Arsenic biotransformation and volatilization in transgenic rice
文献类型：期刊论文
| 作者 | Meng, Xiang-Yan ; Qin, Jie ; Wang, Li-Hong ; Duan, Gui-Lan ; Sun, Guo-Xin ; Wu, Hui-Lan ; Chu, Cheng-Cai ; Ling, Hong-Qing ; Rosen, Barry P. ; Zhu, Yong-Guan |
| 刊名 | NEW PHYTOLOGIST
 |
| 出版日期 | 2011 |
| 卷号 | 191期号:1页码:49—56 |
| 关键词 | arsenic methylation As(III) S-adenosylmethyltransferase food safety transgenic rice volatile arsenicals |
| 中文摘要 | Biotransformation of arsenic includes oxidation, reduction, methylation, and conversion to more complex organic arsenicals. Members of the class of arsenite (As(III)) S-adenosylmethyltransferase enzymes catalyze As(III) methylation to a variety of mono-, di-, and trimethylated species, some of which are less toxic than As(III) itself. However, no methyltransferase gene has been identified in plants. Here, an arsM gene from the soil bacterium Rhodopseudomonas palustris was expressed in Japonica rice (Oryza sativa) cv Nipponbare, and the transgenic rice produced methylated arsenic species, which were measured by inductively coupled plasma mass spectrometry (ICP-MS) and high-performance liquid chromatography-inductively coupled plasma mass spectrometry (HPLC-ICP-MS). Both monomethylarsenate (MAs(V)) and dimethylarsenate (DMAs(V)) were detected in the roots and shoots of transgenic rice. After 12 d exposure to As(III), the transgenic rice gave off 10-fold greater volatile arsenicals. The present study demonstrates that expression of an arsM gene in rice induces arsenic methylation and volatilization, theoretically providing a potential stratagem for phytoremediation. |
| 公开日期 | 2012-10-18 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/7144]  |
| 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 | Meng, Xiang-Yan,Qin, Jie,Wang, Li-Hong,et al. Arsenic biotransformation and volatilization in transgenic rice[J]. NEW PHYTOLOGIST,2011,191(1):49—56. |
| APA | Meng, Xiang-Yan.,Qin, Jie.,Wang, Li-Hong.,Duan, Gui-Lan.,Sun, Guo-Xin.,...&Zhu, Yong-Guan.(2011).Arsenic biotransformation and volatilization in transgenic rice.NEW PHYTOLOGIST,191(1),49—56. |
| MLA | Meng, Xiang-Yan,et al."Arsenic biotransformation and volatilization in transgenic rice".NEW PHYTOLOGIST 191.1(2011):49—56. |
入库方式： OAI收割
来源：生态环境研究中心
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