植物研究2011，Vol.31Issue(6)：686-691,6.
空心莲子草营养器官结构与三萜皂苷动态积累的关系
Dynamic Relationships Between Structure and Saponins Accumulation in Vegetative Organs of Alternanthera philaxeroid Criseb
摘要
Abstract
The relationships between anatomical structure and the content of saponins in vegetative organs of Al-ternanthera philaxeroid were studied by means of histochemical localization, light microscope and quantitative a-nalysis. The results showed that triterpenoid saponins are accumulated in the perennial roots, stems, rhizomes and leaves of A. Philoxeroides, especially rich in leaves and rhizomes. The contents of triterpenoid saponins accumulated in vegetative organs are in the order of leaves > rhizomes > perennial root > stem under the same conditions , with leaf palisade tissue as main stored place. There were tertiary vascular bundles of concentric circular arrangement in transverse section of the perennial roots and rhizomes, which belongs to abnormal structure. Triterpenoid saponins were accumulated in secondary phloem, phelloderm, tertiary phloem and conjunctive tissue in perennial roots and rhizomes. The tertiary structure was not only the main parts in the perennial root and rhizome , but also important storage region of triterpenoid saponins. Accumulating trend of triterpenoid saponins at different collecting periods in leaves, rhizomes and perennial roots are similar, which increased with vegetative organs growing. The stem of A. Philoxeroides was composed of epidermis, cortex, vascular bundle and pith cavity in transverse section, and only a few cells of cortex and primary phloem deposited triterpenoid saponins.关键词
空心莲子草/营养器官/解剖结构/三萜皂苷含量/组织化学定位Key words
Altemanthera philoxeroides/ vegetative organs/ anatomic structure/ triterpenoid saponins/ histochemical localization分类
农业科技引用本文复制引用
王桂芹,徐如松,王锐..空心莲子草营养器官结构与三萜皂苷动态积累的关系[J].植物研究,2011,31(6):686-691,6.基金项目
安徽省教育厅自然科学基金资助重点项目(KJ2009A166) （KJ2009A166）
安徽科技学院专项基金资助项目(ZRC200436) （ZRC200436）
