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    Genome analysis of Mycoplasma synoviae strain MS-H, the most common M. synoviae strain with a worldwide distribution

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    Author
    Zhu, L; Shahid, MA; Markham, J; Browning, GF; Noormohammadi, AH; Marenda, MS
    Date
    2018-02-02
    Source Title
    BMC Genomics
    Publisher
    BioMed Central
    University of Melbourne Author/s
    Marenda, Marc; Zhu, Ling; Browning, Glenn; Hadjinoormohammadi, Amir; Markham, John
    Affiliation
    Veterinary Biosciences
    Electrical and Electronic Engineering
    Metadata
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    Document Type
    Journal Article
    Citations
    Zhu, L., Shahid, M. A., Markham, J., Browning, G. F., Noormohammadi, A. H. & Marenda, M. S. (2018). Genome analysis of Mycoplasma synoviae strain MS-H, the most common M. synoviae strain with a worldwide distribution. BMC Genomics, 19 (1), https://doi.org/10.1186/s12864-018-4501-8.
    Access Status
    Open Access
    URI
    http://hdl.handle.net/11343/253184
    DOI
    10.1186/s12864-018-4501-8
    Abstract
    Background The bacterial pathogen Mycoplasma synoviae can cause subclinical respiratory disease, synovitis, airsacculitis and reproductive tract disease in poultry and is a major cause of economic loss worldwide. The M. synoviae strain MS-H was developed by chemical mutagenesis of an Australian isolate and has been used as a live attenuated vaccine in many countries over the past two decades. As a result it may now be the most prevalent strain of M. synoviae globally. Differentiation of the MS-H vaccine from local field strains is important for epidemiological investigations and is often required for registration of the vaccine. Results The complete genomic sequence of the MS-H strain was determined using a combination of Illumina and Nanopore methods and compared to WVU-1853, the M. synoviae type strain isolated in the USA 30 years before the parent strain of MS-H, and MS53, a more recent isolate from Brazil. The vaccine strain genome had a slightly larger number of pseudogenes than the two other strains and contained a unique 55 kb chromosomal inversion partially affecting a putative genomic island. Variations in gene content were also noted, including a deoxyribose-phosphate aldolase (deoC) fragment and an ATP-dependent DNA helicase gene found only in MS-H. Some of these sequences may have been acquired horizontally from other avian mycoplasma species. Conclusions MS-H was somewhat more similar to WVU-1853 than to MS53. The genome sequence of MS-H will enable identification of vaccine-specific genetic markers for use as diagnostic and epidemiological tools to better control M. synoviae.

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