西北林学院学报2024，Vol.39Issue(2)：203-209,7.DOI:10.3969/j.issn.1001-7461.2024.02.26
基于拉曼技术的高地钩叶藤导管壁化学成分微区分布研究
Microdistribution of Chemical Components in the Vessel Wall of Plectocomia himalayana Based on Raman Spectroscopy
摘要
Abstract
The objective of this study was to explore the mechanism of the excellent toughness and the high-value utilization of the rattans.Plectocomia himalayana was chosen as the research object.The microdis-tribution of chemical components in vessel wall was measured and analyzed by using confocal micro-Raman spectroscopy.The results showed that the molecular concentration of cellulose in the vessel wall was in the order of secondary wall＞composite intercellular layer＞cell corner,and the molecular concentration order of lignin was just the opposite.There was little difference in the molecular concentrations of cellulose,lig-nin or hemicellulose between the inner and outer layers of the secondary wall.In the radial direction of rat-tan stem,while the molecular concentrations of lignin in the middle layer of secondary wall of vessel and cell corner at the core were the highest,and the molecular concentration of hemicellulose in the vessel at the cortex was also the highest.The cellulose molecular concentration in middle layer of the secondary wall of vessel in the cortex was the lowest,while it was the highest in cell corner.The molecular concentration of hemicellulose in the cell corner in the middle layer(i.e.the layer between core and cortex)and core was very low.In the axial direction of rattan stem,with the increase of height,the variation trend of lignin and hemicellulose molecular concentration in the middle layer of the secondary wall in cortex was the same,however,the variation trend of cellulose molecular concentration between cortex and core was completely opposite.It is concluded that the distributions of cellulose,hemicellulose,and lignin in each wall layer of vessel show a certain regularity,no regularity is found in the radial and axial directions of the rattan stem.关键词
高地钩叶藤/导管/细胞壁成分/拉曼光谱/化学成分/微区分布Key words
Plectocomia himalayana/vessel/cell wall component/Raman spectra/chemical composition/microdistribution分类
农业科技引用本文复制引用
汪佑宏,余林鹏,张菲菲,杨明亮,江泽慧,马建锋,田根林..基于拉曼技术的高地钩叶藤导管壁化学成分微区分布研究[J].西北林学院学报,2024,39(2):203-209,7.基金项目
"十四五"国家重点研发计划课题(2022YFD2200901) （2022YFD2200901）
国家自然科学基金项目(31800476). （31800476）
