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

Mahar  Ali Nawaz  Munir  Muhammad  Elawad  Sami  Gowen  Simon Richard  Hague  Nigel Graham Meckenzi 《浙江大学学报(A卷英文版)》2004,5(10):1183-1190

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.  相似文献   

Boys,be ambitious: William Smith Clark and the westernisation of Japanese agricultural extension in the Meiji era     

Garrett Gowen  Rachel Friedensen 《Paedagogica Historica: International Journal of the History of Education》2016,52(5):542-558

Abstract

This article examines the historiography related to the 1876 founding of Sapporo Agricultural College, the first institution of its kind in Japan. Focusing specifically on the involvement of William Smith Clark, who previously served as the president of the Massachusetts Agricultural College, it argues that the nascent imperial ambitions harboured by both the United States and Japan are essential to a full understanding of Sapporo’s founding, curriculum and subsequent history. Drawing on both primary and secondary sources as well as theoretical perspectives on empire, this article depicts Sapporo as one small part of a larger campaign of westernisation.  相似文献   

Development of Pasteuria penetrans in Meloidogyne javanica females as affected by constantly high vs fluctuating temperature in an in-vivo system     

Darban DA  Gowen SR  Pembroke B  Mahar AN 《Journal of Zhejiang University. Science. B》2005,6(3):155-157

INTRODUCTION Pasteuria penetrans is an obligate, en-dospore-forming bacterial parasite of Meloidogynespp. and has shown potential as a biological controlagent against root-knot nematodes (Chen et al., 1996;Dickson et al., 1994) in pot experiments (Channer andGowen, 1988) and micro-plot experiments (Daudi etal., 1990; Trivino and Gowen, 1996). There are prac-tical and technical problems associated with massproduction of P. penetrans inoculum. In-vivo systems,although proven (Stirling an…  相似文献   

Pathogenicity of bacterium, Xenorhabdus nematophila isolated from entomopathogenic nematode （Steinernema carpocapsae） and its secretion against Galleria mellonella larvae     

Mahar AN  Munir M  Elawad S  Gowen SR  Hague NG 《Journal of Zhejiang University. Science. B》2005,6(6):457-463

INTRODUCTION Entomopathogenic nematodes of the generaSteinernema and Heterorhabditis have been used tocontrol a wide range of agriculturally important insectpests (Kaya and Gaugler, 1993). The mechanism bywhich these nematodes are able to infect and repro-duce in the insect host involves a mutual relationshipbetween the nematode and the symbiotic bacteria,Xenorhabdus spp. and Photorhabdus spp. (Akhurstand Dunphy, 1993; Forst and Nealson, 1996). Poinarand Thomas (1966) established tha…  相似文献