| Item type |
共通(1) |
| 公開日 |
2018-01-15 |
| タイトル |
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タイトル |
Suppression of Hydroxycinnamate Network Formation in Cell Walls of Rice Shoots Grown under Microgravity Conditions in Space |
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言語 |
en |
| 作成者 |
若林, 和幸
曽我, 康一
保尊, 隆享
小竹, 敬久
山崎, 丘
東端, 晃
石岡, 憲昭
嶋津, 徹
福井, 啓二
長田, 郁子
| en |
Osada, Ikuko
Japan Manned Space Systems Corp.
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| ja-Kana |
オサダ, イクコ
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| ja |
長田, 郁子
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Search repository
笠原, 春夫
| en |
Kasahara, Haruo
Japan Manned Space Systems Corp.
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| ja-Kana |
カサハラ, ハルオ
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| ja |
笠原, 春夫
|
Search repository
鎌田, 源司
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| 権利情報 |
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言語 |
ja |
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権利情報Resource |
https://creativecommons.org/licenses/by/4.0/ |
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権利情報 |
クリエイティブ・コモンズ 表示 4.0 国際 |
| 権利情報 |
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言語 |
en |
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権利情報Resource |
https://creativecommons.org/licenses/by/4.0/ |
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権利情報 |
Creative Commons Attribution 4.0 International |
| 権利情報 |
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言語 |
en |
|
権利情報 |
© 2015 Wakabayashi et al. |
| 内容記述 |
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内容記述タイプ |
Abstract |
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内容記述 |
Network structures created by hydroxycinnamate cross-links within the cell wall architecture of gramineous plants make the cell wall resistant to the gravitational force of the earth. In this study, the effects of microgravity on the formation of cell wall-bound hydroxycinnamates were examined using etiolated rice shoots simultaneously grown under artificial 1 g and microgravity conditions in the Cell Biology Experiment Facility on the International Space Station. Measurement of the mechanical properties of cell walls showed that shoot cell walls became stiff during the growth period and that microgravity suppressed this stiffening. Amounts of cell wall polysaccharides, cell wall-bound phenolic acids, and lignin in rice shoots increased as the shoot grew. Microgravity did not influence changes in the amounts of cell wall polysaccharides or phenolic acid monomers such as ferulic acid (FA) and p-coumaric acid, but it suppressed increases in diferulic acid (DFA) isomers and lignin. Activities of the enzymes phenylalanine ammonia-lyase (PAL) and cell wall-bound peroxidase (CW-PRX) in shoots also increased as the shoot grew. PAL activity in microgravity-grown shoots was almost comparable to that in artificial 1 g-grown shoots, while CW-PRX activity increased less in microgravity-grown shoots than in artificial 1 g-grown shoots. Furthermore, the increases in expression levels of some class III peroxidase genes were reduced under microgravity conditions. These results suggest that a microgravity environment modifies the expression levels of certain class III peroxidase genes in rice shoots, that the resultant reduction of CW-PRX activity may be involved in suppressing DFA formation and lignin polymerization, and that this suppression may cause a decrease in cross-linkages within the cell wall architecture. The reduction in intra-network structures may contribute to keeping the cell wall loose under microgravity conditions. |
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言語 |
en |
| 出版者 |
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出版者 |
Public Library of Science |
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言語 |
en |
| 言語 |
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言語 |
eng |
| 記事種別等 |
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内容記述タイプ |
Other |
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内容記述 |
Research Article |
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言語 |
en |
| 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 |
| 出版タイプ |
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出版タイプ |
VoR |
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出版タイプResource |
http://purl.org/coar/version/c_970fb48d4fbd8a85 |
| 識別子 |
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識別子 |
https://doi.org/10.1371/journal.pone.0137992 |
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識別子タイプ |
DOI |
| 書誌情報 |
en : PLOS ONE
巻 10,
号 9,
p. e0137992,
発行日 2015-09-17
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| 収録物識別子 |
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収録物識別子タイプ |
ISSN |
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収録物識別子 |
1932-6203 |
本文 (2.2 MB)
