カンキツリクビン(グリーニング病)の病徴発現に及ぼすペニシリンおよび2, 3抗生物質処理の影響

概要

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Buds of ponkan (Citrus reticulata Blanco) infected by likubin (citrus greening disease) were treated with penicillin, tetracycline, tylosine, streptomycin and cefaloridine by immersing in solutions for 24 hr, and the treated buds were grafted on indicator ponkan seedlings for determining remained infectivity. Likubin symptom development in indicator plants was completely suppressed when the infected buds were treated with very low concentration of tetracycline (12.5μg/ml). Penicillin and tylosine were also effective in suppressing likubin symptom development at concentrations higher than 200 μg/ml, whereas streptomycin and cefaloridine were in effective at considerably higher concentrations (500μg/ml). Tetracycline was phytotoxic at higher concentrations (more than 250μg/ml) as indicated by no survival of the treated buds after grafting. Penicillin was not phytotoxic even when the buds were immersed in 2000μg/ml solution for 72 hr. The results support the hypothesis that the pathogen associated with likubin will be classified as a bacterium or a rickettsialike organism rather than as a mycoplasma.
日本植物病理学会の論文
1979-07-25