Complete genome sequence and characterisation of a novel flexivirus infecting the necrotrophic conifer pathogen Diplodia sapinea.

ABSTRACT: Using total RNA sequencing, we detected a novel RNA virus infecting a Finnish isolate of the fungal conifer pathogen Diplodia sapinea, and its genome sequence was verified by Sanger sequencing. This virus, which we have named "Diplodia sapinea flexi-like virus 1" (DsFLV1), has a 7,494-nucleotide-long positive-sense single-stranded RNA genome, excluding the poly(A) tail. The largest open reading frame (ORF1) encodes a replication-associated polyprotein (RP) that contains conserved domains characteristic of members of the order Tymovirales, including viral methyltransferase (Mtr), viral helicase (Hel), and RNA-dependent RNA polymerase (RdRP) domains. Four smaller ORFs were also identified. ORF2 potentially encodes a capsid protein, while the other three ORFs, initiated by alternative start c

SUBMITTER: Sutela S 

PROVIDER: S-EPMC12084271 | biostudies-literature | 2025 May

REPOSITORIES: biostudies-literature