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    A deep-branching clade of retrovirus-like retrotransposons in bdelloid rotifers

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    GENE-D-06-00333.pdf (478.8Kb)
    Date
    2006-09-12
    Author
    Gladyshev, Eugene A.  Concept link
    Meselson, Matthew  Concept link
    Arkhipova, Irina R.  Concept link
    Metadata
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    Citable URI
    https://hdl.handle.net/1912/1585
    As published
    https://doi.org/10.1016/j.gene.2006.09.025
    Keyword
     LTR retrotransposons; Asexual reproduction; Reverse transcriptase; Integrase; Gag; Pol; Env 
    Abstract
    Rotifers of class Bdelloidea, a group of aquatic invertebrates in which males and meiosis have never been documented, are also unusual in their lack of multicopy LINE-like and gypsy-like retrotransposons, groups inhabiting the genomes of nearly all other metazoans. Bdelloids do contain numerous DNA transposons, both intact and decayed, and domesticated Penelope-like retroelements Athena, concentrated at telomeric regions. Here we describe two LTR retrotransposons, each found at low copy number in a different bdelloid species, which define a clade different from previously known clades of LTR retrotransposons. Like bdelloid DNA transposons and Athena, these elements have been found preferentially in telomeric regions. Unlike bdelloid DNA transposons, many of which are decayed, the newly described elements, named Vesta and Juno, inhabiting the genomes of Philodina roseola and Adineta vaga, respectively, appear to be intact and to represent recent insertions, possibly from an exogenous source. We describe the retrovirus-like structure of the new elements, containing gag, pol, and env-like open reading frames, and discuss their possible origins, transmission, and behavior in bdelloid genomes.
    Description
    Author Posting. © The Author(s), 2006. This is the author's version of the work. It is posted here by permission of Elsevier B.V. for personal use, not for redistribution. The definitive version was published in Gene 390 (2007): 136-145, doi:10.1016/j.gene.2006.09.025.
    Collections
    • Josephine Bay Paul Center in Comparative Molecular Biology and Evolution
    Suggested Citation
    Preprint: Gladyshev, Eugene A., Meselson, Matthew, Arkhipova, Irina R., "A deep-branching clade of retrovirus-like retrotransposons in bdelloid rotifers", 2006-09-12, https://doi.org/10.1016/j.gene.2006.09.025, https://hdl.handle.net/1912/1585
     

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