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Diplorickettsia massiliensis
''Diplorickettsia massiliensis'' species is an obligate intracellular, gram negative bacterium isolated from Ixodes ricinus ticks collected in Slovak republic forest geographically from southeastern part of Rovinka in 2006.〔Mediannikov, O., et al., (A novel obligate intracellular gamma-proteobacterium associated with ixodid ticks, Diplorickettsia massiliensis, Gen. Nov., Sp. Nov. ) ''PLoS One'', 2010. 5(7): p. e11478.〕 They belong to the gammaproteobacteria class and are non endospore forming, small rods usually grouped in pairs. The bacteria are non-motile, and 16S rRNA, rpoB, parC and ftsY gene sequencing indicate that this bacterium is clearly different from all other recognized species. An initial phylogenetic analysis based on 16S rRNA, clustered ''D. massiliensis'' with ''Rickettsiella grylli''.〔〔Roux, V., et al.,(Reassessment of the taxonomic position of ''Rickettsiella grylli''. ) ''Int J Syst Bacteriol'', 1997. 47(4): p. 1255-7〕 Because of its low 16S rDNA similarity (94%) with ''R. grylli'', it was classified as a new genus ''Diplorickettsia'' into the family ''Coxiellaceae'' and the order ''Legionellales''.〔 ''D. massiliensis'' strain 20B was identified in three patients with suspected tick-borne infections that exhibited a specific seroconversion. The evidence of infection was further reconfirmed by using PCR-assay, thus established its role as a human pathogen and later whole genome sequencing was performed.〔Mathew, M.J., et al., (Genome sequence of ''Diplorickettsia massiliensis'', an emerging ''Ixodes ricinus''-associated human pathogen. ) ''J Bacteriol'', 2012. 194(12): p. 3287.〕〔Subramanian, G., et al.,(''Diplorickettsia massiliensis'' as a human pathogen. ) ''Eur J Clin Microbiol Infect Dis'', 2012. 31(3): p. 365-9.〕
==Description==
''Diplorickettsia massiliensis'' (mas.si' li.en.sis. L. gen. adj. massiliensis, from Massilia, the Latin name of Marseille, France, where the organism was first grown, identified and characterized). The description is for that of genus type strain 20B. The known geographical distribution of this bacterium is Slovakia. This isolate has been deposited in the collection of the two World Health Organization Collaborative Centers for Rickettsial Reference and Research in Bratislava, Slovak Republic and the Faculté de Médecine, University of the Mediterranean in Marseille, France, as well as in the German Collection of Microorganisms and Cell Cultures (Deutsche Sammlung von Mikroorganismen und Zellkulturen, DSMZ) under the reference DSM 233381.
The GenBank/EMBL/DDBJ accession numbers for the 16S rRNA gene, rpoB, parC and ftsY sequences of strain B20 are GQ857549, GQ983049, GQ983050, and GU289825, respectively.
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