文献类型：期刊文献

英文题名：Use of atomic force microscopy to view ultrastructure of the fiber cell wall in Phyllostachys edulis culms

作者：Lian, Caiping[1,2] An, Xin[3,4] Lv, Huangfei[5] Wu, Zhihui[1,2] Cao, Mingxing[1,2] Fei, Benhua[4]

第一作者：Lian, Caiping

通信作者：Fei, BH[1]

机构：[1]Nanjing Forestry Univ, Nanjing 10037, Peoples R China;[2]Jiangsu Coinnovat Ctr Efficient Proc & Utilizat Fo, 10037, Nanjing, Peoples R China;[3]Chinese Acad Forestry, Res Inst Wood Ind, Beijing 100191, Peoples R China;[4]Int Ctr Bamboo & Rattan, Beijing 100102, Peoples R China;[5]Anhui Agr Univ, Hefei 230036, Peoples R China

年份：0

外文期刊名：CELLULOSE

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000910808200001)】；

基金：AcknowledgmentsThe authors acknowledge the financial support from the National Promotion Project of Forestry Scientific and Technological Achievements (Grant No. 56201) and the National Natural Science Foundation (Grant No. 32101601).

语种：英文

外文关键词：Fiber cell wall; Microfibrils; Atomic force microscopy; Inherent structure; Morphology characteristics

摘要：Bamboo fiber cell wall structure, including cellulose microfibril morphology, endows fibers with excellent and stable mechanical strength and toughness. Due to the imaging resolution limitations, the ultra-structure of bamboo fiber cell walls remains elusive. Here we characterized the fiber cell wall's inherent structure and the cellulose microfibril's cross-sectional shape from native and delignified inclined samples, and the tangential sections of moso bamboo using atomic force microscopy. The secondary cell wall sublayer was composed of multiple microfibril layers, 20 nm in thickness each. The 18 nm in diameter spherical particles between microfibrils were lignin. The bamboo fiber cell wall's microfibrils were composed of various numbers of individual cellulose elementary fibrils (CEFs), including one, two, three, four, and multiple CEFs (up to 7 CEFs). The microfibrils' dimensions varied from 3.5 to 40 nm. Additionally, branched microfibrils are described for the first time in the bamboo plant. The study provides insight into the nanometer-scale structure of the fiber cell wall in the bamboo plant.