title: Isolates of Piscirickettsia salmonis from Scotland and Ireland show evidence of clonal diversity.
abstract: Salmonid rickettsial septicemia, caused by Piscirickettsia salmonis, causes major mortalities in Chilean salmonid aquaculture and is an increasing problem in Atlantic salmon in Ireland and Scotland. Analysis of 16S-to-23S internal transcribed sequences and 16S ribosomal DNA (rDNA) shows that Irish isolates of P. salmonis form two new groups of the organism while Scottish isolates cluster together with Norwegian and Canadian isolates from Atlantic salmon.
authors.affiliation: Division of Infection and Immunity, Institute of Biomedical and Life Sciences, Joseph Black Building, University of Glasgow, Glasgow G12 8QQ, Scotland.
authors.forename: H I
authors.initials: HI
authors.lastname: Reid
authors.forename: A A
authors.initials: AA
authors.lastname: Griffen
authors.forename: T H
authors.initials: TH
authors.lastname: Birkbeck
mesh_terms: D000818:Animals; D001483:Base Sequence; D003001:Cloning, Molecular; D004269:DNA, Bacterial / Q000302:isolation & purification; D004275:DNA, Ribosomal / Q000737:chemistry; D007494:Ireland; D008969:Molecular Sequence Data; D044147:Piscirickettsiaceae / Q000145:classification / Q000235:genetics / Q000302:isolation & purification*; D012336:RNA, Ribosomal, 16S / Q000235:genetics; D020317:Salmo salar / Q000382:microbiology*; D012606:Scotland
chemical_list: D004269:DNA, Bacterial; D004275:DNA, Ribosomal; D012336:RNA, Ribosomal, 16S