Contribution of horizontal gene transfer and deletion events to development of distinctive patterns of fimbrial operons during evolution of Salmonella serotypes

Andreas J Baumler, Andries J. Gilde, Renee M Tsolis, Adrianus W M Van Der Velden, Brian M M Ahmer, Fred Heffron

Research output: Contribution to journalArticle

87 Citations (Scopus)

Abstract

Only certain serotypes of Salmonella represent 99% of all human clinical isolates. We determined whether the phylogenetic distribution of fimbrial operons would account for the host adaptations observed for Salmonella serotypes. We found that three fimbrial operons, fim, lpf, and agf, were present in a lineage ancestral to Salmonella. While the fim and agf fimbrial operons were highly conserved among all Salmonella serotypes, sequence analysis suggested that the lpf operon was lost from many distantly related lineages. As a consequence, the distribution of the lpf operon cannot be explained easily and may be a consequence of positive and negative selection in different hosts for the presence of these genes. Two other fimbrial operons, sef and pef, each entered two distantly related Salmonella lineages and each is present only in a small number of serotypes. These results show that horizontal gene transfer and deletion events have created unique combinations of fimbrial operons among Salmonella serotypes. The presence of sef and pef correlated with serotypes frequently isolated from common domesticated animals.

Original languageEnglish (US)
Pages (from-to)317-322
Number of pages6
JournalJournal of Bacteriology
Volume179
Issue number2
StatePublished - 1997
Externally publishedYes

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Horizontal Gene Transfer
Gene Deletion
Operon
Salmonella
Domestic Animals
Serogroup
Sequence Analysis
Genes

ASJC Scopus subject areas

  • Applied Microbiology and Biotechnology
  • Immunology

Cite this

Contribution of horizontal gene transfer and deletion events to development of distinctive patterns of fimbrial operons during evolution of Salmonella serotypes. / Baumler, Andreas J; Gilde, Andries J.; Tsolis, Renee M; Van Der Velden, Adrianus W M; Ahmer, Brian M M; Heffron, Fred.

In: Journal of Bacteriology, Vol. 179, No. 2, 1997, p. 317-322.

Research output: Contribution to journalArticle

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AU - Van Der Velden, Adrianus W M

AU - Ahmer, Brian M M

AU - Heffron, Fred

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