Molecular characterization of a novel fusarivirus infecting the edible fungus Auricularia heimuer.
Arch Virol
; 165(11): 2689-2693, 2020 Nov.
Article
en En
| MEDLINE
| ID: mdl-32812093
ABSTRACT
Here, we describe a novel mycovirus, Auricularia heimuer fusarivirus 1 (AhFV1), isolated from the edible fungus Auricularia heimuer strain CCMJ1296. The virus has a single-stranded positive-sense [+ssRNA] genome of 7,127 nucleotides containing two overlapping open reading frames (ORFs) and a poly(A) tail. The large ORF1 encodes a polyprotein of 1,637 amino acids (aa) with conserved RNA-dependent RNA polymerase (RdRp) and DEAD-like helicase superfamily (DEXDc) domains. ORF2 encodes a putative 633-aa protein with unknown function. A BLAST search showed that the nucleotide sequence of the AhFV1 genome is 41.28% identical to that of Sclerotium rolfsii fusarivirus 2 and 40.49% identical to that of Sclerotium rolfsii fusarivirus 1. Phylogenetic analysis based on RdRp and helicase (Hel) sequences indicated that AhFV1 is related to unclassified mycoviruses and other fusariviruses. Our data suggest that AhFV1 should be classified as a member of the newly proposed family "Fusariviridae". This is the second virus and the first full genome sequence of a fusarivirus from A. heimuer.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Filogenia
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Virus ARN
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Basidiomycota
/
Virus Fúngicos
País/Región como asunto:
Asia
Idioma:
En
Revista:
Arch Virol
Año:
2020
Tipo del documento:
Article
País de afiliación:
China