| Taxonomy Citation ID | Reference | ||||
|---|---|---|---|---|---|
| 7227 |
Brisse S,
Verhoef J,
( 2001 ) Phylogenetic diversity of Klebsiella pneumoniae and Klebsiella oxytoca clinical isolates revealed by randomly amplified polymorphic DNA, gyrA and parC genes sequencing and automated ribotyping. PMID : 11411715 DOI : 10.1099/00207713-51-3-915 DOI : 10.1099/00207713-51-3-915 Abstract >>
The infra-specific phylogenetic diversity and genetic structure of both Klebsiella pneumoniae and Klebsiella oxytoca was investigated using a combination of randomly amplified polymorphic DNA (RAPD) analysis, sequencing of gyrA and parC genes, and automated ribotyping. After RAPD analysis with four independent primers of 120 clinical isolates collected from 22 European hospitals in 13 countries, K. pneumoniae isolates fell into three clusters and K. oxytoca isolates fell into two clusters, while Klebsiella planticola isolates formed a sixth cluster. Each cluster was geographically widespread. K. pneumoniae cluster I (KpI) accounted for 80% of the isolates of this species and included reference strains of the three subspecies K. pneumoniae subsp. pneumoniae, K. pneumoniae subsp. ozaenae and K. pneumoniae subsp. rhinoscleromatis. Clusters KpII and KpIII were equally represented, as were the two K. oxytoca clusters. Individualization of each cluster was fully confirmed by phylogenetic analysis of gyrA and parC gene sequences. In addition, sequence data supported the evolutionary separation of K. pneumoniae from a phylogenetic group including K. oxytoca, Klebsiella terrigena, K. planticola and Klebsiella ornithinolytica. Automated ribotyping using Mlu I appeared suitable for identification of each Klebsiella cluster. The adonitol fermentation test was found to be useful for cluster identification in K. pneumoniae, since it was negative in all strains of clusters KpIII and in some KpII strains, but always positive in cluster KpI. The usefulness of gyrA and parC sequence data for population genetics and cluster identification in bacteria was demonstrated, even for the phylogenetic positioning of quinolone-resistant isolates.
|
7219 |
Drancourt M,
Bollet C,
Carta A,
Rousselier P,
( 2001 ) Phylogenetic analyses of Klebsiella species delineate Klebsiella and Raoultella gen. nov., with description of Raoultella ornithinolytica comb. nov., Raoultella terrigena comb. nov. and Raoultella planticola comb. nov. PMID : 11411716 DOI : 10.1099/00207713-51-3-925 DOI : 10.1099/00207713-51-3-925 Abstract >>
The phylogenetic relationships of the type strains of 9 Klebsiella species and 20 species from 11 genera of the family Enterobacteriaceae were investigated by performing a comparative analysis of the sequences of the 16S rRNA and rpoB genes. The sequence data were phylogenetically analysed by the neighbourjoining and parsimony methods. The phylogenetic inference of the sequence comparison confirmed that the genus Klebsiella is heterogeneous and composed of species which form three clusters that also included members of other genera, including Enterobacter aerogenes, Erwinia clusters I and II and Tatumella. Cluster I contained the type strains of Klebsiella pneumoniae subsp. pneumoniae, Klebsiella pneumoniae subsp. rhinoscleromatis and Klebsiella pneumoniae subsp. ozaenae. Cluster II contained Klebsiella ornithinolytica, Klebsiella planticola, Klebsiella trevisanii and Klebsiella terrigena, organisms characterized by growth at 10 degrees C and utilization of L-sorbose as carbon source. Cluster III contained Klebsiella oxytoca. The data from the sequence analyses along with previously reported biochemical and DNA-DNA hybridization data support the division of the genus Klebsiella into two genera and one genogroup. The name Raoultella is proposed as a genus name for species of cluster II and emended definitions of Klebsiella species are proposed.
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| 6066 | IIzard, D., Ferragut, C., Gavini, F., Kersters, K., De Ley, J., and Leclerc, H. "Klebsiella terrigena, a new species from soil and water." Int. J. Syst. Bacteriol. (1981) 31:116-127. [No PubMed record available.] | ||||
| 4068 | Moore, W.E.C., Cato, E.P., and Moore, L.V.H. "Index of the bacterial and yeast nomenclatural changes published in the International Journal of Systematic Bacteriology since the 1980 Approved Lists of bacterial names (1 January 1980 to 1 January 1985)." Int. J. Syst. Bacteriol. (1985) 35:382-407. [No PubMed record available.] |
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