Arsenic uptake and speciation in the rootless duckweed Wolffia globosa
文献类型：期刊论文
| 作者 | Zhu, Yong-Guan; Zhao, Fang-Jie; Huang, Qing; Williams, Paul N.; Sun, Guo-Xin; Zhang, Xin |
| 刊名 | NEW PHYTOLOGIST
 |
| 出版日期 | 2009 |
| 卷号 | 182期号:2页码:421-428 |
| 关键词 | Arsenic Duckweed Speciation Tolerance Wolffia Globosa |
| 英文摘要 | Duckweeds are a common macrophyte in paddy and aquatic environments. Here, we investigated arsenic (As) accumulation, speciation and tolerance of the rootless duckweed Wolffia globosa and its potential for As phytofiltration. When grown with 1 mu M arsenate, W. globosa accumulated two to 10 times more As than four other duckweed or Azolla species tested. W. globosa was able to accumulate > 1000 mg As kg(-1) in frond dry weight (DW), and tolerate up to 400 mg As kg-1 DW. At the low concentration range, uptake rate was similar for arsenate and arsenite, but at the high concentration range, arsenite was taken up at a faster rate. Arsenite was the predominant As species (c. 90% of the total extractable As) in both arsenate-and arsenite-exposed duckweed. W. globosa was more resistant to external arsenate than arsenite, but showed a similar degree of tolerance internally. W. globosa decreased arsenate in solution rapidly, but also effluxed arsenite. Wolffia globosa is a strong As accumulator and an interesting model plant to study As uptake and metabolism because of the lack of a root-to-frond translocation |
| WOS记录号 | WOS:000264635400015 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/21778]  |
| 专题 | 生态环境研究中心_土壤环境科学实验室 |
| 推荐引用方式 GB/T 7714 | Zhu, Yong-Guan,Zhao, Fang-Jie,Huang, Qing,et al. Arsenic uptake and speciation in the rootless duckweed Wolffia globosa[J]. NEW PHYTOLOGIST,2009,182(2):421-428. |
| APA | Zhu, Yong-Guan,Zhao, Fang-Jie,Huang, Qing,Williams, Paul N.,Sun, Guo-Xin,&Zhang, Xin.(2009).Arsenic uptake and speciation in the rootless duckweed Wolffia globosa.NEW PHYTOLOGIST,182(2),421-428. |
| MLA | Zhu, Yong-Guan,et al."Arsenic uptake and speciation in the rootless duckweed Wolffia globosa".NEW PHYTOLOGIST 182.2(2009):421-428. |
入库方式： OAI收割
来源：生态环境研究中心
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