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Potato mop-top virus
Potato mop-top virus (PMTV) is a plant pathogenic virus transmitted through the vector ''Spongospora subterranea'' that affects potatoes. PMTV is a member of the genus Pomovirus. The virus, first found in Germany has now spread throughout Europe, Asia, South America, and North America. Many disease management systems have been found to be ineffective against the virus, although a combination of sanitation and vector controls seems to work well.
== Hosts and Symptoms ==
As the name implies, the main host is potato; however, this virus also affects some common vegetable plants and weeds. Some of them include tomato, black nightshade, lambsquarters and ground cherry.〔 The potato mop top virus' primary hosts are plants in the Solanaceae and Chenopodiaceae. Potatoes that are infected by PMTV generally show hollow necrotic spots on the inside. This virus shows different symptoms in Europe; for example, the infected plants usually show dark brown necrotic arcs that discolor the tuber’s flesh (these symptoms are very similar to those caused by alfalfa mosaic virus). Interestingly, plants showing no symptoms of PMTV tend to produce larger quantities of infected tubers if they are derived from plants that have shown foliar symptoms in the previous year.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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