Halobacteriovorax isolated from marine water of the Adriatic sea, Italy, as an effective predator of Vibrio parahaemolyticus, non-O1/O139 V. cholerae, V. vulnificus

Journal of Applied Microbiology
Donatella OttavianiFrancesca Leoni


To detect marine Bdellovibrio and like organisms (BALOs) which are able to infect Vibrio parahaemolyticus from seawater of the Adriatic, Italy. To test, prey specificity and predation efficiency of our Halobacteriovorax isolate, named HBXCO1, towards 17 Vibrio and 7 non-Vibrio strains linked to the Adriatic sea, Italy. Double layer agar plating technique was used to enumerate BALOs and to evaluate their prey specificity and predation efficiency. Transmission electron microscopy and 16S rRNA analysis were used to identify them. Means of BALOs counts ranged from 5·0 PFU per ml (March 2017) to 98·6 PFU per ml (August 2016). HBXCO1 had the ability to attack all tested prey strains of V. parahaemolyticus, Vibrio cholerae non-O1/O139 and Vibrio vulnificus, but it did not prey on non-Vibrio strains and V. alginolyticus under the tested conditions. Bdellovibrio and like organisms capable of infecting pathogenic vibrios are naturally present in seawater of the Adriatic, Italy. Isolate HBXCO1 shows prey specificity preferentially for the Vibrio genus and high predatory efficiency towards a wide range of pathogenic strains. The public impact of V. parahaemolyticus, non-O1/O139 V. cholerae and V. vulnificus in bivalves is relevant and curr...Continue Reading


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Related Concepts

Interference, Bacterial
Vibrio cholerae
Vibrio parahaemolyticus
Water Microbiology
Vibrio vulnificus

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