Differences in carbon metabolic capacity fuel co-existence and plasmid transfer between Salmonella strains in the mouse gut.
Cell Host Microbe
; 31(7): 1140-1153.e3, 2023 07 12.
Article
en En
| MEDLINE
| ID: mdl-37348498
ABSTRACT
Antibiotic resistance plasmids can be disseminated between different Enterobacteriaceae in the gut. Here, we investigate how closely related Enterobacteriaceae populations with similar nutrient needs can co-bloom in the same gut and thereby facilitate plasmid transfer. Using different strains of Salmonella Typhimurium (S.Tm SL1344 and ATCC14028) and mouse models of Salmonellosis, we show that the bloom of one strain (i.e., recipient) from very low numbers in a gut pre-occupied by the other strain (i.e., donor) depends on strain-specific utilization of a distinct carbon source, galactitol or arabinose. Galactitol-dependent growth of the recipient S.Tm strain promotes plasmid transfer between non-isogenic strains and between E. coli and S.Tm. In mice stably colonized by a defined microbiota (OligoMM12), galactitol supplementation similarly facilitates co-existence of two S.Tm strains and promotes plasmid transfer. Our work reveals a metabolic strategy used by Enterobacteriaceae to expand in a pre-occupied gut and provides promising therapeutic targets for resistance plasmids spread.
Palabras clave
Texto completo:
1
Banco de datos:
MEDLINE
Asunto principal:
Infecciones por Salmonella
/
Escherichia coli
Límite:
Animals
Idioma:
En
Revista:
Cell Host Microbe
Asunto de la revista:
MICROBIOLOGIA
Año:
2023
Tipo del documento:
Article