Investigación publicada en International Journal of Systematic and Evolutionary Microbiology

1 de septiembre de 2015

Four isolates of an unknown Gram-positive, catalase-negative coccus-shaped organism isolated from pharynx of four wild rabbits, were characterized by phenotypic and molecular genetic methods. The microorganisms were tentatively assigned to the genus Streptococcus based on their cellular morphological and biochemical criteria, although the organisms did not appear to correspond to any recognized species. Comparative 16S rRNA gene sequencing confirmed their identification as members of the genus Streptococcus, being phylogenetically closet related to Streptococcus porcorum 682-03T (96.9 % 16S rRNA gene sequence similarity). The rpoB and sodA sequence analysis showed divergence values between the novel isolate and S. porcorum 682-03T, the closely 16S rRNA phylogenetic relative, of 18.1% and 23.9%, respectively. The novel bacterial isolate could be distinguished from the type strain of S. porcorum by several biochemical characteristics, such as the production of glycyl-tryptophan arylamidase and α-chymotrypsin and non acidification of different sugars. Based on both phenotypic and phylogenetic findings, it is proposed that the unknown bacterium be as assigned to a novel species of the genus Streptococcus, Streptococcus pharyngis sp. nov. The type strain is DICM10-00796BT (=CECT 8754T=CCUG 66496T)

Vela AI., Casas-Diaz E., Lavin S., Dominguez L. y Fernandez-Garayzabal JF..

Streptococcus pharyngis sp. nov., a new streptococcal species isolated from the respiratory tract of wild rabbits

Streptococcus pharyngis sp. nov., a new streptococcal species isolated from the respiratory tract of wild rabbits

	Servicio de Identificación y Caracterización Microbiana (ICM). Centro de Vigilancia Sanitaria Veterinaria (VISAVET). Universidad Complutense (UCM).
	Servicio de Ecopatología de Fauna Salvaje (SEFaS). Universitat Autònoma de Barcelona (UAB).
	Departamento de Medicina y Cirurgia Animal. Facultad de Veterinaria. Universitat Autònoma de Barcelona (UAB).
	Departamento de Sanidad Animal. Facultad de Veterinaria. Universidad Complutense (UCM).