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<title lang=en>Mesoporosity changes from cambium to mature tension wood: a new step toward the understanding of maturation stress generation in trees</title>
<creator>Chang, Shan-Shan</creator>
<creator>Quignard, Françoise</creator>
<creator>Alméras, Tancrède</creator>
<creator>Clair, Bruno</creator>
<contributor>Laboratoire de Mécanique et Génie Civil (LMGC) ; Université de Montpellier (UM) - Centre National de la Recherche Scientifique (CNRS)</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>
<contributor>Institut Charles Gerhardt Montpellier - Institut de Chimie Moléculaire et des Matériaux de Montpellier (ICGM ICMMM) ; Université Montpellier 1 (UM1) - Université Montpellier 2 - Sciences et Techniques (UM2) - Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM) - 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>
<description>International audience</description>
<source>ISSN: 0028-646X</source>
<source>EISSN: 1469-8137</source>
<source>New Phytologist</source>
<publisher>Wiley</publisher>
<identifier>hal-01081834</identifier>
<identifier>https://hal.archives-ouvertes.fr/hal-01081834</identifier>
<identifier>https://hal.archives-ouvertes.fr/hal-01081834/document</identifier>
<identifier>https://hal.archives-ouvertes.fr/hal-01081834/file/Chang_al_Mesoporosity_changes_New-Phyto._2015.pdf</identifier>
<source>https://hal.archives-ouvertes.fr/hal-01081834</source>
<source>New Phytologist, Wiley, 2015, 205 (3), pp.1277-1287. 〈10.1111/nph.13126〉</source>
<identifier>DOI : 10.1111/nph.13126</identifier>
<relation>info:eu-repo/semantics/altIdentifier/doi/10.1111/nph.13126</relation>
<language>en</language>
<subject lang=en>cell wall maturation</subject>
<subject lang=en>maturation stress</subject>
<subject lang=en>mesoporosity</subject>
<subject lang=en>poplar (Populus deltoides x P. nigra)</subject>
<subject lang=en>tension wood.</subject>
<subject>[CHIM.MATE] Chemical Sciences/Material chemistry</subject>
<subject>[SDV.BV.BOT] Life Sciences [q-bio]/Vegetal Biology/Botanics</subject>
<subject>[SDV.SA.SF] Life Sciences [q-bio]/Agricultural sciences/Silviculture, forestry</subject>
<type>info:eu-repo/semantics/article</type>
<type>Journal articles</type>
<description lang=en>In order to progress in the understanding of mechanical stress generation, the mesoporosity of the cell wall and its changes during maturation of poplar (Populus deltoides x P. nigra) tension wood (TW) and opposite wood (OW) were measured by nitrogen adsorption–desorption. Variations in the thickness of the gelatinous layer (G-layer) were also measured to clarify whether the mesoporosity change simultaneously with the deposition of the G-layer in TW. Results show that mesoporous structures of TW and OW were very similar in early development stages before the deposition of G-layers. With the formation of the S2 layer in OW and the G-layer in TW, the mesopore volume decreased steeply before lignification. However, in TW only, the decrease in mesopore volume occurred together with the pore shape change and a progressive increase in pore size. The different patterns observed in TW revealed that pores from G-layers appear with a different shape compared to those of the compound middle lamella, and their size increases duringthe maturation process until stabilising in mature wood. This observation strongly supports the hypothesis of the swelling of the G-layer matrix during maturation as the origin of maturation stress in poplar tension wood.</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>
</dc>
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