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Clinical Veterinary Microbiology

Multiple-Locus Variable-Number Tandem-Repeat Analysis of the Swine Dysentery Pathogen, Brachyspira hyodysenteriae

Álvaro Hidalgo, Ana Carvajal, Tom La, Germán Naharro, Pedro Rubio, Nyree D. Phillips, David J. Hampson
Álvaro Hidalgo
1Department of Animal Health, Faculty of Veterinary Science, University of León, León 24071, Spain
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  • For correspondence: alvaro.hidalgo@unileon.es
Ana Carvajal
1Department of Animal Health, Faculty of Veterinary Science, University of León, León 24071, Spain
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Tom La
2Animal Research Institute, School of Veterinary and Biomedical Science, Murdoch University, Murdoch, Western Australia 6150, Australia
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Germán Naharro
1Department of Animal Health, Faculty of Veterinary Science, University of León, León 24071, Spain
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Pedro Rubio
1Department of Animal Health, Faculty of Veterinary Science, University of León, León 24071, Spain
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Nyree D. Phillips
2Animal Research Institute, School of Veterinary and Biomedical Science, Murdoch University, Murdoch, Western Australia 6150, Australia
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David J. Hampson
2Animal Research Institute, School of Veterinary and Biomedical Science, Murdoch University, Murdoch, Western Australia 6150, Australia
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DOI: 10.1128/JCM.00348-10
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  • FIG. 1.
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    FIG. 1.

    Dendrogram of the 44 B. hyodysenteriae MLVA types found in the present study and clustered using UPGMA. Roman numerals I to VI indicate clonal complexes defined at the single-locus variant level. The scale bar represents genetic distance as the absolute number of differences in marker alleles among genotypes. Bootstrap values of ≥40% are shown.

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    FIG. 2.

    MLVA types (circled) and relationships found among them according to the goeBURST algorithm. Solid lines show the single-locus variant level, dashed lines show the double-locus variant level, and dotted lines show the triple-locus variant level. Groups at the single-locus variant level are indicated by roman numerals I to VI.

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  • TABLE 1.

    Primers and thermocycling programs used for MLVA of B. hyodysenteriae

    LocusPrimer direction,a sequence (5′→3′)Thermocycling programb
    Bhyo_6F, AAATATAACTCATATTCATAACAAG30 × (94°C for 20 s, 52°C for 20 s, 72°C for 30 s), 72°C for 5 min
    R, AGAGAACTTCAAAAAACTTC
    Bhyo_7F, AAGTAATAAATTAAAAAATCTCTAGGGTGG30 × (94°C for 20 s, 59.5°C for 20 s, 72°C for 30 s), 72°C for 5 min
    R, GGTTTGGTAGAACAATCTGC
    Bhyo_12F, CGTATGATTATTTTACTTGTCAG30 × (94°C for 30 s, 59°C for 30 s, 74°C for 40 s)
    R, TTTTATTACAGCAACTTTACTC
    Bhyo_17F, TTTTTGCCATAAATATCTCTC30 × (94°C for 30 s, 59°C for 30 s, 74°C for 40 s)
    R, GAAATGCCGTCCTTCTTAG
    Bhyo_21F, AAAATAATGATGAAGTATCTAATG30 × (94°C for 20 s, 52°C for 20 s, 72°C for 30 s), 72°C for 5 min
    R, AAGTATCAGGTAAAGGTAAATC
    Bhyo_22F, AGATTAAAAACTGACGGAG30 × (94°C for 30 s, 55°C for 30 s, 72°C for 60 s), 72°C for 5 min
    R, AGCACAAGAACCTTCAAAC
    Bhyo_10F, CTCTCTTTTATATTTTTTATTATAGTTG30 × (94°C for 30 s, 55°C for 30 s, 72°C for 40 s), 72°C for 5 min
    R, TTGATGAAATTAGACCATTC
    Bhyo_23F, CACCCTTTAGACTTATTATTTTATTTTG30 × (94°C for 30 s, 55°C for 30 s, 72°C for 40 s), 72°C for 5 min
    R, TTGTTCTGCGTGCGTGTAG
    • ↵ a F, forward; R, reverse.

    • ↵ b Thermocycling programs included a first step of 5 min at 95°C and 30 cycles under the conditions show in parentheses.

  • TABLE 2.

    Features of the loci included in the MLVA

    LocusSize (bp) of: Positiona
    RepeatFlanking region
    Bhyo_6156781236667-1237672
    Bhyo_71351771818959-1819765
    Bhyo_10111881754196-1755095
    Bhyo_12105592949083-2949421
    Bhyo_17761751690628-1691034
    Bhyo_21331951396843-1397034
    Bhyo_22301532597474-2597543
    Bhyo_23261021838685-1838736
    • ↵ a Location of the VNTR loci in the chromosome of the reference strain B. hyodysenteriae WA1R.

Additional Files

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  • Supplemental material

    Files in this Data Supplement:

    • Supplemental file 1 - Table S1 (Descriptions of the 174 B. hyodysenteriae isolates and strains used in the study)
      Zipped MS Word document, 21K.
    • Supplemental file 2 - Table S2 (The MLVA type definitions used and their frequencies)
      Zipped MS Word document, 8K.
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Multiple-Locus Variable-Number Tandem-Repeat Analysis of the Swine Dysentery Pathogen, Brachyspira hyodysenteriae
Álvaro Hidalgo, Ana Carvajal, Tom La, Germán Naharro, Pedro Rubio, Nyree D. Phillips, David J. Hampson
Journal of Clinical Microbiology Jul 2010, 48 (8) 2859-2865; DOI: 10.1128/JCM.00348-10

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Multiple-Locus Variable-Number Tandem-Repeat Analysis of the Swine Dysentery Pathogen, Brachyspira hyodysenteriae
Álvaro Hidalgo, Ana Carvajal, Tom La, Germán Naharro, Pedro Rubio, Nyree D. Phillips, David J. Hampson
Journal of Clinical Microbiology Jul 2010, 48 (8) 2859-2865; DOI: 10.1128/JCM.00348-10
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KEYWORDS

Bacterial Typing Techniques
Brachyspira hyodysenteriae
dysentery
Gram-Negative Bacterial Infections
Minisatellite Repeats
Swine Diseases

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