title: Acquisition of insertion sequences and the GBSi1 intron by Streptococcus agalactiae isolates correlates with the evolution of the species.
abstract: The prevalence of insertion sequences IS1548, IS861, IS1381, and ISSa4 and of the group II intron GBSi1 within Streptococcus agalactiae human isolates strongly correlates with the genetic lineages obtained by multilocus sequence typing. Our results yielded an evolutionary scheme for the acquisition of these genetic elements linked to the ecosystems from which the isolates were obtained.
authors.affiliation: EA 3854 Bactéries et risque materno-foetal, Département de Microbiologie Médicale et Moléculaire, Faculté de Médecine de Tours, 37032 Tours, France.
authors.forename: Geneviève
authors.initials: G
authors.lastname: Héry-Arnaud
authors.forename: Guillaume
authors.initials: G
authors.lastname: Bruant
authors.forename: Philippe
authors.initials: P
authors.lastname: Lanotte
authors.forename: Stella
authors.initials: S
authors.lastname: Brun
authors.forename: Agnès
authors.initials: A
authors.lastname: Rosenau
authors.forename: Nathalie
authors.initials: N
authors.lastname: van der Mee-Marquet
authors.forename: Roland
authors.initials: R
authors.lastname: Quentin
authors.forename: Laurent
authors.initials: L
authors.lastname: Mereghetti
mesh_terms: D004251:DNA Transposable Elements; D019143:Evolution, Molecular; D006801:Humans; D007438:Introns / Q000235:genetics*; D016254:Mutagenesis, Insertional; D010802:Phylogeny; D015183:Restriction Mapping; D013292:Streptococcus agalactiae / Q000145:classification / Q000235:genetics* / Q000302:isolation & purification
chemical_list: D004251:DNA Transposable Elements