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    A tangled web: Origins of reproductive parasitism

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    Author
    Gillespie, J.J.
    Driscoll, T.P.
    Verhoeve, V.I.
    Date
    2018
    Journal
    Genome Biology and Evolution
    Publisher
    Oxford University Press
    Type
    Article
    
    Metadata
    Show full item record
    See at
    https://dx.doi.org/10.1093/gbe/evy159
    Abstract
    While typically a flea parasite and opportunistic human pathogen, the presence of Rickettsia felis (strain LSU-Lb) in the non-bloodfeeding, parthenogenetically reproducing booklouse, Liposcelis bostrychophila, provides a system to ascertain factors governing not only host transitions but also obligate reproductive parasitism (RP). Analysis of plasmid pLbAR, unique to R. felis str. LSU-Lb, revealed a toxin-antitoxin module with similar features to prophage-encoded toxin-antitoxin modules utilized by parasitic Wolbachia strains to induce another form of RP, cytoplasmic incompatibility, in their arthropod hosts. Curiously, multiple deubiquitinase and nuclease domains of the large (3,841 aa) pLbAR toxin, as well the entire antitoxin, facilitated the detection of an assortment of related proteins from diverse intracellular bacteria, including other reproductive parasites. Our description of these remarkable components of the intracellular mobilome, including their presence in certain arthropod genomes, lends insight on the evolution of RP, while invigorating research on parasite-mediated biocontrol of arthropod-borne viral and bacterial pathogens. Copyright The Author(s) 2018.
    Sponsors
    This work was supported with funds from the National Institute of Health/ National Institute of Allergy and Infectious Diseases grants (R01AI017828 and R01AI126853 to A.F.A., R21AI26108 to J.J.G. and M.S.R., and AI22672 to K.R.M.).
    Keyword
    Cytoplasmic incompatibility
    Intracellular bacteria
    Parthenogenesis
    Reproductive parasitism
    Rickettsia
    Wolbachia
    Identifier to cite or link to this item
    https://www.scopus.com/inward/record.uri?eid=2-s2.0-85054888213&doi=10.1093%2fgbe%2fevy159&partnerID=40&md5=a1dd26c9623f595d4f8b598aa716a87c; http://hdl.handle.net/10713/9184
    ae974a485f413a2113503eed53cd6c53
    10.1093/gbe/evy159
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