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Borrelia lanei sp. nov. extends the diversity of Borrelia species in California.

ABSTRACT: The diversity of Borrelia species discovered in California appears to be particularly high. A divergent group of Borrelia strains collected from Ixodes ticks in California was described by Postic and co-workers and designated 'genomospecies 2' (Postic D, Garnier M, Baranton G. Int J Med Microbiol 2007;297:263-271; Postic D, Ras NM, Lane RS, Hendson M, Baranton G. J Clin Microbiol 1998;36:3497-3504). We performed multilocus sequence analysis (MLSA) using eight housekeeping loci (clpA, clpX, nifS, pepX, pyrG, recG, rplB and uvrA) on 12 strains of this Borreliagenospecies to confirm that these strains form a distinct group within the Borreliaburgdorferi s. l. complex (Margos?G, Hojgaard A, Lane RS, Cornet M, Fingerle V et al.Ticks Tick Borne Dis 2010;1:151-158). Phylogenetic and genetic distance analyses based on sequences of the MLSA housekeeping genes corroborated the distinctness of this group; genetic distances to all other members of the B. burgdorferi s.l. complex were 96?% or lower. We propose the name Borrelia lanei sp. nov. for this genospecies in honor of Professor Robert S. Lane, University of California Berkeley, for his contributions to Borrelia and tick research. The type strain for Borrelia lanei sp. nov., strain CA28-91T, has been deposited to two culture collections (=DSM 17992T=CIP 109135T).

SUBMITTER: Margos G

PROVIDER: S-EPMC5737112 | biostudies-literature | 2017 Oct

REPOSITORIES: biostudies-literature

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Borrelia lanei sp. nov. extends the diversity of Borrelia species in California.

Margos Gabriele G Fedorova Natalia N Kleinjan Joyce E JE Hartberger Christine C Schwan Tom G TG Sing Andreas A Fingerle Volker V

International journal of systematic and evolutionary microbiology 20170908 10

The diversity of Borrelia species discovered in California appears to be particularly high. A divergent group of Borrelia strains collected from Ixodes ticks in California was described by Postic and co-workers and designated 'genomospecies 2' (Postic D, Garnier M, Baranton G. Int J Med Microbiol 2007;297:263-271; Postic D, Ras NM, Lane RS, Hendson M, Baranton G. J Clin Microbiol 1998;36:3497-3504). We performed multilocus sequence analysis (MLSA) using eight housekeeping loci (clpA, clpX, nifS, ...[more]

PMID: 28884668

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Project description:Up to now, the only species in the complex Borrelia burgdorferi sensu lato known to cause Lyme borreliosis in the United States has been B. burgdorferi sensu stricto. However, some atypical strains closely related to the previously designated genomic group DN127 have been isolated in the United States, mostly in California. To explore the diversity of B. burgdorferi sensu lato group DN127, we analyzed the nucleotide sequences of the rrf-rrl intergenic spacer regions from 19 atypical strains (18 from California and one from New York) and 13 North American B. burgdorferi sensu stricto strains (6 from California). The spacer region sequences from the entire B. burgdorferi sensu lato complex available in data banks were used for comparison. Phylogenetic analysis of sequences shows that the main species of the B. burgdorferi sensu lato complex (B. afzelii, B. garinii, B. andersonii, B. japonica, B. burgdorferi sensu stricto, B. valaisiana, and B. lusitaniae) each form a coherent cluster. A heterogeneous group comprising strains belonging to the previously designated group DN127 clustered separately from B. burgdorferi sensu stricto. Within this cluster, the deep branches expressing the distances between the rrf-rrl sequences reflect a high level of divergence. This unexpected diversity contrasts with the monomorphism exhibited by B. burgdorferi sensu stricto. To clarify the taxonomic status of this highly heterogeneous group, analysis of the rrs sequences of selected strains chosen from deeply separated branches was performed. The results show that these strains significantly diverge at a level that is compatible with several distinct genomic groups. We conclude that the taxonomy and phylogeny of North American B. burgdorferi sensu lato should be reevaluated. For now, we propose that the genomic group DN127 should be referred to as a new species, B. bissettii sp. nov., and that other related but distinct strains, which require further characterization, be referred to as Borrelia spp.

Dataset Information

Borrelia lanei sp. nov. extends the diversity of Borrelia species in California.

Publications

Borrelia lanei sp. nov. extends the diversity of Borrelia species in California.

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