文献类型：期刊文献

英文题名：Cellulose structure and lignin distribution in normal and compression wood of the Maidenhair tree (Ginkgo biloba L.)

作者：Andersson, Seppo[1] Wang, Yurong[2] Ponni, Raili[3] Hanninen, Tuomas[4] Mononen, Marko[1] Ren, Haiqing[2] Serimaa, Ritva[1] Saranpaa, Pekka[5]

第一作者：Andersson, Seppo

通信作者：Andersson, S[1]

机构：[1]Univ Helsinki, Dept Phys, Helsinki 00560, Finland;[2]Chinese Acad Forestry, Res Inst Wood Ind, Beijing 100091, Peoples R China;[3]Aalto Univ, Sch Chem Technol, Dept Forest Prod Technol, Aalto 00076, Finland;[4]VTT Tech Res Ctr Finland, Espoo 02044, Finland;[5]Nat Resources Inst Finland, Vantaa 01300, Finland

年份：2015

卷号：57

期号：4

起止页码：388-395

外文期刊名：JOURNAL OF INTEGRATIVE PLANT BIOLOGY

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000352493100008)】；

基金：The authors thank the National Natural Science Foundation (31370562) for financial support and Mr Tapio Jarvinen for skillful sample preparation.

语种：英文

外文关键词：Cellulose structure; cell wall; compression wood; lignin; Maidenhair tree; microfibril angle

摘要：We studied in detail the mean microfibril angle and the width of cellulose crystals from the pith to the bark of a 15-year-old Maidenhair tree (Ginkgo biloba L.). The orientation of cellulose microfibrils with respect to the cell axis and the width and length of cellulose crystallites were determined using X-ray diffraction. Raman microscopy was used to compare the lignin distribution in the cell wall of normal/opposite and compression wood, which was found near the pith. Ginkgo biloba showed a relatively large mean microfibril angle, varying between 19 degrees and 39 degrees in the S2 layer, and the average width of cellulose crystallites was 3.1-3.2nm. Mild compression wood without any intercellular spaces or helical cavities was observed near the pith. Slit-like bordered pit openings and a heavily lignified S2L layer confirmed the presence of compression wood. Ginkgo biloba showed typical features present in the juvenile wood of conifers. The microfibril angle remained large over the 14 annual rings. The entire stem disc, with a diameter of 18cm, was considered to consist of juvenile wood. The properties of juvenile and compression wood as well as the cellulose orientation and crystalline width indicate that the wood formation of G. biloba is similar to that of modern conifers.