Pellicularia filamentosa (Pat.) Rogers に関する研究 : 第1報病原性と 2,3 の培養上の性質との関係

概要

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In the present paper the writers described the result of experiments on the pathogenicity of Pellicularia filamentosa to cucumber seedings, and on some characters on culture media of thirty eight isolates obtained from many different host plants. The pathogenicity of this fungus to cucumber seedings is generally intensive in the isolates obtained from seedings. Generally, the isolates with no pathogenicity showed a poor mycelial, growth, while pathogenic ones showed rapid growth of mycelium as much as 8〜11mm per 5hrs. The isolates of sasaki-type were found in the isolates with more rapid growth of mycelium. As carbon sources of this fungus, hexose was more available than pentose. It seems, however, that the isolates of sasaki-type having a weak pathogenicity represent a poor utilization of maltose. The isolates which were able to utilize rhamnose seemed to have a pathogenicity. However, the isolates which were not able to utilize much of phenylalanine did not utilize also much of both. histidine and tryptophan, nor one of them in excess. Moreover, the isolates showing a poor utilization of urea and cysteine seemed to belong to the sasaki-type. Although both solani-and sasaki-type have many different characters, they are not divided so distinctly into two groups, solani-and sasaki-types, and intermediate types are found.
日本植物病理学会の論文
1960-09-25