Tülay AKAYLI, Özgür ÇANAK, Çiğdem ÜRKÜ
The aim of this study was to determine the lipopoly-saccharide (LPS) profiles of pathogenic Gram-negative bacteria recovered from cultured rainbow trout (Oncorhynchus mykiss) in different regions of Turkey. For this purpose, LPS samples were obtained from 10 bacterial isolates of Vibrio anguillarum, Aer-omonas hydrophila, A. schubertii, Pseudomonas fluo-rescens and Yersinia ruckeri recovered from diseased fish. LPS profiles were determined by using Sodium Dodecyl Sulphate Polyacrilamide Gel Electrophoresis (SDS-PAGE) and silver-nitrate staining method. Re-sults of the study demonstrated that LPS profiling is a useful tool for characterization of these bacteria and geographic discrimination of their isolates.
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