Intracellular Photoreceptive Site for Blue Light-Induced Cell Division in Protonemata of the Fern Adiantum-Further Analyses by Polarized Light Irradiation and Cell Centrifugation
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概要
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The intracellular localization of the photoreceptive site for blue light-induced cell division in single-celled protonemata of Adiantum capillus-veneris L. was investigated using polarized light irradiation and protonemal cell centrifugation. The response to irradiation with polarized blue light showed no dependence on the direction of light polarization. However, centrifugation of the protonemata followed by microbeam irradiation showed that the site of blue light perception could be displaced together with the nucleus. Centrifugal treatment changed the distribution of intracellular organelles at the time of light exposure and basipetally displaced the nucleus about 90 μm. This treatment had no effect on the induction of cell division with blue light if the protonemata were centrifuged again acropetally after the light treatment. Microbeam (30 × 30 μm^2) irradiation with blue light of the apical 45-75 μm region, the receptive site of blue light in non-centrifuged cell, did not induce cell division. However, cell division was induced by irradiation of the nucleus-containing region, indicating that the photoreceptive site was displaced together with the nucleus by the centrifugation. These results suggest that the blue light receptor regulating cell division in Adiantum protonemata is not likely to be located on the plasma membrane.
- 日本植物生理学会の論文
著者
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Wada Masamitsu
Department Of Biological Sciences Graduate School Of Science Tokyo Metropolitan University
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Wada Masamitsu
Department Of Biology Faculty Of Science Tokyo Metropolitan University
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Kadota Akeo
Department Of Biology Faculty Of Science Tokyo Metropolitan University
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Kadota Akeo
Department Of Biological Sciences Graduate School Of Science And Engineering Tokyo Metropolitan Univ
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Fushimi Yoko
Department of Biology, Faculty of Science, Tokyo Metropolitan University
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Fushimi Yoko
Department Of Biology Faculty Of Science Tokyo Metropolitan University
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