATINOUS LAYER</subject>
<subject lang=en>SHRINKAGE</subject>
<subject lang=en>PHYSICAL PROPERTIES</subject>
<subject>[SDV.BV.BOT] Life Sciences/Vegetal Biology/Botanics</subject>
<type>Journal articles</type>
<description lang=en>The mechanism for tree orientation in angiosperms is based on the production of high tensile stress on the upper side of the inclined axis. In many species, the stress level is strongly related to the presence of a peculiar layer, called the G-layer, in the fibre cell wall. The structure of the G-layer has recently been described as a hydrogel thanks to N2 adsorption-desorption isotherms of supercritically dried samples showing a high mesoporosity (pores size from 2-50 nm). This led us to revisit the concept of the G-layer that had been, until now, only described from anatomical observation. Adsorption isotherms of both normal wood and tension wood have been measured on six tropical species. Measurements show that mesoporosity is high in tension wood with a typical thick G-layer while it is much less with a thinner G-layer, sometimes no more than normal wood. The mesoporosity of tension wood species without a G-layer is as low as in normal wood. Not depending on the amount of pores, the pore size distribution is always centred around 6-12 nm. These results suggest that, among species producing fibres with a G-layer, large structural differences of the G-layer exist between species.</description>
<date>2009</date>
</dc>
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