Studies on the Mechanism of Aphid Transmission of Mosaic Disease of Japanese Radish Using Radioactive Phosphorus 32

Nishizawa, Tadahiro; Nishi, Yasumichi; Kimura, Toshiei

doi:10.2222/jsv.9.130

Uirusu

1959

DOI: 10.2222/jsv.9.130

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Studies on the Mechanism of Aphid Transmission of Mosaic Disease of Japanese Radish Using Radioactive Phosphorus 32

Tadahiro Nishizawa¹,

Yasumichi Nishi²,

Toshiei Kimura³

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1963

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“…According to these studies, it was found that there were two distinct Brassica viruses, namely, turnip mosaic virus and cauliflower mosaic virus, and that Brassica crops were often doubly infected with these viruses24). Workers15,27,38,46,47) in Japan also tried to distinguish the viruses that attacked cruciferous crops: Daikon (Japanese radish, Raphanus sativus L. var. hortensis Backer), Chinese cabbage, turnip, Brassica napus, and other related vegetables.…”

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confidence: 99%

On the strain distribution of turnip mosaic virus

Yoshii

1963

Jpn. J. Phytopathol.

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On the strain distribution of turnip mosaic virus Pound and Walker (1945)45) attempted to distinguish insect borne viruses or virus strains attacking cruciferous plants. Since then, similar efforts were made by several other workers, mainly in America24,30,62). According to these studies, it was found that there were two distinct Brassica viruses, namely, turnip mosaic virus and cauliflower mosaic virus, and that Brassica crops were often doubly infected with these viruses24). Workers15,27,38,46,47) in Japan also tried to distinguish the viruses that attacked cruciferous crops: Daikon (Japanese radish, Raphanus sativus L. var. hortensis Backer), Chinese cabbage, turnip, Brassica napus, and other related vegetables. As a result of these studies, several aphid borne non-persistent viruses, which affected crucifers in Japan, namely, turnip mosaic virus, cauliflower mosaic virus, and cucumber mosaic virus, were recognized. Cucumber mosaic virus, however, caused but little damage to these crops, while cauliflower mosaic virus was found only from the vicinity ofTokyo. There were attempts to classify strains within turnip mosaic virus, but they were not very successful.The author collected some 120 isolates of turnip mosaic virus from various parts of Japan, and compared their host range and some of their properties65).It was confirmed that all of the Japanese isolates of the virus collected were able to infect plant showed very mild symptoms with systemic yellow spots or remained apparently healthy, and in the latter case the virus was often localized only within the inoculated leaves. All the Japanese isolates, moreover, produced either only mild symptoms with obscure ringspots on the leaves of young and fast growing cabbage plants, or not at all, often leaving the host plants as symptomless carriers.In any case, no "black ring spot" symptoms were produced.An attempt was made to divide turnip mosaic virus isolates into two strains. The strain that produced mild symptoms on B. oleracea capitata and N. glutinosa was named ordinary strain, and the other that produced severe necrotic ring symptom on B. oleracea capitata and rather severe mosaic on N. glutinosa was named cabbage strain.

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confidence: 99%

On the strain distribution of turnip mosaic virus

Yoshii

1963

Jpn. J. Phytopathol.

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Studies on the Mechanism of Aphid Transmission of Mosaic Disease of Japanese Radish Using Radioactive Phosphorus 32

Cited by 1 publication

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On the strain distribution of turnip mosaic virus

On the strain distribution of turnip mosaic virus

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