Abstract
In this study we have demonstrated the presence of permeability factors (PF) in the extracellular products (ECP) of 16 strains of the bacterial fish pathogenYersinia ruckeri. The production and detection of these factors were dependent on the growth media and the ECP extraction procedure. The best results were obtained with a cellophane plate method and use of brain-heart infusion agar (BHIA) medium. The loss of necrotizing activity after heating the samples at 80°C for 15 min indicates the thermolabile nature of the toxin. In addition, this activity was not correlated with the production of hemolysins and cytotoxins by theY. ruckeri strains.
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Romalde, J.L., Santos, Y. & Toranzo, A.E. Presence of skin permeability factors in the extracellular products ofYersinia ruckeri . Current Microbiology 24, 263–267 (1992). https://doi.org/10.1007/BF01577330
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DOI: https://doi.org/10.1007/BF01577330