Data/hora: 11/06/2024 05:20:22

Provedor de dados: 	65	
País: 	Brazil	
Título: 	Quorum sensing in Enterococcus faecium, Enterococcus faecalis and Bacillus cereus strains isolated from ricotta processing	
Autores: 	Fernandes,Meg da Silva; Esper,Luciana Maria Ramires; Kabuki,Dirce Yorika; Kuaye,Arnaldo Yoshiteru.	
Data: 	2018-01-01	
Ano: 	2018	
Palavras-chave: 	LuxS; AI-2; Vibrio harveyi; Bioluminescence; Enterococcus spp.; Bacillus cereus.	
Resumo: 	ABSTRACT: The quorum sensing phenomenon is a process of intra- and inter-species microbial communication involving the production and detection of extracellular signaling molecules. The autoinducer AI-2 has been proposed to serve as a ‘universal signal’ for interspecies communication. This study aimed to evaluate the capability of Enterococcus faecium, Enterococcus faecalis, and Bacillus cereus strains isolated from ricotta processing to produce quorum sensing signalling molecules (AI-2). The strains were evaluated for the presence of the luxS gene using the polymerase chain reaction. AI-2 quorum sensing signalling molecules were measured in relative light units (RLUs) using a luminometer. A total of 74% of E. faecium, 91% of E. faecalis, and 95% of B. cereus isolates were positive for luxS gene. In addition, the induced bioluminescence in Vibrio harveyi BB170 was observed in all strains, indicating the presence of the AI-2 autoinducer.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782018000200751	
Editor: 	Universidade Federal de Santa Maria	
Relação: 	10.1590/0103-8478cr20161111	
Formato: 	text/html	
Fonte: 	Ciência Rural  v.48 n.2 2018	
Fonte: 	info:eu-repo/semantics/openAccess