水稲ごま葉枯病病斑周縁組織のでん粉蓄積機構 : 4. 病原菌培養ろ液のでん粉分解作用の抑制

概要

論文の詳細を見る
The culture filtrate of Cochliobolus miyabeanus (Ito et Krib.) Drechs., the cauasl fungus of Helminthosporium leaf spot of rice plant, exhibited a strong ability for starch decomposition throughout the whole culture duration. Furthermore, the culture filtrate contained much residual sugar in the early stage of culture, namely, for the first 24 days after inoculation in this experiment. Because of those two characteristics of the filtrate, its inhibitory effect on β-amylase preparation was hardly detected. However, when the cultural filtrate was deproteinized by means of saltingout with ammonium sulfate, it revealed a striking inhibitory effect on the activity of β-amylase preparation, for starch decomposing ability was removed from the filtrate. From those results, it was concluded that certain kinds of inhibiting substances for starch decomposition were produced in the culture filtrate of this fungus.
日本植物病理学会の論文
1965-05-31