レンゲ萎縮病ウイルスによるエンドウおよびソラマメの萎黄病

概要

論文の詳細を見る
The occurrence of ye11ow dwarf disease of pea and broadbean was noticed in Wakayama, Aichi, and Okayama Prefectures since 1963. In general, the outbreak was sporadic, but was observed to be epidemic in occasional fields. The virus causes ye11owing, 1eaf-cur1ing or rol1ing, and dwarfing in various leguminous plants, such as pea, broadbean, bean, azuki-bean, soybean, milk-vetch, crimson clover, and subterranean clover, and also in Datura stramonium. In tobacco(Samsun and White Burley), N. glutinosa, N. rustica, and spinach leaf-cur11ng and stunting are observed as we11, although the virus is not yet recovercd. The causal virus is not transmitted by plant juice. It is transmitted by Aphis craccivora, but not by Myzus persicae, Acrythosiphon pisum, and Megoura viciae japonica. In the dip-preparation from diseased plants, no e1ongated virus particles are detected under the electron microscope. No inclusion body is demonstrated in epidermal ce11s of infected pea and broadbean. Aphis craccivora could acquire the virus in as short time as 5 minutes. Efficiency of transmission, however, increased with more time than 4 hours on the source plants. The aphids which had received sufficient acquiring feed, transmitted the virus to about 7 percent of plants if fed for inoculation for 5 minutes on test plants, but infection increased to above 30 percent when aphids fed for 4 hr. or more. Latent period invector aphid was found to be at least 36 hours at alternating temperatures of 24℃(day) and 18 ℃(night). As a result of daily serial transfers, individual aphids seemed to transmit the virus as 1ong as they 1ived, although not every plant in a series was infected.In one case, a single aphid was able to infect a11 the test plants during a period of successive 15 days. Thus, the virus can be considered a persistent virus. By reference to the 1iterature, the virus in the present work is apparently distinct in symptoms and agents of transmission from such persistent aphid-borne viruses as pea enation mosaic virus, pea leaf rol1 virus, groundnut rosette virus and subterranean clover stunt virus, but identical with milk-vetch dwarf virus(MDV) which was described in Japan by Matsuura in 1953 and by Hino et al. in 1967.
1968-01-31

レンゲ萎縮病ウイルスによるエンドウおよびソラマメの萎黄病

スポンサーリンク

概要

著者

関連論文

スポンサーリンク