[Survey of Bacillus thuringiensis and Bacillus sphaericus from soils of four provinces of China and their principal biological properties].
A number of isolates of Bacillus thuringiensis and Bacillus sphaericus were obtained from soils of Southwestern Area and Shaanxi Province of China. Among isolates of B. thuringiensis were under 13 sorts of serotype in total of 23 sorts of B. thuringiensis and about 20% of auto-agglutinate strains. Rules of ecologic distribution of two sorts of bacteria were analysed. Toxicities on six species of insects, morphology and crystal proteins of B. thuringiensis, as well as toxicities, morphology and crystal proteins of B. sphaericus, were investigated. 22 strains of more efficient of B. thuringiensis and 2 strains of more efficient of B. sphaericus were obtained. It was shown that B. thuringiensis is actually soil microorganism, and resource of B. thuringiensis is much fruitful in Southwestern Area of China.
Li
R
R
Wuhan Institute of Virology, Academia Sinica.
Dai
S
S
Li
X
X
Luo
C
C
Sheng
Z
Z
Sun
M
M
D001407:Bacillus / Q000145:classification / Q000302:isolation & purification*; D001413:Bacillus thuringiensis / Q000145:classification / Q000302:isolation & purification*; D002681:China; D012703:Serotyping; D012988:Soil Microbiology; D014774:Virulence