Identification of chemotaxis operon cheYZA and cheA gene expression under stressful conditions in Piscirickettsia salmonis.
Microb Pathog
; 107: 436-441, 2017 Jun.
Article
en En
| MEDLINE
| ID: mdl-28438636
ABSTRACT
Piscirickettsia salmonis is the etiological agent of piscirickettsiosis, which, as the main systemic disease in the Chilean salmon industry, causes significant economic losses. This bacterium can produce biofilm as a persistence and survival strategy in adverse conditions. In other bacteria, cheA is a key gene for modulating the onset of bacterial chemotaxis, as well as having a secondary role in biofilm production. Notwithstanding this association, the potential relationships between biofilm formation and genes involved in P. salmonis chemotaxis are poorly understood. This study aimed to determine P. salmonis cheA gene expression when grown in different culture media known to induce biofilm production. Piscirickettsia salmonis AUSTRAL-005 produced moderate/high biofilm levels after 144 h of incubation in the AUSTRAL-SRS and marine broths. In contrast, LF-89 biofilm production was weak/nonexistent in the aforementioned broths. Both assessed P. salmonis strains contained the cheYZA operon. Additionally, AUSTRAL-005 cheA transcripts increased in both culture media. In conclusion, these results suggest potential relationships between biofilm formation and genes related to chemotaxis in the fish pathogen P. salmonis.
Palabras clave
Texto completo:
1
Banco de datos:
MEDLINE
Asunto principal:
Operón
/
Regulación Bacteriana de la Expresión Génica
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Quimiotaxis
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Piscirickettsia
Tipo de estudio:
Diagnostic_studies
Límite:
Animals
Idioma:
En
Año:
2017
Tipo del documento:
Article