Family: Marnaviridae
Genus: Labyrnavirus
Distinguishing features
The member of the genus forms a separate clade from other members of the family upon phylogenetic analysis of RNA-directed RNA polymerase amino acid sequences.
Virion
See discussion under family description.
Genome organization and replication
The genome is di-cistronic with and a third small overlapping ORF that has not yet been associated with a protein product (Figure 2. Marnaviridae). See discussion under family description.
Biology
See discussion under family description.
Species demarcation criteria
There is only one species in the genus. The phylogenetic relationship of one classified virus isolate and numerous unclassified viruses is shown in Figure 1. Labyrnavirus.
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Figure 1. Labyrnavirus. Maximum likelihood tree of labyrnavirus RdRP amino sequences. The tree was produced using the JTT model with a gamma distribution of frequencies and invariant sites. Bootstrap values are shown where they were over 70%. Tips are labelled with filled circles for members of species; open circles represent unclassified viruses. Heterosigma akashiwo RNA virus (AY337486) was used as an outgroup. This phylogenetic tree and corresponding sequence alignment are available to download from the Resources page. |
Member species
The Member Species table enumerating important virus exemplars classified under each species of the genus is provided at the bottom of the page.
Related, unclassified viruses
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Virus name |
Accession number |
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Antarctic picorna-like virus 3 |
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Beihai picorna-like virus 50 |
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Beihai picorna-like virus 50 |
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Beihai picorna-like virus 56 |
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Beihai picorna-like virus 59 |
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Beihai picorna-like virus 59 |
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Beihai picorna-like virus 60 |
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Beihai picorna-like virus 61 |
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Beihai picorna-like virus 62 |
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Beihai picorna-like virus 63 |
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Beihai picorna-like virus 64 strain BHHQ137467 |
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Beihai picorna-like virus 64 strain BHJP54755 |
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Shahe picorna-like virus 6 strain SHWC0209c11084 |
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Shahe picorna-like virus 6 strain SHWC13532 |
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Wenzhou picorna-like virus 19 |
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Wenzhou picorna-like virus 22 |
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Wenzhou picorna-like virus 23 |
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Wenzhou picorna-like virus 24 |
Virus names and virus abbreviations are not official ICTV designations.