Abstract
The complete sequence of a novel endornavirus (Botrytis cinerea endornavirus 1, BcEV1) from the phytopathogenic fungus Botrytis cinerea strain HBtom-372 was determined. The BcEV1 coding strand is 11,557 nucleotides long, possessing an open reading frame (ORF) that codes for a polyprotein of 3,787 amino acid residues and lacks a site-specific nick. The polyprotein contains viral methyltransferase (MTR) domain, a cysteine-rich region (CRR), two putative viral helicase (DEXDc-like and Hel-1) domains, and an RNA-dependent RNA polymerase_2 (RdRp_2) domain. In phylogenetic analysis, BcEV1 clustered with several fungal endornaviruses, forming an independent clade, and it was detected in 4.2% of B. cinerea strains collected from central China.
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