麹菌の自然変異に関する研究(2)-麹菌の変異の細胞学的研究-

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概要

• 論文の詳細を見る

• 1. The constant strains of the Koji molds, S- or F-types, form conidia with comparatively uniform sizes; i, e. S=3_??_5μ and F=4_??_6μ. The inconstant strains, on the contrary, produce conidia rich in variety of sizes, including those with unordinarily large diameters (3_??_10μ or more). 2. The conidia of the constant strains have been found to contain 1_??_4 nuclei, the majority containing two nuclei. The conidia of the inconstant strains, however, are exceedingly multinucleate (8_??_20 or more) and large in diameters as shown in the Plate. 3. In the constant strains, one nucleus moves into conidium from apex of the sterigmata at the beginning of the conidium formation, and divides at once into 2_??_4 through probable mitotic divisions. While in the inconstant or variable strains, more than 2 conidia migrate from sterigmata into newly formed conidium. Those conidia become multinucleate (8_??_20 or more) promptly through repeated divisions of nuclei. 4. As to the migration of ndclei from vesicle, which is conspicuously multinucleate, into sterigmata, the authors have recognized that in the constant strains always only one nucleus migrates into sterigmata while in the inconstant strains at least 2_??_4 simultaneously, the sterigmata becoming much more long and broad consequently. 5. From the facts above shown it might be assumed that the variability of the inconstant strains of the Koji molds chiefly depends upon the multinucleate property of the conidia.

• 社団法人 日本農芸化学会の論文

著者

• 石谷 千代子

  東京大学農学部農芸化学教室

• 坂口 謹一郎

  東京大学農学部農芸化学教室

• 石谷 千代子

  東京大学農学部農明芸化学教室

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• 麹菌の自然変異に関する研究(2)-麹菌の変異の細胞学的研究-
• 麹菌の自然変異に関する研究(1)-菌の形態と変異との関係並びに変異株の形態に就て-
• 麹菌の自然変異に関する研究-5-

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