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  • Title: Full genome sequence of a new three-segment gammapartitivirus from the phytopathogenic fungus Alternaria tenuissima on cotton in China.
    Author: Liang Z, Wang X, Hua H, Cao W, Zhou T, Zhao C, Wu X.
    Journal: Arch Virol; 2021 Mar; 166(3):973-976. PubMed ID: 33427965.
    Abstract:
    In this study, a new double-stranded RNA (dsRNA) virus, Alternaria tenuissima partitivirus 1 (AttPV1), was isolated from Alternaria tenuissima strain XJ-BZ-2-6, a phytopathogenic fungus infecting cotton in China. The genome of AttPV1 comprised three dsRNAs of 1,785 nt (dsRNA1), 1,545 nt (dsRNA2), and 1,537 nt (dsRNA3) in length, the nucleotide sequence of which was determined using reverse transcription polymerase chain reaction, random-primed clones, and RNA-ligase-mediated rapid amplification of cDNA ends. dsRNA1 had a single open reading frame encoding a putative 61.54-kDa RNA-dependent RNA polymerase (RdRp). dsRNA2 and dsRNA3 were predicted to encode putative coat proteins (CPs) of 47.90 kDa and 46.25 kDa, respectively. The RdRp domain shared 63.54-73.17% amino acid sequence identity with members of the genus Gammapartitivirus. Phylogenetic trees based on RdRp or CP sequences showed that AttPV1 clustered with members of the genus Gammapartitivirus. Hence, these results indicate that AttPV1 is a new gammapartitivirus from A. tenuissima.
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