First record of isolation and characterization of Vibrio sinaloensis from diseased orange-spotted grouper Epinephelus coioides

A dominant bacterium, ZYL-12, isolated from the liver of a diseased orange-spotted grouper Epinephelus coioides, was identified as Vibrio sinaloensis, based on phenotypic and molecular analysis. The median lethal dosage of ZYL-12 was calculated as 1.6 × 105 CFU g-1 fish weight. The infection experiment indicated that ZYL-12 caused noticeable histological lesions to the liver, kidney and spleen of the fish. Growth characteristics showed that ZYL-12 possessed strong environmental adaptability. This note is the first report about the pathogenicity of V. sinaloensis isolated from diseased fish.

Whole-genome Sequencing of Vibrio sinaloensis T47, a Tropical Marine Isolate with Quorum Sensing Properties

A large number of Vibrio sp. thrive in the marine environment and they are notable to cause food borne infection associated with undercooked seafood. In this study, we report the whole genome sequence of Vibrio sinaloensis T47 which was isolated from coastal marine water in Morib Beach, Hulu Selangor. The genome is made up of approximately 4.59 Mbp with 80 contigs and 46% G+C content. From the annotated genome, genes associated with quorum sensing (QS) were identified. This research provides a genetic basis for better understanding of QS pathway which contributes to the physiological traits of strain T47 to thrive in the marine environment.