Sustainable control of the rice pest, Nilaparvata lugens, using the entomopathogenic fungus Isaria javanica

文献类型： 外文期刊

第一作者： Zhao, Qian

作者： Zhao, Qian;Ye, Lu;Wang, Zhaolei;Huang, Zhen;Li, Yanfang;Zhang, Yang;Keyhani, Nemat O.;Huang, Zhen

作者机构：

关键词： Isaria javanica; Nilaparvata lugens; entomopathogenic fungus; brown planthopper; rice; sustainable pest control

期刊名称：PEST MANAGEMENT SCIENCE （ 影响因子：4.845； 五年影响因子：4.674 ）

ISSN： 1526-498X

年卷期： 2021 年 77 卷 3 期

页码：

收录情况： SCI

摘要： BACKGROUND The brown planthopper (Nilaparvata lugens) is an insect pest of rice (Oryza sativa) that is distributed worldwide and is responsible for significant crop yield losses. Of particular concern, N. lugens has developed high resistance to several commonly used insecticides. The entomopathogenic fungus, Isaria javanica, offers an alternative to insecticides for the control of rice plant pests. RESULTS We show that I. javanica caused high mortality of N. lugens nymphs and reduced the survival and fecundity of newly emerged adults in I. javanica-treated insects. I. javanica persisted on plants up to 17 days after its inoculation under greenhouse conditions carried out in summer and autumn. Rice metabolites supported conidial germination and mycelia growth of I. javanica. A granular formulation of I. javanica conidia controlled N. lugens populations in a field experiment. The granular formulation promoted fungal survival and growth in the field up to 28 days post inoculation, resulting in increased fungal persistence and greater pest control coverage. CONCLUSION These data indicate that a granular formulation of I. javanica is able to control N. lugens populations in rice fields. Therefore, this granular formulation can be an alternative to insecticides and can be used in organic fields.

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