芦荟属植物叶的结构与蒽醌类物质的关系

Relationship between leaf structures of Aloe L. and its anthraquinone content

目的 蒽醌类物质是芦荟属植物的重要药用成分 ,主要存在于叶内 ,研究叶的结构与蒽醌类物质关系有重要意义。方法 应用植物解剖学、组织化学和植物化学方法研究 11种芦荟属植物叶。结果 芦荟属植物叶的基本结构类似 ,维管束韧皮部内具大型薄壁细胞为该属的结构特征 ,是蒽醌类物质的主要贮存场所 ;不同种植物叶内及同种植物叶的不同部分中蒽醌类物质的含量不同与维管束分布密度、大型薄壁细胞所占比率及同化组织厚度成正相关。

Object Anthraquinones present in the leaves of Aloe L are the main active principle for medical purposes Therefore, to study their relationship is of great interest to the medical profession Methods Leaves of 11 species of Aloe L were studied by phytotomy, histochemistry and phytochemistry Results The structures of the aloe leaves were basically similar as characterized by the presence of the large, well developed parenchymatous cells in the phloem pole where anthraquinones were stored Some positive correlations exist between the contents of anthroquinones in the leaves of different species and different parts of leaves of the same species, and some phytotomic factors including the density of vascular bundles, the ratio of large parenchymatous cells in phloem and the thickness of the chlorenchyma Conclusion Results of the study may provide references during purchasing and for the selection and breeding of new improved species