1887

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Volume 90, Issue 9

A novel putative virus of type B (Ascomycota: Helotiaceae) has a composite genome with endornavirus affinities Free

Abstract

Ascospore and mycelial isolates of type B were found to contain three different dsRNA molecules with approximate lengths of 11, 5 and 3 kb. The 11 kb dsRNA encoded the genome of a putative virus and is named type B RNA virus XL (GaBRV-XL). GaBRV-XL probably exists in an unencapsulated state. We identified two distinct dsRNAs (10 374 and 10 375 bp) of GaBRV-XL, both of which coded for the same putative polyprotein (3249 amino acids) and contained four regions similar to putative viral methyltransferases, DExH box helicases, viral RNA helicase 1 and RNA-dependent RNA polymerases. While a cysteine-rich region with several CxCC motifs in GaBRV-XL was similar to that of putative endornaviruses, cluster analyses of conserved regions revealed GaBRV-XL to be distinct from a broad range of viral taxa but most closely related to virus 3. Collectively, these findings suggest that GaBRV-XL represents a novel virus group related to endornaviruses.

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2009-09-01
2024-04-25
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A novel putative virus of Gremmeniella abietina type B (Ascomycota: Helotiaceae) has a composite genome with endornavirus affinities
J. Gen. Virol. 90, 2299 (2009); https://doi.org/10.1099/vir.0.011973-0
/content/journal/jgv/10.1099/vir.0.011973-0
/content/journal/jgv/10.1099/vir.0.011973-0
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