Studies on red pigments excreted by cells of Chlorella protothecoides during the process of bleaching induced by glucose or acetate II. Mode of formation of the red pigments

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概要

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• In parallel with the studies reported in the preceding paper (1), the modes of production of characteristic red pigments by Chlorella protothecoides cells were investigated under various culture conditions. (i) During the course of "acctate-bleaching" of algal cells, excretion of red pigments in the medium proceeded with simultaneous disappearance of chlorophyll from algal cells. The total amount (weight) of the red pigments excreted into medium was slightly less than that of the chlorophyll lost. No red pigment was detectable within the bleaching algal cells. Carotenoids were found to increase or remain nearly constant in their quantities per culture during the process (if bleaching. (ii) In a later phase of "glucose-bleaching" some red pigments were found to be present inside as well as outside the algal cells, and the excreted pigments underwent further changes turning colourless. (iii) Both the production of red pigments and disappearance of chlorophyll were suppressed by light and this light effect was insensitive to CMU. (iv) During the process of "regreening" of "glucose-bleached" algal cells, no production of red pigments was observed either in or outside the algal cells. Based on these results we concluded that the red pigments are produced from chlorophyll during the bleaching process of algal cells induced by an organic carbon source.

• 日本植物生理学会の論文

著者

• Hase Eiji

  Tokugawa Institute For Biological Research

• Oshio Yutaka

  Institute Of Applied Microbiology University Of Tokyo

関連論文

• Studies on nucleic acids in chloroplasts isolated from Chlorella protothecoides
• Studies on ribonucleic acids from Chlorella protothecoides with special reference to the degradation of chloroplast RNA during the process of "glucose-bleaching"
• Acetate metabolism in the process of "acetate-bleaching" of Chlorella protothecoides
• Further studies on the metabolism of glucose in the process of "glucose-bleaching" of Chlorella protothecoides
• Changes of ribulose 1,5-diphosphate carboxylase level during the processes of degeneration and regeneration of chloroplasts in Chlorella protothecoides
• Studies on red pigments excreted by cells of Chlorella protothecoides during the process of bleaching induced by glucose or acetate II. Mode of formation of the red pigments
• A note on ribosomes in cells of Chlorella protothecoides
• Effect of cycloheximide on the process of "glucose-bleaching" in Chlorella protothecoides
• Studies on red pigments excreted by cells of Chlorella protothecoides during the process of bleaching induced by glucose or acetate I. Chemical properties of the red pigments

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