Genome sequence of the pathogenic intestinal spirochete Brachyspira hyodysenteriae reveals adaptations to its lifestyle in the porcine large intestine

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • Matthew I. Bellgard
  • Phatthanaphong Wanchanthuek
  • Tom La
  • Karon Ryan
  • Paula Moolhuijzen
  • Zayed Albertyn
  • Babak Shaban
  • Yair Motro
  • David S. Dunn
  • David Schibeci
  • Adam Hunter
  • Roberto Barrero
  • Nyree D. Phillips

Detail(s)

Original languageEnglish
Article numbere4641
Journal / PublicationPLoS ONE
Volume4
Issue number3
Online published5 Mar 2009
Publication statusPublished - Mar 2009
Externally publishedYes

Link(s)

Abstract

Brachyspira hyodysenteriae is an anaerobic intestinal spirochete that colonizes the large intestine of pigs and causes swine dysentery, a disease of significant economic importance. The genome sequence of B. hyodysenteriae strain WA1 was determined, making it the first representative of the genus Brachyspira to be sequenced, and the seventeenth spirochete genome to be reported. The genome consisted of a circular 3,000,694 base pair (bp) chromosome, and a 35,940 bp circular plasmid that has not previously been described. The spirochete had 2,122 protein-coding sequences. Of the predicted proteins, more had similarities to proteins of the enteric Escherichia coli and Clostridium species than they did to proteins of other spirochetes. Many of these genes were associated with transport and metabolism, and they may have been gradually acquired through horizontal gene transfer in the environment of the large intestine. A reconstruction of central metabolic pathways identified a complete set of coding sequences for glycolysis, gluconeogenesis, a non-oxidative pentose phosphate pathway, nucleotide metabolism, lipooligosaccharide biosynthesis, and a respiratory electron transport chain. A notable finding was the presence on the plasmid of the genes involved in rhamnose biosynthesis. Potential virulence genes included those for 15 proteases and six hemolysins. Other adaptations to an enteric lifestyle included the presence of large numbers of genes associated with chemotaxis and motility. B. hyodysenteriae has diverged from other spirochetes in the process of accommodating to its habitat in the porcine large intestine.

Research Area(s)

Citation Format(s)

Genome sequence of the pathogenic intestinal spirochete Brachyspira hyodysenteriae reveals adaptations to its lifestyle in the porcine large intestine. / Bellgard, Matthew I.; Wanchanthuek, Phatthanaphong; La, Tom et al.
In: PLoS ONE, Vol. 4, No. 3, e4641, 03.2009.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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