A methyltransferase gene from arbuscular mycorrhizal fungi involved in arsenic methylation and volatilization
文献类型：期刊论文
| 作者 | Li, Jinglong ; Sun, Yuqing; Zhang, Xin; Hu, Yajun; Li, Tao; Zhang, Xuemeng; Wang, Zhi; Wu, Songlin; Wu, Zhaoxiang; Chen, Baodong
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| 刊名 | CHEMOSPHERE
 |
| 出版日期 | 2018-10-01 |
| 卷号 | 209页码:392-400 |
| 关键词 | Methyltransferase gene Rhizophagus irregularis Heterologous expression Arsenic methylation Arsenic volatilization |
| ISSN号 | 0045-6535 |
| 文献子类 | Article |
| 英文摘要 | Arbuscular mycorrhizal fungi (AMF), ubiquitous symbiotic fungi associated with the majority of terrestrial plants, were demonstrated to play important roles in arsenic (As) translocation and transformation in the plant-soil continuum, and substantially influence plant As tolerance. However, the direct involvement of AMF in As methylation and volatilization and their molecular mechanisms remain unsolved. Here, an arsenite methyltransferase gene RiMT-11 was identified and characterized from AM fungus Rhizophagus irregularis. Heterologous expression of RiMT-11 enhanced arsenite resistance of E. coli (Delta ars) through methylating As into monomethylarsonic acid (MMA), dimethylarsinic acid (DMA) and ultimately volatile trimethyl arsine (TMAs). In a two-compartment in vitro monoxenic cultivation system, methylated and volatile As were also detected from AM symbioses with arsenate addition, accompanied by strong up-regulation of RiMT-11 expression in extraradical hyphae. The present study provided direct evidence and illustrated an underlying mechanism of As methylation and volatilization by AMF, leading to a deeper insight into the role of AMF in As biogeochemical cycling. (C) 2018 Elsevier Ltd. All rights reserved. |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/40444]  |
| 专题 | 生态环境研究中心_城市与区域生态国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Li, Jinglong,Sun, Yuqing,Zhang, Xin,et al. A methyltransferase gene from arbuscular mycorrhizal fungi involved in arsenic methylation and volatilization[J]. CHEMOSPHERE,2018,209:392-400. |
| APA | Li, Jinglong.,Sun, Yuqing.,Zhang, Xin.,Hu, Yajun.,Li, Tao.,...&Chen, Baodong.(2018).A methyltransferase gene from arbuscular mycorrhizal fungi involved in arsenic methylation and volatilization.CHEMOSPHERE,209,392-400. |
| MLA | Li, Jinglong,et al."A methyltransferase gene from arbuscular mycorrhizal fungi involved in arsenic methylation and volatilization".CHEMOSPHERE 209(2018):392-400. |
入库方式： OAI收割
来源：生态环境研究中心
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