Bracoviruses, ichnoviruses, and virus-like particles from parasitoid wasps retain many features of their virus ancestors
Résumé
Animal genomes commonly contain genes or sequences that
have been acquired from different types of viruses. The vast
majority of these endogenous virus elements (EVEs) are
inactive or consist of only a small number of components that
show no evidence of cooption for new functions or interaction.
Unlike most EVEs, bracoviruses (BVs), ichnoviruses (IVs) and
virus-like particles (VLPs) in parasitoid wasps have evolved
through retention and interaction of many genes from virus
ancestors. Here, we discuss current understanding of BV, IV
and VLP evolution along with associated implications for what
constitutes a virus. We suggest that BVs and IVs are
domesticated endogenous viruses (DEVs) that differ in several
important ways from other known EVEs.
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Bracoviruses, Ichnoviruses, and virus-like particles from parasitoid wasps retain many features of their virus ancestors (accepted version).pdf (4.06 Mo)
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