当前位置： SCI文献检索 > RESEARCH IN MICROBIOLOGY期刊下所有文献 > The rrn locus and gyrB genotyping confirm the existence of two clonal groups in strains of Yersinia enterocolitica subspecies palearctica biovar 1A.

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

Abstract：

: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.

journal_name

Res Microbiol

journal_title

Research in microbiology

authors

Gulati PS,Virdi JS

doi

10.1016/j.resmic.2006.11.011

subject

Has Abstract

pub_date

2007-04-01 00:00:00

pages

236-43

issue

3

eissn

0923-2508

issn

1769-7123

pii

S0923-2508(07)00009-5

journal_volume

158

pub_type

杂志文章

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