Araim Ghada, Saleem Ammar, Arnason John T, Charest Christiane
Department of Biology, University of Ottawa, Ottawa, Ontario, Canada.
J Agric Food Chem. 2009 Mar 25;57(6):2255-8. doi: 10.1021/jf803173x.
Purple coneflower, Echinacea purpurea (L.) Moench, is an important phytomedicinal species that contains phenolics and alkamides with antipathogenic properties. This study aimed to examine the effect of arbuscular mycorrhizal (AM) colonization on the physiology and biochemistry of E. purpurea. It was hypothesized that AM colonization enhances the growth and secondary metabolism in E. purpurea. In this regard, a 13-week factorial greenhouse experiment was performed with E. purpurea, inoculated (or not) with the AM fungus Glomus intraradices Schenck & Smith. Overall, the results indicated that AM colonization significantly increased the mass of shoots and roots and the concentrations of proteins and most of the phenolics in the roots. Hence, the selected trait of mycorrhiza could play an important role in optimizing the growth of E. purpurea by inducing the production of secondary phytomedicinal metabolites.
紫锥菊，紫松果菊（Echinacea purpurea (L.) Moench），是一种重要的植物药品种，含有具有抗病原特性的酚类和酰胺类物质。本研究旨在考察丛枝菌根（AM）定殖对紫松果菊生理生化的影响。研究假设AM定殖可促进紫松果菊的生长和次生代谢。为此，进行了一项为期13周的析因温室试验，以紫松果菊为对象，接种（或不接种）AM真菌根内球囊霉（Glomus intraradices Schenck & Smith）。总体而言，结果表明，AM定殖显著增加了地上部和根部的质量以及根部蛋白质和大多数酚类物质的浓度。因此，所选的菌根特性可能通过诱导植物药次生代谢产物的产生，在优化紫松果菊生长方面发挥重要作用。
