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Archives of Virology

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13.10.2022 | Annotated Sequence Record

Molecular characterization of a novel endornavirus isolated from Ophiostoma bicolor associated with bark beetles

verfasst von: Yuyao Zhu, Anna Lu, Zheng Wang, Quan Lu, Chengming Yu, Huixiang Liu

Erschienen in: Archives of Virology | Ausgabe 12/2022

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Abstract

Ophiostoma bicolor is a pathogenic fungus associated with bark beetles that can cause serious damage to host plants. In this study, a novel fungal virus, “Ophiostoma bicolor endornavirus 1” (ObEV1), was obtained from O. bicolor, and its complete genome sequence was determined. ObEV1 has a single-stranded positive-sense (+ ss) RNA genome of 10,119 nucleotides. Sequence annotation and comparison showed that the viral genome has a single large open reading frame (ORF) encoding a polyprotein of 362.48 kDa. The polyprotein contains seven conserved domains: RNA-dependent RNA polymerase (RdRp), viral RNA helicase 1 (VHel1), viral methyltransferase (VMet), DEAD-like helicase (DEXDc), gliding-GltJ (G1), large tegument protein UL36 (PHA), and YlqF-related-GTPase (Y). Sequence comparisons and phylogenetic analysis showed that ObEV1 is a novel mycovirus belonging to the genus Betaendornavirus of the family Endornaviridae. This is the first report of a mycovirus in the ophiostomatoid fungus O. bicolor.

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Titel: Molecular characterization of a novel endornavirus isolated from Ophiostoma bicolor associated with bark beetles
verfasst von: Yuyao Zhu
Anna Lu
Zheng Wang
Quan Lu
Chengming Yu
Huixiang Liu
Publikationsdatum: 13.10.2022
Verlag: Springer Vienna
Erschienen in: Archives of Virology / Ausgabe 12/2022
Print ISSN: 0304-8608
Elektronische ISSN: 1432-8798
DOI: https://doi.org/10.1007/s00705-022-05613-5

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