Vibrio cholerae: a fundamental model system for bacterial genetics and pathogenesis research

Abstract

Species of the Vibrio genus occupy diverse aquatic environments ranging from brackish water to warm equatorial seas to salty coastal regions. More than 80 species of Vibrio have been identified, many of them as pathogens of marine organisms, including fish, shellfish, and corals, causing disease and wreaking havoc on aquacultures and coral reefs. Moreover, many Vibrio species associate with and thrive on chitinous organisms abundant in the ocean. Among the many diverse Vibrio species, the most well-known and studied is Vibrio cholerae, discovered in the 19th century to cause cholera in humans when ingested. The V. cholerae field blossomed in the late 20th century, with studies broadly examining V. cholerae evolution as a human pathogen, natural competence, biofilm formation, and virulence mechanisms, including toxin biology and virulence gene regulation. This review discusses some of the historic discoveries of V. cholerae biology and ecology as one of the fundamental model systems of bacterial genetics and pathogenesis.

Keywords: Vibrio; Vibrio cholerae; genetic competence; pathogenesis; quorum sensing; toxins; virulence factors.

Fig 1

Timeline of major discoveries in Vibrio cholerae and cholera.