| Item type |
学術雑誌論文 / Journal Article(1) |
| 公開日 |
2013-08-22 |
| タイトル |
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タイトル |
Control by ammonium ion of the change from step-up to step-down photophobically responding cells in the flagellate alga Euglena gracilis |
| タイトル |
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タイトル |
Control by ammonium ion of the change from step-up to step-down photophobically responding cells in the flagellate alga Euglena gracilis |
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言語 |
en |
| 言語 |
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言語 |
eng |
| 資源タイプ |
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資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
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資源タイプ |
journal article |
| アクセス権 |
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アクセス権 |
metadata only access |
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アクセス権URI |
http://purl.org/coar/access_right/c_14cb |
| 著者 |
MATSUNAGA, Shigeru
TAKAHASHI, Tetsuo
WATANABE, Masakatsu
SUGAI, Michizo
HORI, Terumitsu
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| 著者別名 |
渡辺, 正勝
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| 抄録 |
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内容記述タイプ |
Abstract |
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内容記述 |
The regulation between step-down and step-up photophobic responses, resulting in photoaccumulation of the cells in an actinic light trap or cells' avoidance from an excessive illumination, is crucially important for the survival of phototrophic organisms such as Euglena gracilis. As for the factors involved in this regulation in Euglena gracilis, we for the first time report here that ammonium ion specifically enhances step-down photophobic response, together with the effects of L-methionine-DL-sulfoximine (L-MSO), an inhibitor of ammonium assimilation, to specifically enhance step-up photophobic response. The apparent positive correlation between the degree of greening and the step-down photophobic response did not seem to reflect real causal relationship in view of the results with effects of gabaculine, an inhibitor of δ-aminolaevulinic acid (δ-ALA) formation. The transmission of stigma and step-down appearance did not show any correlation either, in contrast to a previous assumption by other authors. Cycloheximide (CHX), an inhibitor of eukaryotic protein synthesis, suppressed step-down appearance and enhanced step-up appearance, probably suggesting an involvement of some (newly synthesized) protein(s) specifically in the step-down photosignal detection and/or signal transduction process(es). |
| 書誌情報 |
Plant and Cell Physiology
en : Plant and Cell Physiology
巻 40,
号 2,
p. 213-221,
発行日 1999
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| 出版者 |
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出版者 |
Oxford University Press |
| ISSN |
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収録物識別子タイプ |
ISSN |
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収録物識別子 |
00320781 |
| DOI |
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識別子タイプ |
DOI |
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関連識別子 |
https://doi.org/10.1093/oxfordjournals.pcp.a029530 |
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関連名称 |
10.1093/oxfordjournals.pcp.a029530 |
| 権利 |
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権利情報 |
© 2009 The Author |
