Interactions between the Nucleus and Cytoplasmic Organelles during the Cell Cycle of Euglena gracilis in Synchronized Cultures II. Association between the Nucleus and Chloroplasts at an Early Stage in the Cell Cycle under Photoorganotrophic Conditions (Pa
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概要
- 論文の詳細を見る
Three-dimensional models of chloroplasts before and during their association with the nucleus in Euglena gracilis Z were constructed based on serial sections of cells taken during an early phase of the cell cycle in synchronized cultures under photoorganotrophic condition. Before association, the cell contained two to three chloroplasts which were composed of elongated tubular bodies extending in different directions toward the cell periphery. These tubular arms of chloroplasts were drawn toward the nucleus, and folded, with concurrent coalescence, into a single giant body surrounding the nucleus. A DAPI-fluorescence photomicrograph of a giant chloroplast revealed that the chloroplast-nucleoids were in the form of a continuous strand lying throughout the chloroplast body, and that some protuberances from the nucleoid strand were in especially close proximity to the nuclear periphery. A new mode of the chloroplast-nucleus connection was observed. The nucleus had conspicuous protrusions, whose distal ends were connected with the chloroplast. The outer membrane of the nuclear envelope was continuous with the outer chloroplast membrane, and at some sites, an open space was formed between the inner nuclear membrane and the inner chloroplast membrane.
- 日本植物生理学会の論文
著者
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Hase E
Tokyo Inst. Of Technol. Tokyo Jpn
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Hase Eiji
Laboratory Of Chemistry Faculty Of Medicine Teikyo University
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OSAFUNE Tetsuaki
Department of Life Science, Nippon Sport Science University
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EHARA Tomoko
Department of Microbiology, Tokyo Medical University
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Ehara T
Department Of Microbiology Tokyo Medical College
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Ehara Tomoko
Department Of Life Science Nippon Sport Science University
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Osafune Tetsuaki
Department Of Life Science Nippon Sport Science University
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