Antiviral activity of Eupatorium adenophorum leaf extract against tobacco mosaic virus

文献类型： 外文期刊

第一作者： Hou, Lingyu

作者： Hou, Lingyu;Zhang, Miaozhi;Xie, Xiangming;Tian, Zhaofeng;Cao, Aocheng

作者机构：

关键词： Eupatorium adenophorum Spreng;Tobacco mosaic virus;Antiviral activity;Leaf extract

期刊名称：CROP PROTECTION （ 影响因子：2.571； 五年影响因子：3.11 ）

ISSN： 0261-2194

年卷期： 2014 年 60 卷

页码：

收录情况： SCI

摘要： Eupatorium adenophorum Spreng is a major invasive plant in China causing great economic losses. Considerable effort has been expended searching for new and innovative methods for integrative management of this species. In this study, an E. adenophorum extract was tested for antiviral activity against tobacco mosaic virus (TMV) using the local lesion assay method, and also characterized. The E. adenophorum leaf extract was able to strongly inhibit TMV infection, with electron microscopic observations indicating that the virus particles had been disaggregated. The active components in the extract are thermostable, stable at acidic pH, and largely not dialyzable. Tobacco seedlings treated with the extract exhibited significantly elevated superoxide dismutase, peroxidase, and polyphenol oxidase activities. Our results the first reported observations of antiviral activity from leaf extracts of E. adenopho rum suggest that this species is a promising source of antiviral substances for practical use. (C) 2014 Elsevier Ltd. All rights reserved.

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