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Xanthophyll-cycle of ice algae on the sea ice bottom in Saroma Ko lagoon, Hokkaido, Japan
https://doi.org/10.15094/00006202
https://doi.org/10.15094/00006202cef95966-ed02-49dc-83e5-3295f9baa3e9
名前 / ファイル | ライセンス | アクション |
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KJ00000045362 (719.3 kB)
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Item type | 紀要論文(ELS) / Departmental Bulletin Paper(1) | |||||
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公開日 | 2003-02-01 | |||||
タイトル | ||||||
タイトル | Xanthophyll-cycle of ice algae on the sea ice bottom in Saroma Ko lagoon, Hokkaido, Japan | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | diel change | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | ice algae | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | light acclimation | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | light stress | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | xanthophyll cycle | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | departmental bulletin paper | |||||
ID登録 | ||||||
ID登録 | 10.15094/00006202 | |||||
ID登録タイプ | JaLC | |||||
ページ属性 | ||||||
内容記述タイプ | Other | |||||
内容記述 | P(論文) | |||||
著者名(英) |
Kudoh, Sakae
× Kudoh, Sakae× Imura, Satoshi× Kashino, Yasuhiro |
|||||
著者所属(英) | ||||||
en | ||||||
National Institute of Polar Research/National Institute of Polar Research/Graduate School and Faculty of Science, Himeji Institute of Technology | ||||||
抄録(英) | ||||||
内容記述タイプ | Other | |||||
内容記述 | Using the ice algal community prevailing on the sea ice bottom in Saroma Ko lagoon, Hokkaido, Japan, the response of a photosynthetic system to exposure to light was investigated, focusing on xanthophylls-cycle features, diel changes of the pool size of xanthophylls-cycle pigments and the effective quantum yield of PS II in early February, 1998. By pigment analysis, β-carotene, chlorophylls a and c, diadinoxanthin, diatoxanthin and fucoxanthin were detected as major pigments, which suggests that diatoms dominated as ice algae during this study. When such ice algae were exposed to irradiance nearly 4 times higher than the daily maximum level at the ice bottom, the interconversion between diadinoxanthin and diatoxanthin continued for ca. 20 min immediately after the onset of irradiation in spite of the sub-zero Celsius ambient temperature. Although the pool size of this xanthophylls-cycle (relative amount of diadinoxanthin plus diatoxanthin per chlorophyll a) was not so large compared to that of mesophilic diatoms, it showed a circadian change increasing during the daytime and decreasing at night. This change correlated well with the effective quantum yield of PS II. These results suggest that ice algae at the sea ice bottom possess a relatively effective xanthophylls-cycle to regulate light energy usage. However, the xanthophylls-cycle in ice algae may be poor compared to that of algae living in intermediate irradiance, which can be interpreted from the point of view of bioenergetic aspects of shade adapted ice algae. | |||||
雑誌書誌ID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA11327019 | |||||
書誌情報 |
Polar bioscience 巻 16, p. 86-97, 発行日 2003-02 |
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出版者 | ||||||
出版者 | National Institute of Polar Research |