''Sedoreoviridae'' (''sedo'' = smooth) is a family of the ''
Reovirales
''Reovirales'' is an Order (biology), order of double-stranded RNA viruses. Member viruses, called reoviruses, have a wide Host (biology), host range, including vertebrates, invertebrates, plants, protists and fungi. They lack lipid Viral envelop ...
'' order of viruses.
Viruses in this family are distinguished by the absence of a turreted protein on the inner
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 m ...
to produce a smooth surface.
Taxonomy
The family contains the following genera:
* ''
Cardoreovirus''
* ''
Crabreovirus''
* ''
Mimoreovirus''
* ''
Orbivirus''
* ''
Phytoreovirus
''Phytoreovirus'' is a genus of viruses, in the order ''Reovirales'', in the family ''Sedoreoviridae''. They are non-turreted reoviruses that are major agricultural pathogens, particularly in Asia. Oryza sativa for RDV and RGDV, dicotyledonous f ...
''
* ''
Rotavirus
Rotaviruses are the most common cause of diarrhea, diarrhoeal disease among infants and young children. Nearly every child in the world is infected with a rotavirus at least once by the age of five. Immunity (medical), Immunity develops with ...
''
* ''
Seadornavirus''
Characteristics
Like other members of the ''
Reovirales
''Reovirales'' is an Order (biology), order of double-stranded RNA viruses. Member viruses, called reoviruses, have a wide Host (biology), host range, including vertebrates, invertebrates, plants, protists and fungi. They lack lipid Viral envelop ...
'' order, viruses of the ''Sedoreoviridae'' family are made of naked, icosahedral capsids containing 10-12 segments of linear double-stranded RNA (dsRNA). The Baltimore System of viral classification categorizes ''Reovirales'' in Group III.
Importance
Viruses classified in the ''Sedoreoviridae'' family infect a wide range of plants and animals, including some that can infect humans. There is not only the potential of a few of these viruses to cause human disease, but also to reduce the supply of crops and livestock.
Viruses

Genus ''Cardoreovirus''
Eriocheir sinensis reovirus was isolated out of a Chinese mitten crab (''
Eriocheir sinensis''). No currently known associated disease.
Genus ''Mimoreovirus''
Microsomonas pusilla reovirus was isolated from the marine protist ''
Micromonas pusilla
''Micromonas'' is a genus of green algae in the family '' Mamiellaceae''.
''Micromonas'' is a widespread prasinophyte alga that is very small in size, motile, and phototactic. Before characterization and naming of a second species, ''Micromonas ...
''.
Genus ''Orbivirus''
Some ''
Orbivirus'' infect livestock with high rates of morbidity and mortality.
Includes:
Bluetongue virus,
African horse sickness virus,
Epizootic hemorrhagic disease
Epizootic hemorrhagic disease (EHD) is a hemorrhagic disease of white-tailed deer (''Odocoileus virginianus'') caused by an infection of a virus from the genus '' Orbivirus'' subsequently called '' Epizootic hemorrhagic disease virus'' (EHDV). It ...
virus, among others.
Genus ''Phytoreovirus''
Known
phytoreovirus
''Phytoreovirus'' is a genus of viruses, in the order ''Reovirales'', in the family ''Sedoreoviridae''. They are non-turreted reoviruses that are major agricultural pathogens, particularly in Asia. Oryza sativa for RDV and RGDV, dicotyledonous f ...
es are plant pathogens causing dwarfism and the formation of tumors.
Included:
Rice dwarf virus,
Rice gall dwarf virus, and
Wound tumor virus.
Genus ''Rotavirus''
Rotavirus
Rotaviruses are the most common cause of diarrhea, diarrhoeal disease among infants and young children. Nearly every child in the world is infected with a rotavirus at least once by the age of five. Immunity (medical), Immunity develops with ...
A-E cause infantile gastroenteritis in humans and farm animals.
Genus ''Seadornavirus''
Many known
Seadornaviruses cause encephalitis in humans.
Included:
Banna virus,
Kadipiro virus, and
Liao ning virus.
References
{{Taxonbar, from=Q16992486
Reoviruses
Virus families