'Candidatus Rickettsia mendelii', a novel basal group rickettsia detected in Ixodes ricinus ticks in the Czech Republic

Authors

HAJDUSKOVA Eva LITERAK Ivan PAPOUSEK Ivo COSTA Francisco B. NOVAKOVA Marketa LABRUNA Marcelo B. ZDRAŽILOVÁ DUBSKÁ Lenka

Year of publication 2016
Type Article in Periodical
Magazine / Source Ticks and Tick-borne Diseases
MU Faculty or unit

Faculty of Medicine

Citation
Doi http://dx.doi.org/10.1016/j.ttbdis.2016.02.004
Field Epidemiology, infectious diseases and clinical immunology
Keywords Rickettsiae; Candidatus Rickettsia mendelii; Ixodes ricinus; Basal group rickettsiae; Ticks; Czech Republic
Description A novel rickettsial sequence in the citrate synthase gltA gene indicating a novel Rickettsia species has been detected in 7 out of 4524 Ixodes ricinus ticks examined within several surveys performed in the Czech Republic from 2005 to 2009. This new Candidatus Rickettsia sp. sequence has been found in 2 nymphs feeding on wild birds (Luscinia megarhynchos and Erithacus rubecula), in a male tick from vegetation, and 4 ticks feeding on a dog (3 males, 1 female tick). Portions of the ompA, ompB, sca4, and htrA genes were not amplifiable in these samples. A maximum likelihood tree of rickettsiae based on comparisons of partial amino acid sequences of citrate synthase and nucleotide sequences of 16S rDNA genes and phylogenetic analysis revealed a basal position of the novel species in the proximity of R. bellii and R. canadensis. The novel species has been named 'Candidatus Rickettsia mendelii' after the founder of genetics, Gregor Mendel. (C) 2016 Elsevier GmbH. All rights reserved.
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