4.4 Article

Identification and molecular characterization of Panax notoginseng virus A, which may represent an undescribed novel species of the genus Totivirus, family Totiviridae

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ARCHIVES OF VIROLOGY
卷 161, 期 3, 页码 731-734

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SPRINGER WIEN
DOI: 10.1007/s00705-015-2716-4

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  1. National Natural Science Foundation of China [31160360]
  2. Program for Innovative Research Team (in Science and Technology) in University of Yunnan Province
  3. Opening Fund of Engineering Research Center of Ecology and Agricultural Use of Wetland, Ministry of Education [KF201501]

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A double-stranded RNA (dsRNA), PN-S, isolated from Panax notoginseng was sequenced and characterized. dsRNA PN-S was determined to be 5003 base pairs (bp) in length and to have a genome organization similar to that of totiviruses. The two deduced proteins encoded by dsRNA PN-S have the highest amino acid (aa) sequence identity to CP and RNA-dependent RNA polymerase (RdRp) of black raspberry virus F (BrVF), a tentative member of the genus Totivirus, family Totiviridae, at 39 % and 54 %, respectively. In a phylogenetic tree based on an alignment of the RdRp amino acid sequences of dsRNA PN-S and selected totiviruses, dsRNA PN-S formed a monophyletic clade with dsRNA viruses belonging to the genus Totivirus. These data suggest that dsRNA PN-S may represent the genome of a member of a novel species of the genus Totivirus, family Totiviridae, for which we propose the name Panax notoginseng virus A (PnVA).

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