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Genotype distribution of Chinese Mycoplasma bovis isolates and their evolutionary relationship to strains from other countries.

Abstract：

:This study was undertaken to determine the genotypic distribution of Chinese M. bovis strains and their similarity to isolates from other countries. Two multilocus sequence typing (MLST) schemes (MLST-1 and MLST-2) and pulsed field gel electrophoresis (PFGE) were used to compare 44 Chinese strains and the M. bovis type strain PG45. The results showed a high genetic homogeneity of Chinese isolates; 43 of 44 (97.7%) Chinese isolates were identified as ST-10 and as ST-34 by MLST-1, while for MLST-2 42 of 44 (95.5%) were identified as ST-10 with the two remaining isolates of ST-32 and ST43. PFGE clustered 42 of 44 (95.5%) of the Chinese isolates into PT-I. The overall agreement rate between the three typing methods was 97.8% (95% CI:86.8-99.9%). The type strain PG45 was identified as a unique type by all three methods. When the MLST-2 scheme was further used to analyze 16 isolates of Australian and Israeli origin ST-10 was more dominant among Australian isolates (7/8), compared with those from Israel (3/8). The evolutionary relationship of the 60 isolates typed in this study assessed together with 206 additional isolates retrieved from pubmlst/mbovis database analyzed by geoBURST Minimum spanning tree (MST) confirmed that the Chinese, Israeli and Australian M. bovis isolates typed in this study that were predominantly ST-10, were clustered in CC3 with isolates originating from the USA. Our results suggest that ST-10 is an emerging clone of M. bovis population. We hypothesized that the widespread distribution of this type is a result of global livestock movements. These findings will help further the understanding of the global evolution of M. bovis and development of novel vaccines against M. bovis.

journal_name

Microb Pathog

journal_title

Microbial pathogenesis

authors

Menghwar H,He C,Zhang H,Zhao G,Zhu X,Khan FA,Faisal M,Rasheed MA,Zubair M,Memon AM,Ridley A,Robertson ID,Chen Y,Guo A

doi

10.1016/j.micpath.2017.08.029

subject

Has Abstract

pub_date

2017-10-01 00:00:00

pages

108-117

eissn

0882-4010

issn

1096-1208

pii

S0882-4010(17)30902-6

journal_volume

111

pub_type

杂志文章

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Genotype distribution of Chinese Mycoplasma bovis isolates and their evolutionary relationship to strains from other countries.