Demethylation of arsenic limits its volatilization in fungi
文献类型：期刊论文
| 作者 | Su, SM; Zeng, XB; Feng, QF; Bai, LY; Zhang, LL; Jiang, S; Li, AG; Duan, R; Wang, XR; Wu, CX |
| 刊名 | ENVIRONMENTAL POLLUTION
 |
| 出版日期 | 2015 |
| 卷号 | 204页码:141—144 |
| 关键词 | PENICILLIUM-JANTHINELLUM SM-12F4 TRICHODERMA-ASPERELLUM SM-12F1 FUSARIUM-OXYSPORUM CZ-8F1 LABORATORY CONDITIONS METHYLATION SPECIATION SOILS METHYLTRANSFERASE BIOVOLATILIZATION RICE |
| ISSN号 | 0269-7491 |
| 通讯作者 | Zeng, XB (reprint author), Chinese 17 Acad Agr Sci, Environm & Sustainable Dev Agr, Zhongguancun South St 12, Beijing 100081, Peoples R China. |
| 英文摘要 | Arsenic (As) biomethylation is increasingly being regarded as a promising method to volatize As from the environment; however, the As volatilization efficiency of most microorganisms is low. Here, the speciation transformation of dimethylarsinic acid (DMA) as an important methylation intermediate in the cells of Fusarium oxysporum CZ-8F1, Penicillium janthinellum SM-12F4, and Trichoderma asperelium SM-12F1 were investigated. These fungal strains have been certified to volatilize As from As-loaded environment. In situ X-ray absorption near edge structure (XANES) indicated that demethylation of DMA with methylarsonic acid (MMA), arsenate [As(V)], and arsenite [As(III)] as intermediates or products occurred in fungal cells after exposure to DMA for 15 days. 36.7-55.7% of the original DMA could lose one or two methyl groups and be changed into MMA or inorganic As. Chromatographic separation of the cell lysates also supported these findings. Thus it comes that demethylation might be a remarkable internal factor limiting As volatilization efficiency. (C) 2015 Elsevier Ltd. All rights reserved. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000362608300019 |
| 公开日期 | 2016-03-08 |
| 源URL | [http://ir.sinap.ac.cn/handle/331007/24897]  |
| 专题 | 上海应用物理研究所_中科院上海应用物理研究所2011-2017年 |
| 推荐引用方式 GB/T 7714 | Su, SM,Zeng, XB,Feng, QF,et al. Demethylation of arsenic limits its volatilization in fungi[J]. ENVIRONMENTAL POLLUTION,2015,204:141—144. |
| APA | Su, SM.,Zeng, XB.,Feng, QF.,Bai, LY.,Zhang, LL.,...&Wang, YN.(2015).Demethylation of arsenic limits its volatilization in fungi.ENVIRONMENTAL POLLUTION,204,141—144. |
| MLA | Su, SM,et al."Demethylation of arsenic limits its volatilization in fungi".ENVIRONMENTAL POLLUTION 204(2015):141—144. |
入库方式： OAI收割
来源：上海应用物理研究所
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