Phylogenetic relationship of Pasteurella pneumotropica isolates from laboratory rodents based on 16S rDNA sequence |
| |
| Authors: | Sasaki Hiraku Kawamoto Eiichi Ueshiba Hidehiro Amao Hiromi Sawada Takuo |
| |
| Institution: | Animal Research Center, Tokyo Medical University, Japan. |
| |
| Abstract: | A 1344 bp fragment of the 16S ribosomal DNA (rDNA) sequence was used to determine the genetic relationship of Pasteurella pneumotropica isolates from laboratory rodents. A total of 30 nucleotide sequences of P. pneumotropica, including 24 wild strains, 3 reference strains, and 3 nucleotide sequences deposited in GenBank, were examined for heterogeneity of their 16S rDNA sequences. Phylogenetic analysis based on 16S rDNA sequence discriminated 5 types of branching lineages. Of these 5 types, 3 types had significant associations with mice or rats, and 2 had significant associations with the beta-hemolytic phenotype. These results suggest that 16S rDNA sequencing of P. pneumotropica isolates demonstrates genetic heterogeneity and phylogenetic discrimination in terms of their hemolytic phenotype and host associations. |
| |
| Keywords: | |
| 本文献已被 PubMed 等数据库收录！ |
|
