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Molecular mechanisms for reducing inorganic arsenic level in rice grains
http://hdl.handle.net/10458/6901
http://hdl.handle.net/10458/69015bc7b5a0-d410-4955-b4e5-6a4b022ce22e
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
本文 (1.0 MB)
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| Item type | その他 / Others(1) | |||||
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| 公開日 | 2020-06-22 | |||||
| タイトル | ||||||
| タイトル | Molecular mechanisms for reducing inorganic arsenic level in rice grains | |||||
| 言語 | en | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| キーワード | ||||||
| 言語 | en | |||||
| 主題Scheme | Other | |||||
| 主題 | food safety, inorganic arsenic, phytochelatin, rice, transporter | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_1843 | |||||
| 資源タイプ | other | |||||
| 著者 |
Ishikawa, Satoru
× Ishikawa, Satoru× Hayashi, Shimpei× Kuramata, Masato× Abe, Tadashi |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | Dietary exposure to arsenic （As） has become a serious issue because it may pose a health risk. In particular, rice is a major source of inorganic As （the more toxic form） for a large part of the world's population. The greater assimilation of As by rice than by other crops is mainly attributed to two reasons: the high arsenite bioavailability in reductive paddy soil and the high ability to transport arsenite through silicon transporters. The molecular mechanisms relating to As uptake and transport from soil to rice grains have been increasingly explored. Here, we report that two genes, OsABCCI and OsPCSI, are essential to control inorganic As in rice grains. The OsABCCI encodes an ABC transporter located in the vacuolar membrane and its transporter can trap inorganic As by sequestering in As-phytochelatin （PC） complexes in vacuoles of rice nodes. PCs are synthesized from glutathione by phytochelatin synthase （OsPCSl） and PC synthesis is induced by the contact of PCSs with harzardous metals such as As and cadmium. The transgenic rice lines over-expressing OsPCSI showed a significantly lower grain As level than the wild-type rice. Therefore, modifying the OsPCSI expression would be an approach to breeding rice cultivars with low inorganic As in the grains. | |||||
| 言語 | en | |||||
| 書誌情報 |
en : 5th International Arsenic Symposium in MIYAZAKI 2018 p. 96-98, 発行日 2018-06 |
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| 出版者 | ||||||
| 出版者 | University of Miyazaki, IRISH | |||||
| 言語 | en | |||||
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| 出版タイプ | VoR | |||||
| 出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||
