한국   대만   중국   일본 
Aspiviridae - Wikipedia Jump to content

Aspiviridae

From Wikipedia, the free encyclopedia
Ophiovirus
(top) Electron micrograph of Citrus psorosis ophiovirus; (bottom) Mirafiori lettuce big-vein virus genome
(top) Electron micrograph of Citrus psorosis ophiovirus ; (bottom) Mirafiori lettuce big-vein virus genome
Virus classification Edit this classification
(unranked): Virus
Realm : Riboviria
Kingdom: Orthornavirae
Phylum: Negarnaviricota
Class: Milneviricetes
Order: Serpentovirales
Family: Aspiviridae
Genus: Ophiovirus
Species

See text

Collapsed form of the large Freesia sneak ophiovirus particle. Negative-contrast electron micrograph (uranyl acetate); bar: 100 nm.

Aspiviridae , formerly Ophioviridae , is a family of segmented negative-strand RNA viruses which infect plants . Member viruses are characterized by an elongated and highly filamentous and flexible nucleocapsid with helical symmetry . [1] It is a monotypic taxon containing only one genus, Ophiovirus . [2] Aspiviridae is also the only family in the order Serpentovirales , which in turn is the only order in the class Milneviricetes . [3]

History [ edit ]

The name Aspiviridae derives from the Latin aspis ( snake or viper ), referring to the shape, along with the suffix for a virus family -viridae . [4] Ophiovirus derives from the Ancient Greek ophi s, "snake", with ? virus the suffix for a virus genus. [5] Likewise, Serpentovirales is from " serpent " with -virales the suffix for a virus order. [4] Milneviricetes is in honor of Robert G. Milne , the last author on the first paper describing ophioviruses. [4] [6]

Virology [ edit ]

Structure [ edit ]

The protein capsid is non- enveloped and has a constant diameter of 1500?2500 nm and a width of 3 nm, or 9 nm. The capsids form kinked circles, which can collapse to form linear duplex structures, much like a spring. [3]

Genome [ edit ]

Member viruses have segmented, negative-sense , single-stranded RNA genomes. The entire genome is 11000?12000 nucleotides long. [3] [7]

Taxonomy [ edit ]

Aspiviridae phylogenetic tree

The family has one genus, Ophiovirus , which has seven recognized species. Members of both the family and the genus are referred to as ophioviruses. [3]

References [ edit ]

  1. ^ Garcia, Maria Laura; Bo, Elena Dal; da Graca, John V.; Gago-Zachert, Selma; Hammond, John; Moreno, Pedro; Natsuaki, Tomohide; Pallas, Vicente; Navarro, Jose A.; Reyes, Carina A.; Luna, Gabriel Robles; Sasaya, Takahide; Tzanetakis, Ioannis E.; Vaira, Anna Maria; Verbeek, Martin (21 June 2017). "ICTV Virus Taxonomy Profile: Ophioviridae" . Journal of General Virology . 98 (6): 1161?1162. doi : 10.1099/jgv.0.000836 . PMC   5656789 . PMID   28635587 .
  2. ^ "Virus Taxonomy: 2018 Release" . International Committee on Taxonomy of Viruses (ICTV) . Retrieved 14 January 2019 .
  3. ^ a b c d "ICTV Report Ophioviridae" .
  4. ^ a b c Wolf, Yuri; Krupovic, Mart; Zhang, Yong Zhen ; Maes, Piet; Dolja, Valerian; Koonin, Eugene V.; Kuhn, Jens H. "Megataxonomy of negative-sense RNA viruses" (docx) . International Committee on Taxonomy of Viruses (ICTV) . Retrieved 12 January 2019 . [ dead link ]
  5. ^ "Aspiviridae ? Aspiviridae ? Negative-sense RNA Viruses - ICTV" . talk.ictvonline.org . Retrieved 2020-12-09 . [ dead link ]
  6. ^ Garcia, Maria Laura; Dal Bo, Elena; Grau, Oscar; Milne, Robert G. (1 December 1994). "The closely related citrus ringspot and citrus psorosis viruses have particles of novel filamentous morphology" . Journal of General Virology . 75 (12): 3585?3590. doi : 10.1099/0022-1317-75-12-3585 . ISSN   0022-1317 . OCLC   107178738 . PMID   7996151 .
  7. ^ ICTVdB Management (2006). 00.094.0.01. Ophiovirus. In: ICTVdB?The Universal Virus Database, version 4. Buchen-Osmond, C. (Ed), Columbia University , New York, USA.

External links [ edit ]

Retrieved from " https://en.wikipedia.org/w/index.php?title=Aspiviridae&oldid=1215880298 "