Divavirus

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Divavirus
Description de l'image Defaut 2.svg.
Classification ICTV
Realm Riboviria
Règne Orthornavirae
Embranchement Kitrinoviricota
Classe Alsuviricetes
Ordre Tymovirales
Famille Betaflexiviridae
Sous-famille Trivirinae

Genre

Divavirus
ICTV 2015[1]

Espèces de rang inférieur

Voir texte

Divavirus est un genre de virus de la famille des Betaflexiviridae, sous-famille des Trivirinae, qui comprend trois espèces acceptées par l'ICTV, dont l'espèce-type, Diuris virus A. Ce sont des virus à ARN à simple brin de polarité positive, rattachés au groupe IV de la classification Baltimore. Le génome est monopartite. Les virions sont des particules filamenteuses, très flexueuses.

Ces virus infectent diverses espèces d'angiospermes (phytovirus). On ne leur connaît aucun vecteur biologique.

Étymologie

Le nom générique, « Divavirus », dérive du nom de l'espèce-type, Diuris virus A [2].

Structure

Les virions sont des particules non-envelopées, flexueuses, filamenteuses, de 640 nm de long et 12 nm de diamètre[3].

Le génome, monopartite, est constitué d'une molécule d'ARN à simple brin de polarité positive, linéaire, de 6,5 à 7,5 kb. L'extrémité 3' est polyadénylée. Cet ARN code au moins trois protéines[3].

Liste des espèces et non-classés

Selon NCBI (14 février 2021)[4] :

Notes et références

  1. ↑ ICTV. International Committee on Taxonomy of Viruses. Taxonomy history. Published on the Internet https://talk.ictvonline.org/., consulté le 14 février 2021
  2. ↑ (en) « Revision of family Betaflexiviridae,order Tymovirales », sur talk.ictvonline.org, International Committee on Taxonomy of Viruses (ICTV), (consulté le ).
  3. ↑ a et b (en) « Divavirus », sur ViralZone (consulté le ).
  4. ↑ NCBI, consulté le 14 février 2021

Liens externes

Sur les autres projets Wikimedia :

  • (en) « Divavirus », sur ViralZone (consulté le ).

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