Genus: Labyrnavirus

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.

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

Exemplar isolate of the species
SpeciesVirus nameIsolateAccession numberRefSeq numberAvailable sequenceVirus Abbrev.
Aurantiochytrium single-stranded RNA virus 01aurantiochytrium single-stranded RNA virus 01AB193726NC_007522Complete genomeASSRNAV01

Virus names, the choice of exemplar isolates, and virus abbreviations, are not official ICTV designations.

Related, unclassified viruses

Virus name

Accession number

Antarctic picorna-like virus 3

NC_030234

Beihai picorna-like virus 50

KX883311

Beihai picorna-like virus 50

KX884484

Beihai picorna-like virus 56

KX884529

Beihai picorna-like virus 59

KX883321

Beihai picorna-like virus 59

KX884500

Beihai picorna-like virus 60

KX883305

Beihai picorna-like virus 61

KX883313

Beihai picorna-like virus 62

KX883309

Beihai picorna-like virus 63

KX883419

Beihai picorna-like virus 64 strain BHHQ137467

KX883355

Beihai picorna-like virus 64 strain BHJP54755

KX883382

Shahe picorna-like virus 6 strain SHWC0209c11084

KX883653

Shahe picorna-like virus 6 strain SHWC13532

KX883655

Wenzhou picorna-like virus 19

KX884381

Wenzhou picorna-like virus 22

KX884331

Wenzhou picorna-like virus 23

KX884324

Wenzhou picorna-like virus 24

KX884362

Virus names and virus abbreviations are not official ICTV designations.