Microbial control of diamondback moth, Plutella xylostella L. （Lepidoptera： Yponomeutidae） using bacteria （Xenorhabdus nematophila） and its metabolites from the entomopathogenic nematode Steinernema carpocapsae  

作　　者：MAHARAliNawaz MUNIRMuhammad ELAWADSami 

机构地区：[1]DepartmentofAgriculture,UniversityofReading,ReadingRG66AT,UK [2]SchoolofPlantSciences,UniversityofReading,ReadingRG66AS,UK

出　　处：《Journal of Zhejiang University Science》2004年第10期1183-1190,共8页浙江大学学报（自然科学英文版）

摘　　要：Cells and cell-free solutions of the culture filtrate of the bacterial symbiont, Xenorhabdus nematophila taken from the entomopathogenic nematode Steinernema carpocapsae in aqueous broth suspensions were lethal to larvae of the diamondback moth Plutella xylostella. Their application on leaves of Chinese cabbage indicated that the cells can penetrate into the insects in the absence of the nematode vector. Cell-free solutions containing metabolites were also proved as effective as bacterial cells suspension. The application of aqueous suspensions of cells of X.nematophila or solutions containing its toxic metabolites to the leaves represents a possible new strategy for controlling insect pests on foliage.Cells and cell-free solutions of the culture filtrate of the bacterial symbiont, Xenorhabdus nematophila taken from the entomopathogenic nematode Steinernema carpocapsae in aqueous broth suspensions were lethal to larvae of the diamondback moth Plutella xylostella. Their application on leaves of Chinese cabbage indicated that the cells can penetrate into the insects in the absence of the nematode vector. Cell-free solutions containing metabolites were also proved as effective as bacterial cells suspension. The application of aqueous suspensions of cells of X. nematophila or solutions containing its toxic metabolites to the leaves represents a possible new strategy for controlling insect pests on foliage.

关 键 词：Bacterial symbionts Xenorhabdus nematophila Entomopathogenic nematode Steinernema carpocapsae Diamondback moth Plutella xylostella 

分 类 号：S436.35[农业科学—农业昆虫与害虫防治]