''Duplornaviricota'' is a phylum of RNA viruses, which contains all

double-stranded RNA viruses Double-stranded RNA viruses (dsRNA viruses) are a Polyphyly, polyphyletic group of viruses that have Nucleic acid double helix, double-stranded genomes made of ribonucleic acid. The double-stranded genome is used to transcribe a Sense (molecular ...

, except for those in phylum ''

Pisuviricota ''Pisuviricota'' is a phylum of RNA viruses that includes all positive-strand and double-stranded RNA viruses that infect eukaryotes and are not members of the phylum '' Kitrinoviricota,'' ''Lenarviricota'' or '' Duplornaviricota.'' The name of ...

.'' Characteristic of the group is a

viral capsid A capsid is the protein shell of a virus, enclosing its genetic material. It consists of several oligomeric (repeating) structural subunits made of protein called protomers. The observable 3-dimensional morphological subunits, which may or ma ...

composed of 60 homo- or heterodimers of capsid protein on a pseudo-T=2 lattice. Duplornaviruses infect both

prokaryotes A prokaryote () is a single-celled organism that lacks a nucleus and other membrane-bound organelles. The word ''prokaryote'' comes from the Greek πρό (, 'before') and κάρυον (, 'nut' or 'kernel').Campbell, N. "Biology:Concepts & Connec ...

and

eukaryotes Eukaryotes () are organisms whose cells have a nucleus. All animals, plants, fungi, and many unicellular organisms, are Eukaryotes. They belong to the group of organisms Eukaryota or Eukarya, which is one of the three domains of life. Bacte ...

. The name of the group derives from Italian ''duplo'' which means double (a reference to double-stranded), ''rna'' for the type of virus, and -''viricota'' which is the suffix for a virus phylum.

Classes

The following classes are recognized: * ''

Chrymotiviricetes ''Ghabrivirales'' is an order of double-stranded RNA viruses. It is the only order in the class ''Chrysmotiviricetes''. The name of the class is a portmanteau of member families: ''chrys''oviridae, ''m''egabirnaviridae, and ''toti''viridae; and - ...

'' * ''

Resentoviricetes ''Reoviridae'' is a family of double-stranded RNA viruses. Member viruses have a wide host range, including vertebrates, invertebrates, plants, protists and fungi. They lack lipid envelopes and package their segmented genome within multi-layered ...

'' * ''

Vidaverviricetes ''Cystovirus'' is a genus of double-stranded RNA viruses which infects bacteria. It is the only genus in the family ''Cystoviridae.'' The name of the group c''ysto'' derives from Greek ''kystis'' which means bladder or sack. There are seven spec ...

References

Viruses {{Virus-stub