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Synthesis of Very-Long-Chain Fatty Acids in the Epidermis Controls Plant Organ Growth by Restricting Cell Proliferation
http://hdl.handle.net/10061/8622
http://hdl.handle.net/10061/862207765235-b938-42e4-be92-45f8d3e7719e
名前 / ファイル | ライセンス | アクション |
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fulltext (6.0 MB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2013-04-11 | |||||
タイトル | ||||||
タイトル | Synthesis of Very-Long-Chain Fatty Acids in the Epidermis Controls Plant Organ Growth by Restricting Cell Proliferation | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源タイプ | journal article | |||||
アクセス権 | ||||||
アクセス権 | open access | |||||
著者 |
Nobusawa, Takashi
× Nobusawa, Takashi× Okushima, Yoko× Nagata, Noriko× Kojima, Mikiko× Sakakibara, Hitoshi× Umeda, Masaaki |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | Plant organ growth is controlled by inter-cell-layer communication, which thus determines the overall size of the organism. The epidermal layer interfaces with the environment and participates in both driving and restricting growth via inter-cell-layer communication. However, it remains unknown whether the epidermis can send signals to internal tissue to limit cell proliferation in determinate growth. Very-long-chain fatty acids (VLCFAs) are synthesized in the epidermis and used in the formation of cuticular wax. Here we found that VLCFA synthesis in the epidermis is essential for proper development of Arabidopsis thaliana. Wild-type plants treated with a VLCFA synthesis inhibitor and pasticcino mutants with defects in VLCFA synthesis exhibited overproliferation of cells in the vasculature or in the rib zone of shoot apices. The decrease of VLCFA content increased the expression of IPT3, a key determinant of cytokinin biosynthesis in the vasculature, and, indeed, elevated cytokinin levels. These phenotypes were suppressed in ipt3;5;7 triple mutants, and also by vasculature-specific expression of cytokinin oxidase, which degrades active forms of cytokinin. Our results imply that VLCFA synthesis in the epidermis is required to suppress cytokinin biosynthesis in the vasculature, thus fine-tuning cell division activity in internal tissue, and therefore that shoot growth is controlled by the interaction between the surface (epidermis) and the axis (vasculature) of the plant body. | |||||
書誌情報 |
en : PLOS Biology 巻 11, 号 4, 発行日 2013-04-10 |
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artnum | ||||||
e1001531 | ||||||
出版者 | ||||||
出版者 | Public Library of Science | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 1544-9173 | |||||
DOI | ||||||
関連タイプ | isIdenticalTo | |||||
識別子タイプ | DOI | |||||
関連識別子 | https://doi.org/10.1371/journal.pbio.1001531 | |||||
書誌レコードID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA11886145 | |||||
権利 | ||||||
権利情報 | (c) 2013 Nobusawa et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. | |||||
著者版フラグ | ||||||
出版タイプ | VoR |