title: Complete nucleotide sequences and genome characterization of double-stranded RNA 1 and RNA 2 in the Raphanus sativus-root cv. Yidianhong [corrected].
abstract: Four distinct double-stranded (ds) RNA bands were extracted from leaves of Raphanus sativus-root cv. Yidianhong [corrected] with yellowing at the leaf edge in China. Purified viral particles of 28-30 nm in diameter contained dsRNA segments with the same number and mobility as these extracted directly from radish leaves. The two major dsRNA segments, namely RasR 1 and RasR 2, were 1866 and 1791 bp in length, respectively. Computer analysis predicted that they both contained a single open reading frame (ORF) on their plus-stranded RNA, putatively encoding a RNA dependent RNA polymerase and a capsid protein similar to that encoded by members of the family Partitiviridae. In addition, both RasR 1 and RasR 2 were highly conserved at the 5' untranslated regions (UTR) and had an adenosine-uracil rich stretch at the 3' UTR, with an identical terminal motif (5'-AAAAUAAAACC-3'). Taken together, these results suggest that the two major dsRNA segments constitute the genome of a partitivirus infecting radish.
authors.affiliation: College of Life Sciences, Zhejiang University, Hangzhou, PR China.
authors.forename: L
authors.initials: L
authors.lastname: Chen
authors.forename: J S
authors.initials: JS
authors.lastname: Chen
authors.forename: L
authors.initials: L
authors.lastname: Liu
authors.forename: X
authors.initials: X
authors.lastname: Yu
authors.forename: S
authors.initials: S
authors.lastname: Yu
authors.forename: T Z
authors.initials: TZ
authors.lastname: Fu
authors.forename: W H
authors.initials: WH
authors.lastname: Liu
mesh_terms: D020413:3' Untranslated Regions / Q000235:genetics; D020121:5' Untranslated Regions / Q000235:genetics; D020816:Amino Acid Motifs; D001483:Base Sequence; D036022:Capsid Proteins / Q000235:genetics; D002681:China; D017124:Conserved Sequence; D018076:DNA, Complementary; D016679:Genome, Viral; D008969:Molecular Sequence Data; D016366:Open Reading Frames; D010802:Phylogeny; D010935:Plant Diseases / Q000821:virology; D018515:Plant Leaves / Q000821:virology; D010942:Plant Viruses / Q000235:genetics*; D012328:RNA Viruses / Q000235:genetics*; D012330:RNA, Double-Stranded / Q000737:chemistry / Q000235:genetics* / Q000302:isolation & purification; D012367:RNA, Viral / Q000737:chemistry / Q000235:genetics / Q000302:isolation & purification; D012324:RNA-Dependent RNA Polymerase / Q000235:genetics; D031224:Raphanus / Q000821:virology*; D016415:Sequence Alignment; D017423:Sequence Analysis, RNA; D017385:Sequence Homology
chemical_list: D020413:3' Untranslated Regions; D020121:5' Untranslated Regions; D036022:Capsid Proteins; D018076:DNA, Complementary; D012330:RNA, Double-Stranded; D012367:RNA, Viral; D012324:RNA-Dependent RNA Polymerase