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 Previous Article

Journal of Bacteriology, September 2005, p. 6248-6252, Vol. 187, No. 17
0021-9193/05/$08.00+0     doi:10.1128/JB.187.17.6248-6252.2005
Copyright © 2005, American Society for Microbiology. All Rights Reserved.

Acquisition of Insertion Sequences and the GBSi1 Intron by Streptococcus agalactiae Isolates Correlates with the Evolution of the Species

Geneviève Héry-Arnaud,1 Guillaume Bruant,1,{dagger} Philippe Lanotte,1 Stella Brun,1 Agnès Rosenau,1 Nathalie van der Mee-Marquet,1,2 Roland Quentin,1,2 and Laurent Mereghetti1*

EA 3854 "Bactéries et risque materno-foetal," Département de Microbiologie Médicale et Moléculaire, Université François Rabelais,1 Centre National de Référence des Streptocoques—Laboratoire associé, Service de Bactériologie et Hygiène Hospitalière, Centre Hospitalier Universitaire, Tours, France2

Received 4 May 2005/ Accepted 16 June 2005

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.

* Corresponding author. Mailing address: EA 3854 "Bactéries et risque materno-foetal," Département de Microbiologie Médicale et Moléculaire, Faculté de Médecine de Tours, 37032 Tours, France. Phone: 33-247478056. Fax: 33-247473812. E-mail: laurent.mereghetti{at}med.univ-tours.fr.

{dagger} Present address: Groupe de recherche sur les maladies infectieuses du porc, Faculté de Médecine Vétérinaire, Université de Montréal, Saint-Hyacinthe, Québec, Canada.

Journal of Bacteriology, September 2005, p. 6248-6252, Vol. 187, No. 17
0021-9193/05/$08.00+0     doi:10.1128/JB.187.17.6248-6252.2005
Copyright © 2005, American Society for Microbiology. All Rights Reserved.



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