Journal
GENE
Volume 638, Issue -, Pages 7-12Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.gene.2017.09.069
Keywords
Alfalfa; Medicago sativa alphapartitivirus 1; Medicago sativa deltapartitivirus 1; Medicago sativa marafivirus 1; Partitiviridae; Tymoviridae
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Funding
- National Research Foundation of Korea - Korea Government [2017R1A1B4005866]
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Genomic RNA molecules of plant RNA viruses are often co-isolated with the host RNAs, and their sequences can be detected in plant transcriptome datasets. Here, an alfalfa (Medicago sativa) transcriptome dataset was analyzed and three new RNA viruses were identified, which were named Medicago sativa alphapartitivirus 1 (MsAPV1), Medicago sativa deltapartitivirus 1 (MsDPV1), and Medicago sativa marafivirus 1 (MsMV1). The RNA-dependent RNA polymerases of MsAPV1, MsDPV1, and MsMV1 showed about 68%, 58%, and 46% amino acid sequence identity, respectively, with their closest virus species. Sequence similarity and phylogenetic analyses indicated that MsAPV1, MsDPV1, and MsMV1 were novel RNA virus species that belong to the genus Alphapartitivirus of the family Partitiviridae, the genus Deltapartitivirus of the family Partitiviridae, and the genus Marafivirus of the family Tymoviridae, respectively. The bioinformatics procedure applied in this study may facilitate the identification of novel RNA viruses from plant transcriptome data.
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