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Lignification and tension wood

Abstract : Hardwood trees are able to reorient their axes owing to tension wood differentiation. Tension wood is characterised by important ultrastructural modifications, such as the occurrence in a number of species, of an extra secondary wall layer, named gelatinous layer or G-layer, mainly constituted of cellulose microfibrils oriented nearly parallel to the fibre axis. This G-layer appears directly involved in the definition of tension wood mechanical properties. This review gathers the data available in the literature about lignification during tension wood formation. Potential roles for lignin in tension wood formation are inferred from biochemical, anatomical and mechanical studies, from the hypotheses proposed to describe tension wood function and from data coming from new research areas such as functional genomics.
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Submitted on : Monday, June 1, 2020 - 12:18:42 AM
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Gilles Pilate, Brigitte Chabbert, Bernard Cathala, Arata Yoshinoga, Jean-Charles Leplé, et al.. Lignification and tension wood. Comptes Rendus Biologies, Elsevier Masson, 2004, 327 (9-10), pp.889-901. ⟨10.1016/j.crvi.2004.07.006⟩. ⟨hal-02682031⟩



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