Genetic Diversity among Escherichia coli Isolates Carrying f18 Genes from Pigs with Porcine Postweaning Diarrhea and Edema Disease

AUTOR(ES)

Nagy, Béla

FONTE

American Society for Microbiology

RESUMO

Multilocus enzyme electrophoresis was applied to detect allelic variation and multilocus genotypes (electrophoretic types [ETs]) among 43 Escherichia coli isolates from weaned pigs suffering from edema disease or from diarrhea. ETs were analyzed in relation to O serogroups and virulence genes (sta, stb, lt, stx2, and f18) by DNA hybridization. Genomic diversity was the lowest in serogroup O138, while virulence genes (stx2 and f18) were the most uniform in serogroup O139. In general, the serogroups or toxin and F18 fimbria types were not related to selected ETs, suggesting that the toxin and f18 fimbria genes in E. coli isolates from pigs with postweaning diarrhea or edema disease occur in a variety of chromosomal backgrounds.

Documentos Relacionados

• The AIDA Autotransporter System Is Associated with F18 and Stx2e in Escherichia coli Isolates from Pigs Diagnosed with Edema Disease and Postweaning Diarrhea
• Phenotype and genotype of Escherichia coli isolated from pigs with postweaning diarrhea in Hungary.
• Inhibitory Activities of Colicins against Escherichia coli Strains Responsible for Postweaning Diarrhea and Edema Disease in Swine
• Characterization of the Adhesin of Escherichia coli F18 Fimbriae
• Molecular characterization of Escherichia coli strains isolated from pigs with edema disease.