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Asporogenous Bacillus thuringiensis Mutant Producing High Yields of delta-Endotoxin
Y Wakisaka1, E Masaki, K Koizumi
1Shionogi Research Laboratories, Shionogi & Co., Ltd., Fukushima-ku, Osaka 553, Japan.
Applied and Environmental Microbiology
|June 1, 1982
Abstract:
An asporogenous Bacillus thuringiensis subsp. kurstaki strain IK mutant, strain 290-1, which produced high yields of delta-endotoxin, was obtained by ethyl methane sulfonate treatment of a spore suspension. The mutant strain produced about the same amount of delta-endotoxin as that produced by the parent strain, but 10 to 10 cells did not form any detectable dormant spores.
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