Diversification of giant and large eukaryotic dsDNA viruses predated the origin of modern eukaryotes
Giant and large eukaryotic double-stranded DNA viruses from the Nucleo-Cytoplasmic Large DNA Virus (NCLDV) assemblage represent a remarkably diverse and potentially ancient component of the eukaryotic virome. However, their origin(s), evolution, and potential roles in the emergence of modern eukaryo...
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| Vydáno v: | Proceedings of the National Academy of Sciences - PNAS Ročník 116; číslo 39; s. 19585 |
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| Médium: | Journal Article |
| Jazyk: | angličtina |
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United States
24.09.2019
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| ISSN: | 1091-6490, 1091-6490 |
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| Abstract | Giant and large eukaryotic double-stranded DNA viruses from the Nucleo-Cytoplasmic Large DNA Virus (NCLDV) assemblage represent a remarkably diverse and potentially ancient component of the eukaryotic virome. However, their origin(s), evolution, and potential roles in the emergence of modern eukaryotes remain subjects of intense debate. Here we present robust phylogenetic trees of NCLDVs, based on the 8 most conserved proteins responsible for virion morphogenesis and informational processes. Our results uncover the evolutionary relationships between different NCLDV families and support the existence of 2 superclades of NCLDVs, each encompassing several families. We present evidence strongly suggesting that the NCLDV core genes, which are involved in both informational processes and virion formation, were acquired vertically from a common ancestor. Among them, the largest subunits of the DNA-dependent RNA polymerase were transferred between 2 clades of NCLDVs and proto-eukaryotes, giving rise to 2 of the 3 eukaryotic DNA-dependent RNA polymerases. Our results strongly suggest that these transfers and the diversification of NCLDVs predated the emergence of modern eukaryotes, emphasizing the major role of viruses in the evolution of cellular domains. |
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| AbstractList | Giant and large eukaryotic double-stranded DNA viruses from the Nucleo-Cytoplasmic Large DNA Virus (NCLDV) assemblage represent a remarkably diverse and potentially ancient component of the eukaryotic virome. However, their origin(s), evolution, and potential roles in the emergence of modern eukaryotes remain subjects of intense debate. Here we present robust phylogenetic trees of NCLDVs, based on the 8 most conserved proteins responsible for virion morphogenesis and informational processes. Our results uncover the evolutionary relationships between different NCLDV families and support the existence of 2 superclades of NCLDVs, each encompassing several families. We present evidence strongly suggesting that the NCLDV core genes, which are involved in both informational processes and virion formation, were acquired vertically from a common ancestor. Among them, the largest subunits of the DNA-dependent RNA polymerase were transferred between 2 clades of NCLDVs and proto-eukaryotes, giving rise to 2 of the 3 eukaryotic DNA-dependent RNA polymerases. Our results strongly suggest that these transfers and the diversification of NCLDVs predated the emergence of modern eukaryotes, emphasizing the major role of viruses in the evolution of cellular domains.Giant and large eukaryotic double-stranded DNA viruses from the Nucleo-Cytoplasmic Large DNA Virus (NCLDV) assemblage represent a remarkably diverse and potentially ancient component of the eukaryotic virome. However, their origin(s), evolution, and potential roles in the emergence of modern eukaryotes remain subjects of intense debate. Here we present robust phylogenetic trees of NCLDVs, based on the 8 most conserved proteins responsible for virion morphogenesis and informational processes. Our results uncover the evolutionary relationships between different NCLDV families and support the existence of 2 superclades of NCLDVs, each encompassing several families. We present evidence strongly suggesting that the NCLDV core genes, which are involved in both informational processes and virion formation, were acquired vertically from a common ancestor. Among them, the largest subunits of the DNA-dependent RNA polymerase were transferred between 2 clades of NCLDVs and proto-eukaryotes, giving rise to 2 of the 3 eukaryotic DNA-dependent RNA polymerases. Our results strongly suggest that these transfers and the diversification of NCLDVs predated the emergence of modern eukaryotes, emphasizing the major role of viruses in the evolution of cellular domains. Giant and large eukaryotic double-stranded DNA viruses from the Nucleo-Cytoplasmic Large DNA Virus (NCLDV) assemblage represent a remarkably diverse and potentially ancient component of the eukaryotic virome. However, their origin(s), evolution, and potential roles in the emergence of modern eukaryotes remain subjects of intense debate. Here we present robust phylogenetic trees of NCLDVs, based on the 8 most conserved proteins responsible for virion morphogenesis and informational processes. Our results uncover the evolutionary relationships between different NCLDV families and support the existence of 2 superclades of NCLDVs, each encompassing several families. We present evidence strongly suggesting that the NCLDV core genes, which are involved in both informational processes and virion formation, were acquired vertically from a common ancestor. Among them, the largest subunits of the DNA-dependent RNA polymerase were transferred between 2 clades of NCLDVs and proto-eukaryotes, giving rise to 2 of the 3 eukaryotic DNA-dependent RNA polymerases. Our results strongly suggest that these transfers and the diversification of NCLDVs predated the emergence of modern eukaryotes, emphasizing the major role of viruses in the evolution of cellular domains. |
| Author | Krupovic, Mart Gaia, Morgan Guglielmini, Julien Forterre, Patrick Woo, Anthony C |
| Author_xml | – sequence: 1 givenname: Julien surname: Guglielmini fullname: Guglielmini, Julien organization: HUB Bioinformatique et Biostatistique, C3BI, USR 3756 IP CNRS, Institut Pasteur, 75015 Paris, France – sequence: 2 givenname: Anthony C surname: Woo fullname: Woo, Anthony C organization: Unité de Biologie Moléculaire du Gène ches les Extrêmophiles, Département de Microbiologie, Institut Pasteur, 75015 Paris, France – sequence: 3 givenname: Mart surname: Krupovic fullname: Krupovic, Mart organization: Unité de Biologie Moléculaire du Gène ches les Extrêmophiles, Département de Microbiologie, Institut Pasteur, 75015 Paris, France – sequence: 4 givenname: Patrick surname: Forterre fullname: Forterre, Patrick email: patrick.forterre@pasteur.fr, morgan.gaia@pasteur.fr organization: Institute for Integrative Biology of the Cell (I2BC), CEA, CNRS, Université Paris-Sud, Université Paris-Saclay, 91198 Gif-sur-Yvette cedex, France – sequence: 5 givenname: Morgan orcidid: 0000-0003-4936-4780 surname: Gaia fullname: Gaia, Morgan email: patrick.forterre@pasteur.fr, morgan.gaia@pasteur.fr organization: Institute for Integrative Biology of the Cell (I2BC), CEA, CNRS, Université Paris-Sud, Université Paris-Saclay, 91198 Gif-sur-Yvette cedex, France |
| BackLink | https://www.ncbi.nlm.nih.gov/pubmed/31506349$$D View this record in MEDLINE/PubMed |
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| SubjectTerms | Biological Evolution Cell Nucleus - genetics Cytoplasm - virology DNA Viruses - genetics DNA-Directed RNA Polymerases - genetics DNA-Directed RNA Polymerases - metabolism Eukaryota - genetics Eukaryotic Cells - metabolism Evolution, Molecular Giant Viruses - genetics Giant Viruses - metabolism Phylogeny |
| Title | Diversification of giant and large eukaryotic dsDNA viruses predated the origin of modern eukaryotes |
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