New high-toxicity mosquitocidal strains of Bacillus sphaericus lacking a 100-kilodalton-toxin gene.
Five new high-toxicity mosquitocidal strains of Bacillus sphaericus were isolated in Singapore. They all belong to phage group 8 and have binary toxin (51.4- plus 41.9-kDa) genes located on the chromosome but lack a 100-kDa-toxin gene. These strains of B. sphaericus constitute a new subgroup, as only two weakly toxic strains in phage group 8 have previously been described and all the known high-toxicity strains have both binary toxin and 100-kDa-toxin genes.
Liu
J W
JW
Institute of Molecular and Cell Biology, National University of Singapore.
Hindley
J
J
Porter
A G
AG
Priest
F G
FG
D000818:Animals; D001407:Bacillus / Q000235:genetics* / Q000302:isolation & purification; D001427:Bacterial Toxins / Q000235:genetics; D009033:Culicidae; D004269:DNA, Bacterial / Q000235:genetics; D005798:Genes, Bacterial; D010572:Pest Control, Biological / Q000379:methods*; D012846:Singapore
D001427:Bacterial Toxins; D004269:DNA, Bacterial