Characterization of a New Potyvirus from Potato

Molecular resolution of a complex of potyviruses infecting solanaceous crops at the centre of origin in Peru

“…Similarly, it is not known whether Pepper severe mosaic virus (PepSMV) or PepYMV are conspecific with PTV. The serological relationships between PTV, PVV, WPMV, PVY and PepMoV have been reported in many studies (Fribourg, 1979;Jones & Fribourg, 1979;Fernandez-Northcote & Fulton, 1980;Fribourg & Nakashima, 1984;Adam et al, 1995), further emphasizing the need to resolve the taxonomic positions of the viruses in this 'potyvirus complex' infecting solanaceous species. PTV has not been isolated outside Peru, whereas PVV occurs in a few potato cultivars in Western Europe (Jones, 1987;Oruetxebarria & Valkonen, 2001) and shows only limited sequence variability (Oruetxebarria et al, 2000;Oruetxebarria & Valkonen, 2001).…”

“…For example, Pepper mottle virus (PepMoV) (Purcifull et al, 1975), Pepper yellow mosaic virus (PepYMV) (Inoue-Nagata et al, 2002) and Potato virus V (PVV) (De Bokx et al, 1975;Fribourg & Nakashima, 1984;Jones & Fribourg, 1986) were originally described as PVY. Sequence comparison was the only method by which these viruses could be correctly classified as unique species (Robaglia et al, 1989;Vance et al, 1992;Oruetxebarria et al, 2000;Inoue-Nagata et al, 2002).…”

“…Thus, the fact that the taxonomic status of non-sequenced viruses remains confused and/or disputed complicates the classification of potyviruses of known sequence. For example, it was proposed (Alvarez & Fernandez-Northcote, 1996;Stevenson et al, 2001) that PVV, a virus characterized from potato in Peru in the 1980s (Fribourg & Nakashima, 1984), may be a strain of Peru tomato virus (PTV) that was described in the 1970s in tomato and pepper crops grown in the desert valleys of coastal Peru (Raymer et al, 1972;Fribourg, 1979;Fernandez-Northcote & Fulton, 1980). Furthermore, Wild potato mosaic virus (WPMV) was isolated in 1974 from wild potatoes (Solanum chancayense Ochoa) growing in the lomas vegetation of the Peruvian coastal desert at Lachay (Jones & Fribourg, 1979).…”

Genome sequence of a divergent Colombian isolate of potato virus V (PVV) infecting Solanum phureja

“…Further serological and phylogenetic studies, however, confi rmed it to be a distinct potyvirus species clearly distinguishable from PVY (Fribourg and Nakashima, 1984;Oruetxebarria et al, 2000;Inoue-Nagata et al, 2002;Spetz et al, 2003). Symptoms induced by PVV are mild and are characterized by leaf pallor, some decrease in leafl et size and slight leafl et distortion; in some cases, PVV can also induce the development of mosaics and necrotic spots in lower leaves (Calvert et al, 1980;Fribourg and Nakashima, 1984;Jones and Fuller, 1984;Jones, 1987).…”

“…Symptoms induced by PVV are mild and are characterized by leaf pallor, some decrease in leafl et size and slight leafl et distortion; in some cases, PVV can also induce the development of mosaics and necrotic spots in lower leaves (Calvert et al, 1980;Fribourg and Nakashima, 1984;Jones and Fuller, 1984;Jones, 1987). PVV can be transmitted by infected seed tubers and non-persistently by aphids such as Myzus persicae, Brachycaudus helichrysi, Macrosiphum euphorbiae and Rhopalosiphoninus latysiphon (Calvert et al, 1980;Bell, 1983;Fribourg and Nakashima, 1984). Potato virus V has been reported to infect potato cultivars in the Andean region of South America (Spetz et al, 2003), Northwestern Europe (Oruetxebarria et al, 2000) and, more recently, Iran (Shamsadden-Saeed et al, 2014).…”