Genus: Ophiovirus


Genus: Ophiovirus

Distinguishing features

Since only one genus is currently recognized, the genus description corresponds to the family description.

Virion

See discussion under family description.

Genome organization and replication

See discussion under family description.

Antigenicity

See discussion under family description.

Biology

See discussion under family description.

Species demarcation criteria

The different criteria considered for species demarcation in the genus are:

  • differences in coat protein (CP) mass
  • serological relationship between CPs
  • differences in natural host range
  • different number, organization and/or size of genome segments.

Alignments between citrus psorosis virus, freesia sneak virus, Mirafiori lettuce big-vein virus, lettuce ring necrosis virus, blueberry mosaic associated virus and ranunculus white mottle virus (partial sequence) CP amino acid sequences show 31–52% identity, whereas isolates of the same species show over 92% identity. Since CPs of Mirafiori lettuce big-vein virus and tulip mild mottle mosaic virus (partial cds) share about 80% amino acid sequence identity, this may warrant the establishment of the following molecular criterion for ophiovirus species demarcation: CP amino acid sequence identity <85%.

 Member species

SpeciesVirus name(s)Exemplar isolateExemplar accession numberExemplar RefSeq numberAvailable sequenceOther isolatesOther isolate accession numbersVirus abbreviationIsolate abbreviation
Blueberry mosaic associated ophiovirusblueberry mosaic associated virusArkansas5RNA1: KJ704366; RNA2: KJ704367; RNA3: KJ704368RNA1: NC_036635; RNA2: NC_024476; RNA3: NC_036634Complete genomeBlMaV
Citrus psorosis ophioviruscitrus psorosis virusP-121RNA1: AY654892; RNA2: AY654893; RNA3: AY654894RNA1: NC_006314; RNA2: NC_006315; RNA3: NC_006316Complete genomeCPsV
Freesia sneak ophiovirusfreesia sneak virusFr220205/9RNA3: DQ885455Partial genomeFreSV
Lettuce ring necrosis ophioviruslettuce ring necrosis virusBelg-2RNA1: AY535016; RNA2: AY535017; RNA3: AY535018; RNA4: AY535019RNA1: NC_006051; RNA2: NC_006052; RNA3: NC_006053; RNA4: NC_006054Complete genomeLRNV
Mirafiori lettuce big-vein ophiovirusMirafiori lettuce big-vein virusLS301-ORNA1: AF525933; RNA2: AF525934; RNA3: AF525935; RNA4: AF525936RNA1: NC_004779; RNA2: NC_004781; RNA3: NC_004782; RNA4: NC_004780Complete genomeMLBVV
Ranunculus white mottle ophiovirusranunculus white mottle virusRn3RNA1: AF335429Partial genomeRWMV
Tulip mild mottle mosaic ophiovirustulip mild mottle mosaic virusBas/1RNA3: AY542958Partial genomeTMMMV

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