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| Screening of rhizomatic accumulators to uranium and cadmium |
| Received:June 20, 2016 |
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| KeyWord:rhizomatic accumulator;uranium;cadmium |
| Author Name | Affiliation | E-mail | | JIANG Wen-jing | College of Life Science and Engineering, Southwest University of Science and Technology, Mianyang 621010, China
State Defense Key Laboratory of the Nuclear Waste and Environmental Security, Southwest University of Science and Technology, Mianyang 621010, China | | | WANG Dan | College of Life Science and Engineering, Southwest University of Science and Technology, Mianyang 621010, China
State Defense Key Laboratory of the Nuclear Waste and Environmental Security, Southwest University of Science and Technology, Mianyang 621010, China | wangdan@swust.cdu.cn | | YAO Tian-yue | College of Life Science and Engineering, Southwest University of Science and Technology, Mianyang 621010, China
State Defense Key Laboratory of the Nuclear Waste and Environmental Security, Southwest University of Science and Technology, Mianyang 621010, China | |
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| Abstract: |
| To study plants uranium(U) and cadmium(Cd) enrichment characteristics is significance. The U-Cd-contaminated soil was conducted to study the tolerance,accumulation and transformation of U and Cd using eight rhizomatic plants(Saussurea involucrata, Colocasia esculenta L., Acorus calamus L., Alocasia macrorrhiza L., Ipomoea batatas, Dioscorea Transversa, Solanum tuberosum, Brassica oleracea var. caulorapa, Helianthus annuus) under the additional 150 mg·kg-1 U,15 mg·kg-1 Cd; The sunflower worked as CK. The advantage of evaluation method was used to synthesized comment these plants. Results was showed that the roots of the implemented plants are the main parts to store the U and Cd; the translocation factor from the underground part to the storage is lower than the factor from the storage to up-ground part; the synthesized comment of Saussurea involucrata, with the best tolerance and stronger capability in extracting and accumulating U and Cd, is the highest among the eight species of plants. The U content in underground part and the bioaccumulation factor of Saussurea involucrata are up to 638.89 mg·kg-1 DW and 4.26, respectively. Moreover, the single U bioaccumulation quantity and the total U and Cd bioaccumulation quantity of Saussurea involucrata are also highest up to 3 564.75 μg and 4 342.95 μg, respectively. On the contrary, the Brassica oleracea var. caulorapa perform worst in this experiment, whose U and Cd contents are down to 1.45 mg·kg-1 DW和11.45 mg·kg-1 DW, respectively. The Brassica oleracea var. caulorapa has the ability to recycle the contaminated soil. |
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