Antigenic and molecular characterization of Vibrio ordalii strains isolated from Atlantic salmon Salmo salar in Chile

Diseases of Aquatic Organisms
Andrés Silva-RubioRubén Avendaño-Herrera

Abstract

Biochemical, serological and molecular properties of a group of 14 Vibrio ordalii strains isolated from cultured Atlantic salmon Salmo salar in Chile in recent years were studied. The characteristics of isolates were compared with the type strain V. ordalii ATCC 33509T. The Chilean V. ordalii represented a biochemically homogenous group; however, some minor differences with the type strain were observed. The serological relationships among isolates, as well as the study of their antigenic determinant (LPS) revealed a strong reaction with antisera raised against Atlantic salmon strains and the antiserum raised against Listonella anguillarum serotype O2. However, LPS electrophoretic patterns were completely different from the V. ordalii type strain, regardless of the serum employed, suggesting the possibility that the Chilean strains constitute a new serological subgroup within this bacterial species. Genetic analyses by PFGE, RAPD, REP-PCR and ERIC-PCR demonstrated that all V. ordalii strains were genetically homogenous, displaying similar DNA patterns, regardless of the techniques used. Moreover, the analysis of DNA banding patterns generated by ERIC-PCR and REP-PCR also clearly separated the type strain from the Chilean strain...Continue Reading

Citations

Jan 17, 2014·Diseases of Aquatic Organisms·R Avendaño-HerreraA E Toranzo
Jun 16, 2016·Diseases of Aquatic Organisms·Pamela RuizRuben Avendaño-Herrera
May 31, 2019·Marine Drugs·Loredana StabiliAntonella Petrocelli
Apr 16, 2020·Journal of Fish Diseases·Macarena Echeverría-BugueñoRuben Avendaño-Herrera
Aug 17, 2019·Journal of Fish Diseases·Ruben Avendaño-HerreraRute Irgang

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