Mechanism of Photoregulated Carotenogenesis in Rhodotorula minuta IV. : Effect of Light on the Production of Ergosterol and Phytoene and on the Composition of Carotenoid Pigments

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概要

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• The effect of light on the production of ergosterol and phytoene and on the composition of carotenoids in Rhodotorula minuta was studied to determine which part of the path-way of carotenoid synthesis regulated by light. The ergosterol content in the cells was in the range of 3.4-3.6 mg/g dry cells regard-less of the presence or absence of illumination and the light intensity. The phytoene production in the cells was markedly stimulated by light and was dependent on the light intensity according to the amount of carotenoid pigments produced. In addition, the ratio of phytoene to carotenoid was in the range of 0.36-0.44, regardless of the presence or absence of illumination and the light intensity. The fact that the ratio of carotenoid fractionated on the basis of the functional group involved in each carotenoid to the total amount of carotenoid was almost constant regardless of the light intensity suggested that the composition of the carotenoids synthesized in the cells is not affected by light. It was deduced from these results that light induced the production of enzyme(s) required for phytoene biosynthesis in Rhodotorula minuta.

• 日本植物生理学会の論文

著者

• Iwai Kazuo

  Department Of Food Science And Technology Faculty Of Agriculture Kyoto University

• HASEGAWA Kiyozo

  Department of Food Science and Nutrition, Faculty of Home Economics, Nara Women's University

• Tada Mikiro

  Department Of Agricultural Chemistry Faculty Of Agriculture Okayama University

• Suzuki Tetsuya

  Research Institute for Food Science, Kyoto University

• Shiroishi Masahide

  Department of Agricultural Chemistry, Faculty of Agriculture, Okayama University

• Shiroishi Masahide

  Department Of Agricultural Chemistry Faculty Of Agriculture Okayama University

• Suzuki Tetsuya

  Research Institute For Food Science Kyoto University

• Hasegawa Kiyozo

  Department Of Food Science And Nutrition Faculty Of Home Economics Nara Women's University

• Hasegawa Kiyozo

  Department Of Food Science And Nutrition Nara Women's University

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