Open AccessChromosomal genotypes (evolutionary lines) of Salmonella berta
Author(s) -
Stanley John,
Chowdry Namoos,
Powell Neville,
Threlfall Eric John
Publication year - 1992
Publication title -
fems microbiology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.899
H-Index - 151
eISSN - 1574-6968
pISSN - 0378-1097
DOI - 10.1111/j.1574-6968.1992.tb05374.x
Subject(s) - biology , genetics , clone (java method) , insertion sequence , genotype , salmonella , plasmid , serotype , dna , genome , gene , transposable element , virology , bacteria
The copy number and location of the insertion sequence IS 200 , a mobile DNA element, was established across a collection of Salmonella berta . All strains contained one common site, assumed to be present in the evolutionary ancestor of this serovar. With one exception, all strains, including recent outbreak isolates from the UK and sporadic isolates of world‐wide distribution, were representatives of a single genotypic clone which carried three common IS 200 insertion sites. This clone has acquired diverse combinations of plasmids, reflecting its actual or recent distribution and host. A single isolate, belonging to a second, minor genotypic clone was characterised by two IS 200 insertion sites.