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. 2021 Feb;166(2):633-637.
doi: 10.1007/s00705-020-04886-y. Epub 2020 Nov 22.

Molecular characterization of a novel mitovirus from the plant‑pathogenic fungus Botryosphaeria dothidea

Hong Liu #  1 , Miao Liu #  1 , Hongjian Zhu  1 , Jie Zhong  1 , Xiaolan Liao  2 , Qian Zhou  3
Affiliations

Molecular characterization of a novel mitovirus from the plant‑pathogenic fungus Botryosphaeria dothidea

Hong Liu et al. Arch Virol. 2021 Feb.

Abstract

Here, a novel mycovirus, Botryosphaeria dothidea mitovirus 1 (BdMV1), was isolated from a phytopathogenic fungus, Botryosphaeria dothidea, and its molecular characteristics were determined. BdMV1 has a genome of 2,667 nt that contains a single large open reading frame (ORF) using the fungal mitochondrial genetic code. The ORF encodes an RNA-dependent RNA polymerase (RdRp) of 727 amino acids with a molecular mass of 81.64 kDa. BLASTp analysis revealed that the RdRp domain of BdMV1 has 39.59% and 39.18% sequence identity to Plasmopara viticola associated mitovirus 43 and Setosphaeria turcica mitovirus 1, respectively. Phylogenetic analysis further suggested that BdMV1 is a new member of the genus Mitovirus within the family Mitoviridae. To the best of our knowledge, this is the first report of a mitovirus in B. dothidea.

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