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KMID : 1094020060230040405
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Journal of Veterinary Clinics
2006 Volume.23 No. 4 p.405 ~ p.410
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Molecular Phylogenetic Classification of Dermatophytes Isolated from Dogs and Cats
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Kim Doo
Jeoung Seok-Young
Ahn So-Jeo
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Abstract
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Using internal transcribed spacer 1 (ITS1) region ribosomal DNA sequences from 9 strains of Microsporum canis and 5 strains of Microsporum gypseum isolated from dogs and a cat with dermatophytosis, we demonstrated the mutual phylogenetic relationship of these strains. Nucleotide sequence analysis of the ITS 1 gene fragments from the 9 strains of M canis had the 100% nucleotide sequence similarities and the 5 strains of M gypseum also had the 100% nucleotide sequence similarities. The phylogenetic analysis of the nucleotide sequences of the 9 strains of M canis formed a nested cluster with the reference strains of M canis originating from USA, Australia, Japan, and Europe. M canis were genetically distinct from the other reference strains of Microsporum spp, but M distortum, M equinum, and M. ferrugineum were genetically very close to M canis. M gypseum from a cluster in the phylogenetic tree with M canis as an outgroup. The molecular analysis of ITS 1 genes provided the useful information for the identification of these microsporum species and the understanding of their relationship.
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KEYWORD
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Microsporum spp, ITS1, phylogeny, dog and cat
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