Open AccessStreptococcus fryi sp. nov., a novel species with Lancefield group M antigens
Author(s) -
Tomida Junko,
Sauer Susanne,
Morita Yuji,
Ezaki Takayuki,
Kawamura Yoshiaki
Publication year - 2011
Publication title -
fems microbiology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.899
H-Index - 151
eISSN - 1574-6968
pISSN - 0378-1097
DOI - 10.1111/j.1574-6968.2010.02148.x
Subject(s) - microbiology and biotechnology , streptococcus , antigen , biology , streptococcaceae , bacteria , genetics , antibiotics
The taxonomic characteristics of β‐hemolytic streptococcal strains that reacted with Lancefield group M antisera were investigated. Group M streptococci have not been proposed as a species to date. Four strains of the group M streptococci isolated from dog were located within the pyogenic group of the genus Streptococcus on 16S rRNA gene‐based phylogenetic analysis; the group M strains were located a short distance away from all other members of the group. The homology values of 16S rRNA gene sequences between group M strains and all other streptococci were<95.6%. Group M strains exhibited low levels of DNA–DNA homology to other streptococcal species. Some biochemical traits, such as β‐galactosidase activity and acid production from glycogen, could distinguish these group M strains from other closely related species. Thus, these strains are proposed to constitute a new species – Streptococcus fryi sp. nov. The type strain is PAGU 653 T (=NCTC 10235 T =JCM 16387 T ).