A novel gammapartitivirus from the entomopathogenic fungus Metarhizium brunneum
Ping Wang1, Guogen Yang2, Najie Shi1
1Anhui Provincial Key Laboratory of Microbial Pest Control, Anhui Agricultural University, Hefei, 230036, China.
Abstract:
Here, we report a novel partitivirus infecting Metarhizium brunneum, which was designated "Metarhizium brunneum partitivirus 2" (MbPV2). The complete genome of MbPV2 consists of two segments, dsRNA1 and dsRNA2, with each dsRNA possessing a single open reading frame (ORF). dsRNA1 (1,775 bp) encodes a conserved RNA-dependent RNA polymerase (RdRp) with the highest sequence similarity to Plasmopara viticola associated partitivirus 1 (PvAPV1), while dsRNA2 (1,568 bp) encodes a coat protein (CP) with the highest sequence similarity to Colletotrichum partitivirus 1 (CtParV1). Phylogenetic analysis based on RdRp sequences showed that MbPV2 is a new member of the genus Gammapartitivirus, family Partitiviridae. This is the first report of a gammapartitivirus that infects the entomopathogenic fungus Metarhizium brunneum.
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