Concurrent methylation and demethylation of arsenic by fungi and their differential expression in the protoplasm proteome
文献类型：期刊论文
| 作者 | Su, SM; Zeng, XB; Bai, LY; Wang, YA; Zhang, LL; Li, MS; Wu, CX |
| 刊名 | ENVIRONMENTAL POLLUTION
 |
| 出版日期 | 2017 |
| 卷号 | 225页码:620-627 |
| 关键词 | Demethylation Mma(v) Xanes Fungi Itraq |
| ISSN号 | 0269-7491 |
| DOI | 10.1016/j.envpol.2017.03.030 |
| 文献子类 | 期刊论文 |
| 英文摘要 | Microbial methylation and demethylation are central to arsenic's (As) biogeochemical cycling. Here, the transformations of monomethylarsonic acid (MMA(V)) (50 mg L-1) for 15 days in cells of As-methylating fungi, Fusarium oxysporum CZ-8F1, Penicillium janthinellum SM-12F4, and Trichoderma asperellum SM-12F1, were evaluated, and trace concentrations of As(III) and As(V) were observed in fungal cell extracts. Trace amounts of DMA(V) were also detected in MMA(V) and P.janthinellum SM-12F4 incubations. In situ X-ray absorption near edge structure (XANES) indicated that after exposure to MMA(V) (500 mg L-1) for 15 days, 28.6-48.6% of accumulated As in fungal cells was DMA(V), followed by 18.4 -30.3% from As(V), 0-28.1% from As(III), and 4.8-28.9% from MMA(V). The concurrent methylation and demethylation of As occurs in fungal cells. Furthermore, a majority of proteins involved in metabolism, transport, ATP activity, biosynthesis, signal transduction, DNA activity, translation, and oxidative stress were upregulated in T. asperellum SM-12F1 cells after MMA(V) exposure compared to As(III), As(V), and DMA(V). The detoxification process of T. asperellum SM-12F1 was As species-specific. Methylenetetrahydrofolate reductase (R7YMHO) donation of a methyl group for S-adenosylmethionine (SAM) generation significantly increased following MMA(V) exposure. (C) 2017 Elsevier Ltd. All rights reserved. |
| 语种 | 英语 |
| WOS记录号 | WOS:000401679200067 |
| 源URL | [http://ir.sinap.ac.cn/handle/331007/27282]  |
| 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,Bai, LY,et al. Concurrent methylation and demethylation of arsenic by fungi and their differential expression in the protoplasm proteome[J]. ENVIRONMENTAL POLLUTION,2017,225:620-627. |
| APA | Su, SM.,Zeng, XB.,Bai, LY.,Wang, YA.,Zhang, LL.,...&Wu, CX.(2017).Concurrent methylation and demethylation of arsenic by fungi and their differential expression in the protoplasm proteome.ENVIRONMENTAL POLLUTION,225,620-627. |
| MLA | Su, SM,et al."Concurrent methylation and demethylation of arsenic by fungi and their differential expression in the protoplasm proteome".ENVIRONMENTAL POLLUTION 225(2017):620-627. |
入库方式： OAI收割
来源：上海应用物理研究所
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