期刊
COMPTES RENDUS BIOLOGIES
卷 327, 期 9-10, 页码 785-790出版社
EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER
DOI: 10.1016/j.crvi.2004.04.008
关键词
cell wall; xylans; helicoidal texture; biological plywood
类别
The helicoidal organization of secondary cell walls is overviewed from several examples. Both the plywood texture and the occurrence of characteristic defects strongly suggest that the wall ordering is relevant of a cholesteric liquid-crystal assembly that is rapidly and strongly consolidated by lignification. A preferential localization of glucuronoxylans, major matrix components, and in vitro re-association experiments emphasize their preeminent role: (1) during the construction of the composite as directing the cellulose microfibrils in a helicoidal array; (2) during the lignification of the composite as a host structure for lignin precursors. (C) 2004 Academie des sciences. Published by Elsevier SAS. All rights reserved.
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