American Phytopathological Society
April 2004
Interpretive summary

Isolation and Partial Nucleic Acid Characterization of a New Isolate of Potato virus V with Distinct Biological and Serological Properties
P. J. Shiel, Department of Plant, Soil and Entomological Sciences, University of Idaho, Moscow, ID 83844; L. Miller and S. A. Slack, Department of Plant Pathology, Cornell University, Ithaca, NY 14853; and P. H. Berger, Department of Plant, Soil and Entomological Sciences, University of Idaho, Moscow, ID 83844. Plant Dis. D-2004-0116-01R, 2004 (online). Accepted for publication 12 November 2003.

Breeding of potatoes for better quality and disease resistance is greatly facilitated by incorporation of exotic potato species and land races into the breeding programs. During screening for potato pathogens in an exotic potato line ‘Papa Amarillo’ (Yellow potato), we found plants that showed viruslike symptoms even though none of the known potato viruses were detected using serological assays. Several lines of analysis were used to determine that a new strain of Potato virus V (PVV) was present, and this new strain can escape detection with routine assays. This isolate has been characterized, and it is now possible to develop new antibody and nucleic acid probes to detect it in the future. Our work shows that viruses not previously described, often with distinct biological and serological characteristics, can still be found and can potentially escape detection.

Plant Disease is a leading international journal of applied plant pathology, published by The American Phytopathological Society. It publishes original research articles focusing on practical aspects of plant disease diagnosis and control. Each issue also includes a monthly feature article summarizing a significant topic in plant pathology. The Disease Notes section contains timely reports of new diseases, outbreaks, and other pertinent observations. For a full list of contents, visit http://www.apsnet.org/pd/current/.

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