Reference collection of strains of the Salmonella typhimurium complex from natural populations (original) (raw)

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Abstract

A collection of 72 reference strains of the Salmonella typhimurium complex of clones recovered from a variety of hosts and environmental sources in diverse geographic locations has been established for use in studies of variation in natural populations. Included are strains of the serovars S. typhimurium, S. saintpaul, S. heidelberg, S.paratyphi B (including variety java) and S. muenchen. The strains, which have been characterized by enzyme electrophoresis for allelic variation in 24 chromosomal structural genes and represent 48 distinctive multilocus genotypes (electrophoretic types or ETs), exemplify the full range of genotypic variation in the S. typhimurium complex. Evolutionary genetic relationships among the ETs are indicated in a phylogenetic tree generated by the neighbour-joining method from a matrix of Nei's standard genetic distance.

• Received: 17/04/1990
• Accepted:06/12/1990
• Revised:03/12/1990
• Published Online:01/03/1991

© Society for General Microbiology 1991

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1991-03-01

2024-10-22

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