Iflaviridae

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Iflaviridae
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TEM of deformed wing virus (DWV) virions bar line is 100 nm
Virus classification Red Pencil Icon.png
(unranked): Virus
Realm: Riboviria
Kingdom: Orthornavirae
Phylum: Pisuviricota
Class: Pisoniviricetes
Order: Picornavirales
Family: Iflaviridae
Genus:Iflavirus
Species

See text

Iflaviridae is a family of positive sense RNA viruses insect-infecting viruses. Some of the insects commonly infected by iflaviruses include aphids, leafhoppers, flies, bees, ants, silkworms and wasps. The name "Ifla" is derived from the name "Infectious flacherie virus", a member species. [1] There is one genus (Iflavirus) and 16 species in this family. [2] [1] [3]

Contents

Structure

Structure of the family Iflaviridae slow bee paralysis virus (SBPV) virion and the icosahedral asymmetric unit. Genome map. JVI.00680-16 F1.large.jpg
Structure of the family Iflaviridae slow bee paralysis virus (SBPV) virion and the icosahedral asymmetric unit. Genome map.
Structure of the family Iflaviridae infectious flacherie virus (IFV) virion and the icosahedral asymmetric unit. OPSR.Ifl.Fig1.v1.png
Structure of the family Iflaviridae infectious flacherie virus (IFV) virion and the icosahedral asymmetric unit.
IFV genome map OPSR.Ifl.Fig2.Iflaviridae v3.png-640x480.png
IFV genome map

Members of this family are insect-infecting viruses that consist of positive single-strand RNA genomes translated into a single polyprotein of ~3000 amino acids long. It encodes helicase, protease and RNA-dependent RNA polymerase enzymes and four structural proteins (VP1–4). The non-enveloped capsid has an icosahedral T=pseudo3 symmetry and is around 30 nm in diameter. VP1, VP2 and VP3 form the outer portion, with VP4 located internally. [1] [3] Genomes are linear and non-segmented, around 8.8-9.7kb in length. [1] [3]

Life cycle

Viral replication is cytoplasmic. Entry into the host cell is achieved by attachment to host receptors, which mediates endocytosis. Replication follows the positive stranded RNA virus replication model. Positive stranded RNA virus transcription is the method of transcription. Translation takes place by ribosomal skipping. Insects serve as the natural host. [1] [3]

Pathogenicity

Several viruses in this family are economically important because they are highly pathogenic to their honeybee and silkworm hosts, while others (including Dinocampus coccinellae paralysis virus, Nasonia vitripennis virus and Venturia canescens picorna-like virus) appear to cause little or no symptoms. [4]

Taxonomy

The family Iflaviridae contains one genus, Iflavirus, with the following 16 species: [1] [5]

Related Research Articles

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Parvoviruses are a family of animal viruses that constitute the family Parvoviridae. They have linear, single-stranded DNA (ssDNA) genomes that typically contain two genes encoding for a replication initiator protein, called NS1, and the protein the viral capsid is made of. The coding portion of the genome is flanked by telomeres at each end that form into hairpin loops that are important during replication. Parvovirus virions are small compared to most viruses, at 23–28 nanometers in diameter, and contain the genome enclosed in an icosahedral capsid that has a rugged surface.

<span class="mw-page-title-main">Poliovirus</span> Enterovirus

A poliovirus, the causative agent of polio, is a serotype of the species Enterovirus C, in the family of Picornaviridae. There are three poliovirus serotypes: types 1, 2, and 3.

<span class="mw-page-title-main">Picornavirus</span> Family of viruses

Picornaviruses are a group of related nonenveloped RNA viruses which infect vertebrates including fish, mammals, and birds. They are viruses that represent a large family of small, positive-sense, single-stranded RNA viruses with a 30 nm icosahedral capsid. The viruses in this family can cause a range of diseases including the common cold, poliomyelitis, meningitis, hepatitis, and paralysis.

<i>Bunyavirales</i> Order of RNA viruses

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<i>Birnaviridae</i> Family of viruses

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<i>Dicistroviridae</i> Family of viruses

Dicistroviridae is a family of viruses in the order Picornavirales. Invertebrates, including aphids, leafhoppers, flies, bees, ants, and silkworms, serve as natural hosts. There are 15 species in this family, assigned to three genera. Diseases associated with this family include: DCV: increased reproductive potential. extremely pathogenic when injected with high associated mortality. CrPV: paralysis and death.

<i>Cardiovirus</i> Genus of viruses

Cardiovirus are a group of viruses within order Picornavirales, family Picornaviridae. Vertebrates serve as natural hosts for these viruses.

<i>Deformed wing virus</i> Species of virus

Deformed wing virus (DWV) is an RNA virus, one of 22 known viruses affecting honey bees. While most commonly infecting the honey bee, Apis mellifera, it has also been documented in other bee species, like Bombus terrestris, thus, indicating it may have a wider host specificity than previously anticipated. The virus was first isolated from a sample of symptomatic honeybees from Japan in the early 1980s and is currently distributed worldwide. It is found also in pollen baskets and commercially reared bumblebees. Its main vector in A. mellifera is the Varroa mite. It is named after what is usually the most obvious deformity it induces in the development of a honeybee pupa, which is shrunken and deformed wings, but other developmental deformities are often present.

<i>Marnaviridae</i> Family of viruses

Marnaviridae is a family of positive-stranded RNA viruses in the order Picornavirales. The first species of this family that was isolated is Heterosigma akashiwo RNA virus (HaRNAV) in the genus Marnavirus, that infects the toxic bloom-forming Raphidophyte alga, Heterosigma akashiwo. Using a sequence-based framework an additional twenty marine RNA viruses have been added to the family.

<i>Ascoviridae</i> Family of viruses

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Endornaviridae is a family of viruses. Plants, fungi, and oomycetes serve as natural hosts. There are 31 species in this family, assigned to 2 genera. Members of Alphaendornavirus infect plants, fungi and the oomycete Phytophthora sp., members of Betaendornavirus infect ascomycete fungi.

Cricket paralysis virus (CrPV) was initially discovered in Australian field crickets by Carl Reinganum and his colleagues at the Victorian Plant Research Institute. The paralytic disease spread rapidly through a breeding colony as well as through a laboratory population causing about 95% mortality. This was the first recorded isolate of the virus and is generally referred to as CrPVvic to distinguish it from subsequent isolates.

<i>Virgaviridae</i> Family of viruses

Virgaviridae is a family of positive-strand RNA viruses. Plants serve as natural hosts. The name of the family is derived from the Latin word virga (rod), as all viruses in this family are rod-shaped. There are currently 59 species in this family, divided among seven genera.

Dinocampus coccinellae paralysis virus (DcPV) is a single-stranded, positive-sense RNA virus of insects, in the picorna-like virus family Iflaviridae, which was first characterised in 2015. It asymptomatically infects the parasitic braconid wasp, Dinocampus coccinellae, and has been proposed to be associated with the paralytic effect the wasp has on its host, the spotted lady beetle, Coleomegilla maculata, which it turns into a so-called "zombie bodyguard" for its pupa.

Alphabaculovirus is a genus of viruses in the family Baculoviridae. The natural hosts of species in this family are invertebrates, among them winged insects, and decapods. However, species in this genus have been isolated only from Lepidoptera. There are 56 species in the genus.

<i>Alphanodavirus</i> Genus of viruses

Alphanodavirus is a genus of non-enveloped positive-strand RNA viruses in the family Nodaviridae. Insects, mammals, and fishes serve as natural hosts. Diseases associated with this genus include: Nodamura virus paralysis in infected wax moth larvae. Member viruses can also provoke paralysis and death to suckling mice and suckling hamsters. There are five species in this genus.

<i>Slow bee paralysis virus</i> Species of virus

Slow bee paralysis virus (SBPV) is a virus discovered in England in 1974 that infects honeybees, bumblebees, and silkworms through Varroa destructor mite infestations. The virus causes paralysis in the front two pairs of legs of adult bees eventually killing its hosts. The virus is in the iflaviridae family of viruses. Infection by iflaviridae viruses is among the leading cause of death of honeybee colonies. As bees and silkworms are of great economic and biological importance, the virus is the subject of ongoing research.

Triatoma virus (TrV) is a virus belonging to the insect virus family Dicistroviridae. Within this family, there are currently 3 genera and 15 species of virus. Triatoma virus belongs to the genus Cripavirus. It is non-enveloped and its genetic material is positive-sense, single-stranded RNA. The natural hosts of triatoma virus are invertebrates. TrV is a known pathogen to Triatoma infestans, the major vector of Chagas disease in Argentina which makes triatoma virus a major candidate for biological vector control as opposed to chemical insecticides. Triatoma virus was first discovered in 1984 when a survey of pathogens of triatomes was conducted in the hopes of finding potential biological control methods for T. infestans.

<i>Black queen cell virus</i> Species of virus

The black queen cell virus (BQCV) is a virus that infects honey bees, specifically Apis mellifera, Apis florea, and Apis dorsata. Infection of the latter two species is more recent and can be attributed to genetic similarity and geographical closeness. It is important to learn about this virus because it is one of the most common bee viruses and bees are the most important pollinators. The agricultural industry depends on the bee's pollination to increase its economic value.

Nucleocytoviricota is a phylum of viruses. Members of the phylum are also known as the nucleocytoplasmic large DNA viruses (NCLDV), which serves as the basis of the name of the phylum with the suffix -viricota for virus phylum. These viruses are referred to as nucleocytoplasmic because they are often able to replicate in both the host's cell nucleus and cytoplasm.

References

  1. 1 2 3 4 5 6 "Iflaviridae". ICTV Online (10th) Report.
  2. Valles, SM; Chen, Y; Firth, AE; Guérin, DMA; Hashimoto, Y; Herrero, S; de Miranda, JR; Ryabov, E; ICTC Report Consortium (April 2017). "ICTV Virus Taxonomy Profile: Iflaviridae". The Journal of General Virology. 98 (4): 527–528. doi:10.1099/jgv.0.000757. PMC   5657024 . PMID   28382900.
  3. 1 2 3 4 "Viral Zone". ExPASy. Retrieved 15 June 2015.
  4. Dheilly NM, Maure F, Ravallec M, et al. (2015), "Who is the puppet master? Replication of a parasitic wasp-associated virus correlates with host behaviour manipulation", Proceedings of the Royal Society B , 282 (1803): 20142773, doi:10.1098/rspb.2014.2773, PMC   4345448 , PMID   25673681
  5. "Virus Taxonomy: 2020 Release". International Committee on Taxonomy of Viruses (ICTV). March 2021. Retrieved 20 May 2021.
  6. Miranda, Joachim R.; Granberg, Fredrik; Onorati, Piero; Jansson, Anna; Berggren, Asa (25 February 2021). "Virus Prospecting in Crickets - Discovery and Strain Divergence of a Novel Iflavirus in Wild and Cultivated Acheta domesticus". Viruses. 13 (3): 364. doi: 10.3390/v13030364 . PMC   7996529 . PMID   33669085.
  7. Geng, Peng; Li, Wenli; Lin, Lan; Miranda, Joachim R. de; Emrich, Scott; An, Lijia; Terenius, Olle (17 March 2014). "Genetic Characterization of a Novel Iflavirus Associated with Vomiting Disease in the Chinese Oak Silkmoth Antheraea pernyi". PLOS ONE. 9 (3): e92107. Bibcode:2014PLoSO...992107G. doi: 10.1371/journal.pone.0092107 . ISSN   1932-6203. PMC   3956879 . PMID   24637949.
  8. Millán-Leiva, Anabel; Jakubowska, Agata K.; Ferré, Juan; Herrero, Salvador (1 January 2012). "Genome sequence of SeIV-1, a novel virus from the Iflaviridae family infective to Spodoptera exigua". Journal of Invertebrate Pathology. 109 (1): 127–133. doi:10.1016/j.jip.2011.10.009. ISSN   1096-0805. PMID   22041201.