High genetic diversity of Vibrio parahaemolyticus isolated from tidal water and mud of southern coast of South Korea
| Autor: | Dukki Han, Hansub Shin, Hor-Gil Hur, Tatsuya Unno, Doris Y W Di |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
0301 basic medicine
Serotype Veterinary medicine Genotype 030106 microbiology Ceftazidime Biology Serogroup Applied Microbiology and Biotechnology Microbiology law.invention 03 medical and health sciences law Drug Resistance Bacterial Republic of Korea medicine Seawater Polymerase chain reaction Phylogeny Genetic diversity Ecology Sulfamethoxazole Vibrio parahaemolyticus Genetic Variation biology.organism_classification Anti-Bacterial Agents 030104 developmental biology DNA profiling Seasons medicine.drug |
| Zdroj: | FEMS microbiology ecology. 95(3) |
| ISSN: | 1574-6941 |
| Popis: | A horizontal, fluorophore-enhanced, repetitive extragenic palindromic-polymerase chain reaction (rep-PCR) DNA fingerprinting technique was adapted to examine the genotypic richness and source differentiation of Vibrio parahaemolyticus (n = 1749) isolated from tidal water and mud of southern coast of South Korea. The number of unique genotypes observed from June (163, 51.9%), September (307, 63.9%), December (205, 73.8%) and February (136, 74.7%), indicating a high degree of genetic diversity. Contrary, lower genetic diversity was detected in April (99, 46.8%), including predominant genotypes comprised >30 V. parahaemolyticus isolates. Jackknife analysis indicated that 65.1% tidal water isolates and 87.1% mud isolates were correctly assigned to their source groups. Sixty-nine isolates of pathogenic V. parahaemolyticus were clustered into two groups, separated by sampling month, source of isolation and serogroups. Serotypes O1, O4, O5, O10/O12 and O11 were the dominant serovariants, while serotypes O3/O13 were highly detected in April where there were no pathogenic V. parahaemolyticus isolates. Most of the V. parahaemolyticus isolates were resistant to ampicillin, ceftazidime and sulfamethoxazole. Interestingly, four V. parahaemolyticus isolates resistant to carbepenem did not contain the known carbapenemase-encoding gene, but possess an extended-spectrum β-lactamase blaTEM. |
| Databáze: | OpenAIRE |
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