北海道のメロン(Cucumis melo L.)より分離された5種類のウイルス

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In 1970-1975, five viruses, cucumber mosaic virus (CMV), watermelon mosaic virus (WMV), cucumber green mottle mosaic virus (CGMMV), muskmelon necrotic spot virus (MNSV) and tomato ringspot virus (TomRSV), were isolated from field-grown melon plants in Hokkaido. Identification of the viruses was based on host range, physical properties, vector relationships, particle morphology and serology. The isolate of CMV was found to be serologically related to Y strain of CMV, and to be the most prevalent virus infecting melons in Hokkaido. WMV, which has flexuous filaments about 750 nm long, was transmitted by aphids in a non-persistent manner, and its host range was restricted mostly to Cucurbitaceae, Leguminosae and Chenopodiaceae. According to the classification of Webb and Scott, this virus belongs to the WMV-2 group. CGMMV which has straight rods 300 nm long was not transmitted by aphids, and its host range was restricted to Cucurbitaceae and Chenopodium amaranticolor. The virus reacted with antiserum to water melon strain, but not with antiserum to cucumber strain of CGMMV. MNSV with isometric particles 25 to 30 nm in diameter, had a host range restricted to Cucurbitaceae. The virus was soil-borne, but not transmitted through seeds of melon. Olpidium sp. was found constantly to present in roots of plants naturally infected with MNSV. In the greenhouse, almost all of the melon plants grown on the soil infested with MNSV were symptomless. However, when leaves of these symptomless plants were rubbed with gauze, necrotic local lesion appeared on the rubbed surface. Mass of virus particles and/or multivesicular structure were observed in cells of parenchyma tissue adjacent to vessel, when thin sections of the necrotic local lesion induced by mechanical abrasion of the leaves were observed under an electron microscope. TomRSV, isolated for the first time from melons, showed isometric particles about 25 nm in diameter and has a wide host range. This virus was transmitted through seeds of soybean, but not through seeds of melon. The virus reacted with antiserum to TomRSV.
日本植物病理学会の論文
1980-07-25

北海道のメロン(Cucumis melo L.)より分離された5種類のウイルス

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