Journal of Food, Agriculture and Environment

Vol 3, Issue 2,2005
Online ISSN: 1459-0263
Print ISSN: 1459-0255

Susceptibility of the locust Schistocerca gregaria to cells and cell-free solutions from the entomopathogenic bacterium Xenorhabdus nematophila


Ali N. Mahar 1*, N. G. M. Hague, Simon R. Gowen 2

Recieved Date: 2004-12-22, Accepted Date: 2005-03-21


Applications with cell suspensions and cell-free solutions from entomopathogenic bacterium Xenorhabdus nematophila to wheat plants were lethal to nymphs of Schistocerca gregaria. There was no significant difference in the toxicity of cell suspensions or cell-free solutions indicating that the toxins, present in both the cell suspensions and cell-free solutions, were responsible for the lethal effects observed. Cells of X. nematophila were recovered from dead nymphs feeding on wheat seedlings treated with the cell suspension. Cell suspensions and cell-free solutions were toxic to locust adults when applied orally or on bran. Cells applied orally did not penetrate into the abdominal haemocoele. Cells of X. nematophila and its cell-free toxic solutions were persistent in soil for several months. After five months storage at 25°C mortality of Galleria mellonella larvae used to bioassay the soil was still 40% of the original mortality obtained at the start of the experiment. Xenorhabdus nematophila cells could still be recovered 4 months after they were originally inoculated into soil.


Entomopathogenic bacterium, Xenorhabdus nematophila, locust, Schistocerca gregaria, biological control

Journal: Journal of Food, Agriculture and Environment
Year: 2005
Volume: 3
Issue: 2
Category: Agriculture
Pages: 195-198

Full text for Subscribers

Note to users

The requested document is freely available only to subscribers/registered users with an online subscription to the Journal of Food, Agriculture & Environment. If you have set up a personal subscription to this title please enter your user name and password. All abstracts are available for free.

Article purchasing

If you like to purchase this specific document such as article, review or this journal issue, contact us. Specify the title of the article or review, issue, number, volume and date of the publication. Software and compilation, Science & Technology, all rights reserved. Your use of this website details or service is governed by terms of use. Authors are invited to check from time to time news or information.

Purchase this Article:   20 Purchase PDF Order Reprints for 15

Share this article :