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Archives of Virology
Published in: Archives of Virology 2/2019

01-02-2019 | Brief Report

Phytophthora infestans RNA virus 2, a novel RNA virus from Phytophthora infestans, does not belong to any known virus group

Authors: Guohong Cai, Kevin Myers, William E. Fry, Bradley I. Hillman

Published in: Archives of Virology | Issue 2/2019

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Abstract

Phytophthora infestans is the causal agent of potato and tomato late blight. In this study, we obtained the complete genome sequence of a novel RNA virus from this plant pathogen, tentatively named “Phytophthora infestans RNA virus 2” (PiRV-2). The PiRV-2 genome is 11,170 nt in length and lacks a polyA tail. It contains a single large open reading frame (ORF) with short 5’ and 3’ untranslated regions. The ORF is predicted to encode a polyprotein of 3710 aa (calculated molecular weight, 410.94 kDa). This virus lacks significant similarity to any other known viruses, even in the conserved RNA-dependent RNA polymerase region. Phylogenetic analysis demonstrated that it did not cluster with any known virus group. We conclude that PiRV-2 belongs to a new virus family yet to be described. This virus was found to be faithfully transmitted through asexual reproduction.
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Metadata
Title
Phytophthora infestans RNA virus 2, a novel RNA virus from Phytophthora infestans, does not belong to any known virus group
Authors
Guohong Cai
Kevin Myers
William E. Fry
Bradley I. Hillman
Publication date
01-02-2019
Publisher
Springer Vienna
Published in
Archives of Virology / Issue 2/2019
Print ISSN: 0304-8608
Electronic ISSN: 1432-8798
DOI
https://doi.org/10.1007/s00705-018-4050-0

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