title: Distribution of pathogenicity islands in Salmonella spp.
abstract: We investigated the phylogenetic distribution of the SPI-1 and SPI-2 pathogenicity islands in Salmonella spp. SPI-1 was present in representatives of all eight subspecific groups, but no SPI-2-hybridizing sequences were detected in group V (S. bongori). Our data suggest that SPI-2 was acquired by S. enterica after its split from S. bongori.
authors.affiliation: Department of Biology, University of Rochester, New York 14627, USA.
authors.forename: H
authors.initials: H
authors.lastname: Ochman
authors.forename: E A
authors.initials: EA
authors.lastname: Groisman
mesh_terms: D010802:Phylogeny; D012475:Salmonella / Q000235:genetics* / Q000472:pathogenicity; D014774:Virulence / Q000235:genetics