ELECTRON-DIFFRACTION FROM PRIMARY WALL OF COTTON FIBERS
ELECTRON-DIFFRACTION FROM PRIMARY WALL OF COTTON FIBERS
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DOI：
10.1007/bf01276778
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发表时间：
1978-01-01
期刊：
影响因子：
2.9
通讯作者：
VUONG, R
中科院分区：
文献类型：
--
作者：
CHANZY, H;IMADA, K;VUONG, R
电子衍射图案，从选定的地区的脱壳微纤维分离棉纤维的初生细胞壁。所得的纤维图具有与次生壁微纤丝的相应图案相同的赤道重复距离，但在赤道反射中明显不同。主壁图显示只有两个中心在0.570 nm和0.416 nm的强赤道反射。这些间距与纤维素IV的相似性表明初生壁纤维素的晶体结构与纤维素IVI的晶体结构相似，并且最好用具有良好纵向连贯性的天然纤维素I晶体来解释（即，沿着微纤丝长度的连贯性），但具有差的链间H键网络的横向组织。其他初生壁标本也得到了类似的结果。
Electron diffraction patterns were obtained from selected areas of disencrusted microfibrils isolated from the primary cell wall of cotton fibers. The resultant fiber diagram has the same meridional repeat distance as a corresponding pattern of secondary wall microfibrils but differs markedly in the equatorial reflections. The primary wall diagram displays only 2 strong equatorial reflections centered at 0.570 nm and 0.416 nm. The similarity of these spacings with those of cellulose IV suggests that the crystalline structure of the primary wall cellulose is similar to that of cellulose IVI and is best explained in term of native cellulose I crystals having good longitudinal coherence (i.e., coherence along the length of the microfibrils) but with poor lateral organization of the network of inter-chain H bonds. Similar results were also obtained for other primary wall specimens.