Pathogenic Aeromonas hydrophila serogroup O:14 and O:81 strains with an S layer

Article Abstract:

The first report of the presence of an S layer in pathogenic non-O:11 autoagglutinating Aeromonas isolates, which belong to serogroups O:14 and O:81, is presented. All S-layer-positive motile Aeromonas isolates of serogroups O:11, O:14 and O:81 (NIH system) investigated were autoagglutinating strains by precipitation after boiling, and so they mostly had the common phenotype SP- and PAB+ and it is concluded that precipitation after boiling is the proper marker to search for virulent and S-layer-positive motile Aeromonas strains from epizootic and clinical samples.

Genetic aspects, Bacteria, Pathogenic, Pathogenic bacteria, Microbiological research

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Complete type III secretion system of a mesophilic Aeromonas hydrophila strain

Article Abstract:

The existence and genetic organization of a functional type III secretion system in a mesophilic Aeromonas strain by initially using the Aeromonas hydrophila strain AH-3 is investigated. A defined insertion mutant in strain AH-3 shows reduced toxicity and virulence in comparison with the wild-type strain.

Bacterial genetics, Secretion

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Occurrence of drug-resistant bacteria in two European eel farms

Article Abstract:

The occurrence of strains that are resistant to various antimicrobials among heterotrophic bacteria, including human and fish pathogens was investigated in two freshwater eel farms. High levels of individual- and multiple-drug-resistant bacteria were detected.

Drug resistance in microorganisms, Microbial drug resistance, Bacteria, Heterotrophic, Heterotrophic bacteria

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