Molecular characterization of a novel mycovirus isolated from Rhizoctonia solani AG‑Bb strain 8-Q-36

  1. Runshuang Qiu
  2. Ningwei Chen
  3. Lihua Zhao
  4. Yan Zhang
  5. Chengyun Li
  6. Genhua Yang
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Abstract

The complete sequence and genome organization of a novel mycovirus from the strain 8-Q-36 of Rhizoctonia solani AG-Bb, were identified using Next-Generation Sequencing technology and it was tentatively named as Rhizoctonia fumigata mycovirus 2. The viral genome consists of two RNA components, 2252 and 1720 nt in length. RNA1 contains a open reading frame (ORF) encodeing a 80.3-kDa RdRp and RNA2 contains a ORF encoding a 54.3-kDa hypothetical protein. The encoded RdRp exhibited the highest sequence similarity to Rhizoctonia fumigata mycovirus (YP_009134757.1, 80.31%), with a sequence coverage of 100%. Phylogenetic analysis based on RdRp protein sequences revealed that Rfmv2 is a novel unclassified mycovirus.

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  1. Version published to 10.21203/rs.3.rs-6444719/v1 on Research Square