The rrn locus and gyrB genotyping confirm the existence of two clonal groups in strains of Yersinia enterocolitica subspecies palearctica biovar 1A

Eighty-one strains of Yersinia enterocolitica biovar 1A representing several serotypes isolated from India, France, Germany and the USA were analyzed using ribotyping, 16S–23S rDNA intergenic spacer length polymorphism analysis (PCR-ribotyping) and gyrB restriction fragment length polymorphism. Ribo...

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Bibliographic Details
Published in:Research in microbiology 2007-04, Vol.158 (3), p.236-243
Main Authors: Gulati, Pooja Sachdeva, Virdi, Jugsharan Singh
Format: Article
Language:English
Subjects:
Bacterial Proteins - genetics
Bacteriology
Biological and medical sciences
DNA Gyrase - genetics
DNA, Bacterial - chemistry
DNA, Bacterial - genetics
DNA, Ribosomal - chemistry
DNA, Ribosomal - genetics
Fundamental and applied biological sciences. Psychology
Genotype
gyrB RFLP
Microbiology
Miscellaneous
Molecular Sequence Data
PCR-ribotyping
Polymerase Chain Reaction
Polymorphism, Restriction Fragment Length
Ribotyping - methods
RNA, Ribosomal, 16S - genetics
RNA, Ribosomal, 23S - genetics
Sequence Analysis, DNA
Yersinia enterocolitica
Yersinia enterocolitica - classification
Yersinia enterocolitica - genetics
Yersinia enterocolitica biovar 1A
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Summary:Eighty-one strains of Yersinia enterocolitica biovar 1A representing several serotypes isolated from India, France, Germany and the USA were analyzed using ribotyping, 16S–23S rDNA intergenic spacer length polymorphism analysis (PCR-ribotyping) and gyrB restriction fragment length polymorphism. Ribotyping with BglI, NciI and EcoRV distinguished 81 strains into 4, 3 and 2 ribotypes respectively. BglI- NciI combination gave the highest Simpson's diversity index (DI = 0.43). Strains with identical ribotypes were further differentiated by PCR-ribotyping. The combination of BglI- NciI ribotyping with PCR ribotyping increased DI to 0.72. This suggested that the combination of the two may be used for molecular epidemiological studies of Y. enterocolitica biovar 1A. This approach clearly resolved the strains into two clonal groups, each comprising strains isolated from humans, swine, pork and wastewater. PCR-RFLP of the gyrB gene using three enzymes ( AluI, MspI and HinfI) distinguished strains into seven types and confirmed the existence of two clonal groups. Thus, assessment of heterogeneity based on chromosomal restriction analysis (ribotyping), rRNA spacer length polymorphism (PCR-ribotyping) and gyrB gene analysis were in concordance and provided unequivocal evidence for the presence of two groups amongst strains of Y. enterocolitica biovar 1A despite their diverse geographic origins. These data also grouped clinical and non-clinical strains of serotype O:6,30–6,31 into discrete subgroups.
ISSN:0923-2508
1769-7123
DOI:10.1016/j.resmic.2006.11.011