Growth arrest and a persister state enable resistance to osmotic shock and facilitate dissemination of Vibrio cholerae

Silva-Valenzuela, Cecilia A.; Lazinski, David W.; Kahne, Shoshanna C.; Nguyen, Y.; Molina-Quiroz, Roberto C.; Camilli, Andrew


Vibrio cholerae is a water-borne bacterial pathogen and causative agent of cholera. Although V. cholerae is a halophile, it can survive in fresh water, and this has a major role in cholera epidemics through consumption of contaminated water and subsequent fecal-oral spread. After dissemination from humans back into fresh water, V. cholerae encounters limited nutrient availability and an abrupt drop in conductivity but little is known about how V. cholerae adapts to, and survives in this environment. In this work, by abolishing or altering the expression of V. cholerae genes in a high-throughput manner, we observed that many osmotic shock tolerant mutants exhibited slowed or arrested growth, and/or generated a higher proportion of persister cells. In addition, we show that growth-arrested V. cholerae, including a persister subpopulation, are generated during infection of the intestinal tract and together allow for the successful dissemination to fresh water. Our results suggest that growth-arrested and persister subpopulations enable survival of V. cholerae upon shedding to the aquatic environment.

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Título según WOS: ID WOS:000415947900008 Not found in local WOS DB
Título de la Revista: ISME JOURNAL
Volumen: 11
Número: 12
Fecha de publicación: 2017
Página de inicio: 2718
Página final: 2728


Notas: ISI