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Association Of K-1 Capsule, Smooth Lipopolysaccharides, Trat Gene, And Colicin V Production With Complement Resistance And Virulence Of Avian Escherichia Coli, Richard E. Wooley, Lisa K. Nolan, John Brown, Penelope S. Gibbs, Catherine W. Giddings, Kathy S. Turner
Association Of K-1 Capsule, Smooth Lipopolysaccharides, Trat Gene, And Colicin V Production With Complement Resistance And Virulence Of Avian Escherichia Coli, Richard E. Wooley, Lisa K. Nolan, John Brown, Penelope S. Gibbs, Catherine W. Giddings, Kathy S. Turner
Lisa K. Nolan
A group of complement-resistant, virulent avian Eschberichia coli isolates were compared with a group of complement-sensitive, avirulent avian isolates for the presence of K-1 capsule, smooth lipopolysaccharides (LPS), the traT gene, and Colicin V (ColV) production. These parameters were selected because of their reported association with complement resistance and virulence in E. coli. Lethality in chicken embryos has also been shown to be correlated with virulence of avian E. colifor chickens. The complement-resistant, virulent E. coli isolates did not possess a K-1 capsule. Production of ColV and the presence of smooth LPS were significantly correlated with embryo lethality. There was …