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Combining Analysis of DNA in a Crude Virion Extraction with the Analysis of RNA from Infected Leaves to Discover New Virus Genomes
Published on: July 27, 2018
Complete genome sequence of a novel chrysovirus infecting Aspergillus terreus
Zunqiu Wu1,2,3, Xun Tian1,2, Xiang Liu1,2
1Key Laboratory of Endemic and Ethnic Diseases, Guizhou Medical University, Ministry of Education, 550004, Guiyang, China.
Abstract:
A double-stranded RNA (dsRNA) mycovirus was obtained from Aspergillus terreus strain HJ3-26 and designated "Aspergillus terreus chrysovirus 1" (AtCV1). It consists of four dsRNA segments (dsRNA1-4) with lengths of 3612 bp, 3132 bp, 3153 bp, and 3144 bp, respectively. Sequence analysis showed that dsRNA1 encodes an RNA-dependent RNA polymerase (RdRp), dsRNA2 encodes a capsid protein, and both dsRNA3 and dsRNA4 encode hypothetical proteins. Phylogenetic analysis of the RdRp suggested that AtCV1 is a member of a new species of the genus Alphachrysovirus in the family Chrysoviridae. This is the first chrysovirus obtained from A. terreus.
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