Comparison of the characteristics of cellulose microfibril aggregates isolated from fiber and parenchyma cells of Moso bamboo (Phyllostachys pubescens)
Comparison of the characteristics of cellulose microfibril aggregates isolated from fiber and parenchyma cells of Moso bamboo (Phyllostachys pubescens)
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DOI：
10.1007/s10570-009-9382-1
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发表时间：
2010-04-01
期刊：
影响因子：
5.7
通讯作者：
Yano, Hiroyuki
中科院分区：
文献类型：
--
作者：
Abe, Kentaro;Yano, Hiroyuki
本研究探讨了植物细胞功能与细胞壁纤维素微纤丝聚集体特性之间的关系。为此，将毛竹成熟秆分为纤维细胞和薄壁细胞，并对纤维素微纤丝聚集体的形态和物理性质进行了比较。扫描电镜观察表明，纤维细胞和薄壁细胞都由宽度约15-20 nm的相似的微纤丝聚集体组成。此外，X-射线分析和拉伸试验的片材制备的微纤丝聚集体表明，纤维素微纤丝分离纤维和薄壁细胞具有几乎相同的纤维素结晶度和纵向杨氏模量在干燥状态下。这些结果表明，无论细胞功能如何，在同一个体中合成的所有纤维素微纤丝在干燥状态下都表现出相同的特征。
This study examined the relationship between the functions of plant cells and the characteristics of cellulose microfibril aggregates in the cell walls. For this purpose, the mature bamboo (Phyllostachys pubescens) culm was separated into fiber and parenchyma cells, and then the morphological and physical properties of the cellulose microfibril aggregates isolated from both cells were compared. SEM observations revealed that both fiber and parenchyma cells consist of similar microfibril aggregates approximately 15-20 nm in width. Moreover, X-ray analysis and the tensile tests of the sheets prepared from the microfibril aggregates showed that the cellulose microfibrils isolated from fiber and parenchyma cells had almost the same cellulose crystallinity and longitudinal Young's modulus in the dry state. These results suggest that all the cellulose microfibrils synthesized in the same individual exhibit the same characteristics in the dry state regardless of cell function.