Chapter 19 : Bacteria as Environmental Tools

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was discovered in Japan in silkworms in 1902 and was later isolated from flour moths in Thüringen, Germany, in 1911. is an entomopathogenic bacterium that was rapidly adopted worldwide as a biopesticide thanks to its toxicity to the larvae of insects, including butterflies, beetles, flies, hymenoptera, homoptera, and lice, as well as certain invertebrates. The toxin, often referred to as , is made up of the proteins Cry and Cyt, two delta-endotoxins that are generated during sporulation. More than 600 genes have so far been identified. Beyond its unique ability to produce Cry toxins, is very similar to , the bacterial agent of anthrax, and to , an environmental bacterium that can cause foodborne disease. produces other factors that contribute to its usefulness as an insecticide, including chitinases, proteases, and other toxins. The specificity of Bt's action is related to the specificity of its toxins.

Citation: Cossart P. 2018. Bacteria as Environmental Tools, p 143-146. In The New Microbiology: From Microbiomes to CRISPR. ASM Press, Washington, DC. doi: 10.1128/9781683670117.ch19
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