A new virus from the plant pathogenic oomycete Phytophthora infestans with an 8 kb dsRNA genome: The sixth member of a proposed new virus genus

作者：Cai Guohong; Krychiw Jason F; Myers Kevin; Fry William E; Hillman Bradley I^*

来源：Virology, 2013, 435(2): 341-349.

DOI：10.1016/j.viro1.2012.10.012

• Oomycete
• Phytophthora infestans
• Potato late blight
• RNA virus
• Fungal virus
• New virus genus

A virus designated Phytophthora infestans RNA virus 3 (PiRV-3) was characterized from an isolate of P. infestans that was co-infected with a second previously described virus, PiRV-4, a member of the virus family Narnaviridae (Cai et al., 2012). The genome of PiRV-3 is 8112 nt and one strand, designated the positive strand, has two deduced overlapping open reading frames linked by a potential frameshift sequence. The first open reading frame (ORF1) is predicted to encode a protein of unknown function, and ORF2 is predicted to encode an RNA-dependent RNA polymerase (RdRp) most closely related to six unclassified dsRNA viruses of filamentous fungi. The genome organizations of five of the related viruses are similar to P1RV-3, indicating taxonomic linkage among those viruses. We suggest that PiRV-3 and related viruses should be collected into a new virus taxon.

• 出版日期2013-1-20