Knowledge Management System Of Shanghai Institute of Applied Physics, CAS
| Demethylation of arsenic limits its volatilization in fungi | |
| Su, SM; Zeng, XB; Feng, QF; Bai, LY; Zhang, LL; Jiang, S; Li, AG; Duan, R; Wang, XR; Wu, CX; Wang, YN; Zeng, XB (reprint author), Chinese 17 Acad Agr Sci, Environm & Sustainable Dev Agr, Zhongguancun South St 12, Beijing 100081, Peoples R China. | |
| 2015 | |
| Source Publication | ENVIRONMENTAL POLLUTION
 |
| ISSN | 0269-7491 |
| Volume | 204Pages:141—144 |
| Subtype | 期刊文献 |
| Abstract | 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. |
| Keyword | Penicillium-janthinellum Sm-12f4 Trichoderma-asperellum Sm-12f1 Fusarium-oxysporum Cz-8f1 Laboratory Conditions Methylation Speciation Soils Methyltransferase Biovolatilization Rice |
| Indexed By | SCI |
| Language | 英语 |
| WOS ID | WOS:000362608300019 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.sinap.ac.cn/handle/331007/24897 |
| Collection | 中科院上海应用物理研究所2011-2020年 |
| Corresponding Author | Zeng, XB (reprint author), Chinese 17 Acad Agr Sci, Environm & Sustainable Dev Agr, Zhongguancun South St 12, Beijing 100081, Peoples R China. |
| Recommended Citation 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.,...&Zeng, XB .(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. |
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| Demethylation of ars（585KB） | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | View Download | |
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