Serveur d'exploration Phytophthora

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Complete genome sequence of a novel toti-like virus from the plant-pathogenic oomycete Phytophthora cactorum.

Identifieur interne : 000264 ( Main/Exploration ); précédent : 000263; suivant : 000265

Complete genome sequence of a novel toti-like virus from the plant-pathogenic oomycete Phytophthora cactorum.

Auteurs : Anna Poimala [Finlande] ; Eeva J. Vainio [Finlande]

Source :

RBID : pubmed:32367229

Descripteurs français

English descriptors

Abstract

This report describes the complete genome sequence of a double-stranded RNA (dsRNA) virus infecting the oomycetous plant pathogen Phytophthora cactorum. The virus genome consists of a single dsRNA segment of 5699 bp with two open reading frames predicted to overlap with each other and encoding a putative capsid protein of 705 aa and an RNA-dependent RNA polymerase of 779 aa. Sequence comparisons indicated that this virus, designated as "Phytophthora cactorum RNA virus 1" (PcRV1), shares the highest sequence similarity with the unclassified Pythium splendens RNA virus 1 (58% RdRp aa sequence identity). Phylogenetic analysis revealed that these two oomycete viruses group together with Giardia lamblia virus (GVL; family Totiviridae) and several unclassified toti-like viruses from arthropods, fish and fungi. This is the first report of a toti-like virus in a member of the genus Phytophthora and the first virus characterized in P. cactorum.

DOI: 10.1007/s00705-020-04642-2
PubMed: 32367229
PubMed Central: PMC7289777


Affiliations:


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Le document en format XML

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<term>Open Reading Frames (MeSH)</term>
<term>Phylogeny (MeSH)</term>
<term>Phytophthora (virology)</term>
<term>Plant Diseases (microbiology)</term>
<term>RNA, Double-Stranded (genetics)</term>
<term>RNA, Viral (genetics)</term>
<term>Totiviridae (classification)</term>
<term>Totiviridae (genetics)</term>
<term>Totiviridae (isolation & purification)</term>
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<term>ARN double brin (génétique)</term>
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<term>Cadres ouverts de lecture (MeSH)</term>
<term>Génome viral (MeSH)</term>
<term>Maladies des plantes (microbiologie)</term>
<term>Phylogenèse (MeSH)</term>
<term>Phytophthora (virologie)</term>
<term>Séquence nucléotidique (MeSH)</term>
<term>Totiviridae (classification)</term>
<term>Totiviridae (génétique)</term>
<term>Totiviridae (isolement et purification)</term>
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<div type="abstract" xml:lang="en">This report describes the complete genome sequence of a double-stranded RNA (dsRNA) virus infecting the oomycetous plant pathogen Phytophthora cactorum. The virus genome consists of a single dsRNA segment of 5699 bp with two open reading frames predicted to overlap with each other and encoding a putative capsid protein of 705 aa and an RNA-dependent RNA polymerase of 779 aa. Sequence comparisons indicated that this virus, designated as "Phytophthora cactorum RNA virus 1" (PcRV1), shares the highest sequence similarity with the unclassified Pythium splendens RNA virus 1 (58% RdRp aa sequence identity). Phylogenetic analysis revealed that these two oomycete viruses group together with Giardia lamblia virus (GVL; family Totiviridae) and several unclassified toti-like viruses from arthropods, fish and fungi. This is the first report of a toti-like virus in a member of the genus Phytophthora and the first virus characterized in P. cactorum.</div>
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