Effects of Blue Light on Cell Elongation and Microtubule Orientation in Dark-Grown Gametophytes of Ceratopteris richardii
スポンサーリンク
概要
- 論文の詳細を見る
Gametophytes of Ceratopteris richardii developed into strap-shaped prothalli in the dark. The prothalli had an apical meristem, a subapical elongation zone and a basal zone where no growth occurred. Continuous irradiation of blue light inhibited cell growth of the elongation zone, although red or far-red light had no effect on elongation. Cortical microtubules (MTs) of subapical cells reoriented from transverse to oblique or parallel to the growing axis during blue light inhibition. Each region of the strap-shaped prothallus was irradiated with a microbeam of blue light. Cell elongation in the subapical region was not inhibited by irradiation at the apical meristem. Irradiation of the subapical region inhibited cell elongation to a similar extent as the whole irradiation control. When a single elongating cell at one side of the subapical region was irradiated by a blue microbeam, elongation was inhibited in a cell at the irradiate side only, resulting in a bowing prothallus. Cortical MTs reoriented from transverse to longitudinal to the cell axis in irradiated cells only. The results indicate that each cell in the subapical region perceives blue light by itself, reorients only its cortical MTs and ceases only its cell elongation, independent of surrounding cells.
- 日本植物生理学会の論文
著者
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WADA Masamitsu
Department of Regulatory Biology, National Institute for Basic Biology
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Murata Takashi
Department Of Internal Medicine And Clinical Immunology Yokohama City University Graduate School Of
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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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Wada Masamitsu
Dept. Biol. Tokyo Metropolitan Univ.
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Kadota Akeo
Department of Biology, Faculty of Science, Tokyo Metropolitan University
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Kadota A
Department Of Biological Sciences Graduate School Of Science Tokyo Metropolitan University
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Wada M
Apple Research Station National Institute Of Fruit Tree Science National Agriculture And Food Resear
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Murata T
Department Of Life Sciences Graduate School Of Arts And Sciences The University Of Tokyo
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Kadota Akeo
Department Of Biological Sciences Graduate School Of Science And Engineering Tokyo Metropolitan Univ
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Murata Takashi
Department Of Internal Medicine And Cardiology Osaka City University Graduate School Of Medicine
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Murata Takashi
Department Of Biology Faculty Of Science Tokyo Metropolitan University
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Murata Takashi
Department Of Biology College Of Arts And Sciences The University Of Tokyo
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