Asporogenous Bacillus thuringiensis Mutant Producing High Yields of delta-Endotoxin.
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.
Wakisaka
Y
Y
Shionogi Research Laboratories, Shionogi & Co., Ltd., Fukushima-ku, Osaka 553, Japan.
Masaki
E
E
Koizumi
K
K
Nishimoto
Y
Y
Endo
Y
Y
Nishimura
M S
MS
Nishiitsutsuji-Uwo
J
J