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Remarkable diversity of endogenous viruses in a crustacean genome.

Thézé J, Leclercq S, Moumen B, Cordaux R, Gilbert C - Genome Biol Evol (2014)

Bottom Line: These fragments result from endogenization, that is, integration of the viral genome into the host germline genome followed by vertical inheritance.We show that viral endogenization occurred recurrently during the evolution of isopods and that A. vulgare viral lineages were involved in multiple host switches that took place between widely divergent taxa.More generally, our results underline the power of paleovirology in characterizing the viral diversity currently infecting eukaryotic taxa.

View Article: PubMed Central - PubMed

Affiliation: Université de Poitiers, UMR CNRS 7267 Ecologie et Biologie des Interactions, Equipe Ecologie Evolution Symbiose, Poitiers, France.

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Related in: MedlinePlus

Phylogeny of the Circular Rep-dependent ssDNA viruses. The tree was obtained from ML analysis of the replication-associated protein multiple aa alignment, including Armadillidium vulgare EVE sequences, viral sequences of closely related exogenous and endogenous viruses and of representative species of the Circoviridae and Nanoviridae families. ML nonparametric bootstrap values (100 replicates) are indicated at each node. Associated hosts are indicated by branch colors and silhouettes at the bottom.
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evu163-F5: Phylogeny of the Circular Rep-dependent ssDNA viruses. The tree was obtained from ML analysis of the replication-associated protein multiple aa alignment, including Armadillidium vulgare EVE sequences, viral sequences of closely related exogenous and endogenous viruses and of representative species of the Circoviridae and Nanoviridae families. ML nonparametric bootstrap values (100 replicates) are indicated at each node. Associated hosts are indicated by branch colors and silhouettes at the bottom.

Mentions: The 20 A. vulgare circovirus-like sequences (fig. 5; 27–46) seemingly form a monophyletic clade that appears to be most closely related to the unclassified Dragonfly orbiculatus virus (Rosario et al. 2012), though this position is not well supported (bootstrap = 51). Overall, the phylogeny indicates that A. vulgare circovirus-like EVEs likely belong to a new lineage of circular Rep-dependent ssDNA viruses (CRESS-DNA according to Rosario et al. 2012) distantly related to the Circoviridae and Nanoviridae families. In addition, the circovirus-like sequences we found in two mollusc species (the oyster Crassostrea gigas and Lottia gigantea) likely correspond to new nonplant Nanoviridae lineages.


Remarkable diversity of endogenous viruses in a crustacean genome.

Thézé J, Leclercq S, Moumen B, Cordaux R, Gilbert C - Genome Biol Evol (2014)

Phylogeny of the Circular Rep-dependent ssDNA viruses. The tree was obtained from ML analysis of the replication-associated protein multiple aa alignment, including Armadillidium vulgare EVE sequences, viral sequences of closely related exogenous and endogenous viruses and of representative species of the Circoviridae and Nanoviridae families. ML nonparametric bootstrap values (100 replicates) are indicated at each node. Associated hosts are indicated by branch colors and silhouettes at the bottom.
© Copyright Policy - creative-commons
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4231630&req=5

evu163-F5: Phylogeny of the Circular Rep-dependent ssDNA viruses. The tree was obtained from ML analysis of the replication-associated protein multiple aa alignment, including Armadillidium vulgare EVE sequences, viral sequences of closely related exogenous and endogenous viruses and of representative species of the Circoviridae and Nanoviridae families. ML nonparametric bootstrap values (100 replicates) are indicated at each node. Associated hosts are indicated by branch colors and silhouettes at the bottom.
Mentions: The 20 A. vulgare circovirus-like sequences (fig. 5; 27–46) seemingly form a monophyletic clade that appears to be most closely related to the unclassified Dragonfly orbiculatus virus (Rosario et al. 2012), though this position is not well supported (bootstrap = 51). Overall, the phylogeny indicates that A. vulgare circovirus-like EVEs likely belong to a new lineage of circular Rep-dependent ssDNA viruses (CRESS-DNA according to Rosario et al. 2012) distantly related to the Circoviridae and Nanoviridae families. In addition, the circovirus-like sequences we found in two mollusc species (the oyster Crassostrea gigas and Lottia gigantea) likely correspond to new nonplant Nanoviridae lineages.

Bottom Line: These fragments result from endogenization, that is, integration of the viral genome into the host germline genome followed by vertical inheritance.We show that viral endogenization occurred recurrently during the evolution of isopods and that A. vulgare viral lineages were involved in multiple host switches that took place between widely divergent taxa.More generally, our results underline the power of paleovirology in characterizing the viral diversity currently infecting eukaryotic taxa.

View Article: PubMed Central - PubMed

Affiliation: Université de Poitiers, UMR CNRS 7267 Ecologie et Biologie des Interactions, Equipe Ecologie Evolution Symbiose, Poitiers, France.

Show MeSH
Related in: MedlinePlus