植物におけるストレプトマイシンに関する研究 : 第5報アイソトープS^<35>を用いた硫酸ストレプトマイシンの吸収と植物体内における動静

概要

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The absorption and translocation of streptomycin in the tobacco plant was investigated by radioautographs of S^<35> labelled streptomycin sulphate absorbed by the plant. (1) It was found that there was little movement o streptomycin in the leaves when absorbed through the leaf surface. Some movement was observed towards the leaf tips when the streptomycin was applied to the mid-rib or large vein. (2) Movement into the xylem, followed by translocation to the upper leaves, was exhibited when the streptomycin was absorbed in cotton-wool and banded around bottom of the plant stem. When the streptomycin was absorbed in large amounts, translocation to the lower leaves was slow and the higher leaves contained a larger proportion of the streptomycin, though dependent on the total amount of streptomycin absorbed in the stem, the lower leaves often contained more than the middle leaves. (3) The results obtained from these radioautograph experiments were similar to those from the bio-assay of the leaf sap using the cup method and inoculation test with Pseudomonas tabaci. (4) Within twenty-four hours of applying streptomycin to the lower stem, it was translocated to the upper leaves.
日本植物病理学会の論文
1959-09-30