微生物に対する放射線の影響 (第2報) : 螢光照度計による各種細菌の比較紫外線感受性に就いて

概要

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In the present paper, the writer reported the result of investigations of the effect of ultraviolet light on several microorganisms. The sensitivity of the microorganisms to ultraviolet light decreased in the following descending order : Staphylococcus aureus> Serratia marcescens> Escherichia coli> Xanthomonas pruni> Sarcina sp.> Botrytis cinerea. The pigment formation in cells of Serratia marcescens has some influence to the sensitivity, a pigmentless strain being more sensitive to ultraviolet light than a pigment-producing strain (carmine strain). Judging from the survival curves of the two strains, the cells of the pigment-producing strain appear to contain larger amount of ultraviolet-absorbing substances than the cells of the pigmentless strain. Comparisons of the irradiation dose were made on the basis of irradiation energy expressed by (light intensity irradiation time), but there was a tendency that a short irradiation with high intensity of light was more effective than a long irradiation with low intensity, even if the total irradiation energy calculated with the above formula was kept constant.
日本植物病理学会の論文
1959-07-31