TY - JOUR
T1 - Phylogenetic analysis of the genera Proteus, Morganella and Providencia by comparison of rpoB sequences of type and clinical strains suggests the classification of Proteus myxofaciens in a new genus Cosenzaea gen. nov., as Cosenzaea myxofaciens comb. nov.
AU - Giammanco, Giovanni
AU - Giammanco, Giuseppe
AU - Giammanco, Giuseppe
AU - Pignato, Sarina
AU - Grimont, Francine
AU - Grimont, Patrick A. D.
AU - Lefevre, Martine
PY - 2011
Y1 - 2011
N2 - Phylogenetic analysis of partial rpoB gene sequences of type and clinical strains belonging to different 16S rRNA gene-fingerprinting ribogroups within 11 species of enterobacteria of the genera Proteus, Morganella and Providencia was performed and allowed the definition of rpoB clades, supported by high bootstrap values and confirmed by ≥2.5 % nucleotide divergence. None of the resulting clades included strains belonging to different species and the majority of the species were confirmed as discrete and homogeneous. However, more than one distinct rpoB clade could be defined among strains belonging to the species Proteus vulgaris (two clades), Providencia alcalifaciens (two clades) and Providencia rettgeri (three clades), suggesting that some strains represent novel species according to the genotypes outlined by rpoB gene sequence analysis. Percentage differences between the rpoB gene sequence of the type strain of Proteus myxofaciens and other members of the same genus (17.3-18.9 %) were similar to those calculated amongst strains of the genus Providencia (16.4-18.7 %), suggesting a genetic distance at the genus-level between Proteus myxofaciens and the rest of the Proteus-Providencia group. Proteus myxofaciens therefore represents a member of a new genus, for which the name Cosenzaea gen. nov., is proposed.
AB - Phylogenetic analysis of partial rpoB gene sequences of type and clinical strains belonging to different 16S rRNA gene-fingerprinting ribogroups within 11 species of enterobacteria of the genera Proteus, Morganella and Providencia was performed and allowed the definition of rpoB clades, supported by high bootstrap values and confirmed by ≥2.5 % nucleotide divergence. None of the resulting clades included strains belonging to different species and the majority of the species were confirmed as discrete and homogeneous. However, more than one distinct rpoB clade could be defined among strains belonging to the species Proteus vulgaris (two clades), Providencia alcalifaciens (two clades) and Providencia rettgeri (three clades), suggesting that some strains represent novel species according to the genotypes outlined by rpoB gene sequence analysis. Percentage differences between the rpoB gene sequence of the type strain of Proteus myxofaciens and other members of the same genus (17.3-18.9 %) were similar to those calculated amongst strains of the genus Providencia (16.4-18.7 %), suggesting a genetic distance at the genus-level between Proteus myxofaciens and the rest of the Proteus-Providencia group. Proteus myxofaciens therefore represents a member of a new genus, for which the name Cosenzaea gen. nov., is proposed.
UR - http://hdl.handle.net/10447/61098
M3 - Article
VL - 61
SP - 1638
EP - 1644
JO - International Journal of Systematic and Evolutionary Microbiology
JF - International Journal of Systematic and Evolutionary Microbiology
SN - 1466-5026
ER -