Insecticidal toxin useless without 'friendly' bacteria accomplices
Wednesday, March 4, 2009 - 14:35
in Biology & Nature
The toxin produced by the bacterium Bacillus thuringiensis (Bt) is a popular insecticide used to control pest moths and butterflies, and in some GM pest-proof crops. In a study published in the open access journal BMC Biology, researchers show that its effectiveness against a number of susceptible Lepidopteran species depends on the presence of the normally 'friendly' bacteria that colonise their guts. Without these bacteria, the Bt toxin can become impotent in some species...
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