Genus: Marnavirus

Genus: Marnavirus

Distinguishing features

Members of the genus form 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 mono-cistronic. 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.Marnavirus.

Figure 1.Marnavirus. Maximum likelihood tree of marnavirus 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. Aurantiochytrium single-stranded RNA virus 01 (AB193726) 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.
Heterosigma akashiwo RNA virusHeterosigma akashiwo RNA virusSOG263AY337486NC_005281Complete genomeHaRNAV

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

Related, unclassified viruses

Virus name

Accession number

Beihai picorna-like virus 57 strain BHHQ57630

KX883356

Beihai picorna-like virus 57 strain BHJP51916

KX883380

Changjiang picorna-like virus 2

KX884547

Hubei picorna-like virus 7 strain WHSF7327

KX884284

Hubei picorna-like virus 7 strain WHCC111241

KX884268

N OV 137

KY130494

Q sR OV 020

KY286100

Q sR OV 041

KY286101

Sanxia atyid shrimp virus 2 strain WHCCII13331

KX884278

Sanxia atyid shrimp virus 2 strain SXXX37884

KX883708

Wenzhou picorna-like virus 13

KX884360

Virus names and virus abbreviations are not official ICTV designations.