title: Use of cellular fatty acid analysis to characterize commercial brands of Bacillus thuringiensis var. israelensis.
abstract: The cellular fatty acid composition of Bacillus thuringiensis var. israelensis (B.t.i.) from 5 commercial brands (Vectobac, Acrobe, Skeetal, Bactimos and Teknar), as well as of the current International Standard for B.t.i. (IPS 82), was determined using a Hewlett-Packard Microbial Identification System. The original strain of B.t.i., B.t. var. kurstaki, B.t. var. thuringiensis, B.t. var. morrisoni and Bacillus sphaericus strain 2362 were used as outgroups. Acrobe, Bactimos, Teknar, Vectobac and IPS 82 consisted of the same strain. Skeetal represented a different strain than the other commercially produced B.t.i. Our results indicate that cellular fatty acid analysis can be used to distinguish among the forms of B.t.i. produced by various manufacturers.
authors.affiliation: Illinois Natural History Survey, Center for Economic Entomology, Champaign.
authors.forename: J P
authors.initials: JP
authors.lastname: Siegel
authors.forename: A R
authors.initials: AR
authors.lastname: Smith
authors.forename: J V
authors.initials: JV
authors.lastname: Maddox
authors.forename: R J
authors.initials: RJ
authors.lastname: Novak
mesh_terms: D001413:Bacillus thuringiensis / Q000737:chemistry*; D005227:Fatty Acids / Q000032:analysis*
chemical_list: D005227:Fatty Acids