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Iflaviridae

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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 15 species in this family.[2][1][3]

Structure

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Structure of the family Iflaviridae slow bee paralysis virus (SBPV) virion and the icosahedral asymmetric unit. Genome map.
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Structure of the family Iflaviridae infectious flacherie virus (IFV) virion and the icosahedral asymmetric unit.
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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 15 species:[1][5]

References

  1. ^ a b c d e f "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. ^ a b c d "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. ^ 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.
  7. ^ 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.

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Iflaviridae: Brief Summary

provided by wikipedia EN

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. There is one genus (Iflavirus) and 15 species in this family.

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Iflaviridae

provided by wikipedia FR

Iflavirus est un genre de virus, le seul de la famille des Iflaviridae, dans l’ordre des Picornavirales.

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Carte du génome du genre Iflavirus

Lors de la création du genre en 2002, sa position taxinomique était douteuse[2]. L'International Committee on Taxonomy of Viruses, considérait le genre Iflavirus comme seulement « proche des Picorna- et Dicistroviridae ». Certains considèrent plutôt que Iflavirus était l'unique genre d'une famille des Iflaviridae (ou Iflaviridés), de l'ordre des Picornavirales[3].

En 2008, l’ICTV adopte la création de la famille des Iflaviridae[1], et y déplace le genre Iflavirus[2].

Le nom Iflavirus dérive de celui de l'espèce type du genre, à savoir Infectious flacherie virus, virus de la flacherie infectieuse.

Les espèces du genre Iflavirus sont Deformed wing virus (virus des ailes déformées), Ectropis obliqua virus, Infectious flacherie virus (virus de la flacherie infectieuse), Perina nuda virus, Sacbrood virus (virus du couvain sacciforme) et Varroa destructor virus-1 (un virus transporté par l'acarien Varroa destructor).

Notes et références

  • (en) Cet article est partiellement ou en totalité issu de l’article de Wikipédia en anglais intitulé .
  1. a et b ICTV. International Committee on Taxonomy of Viruses. Taxonomy history. Published on the Internet https://talk.ictvonline.org/., consulté le 5 février 2021
  2. a b et c ICTV. International Committee on Taxonomy of Viruses. Taxonomy history. Published on the Internet https://talk.ictvonline.org/., consulté le 5 février 2021
  3. Voir picornavirales.org, qui renvoie à Le Gall, O., Christian, P., Fauquet, C.M., King, A.M.Q., Knowles, N.J., Nakashima, N., Stanway, G., Gorbalenya, E.E. (2008). « Picornavirales, a proposed order of positive-sense single-stranded RNA viruses with a pseudo T = 3 virion architecture », Archives of Virology 153: 715-727, sommaire en ligne.

Référence biologique

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wikipedia FR

Iflaviridae: Brief Summary

provided by wikipedia FR

Iflavirus est un genre de virus, le seul de la famille des Iflaviridae, dans l’ordre des Picornavirales.

 src= Carte du génome du genre Iflavirus

Lors de la création du genre en 2002, sa position taxinomique était douteuse. L'International Committee on Taxonomy of Viruses, considérait le genre Iflavirus comme seulement « proche des Picorna- et Dicistroviridae ». Certains considèrent plutôt que Iflavirus était l'unique genre d'une famille des Iflaviridae (ou Iflaviridés), de l'ordre des Picornavirales.

En 2008, l’ICTV adopte la création de la famille des Iflaviridae, et y déplace le genre Iflavirus.

Le nom Iflavirus dérive de celui de l'espèce type du genre, à savoir Infectious flacherie virus, virus de la flacherie infectieuse.

Les espèces du genre Iflavirus sont Deformed wing virus (virus des ailes déformées), Ectropis obliqua virus, Infectious flacherie virus (virus de la flacherie infectieuse), Perina nuda virus, Sacbrood virus (virus du couvain sacciforme) et Varroa destructor virus-1 (un virus transporté par l'acarien Varroa destructor).

license
fr
copyright
http://creativecommons.org/licenses/by-sa/3.0/
original
visit source
partner site
wikipedia FR