The families of rna viruses are as follows. The international committee on taxonomy of viruses classifies rna viruses as those that belong to group iii group iv or group v of the baltimore cla.
The number of proteins in the replicase complex differs among virus families.
Rna virus families. This lesson will cover an important historical discovery in the history of viruses hepatitis e and how rna viruses can affect your dinner plate. In brasier a garcía sastre a lemon s ed cellular signaling and innate immune responses to rna virus infections. There may also be a requirement for host cell proteins.
Notable human diseases caused by rna viruses include the common cold influenza sars mers covid 19 dengue virus hepatitis c hepatitis e west nile fever ebola virus disease rabies polio and measles. An rna virus is a virus that has rna as its genetic material. Picornaviridae arteriviridae astroviridae reoviridae arenaviridae bornaviridae flaviviridae orthomyxoviridae paramyxoviridae bunyaviridae caliciviridae rhabdoviridae togaviridae filoviridae coronaviridae and hepeviridae.
Thus the family reoviridae contains the monopartite plant infecting virus genera fijivirus phytoreovirus and oryzavirus along with several genera of viruses infecting animals and humans. We ll explore the birnaviridae hepeviridae and. Distinguishing characteristics differences and similarities p 197 210.
This nucleic acid is usually single stranded rna but may be double stranded rna. Enterovirus rhinovirus hepatovirus cardiovirus aphthovirus poliovirus parechovirus erbovirus kobuvirus teschovirus coxsackie. The first rna virus to be discovered was the tmv virus which causes tobacco mosaic disease in tobacco plants.
Double stranded rna viruses include the rotaviruses known globally as a common cause of gastroenteritis in young children and bluetongue virus an economically significant pathogen of cattle and sheep. Examples of rna viruses virus family examples common names capsid naked enveloped capsid symmetry nucleic acid type group 1. The name of this family come from a town in uganda east africa spherical or pleomorphic enveloped virions up to triple segmented ss negative sense rna replication occurs int he cytoplasm virus bud from golgi membrane most transmitted by arthropods genetic reassortment with closely related viruses labile in the env.
The family reoviridae is the largest and most diverse dsrna virus family in terms of host range. Viruses with isometric double stranded rna dsrna include two families that contain genera of viruses causing disease in plants and some viruses that infect plant pathogenic fungi. The rna virus group can be subdivided based on the type of rna that serves as the genome.
The families of rna viruses rna viruses include single and double stranded genomes as well as retroviruses a single stranged virus that requires reverse transcription to replicate. Asm press washington dc. Naked icosahedral ds iii 2.
Positive or plus strand rna viruses have genomes that are functional mrnas.
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