イネ grassy stunt ウイルスに関する研究 (第1報)

概要

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It was shown that japonica rice cultivars, Norin No. 8, Mihonishiki, Yukimochi and Kinmaze, were susceptible to rice grassy stunt disease, and that colonies of brown planthopper, Nilaparvata lugens Stal collected in the fields of Japan were capable of transmitting the disease. The infected japonica rice plants developed typical symptoms of the grassy stunt disease, such as severe stunting, excess tillering, yellowish green and narrowing leaves, scattering rusty spots on the leaves, and erect growth. The host range of the causal agent was limitted only to rice, and the most Graminea, such as maize, wheat, barley, oat, Panicum crus-galli var. frumentaceum Hook, P. milliaceum L. and Coix lachryma-jobi var. frumentaceum Makino, were not susceptible to the disease. No evidence of soil-and sap-transmission was obtained in this experiment. The results of insect transmission suggested that the causal agent of the grassy stunt disease was persistently transmitted by the insect vectors. None of the diseased plants which were treated with sulfanilamide-drugs and antibiotics (tetracycline, chloramphenicol and penicillin) through the roots recovered the symptoms, suggesting that the grassy stunt disease was not mycoplasma-like organism, rickettsia or chlamydia origin. About 10% of the insects artificially injected with the extracts from the infected rice, transmitted the disease.
日本植物病理学会の論文
1980-09-25