Victorivirus, a new genus of fungal viruses in the family Totiviridae

被引:84
作者
Ghabrial, Said A. [1 ]
Nibert, Max L. [2 ]
机构
[1] Univ Kentucky, Dept Plant Pathol, Lexington, KY 40546 USA
[2] Harvard Univ, Sch Med, Dept Microbiol & Mol Genet, Boston, MA 02115 USA
关键词
DOUBLE-STRANDED-RNA; OXIDASE/RNA-BINDING PROTEIN; HELMINTHOSPORIUM-VICTORIAE; RIBOSOMAL FRAMESHIFT; 190S VIRUS; NUCLEOTIDE-SEQUENCE; CAPSID PROTEIN; GENOME; EXPRESSION; ORGANIZATION;
D O I
10.1007/s00705-008-0272-x
中图分类号
Q93 [微生物学];
学科分类号
071005 ; 100705 ;
摘要
The family Totiviridae comprises viruses with nonsegmented dsRNA genomes and isometric virions. A new genus, Victorivirus, has been approved for this family, named from the specific epithet of Helminthosporium victoriae, host of the type species, Helminthosporium victoriae virus 190S. Distinguishing characteristics of the 11 viruses so far assigned to this genus include infection of filamentous fungi, an apparently coupled termination-reinitiation mechanism for translating the RNA-dependent RNA polymerase as a separate product from the upstream capsid protein, and sequence-based phylogenetic grouping in a distinct clade from other family members.
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页码:373 / 379
页数:7
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