Complete Genome Sequencing and Analysis of Rehmannia Mosaic Virus Isolate from Shanxi Province

Using double-stranded RNA（dsRNA） technology and sequence-independent amplification（SIA）, the molecular identification on infected Rehmannia glutinosa in the field with mosaic symptoms was performed and the whole-genome of the Rehmannia mosaic virus（ReMV） Shanxi isolate（ReMV-SX） was sequenced. Sequencing analysis showed that the virus that infected Rehmannia glutinosa was Rehmannia mosaic virus（ReMV）. The full-length of the obtained ReMV-SX sequence（GenBank accession no. JX575184） was 6 395 nt, containing four open reading frames（ORFs）. The sequence homology analysis of the complete nucleotide sequence showed that ReMV-SX was 93.8%-97.0% homologous to ReMV in Tobamovirus subgroup I, while only 49.8%-58.9% homologous to the isolates in subgroups II and III of the same genus. Phylogenetic analysis showed that ReMV-SX and ReMV-Henan formed a separate branch and had the closest genetic relationship. The results laid the foundation for ongoing researches in the taxonomic status and evolution of ReMV and for further investigating the pathogenic mechanism of ReMV infecting Rehmannia glutinosa.