Genomic dissection of the Vibrio cholerae O-serogroup global reference strains: reassessing our view of diversity and plasticity between two chromosomes

Author:

Murase Kazunori12,Arakawa Eiji3,Izumiya Hidemasa3,Iguchi Atsushi4,Takemura Taichiro5,Kikuchi Taisei61,Nakagawa Ichiro2,Thomson Nicholas R.78,Ohnishi Makoto3,Morita Masatomo3ORCID

Affiliation:

1. Department of Infectious Diseases, Faculty of Medicine, University of Miyazaki, Miyazaki, Japan

2. Department of Microbiology, Graduate School of Medicine, Kyoto University, Kyoto, Japan

3. Department of Bacteriology I, National Institute of Infectious Diseases, Tokyo, Japan

4. Department of Animal and Grassland Sciences, Faculty of Agriculture, University of Miyazaki, Japan

5. Vietnam Research Station, Institute of Tropical Medicine, Nagasaki University, Nagasaki, Japan

6. Department of Integrated Biosciences, Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa, Japan

7. London School of Hygiene and Tropical Medicine, London, UK

8. Wellcome Trust Sanger Institute, Hinxton, UK

Abstract

Approximately 200 O-serogroups of Vibrio cholerae have already been identified; however, only 2 serogroups, O1 and O139, are strongly related to pandemic cholera. The study of non-O1 and non-O139 strains has hitherto been limited. Nevertheless, there are other clinically and epidemiologically important serogroups causing outbreaks with cholera-like disease. Here, we report a comprehensive genome analysis of the whole set of V. cholerae O-serogroup reference strains to provide an overview of this important bacterial pathogen. It revealed structural diversity of the O-antigen biosynthesis gene clusters located at specific loci on chromosome 1 and 16 pairs of strains with almost identical O-antigen biosynthetic gene clusters but differing in serological patterns. This might be due to the presence of O-antigen biosynthesis-related genes at secondary loci on chromosome 2.

Publisher

Microbiology Society

Subject

General Medicine

Reference33 articles.

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