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The Genetic Diversity of Rickettsiella Symbionts in Ixodes ricinus Throughout Europe

Garcia-Vozmediano, Aitor and Tomassone, Laura and Fonville, Manoj and Bertolotti, Luigi and Heylen, Dieter and Fabri, Nannet and Medlock, Jolyon M. and Nijhof, Ard M. and Hansford, Kayleigh M. and Sprong, Hein and Krawczyk, Aleksandra I. (2022). The Genetic Diversity of Rickettsiella Symbionts in Ixodes ricinus Throughout Europe. Microbial Ecology. 84 :2 , 613-626
[Research article]

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Abstract

Rickettsiella species are bacterial symbionts that are present in a great variety of arthropod species, including ixodid ticks. However, little is known about their genetic diversity and distribution in Ixodes ricinus, as well as their relationship with other tick-associated bacteria. In this study, we investigated the occurrence and the genetic diversity of Rickettsiella spp. in I. ricinus throughout Europe and evaluated any preferential and antagonistic associations with Candidatus Midichloria mitochondrii and the pathogens Borrelia burgdorferi sensu lato and Borrelia miyamotoi. Rickettsiella spp. were detected in most I. ricinus populations investigated, encompassing a wide array of climate types and environments. The infection prevalence significantly differed between geographic locations and was significantly higher in adults than in immature life stages. Phylogenetic investigations and protein characterization disclosed four Rickettsiella clades (I-IV). Close phylogenetic relations were observed between Rickettsiella strains of I. ricinus and other arthropod species. Isolation patterns were detected for Clades II and IV, which were restricted to specific geographic areas. Lastly, although coinfections occurred, we did not detect significant associations between Rickettsiella spp. and the other tick-associated bacteria investigated. Our results suggest that Rickettsiella spp. are a genetically and biologically diverse facultative symbiont of I. ricinus and that their distribution among tick populations could be influenced by environmental components.

Authors/Creators:Garcia-Vozmediano, Aitor and Tomassone, Laura and Fonville, Manoj and Bertolotti, Luigi and Heylen, Dieter and Fabri, Nannet and Medlock, Jolyon M. and Nijhof, Ard M. and Hansford, Kayleigh M. and Sprong, Hein and Krawczyk, Aleksandra I.
Title:The Genetic Diversity of Rickettsiella Symbionts in Ixodes ricinus Throughout Europe
Series Name/Journal:Microbial Ecology
Year of publishing :2022
Volume:84
Number:2
Page range:613-626
Number of Pages:14
Publisher:SPRINGER
ISSN:0095-3628
Language:English
Publication Type:Research article
Article category:Scientific peer reviewed
Version:Published version
Copyright:Creative Commons: Attribution 4.0
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 1 Natural sciences > 106 Biological Sciences (Medical to be 3 and Agricultural to be 4) > Ecology
Keywords:Rickettsiella, Tick-borne bacteria co-infection, Facultative symbionts, Ixodes ricinus ecology, Tick-borne pathogens
URN:NBN:urn:nbn:se:slu:epsilon-p-113867
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-113867
Additional ID:
Type of IDID
DOI10.1007/s00248-021-01869-7
Web of Science (WoS)000700999800001
Scopus2-s2.0-85115831823
ID Code:28823
Faculty:S - Faculty of Forest Sciences
Department:(S) > Dept. of Wildlife, Fish and Environmental Studies
Deposited By: SLUpub Connector
Deposited On:12 Sep 2022 11:28
Metadata Last Modified:12 Sep 2022 11:31

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