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Matrine Enhances the Pathogenicity of Beauveria brongniartii Against Spodoptera litura (Lepidoptera: Noctuidae)

文献类型： 外文期刊

作者： Wu, Jianhui 1 ; Yu, Xintong 1 ; Wang, Xiaoshuang 1 ; Tang, Liangde 2 ; Ali, Shaukat 1 ;

作者机构： 1.South China Agr Univ, Engn Res Ctr Biol Control, Key Lab Biopesticide Innovat & Applicat, Guangzhou, Guangdong, Peoples R China

2.Chinese Acad Trop Agr Sci, Minist Agr Environm & Plant Protect Inst, Key Lab Integrated Pest Management Trop Crops, Haikou, Hainan, Peoples R China

关键词： natural chemicals; entomopathogenic fungi; matrine; synergism; Spodoptera litura

期刊名称：FRONTIERS IN MICROBIOLOGY （ 影响因子：5.64； 五年影响因子：6.32 ）

ISSN： 1664-302X

年卷期： 2019 年 10 卷

页码：

收录情况： SCI

摘要： The repetitive application of pesticides at high doses against Spodoptera litura Fabricius has resulted in development of pesticide resistance and harmful effects to the natural environmental. Hence, finding alternate pest control strategies, such as entomopathogenic fungi or their application in combination with other natural chemicals, is of great importance to solve the abovementioned problems. This study presents the toxic effects of Beauveria brongniartii and matrine (individual or in combination with each other) against tobacco cutworm (S. litura). Different matrine treatments caused a dose dependent increase in S. litura mortality at different time intervals. The biological parameters of B. brongniartii (germination rate and average daily mycelia growth) were not inhibited by different matrine treatments. Different conidial concentrations of B. brongniartii caused significantly different mortalities of 2nd instar S. litura larvae at different time intervals. Different combined treatments of B. brongniartii and matrine showed a significant synergistic effect against S. litura under laboratory and semifield conditions. The current findings showed a strong synergistic action for combined application of B. brongniartii and matrine against S. litura. Our results will provide baseline information on combined application of entomopathogenic fungi and natural chemicals in integrated pest management programs against S. litura.

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