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Behavior of 14C from acetic acid in paddy rice and root-uptake of 14C by rice plant
https://repo.qst.go.jp/records/69635
https://repo.qst.go.jp/records/69635ae2ef108-3d82-4308-a9f4-de84581709e0
| Item type | 会議発表用資料 / Presentation(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2008-12-12 | |||||
| タイトル | ||||||
| タイトル | Behavior of 14C from acetic acid in paddy rice and root-uptake of 14C by rice plant | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_c94f | |||||
| 資源タイプ | conference object | |||||
| アクセス権 | ||||||
| アクセス権 | metadata only access | |||||
| アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
| 著者 |
Ogiyama, Shinichi
× Ogiyama, Shinichi× Takeda, Hiroshi× Uchida, Shigeo× 荻山 慎一× 武田 洋× 内田 滋夫 |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | For safety assessment of geological disposal of transuranic (TRU) waste, it is necessary to clarify behavior of carbon such as carboxylic acids from soil to plants. Present study was conducted to examine behavior of carbon in soil-plant system using rice plant (Oryza sativa L.), three types of paddy soils, and 14C nuclide in the form of acetic acid. The plant was raised in a column (Ø=20mm) filled with paddy soil. 14C-acetic acid (1, 2-14C) was injected to the column bottom (300 kBq) after grain-forming stage of the plant. Plants were harvested at 3 days, 1, 2, 3, and 4 weeks after 14C injection, and soil samples were also taken from six layers (every 5 cm each). The 14C radioactivity levels in the plant and soil layers were determined. The distribution of 14C in the plant was visualized using autoradiography. The 14C radioactivity in the soils varied significantly depending on the soil types. Although large amount of 14C in the soils would be released to air as gaseous form, 14C nuclide was still existed in the soils. In every soil, the 14C radioactivity in the surface layers was higher than that in the sub-layers. Clear images of 14C distribution in the whole plants were observed on the autoradiography at 3 weeks after 14C injection. The results indicated that inorganic 14C was produced from the breakdown of 14C-acetic acid by soil microorganisms in the early stage. Then, 14C moved upward associated with water or gas movement. In the surface layers, 14C fixation would be caused by microbial activity such as photosynthesis by algae as well as physical fixation to soil particles. Root-uptake of 14C by the plant was carried out as uptake of 14C in inorganic forms such as CO2. | |||||
| 会議概要（会議名, 開催地, 会期, 主催者等） | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | ７ｔｈ International Symposium for Subsurface Microbiology | |||||
| 発表年月日 | ||||||
| 日付 | 2008-11-21 | |||||
| 日付タイプ | Issued | |||||
