Xylem and Phloem Based Transport of CeO2 Nanoparticles in Hydroponic Cucumber Plants
文献类型：期刊论文
| 作者 | Ma YH(马宇辉) ; He X(何潇); Zhang P(张鹏); Zhang ZY(张智勇); Ding YY(丁雅韵); Zhang JZ(张珺哲); Wang GH(王国华); Xie CJ(谢昌健); Luo WH(罗文赫); Zhang J(张静)
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| 刊名 | ENVIRONMENTAL SCIENCE & TECHNOLOGY
 |
| 出版日期 | 2017 |
| 卷号 | 51期号:9页码:5215-5221 |
| ISSN号 | 0013-936X |
| DOI | 10.1021/acs.est.6b05998 |
| 文献子类 | Article |
| 英文摘要 | Uptake and translocation of manufactured nanoparticles (NPs) in plants have drawn much attention due to their potential toxicity to the environment, including food webs. In this paper, the xylem and phloem based transport of CeO2 NPs in hydroponic cucumber plants was investigated using a split-root system. One half of the root system was treated with 200 or 2000 mg/L of CeO2 NPs for 3 days, whereas the other half remained untreated, with both halves sharing the same aerial part. The quantitative distribution and speciation of Ce in different plant tissues and xylem sap were analyzed by inductively coupled plasma-mass spectrometry, transmission electron microscope, X-ray absorption near edge structure, and X-ray fluorescence. Results show that about 15% of Ce was reduced from Ce(IV) to Ce(III) in the roots of the treated-side (TS), while almost all of Ce remained Ce(IV) in the blank-side (BS). The detection of CeO2 or its transformation products in the xylem sap, shoots, and BS roots indicates that Ce was transported as a mixture of Ce(IV) and Ce(III) from roots to shoots through xylem, while it was transported almost only in the form of CeO2 from shoots back to roots through phloem. To our knowledge, this is the first report of root-to-shoot-to-root redistribution after transformation of CeO2 NPs in plants, which has significant implications for food safety and human health. |
| 电子版国际标准刊号 | 1520-5851 |
| WOS关键词 | CERIUM OXIDE NANOPARTICLES ; BIOTRANSFORMATION ; PHYTOTOXICITY ; TRANSLOCATION ; ACCUMULATION ; SATIVUS ; TRANSFORMATION ; EXPOSURE ; MATTER ; STATES |
| WOS研究方向 | Engineering ; Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:000400723200052 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/285137]  |
| 专题 | 高能物理研究所_多学科研究中心 高能物理研究所_实验物理中心 |
| 作者单位 | 中国科学院高能物理研究所 |
| 推荐引用方式 GB/T 7714 | Ma YH,He X,Zhang P,et al. Xylem and Phloem Based Transport of CeO2 Nanoparticles in Hydroponic Cucumber Plants[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY,2017,51(9):5215-5221. |
| APA | 马宇辉.,何潇.,张鹏.,张智勇.,丁雅韵.,...&Yang, K.(2017).Xylem and Phloem Based Transport of CeO2 Nanoparticles in Hydroponic Cucumber Plants.ENVIRONMENTAL SCIENCE & TECHNOLOGY,51(9),5215-5221. |
| MLA | 马宇辉,et al."Xylem and Phloem Based Transport of CeO2 Nanoparticles in Hydroponic Cucumber Plants".ENVIRONMENTAL SCIENCE & TECHNOLOGY 51.9(2017):5215-5221. |
入库方式： OAI收割
来源：高能物理研究所
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