DE-AND RE-GENERATION OF CHLOROPLASTS IN THE CELLS OF CHLORELLA PROTOTHECOIDES I. SYNTHESES OF NUCLEIC ACIDS AND PROTEIN IN RELATION TO THE PROCESS OF REGENERATION OF CHLOROPLAST
スポンサーリンク
概要
- 論文の詳細を見る
When Chlorella protothecoides is grown mixotrophically in the light in a medium rich in glucose and poor in nitrogen source (uera), one obtains the cells that are entirely devoid of chlorophyll and containing only little RNA and protein. When these cells-referred to as "glucose-bleached" cells are further grown in the light with provision of nitrogen source, but without glucose, sequential syntheses of RNA, protein and chlorophyll take place. If the glucose-bleached cells are incubate in the dark under the same nutritional condition, RNA, protein and chlorophyll are also successively formed in relatively small amounts. The cells obtained under such a condition are, in many respects, similar to the cells that are obtained when the alga is grown in the dark in a medium poor in glucose and rich in the nitrogen source. These cells, which are called the "etiolated cells", are faintly green in color and contain larger amounts of RNA and protein compared with the chlorophyll-less glucose-bleached cells. The glucose-blanched cells and the etiolated cells show approximately the same content of DNA per cell. When the etiolated cells are incubated in the light with active synthesis of chlorophyll and additional syntheses of RNA and protein. Based on these results and those to be reported later, it was concluded that the greening of the glucose-bleached cells involves a light-independent phase followed by a light-requiring phase which entails the greening of cells and full organization of chloroplasts, and that the latter process is essentially the same as that taking place when the etiolated cells are incubated in the light with provision of nitrogen source in the absence of glucose.
- 日本植物生理学会の論文
著者
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Hase Eiji
Institute Applied Microbiology University Of Tokyo:tokugawa Institute For Biological Research
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Aoki Shigeji
Institute Cf Applied Microbiology University Of Tokyo And Tokugawa Institute For Biological Research
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Hase Eiji
Institute Cf Applied Microbiology University Of Tokyo And Tokugawa Institute For Biological Research
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