Cheravirus and Sadwavirus:: two unassigned genera of plant positive-sense single-stranded RNA viruses formerly considered atypical members of the genus Nepovirus (family Comoviridae)
Cheravirus and Sadwavirus:: two unassigned genera of plant positive-sense single-stranded RNA viruses formerly considered atypical members of the genus Nepovirus (family Comoviridae)
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DOI：
10.1007/s00705-007-1015-0
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发表时间：
2007-09-01
影响因子：
2.7
通讯作者：
Yoshikawa, N.
中科院分区：
文献类型：
--
作者：
Le Gall, O.;Sanfacon, H.;Yoshikawa, N.
Nepovirus属（科科莫病毒科）以良好的同质性和非典型成员的存在而闻名。特别是，该属的非典型成员在衣壳蛋白（CP）亚基的数量上存在差异。典型nepovirus有一个具有三个结构域的单个CP亚基，而非典型nepovirus有三个小CP亚基，可能对应于三个单独的结构域，或者有一个大亚基和一个小亚基，可能分别包含两个和一个结构域。这些差异被基于两种基因组rna序列的分层聚类所证实。因此，这些非典型病毒现在被分为两个不同的属，Cheravirus（三个CP亚基，型种Cherry rasp leaf virus）和Sadwavirus（两个CP亚基，型种Satsuma dwarf virus）。
The genus Nepovirus (family Comoviridae) was known both for a good level of homogeneity and for the presence of atypical members. In particular, the atypical members of the genus differed by the number of capsid protein (CP) subunits. While typical nepoviruses have a single CP subunit with three structural domains, atypical nepoviruses have either three small CP subunits, probably corresponding to the three individual domains, or a large and a small subunit, probably containing two and one structural domains, respectively. These differences are corroborated by hierarchical clustering based on sequences derived from both genomic RNAs. Therefore, these atypical viruses are now classified in two distinct genera, Cheravirus (three CP subunits; type species Cherry rasp leaf virus) and Sadwavirus (two CP subunits; type species Satsuma dwarf virus).