Humic analog AQDS and AQS as an electron mediator can enhance chromate reduction by Bacillus sp strain 3C(3)
文献类型：期刊论文
| 作者 | Hong, YG ; Wu, P ; Li, WR ; Gu, JG ; Duan, SS |
| 刊名 | APPLIED MICROBIOLOGY AND BIOTECHNOLOGY
 |
| 出版日期 | 2012 |
| 卷号 | 93期号:6页码:2661-2668 |
| 关键词 | Humic reduction Electron mediator Chromate reduction Bacillus sp strain 3C(3) |
| ISSN号 | 0175-7598 |
| 通讯作者 | yghong@scsio.ac.cn |
| 中文摘要 | Humus as an electron mediator is recognized as an effective strategy to improve the biological transformation and degradation of toxic substances, yet the action of humus in microbial detoxification of chromate is still unknown. In this study, a humus-reducing strain 3C(3) was isolated from mangrove sediment. Based on the analyses of morphology, physiobiochemical characteristics, and 16S rRNA gene sequence, this strain was identified Bacillus sp. Strain 3C(3) can effectively reduce humic analog anthraquinone-2,6-disulfonate (AQDS) and anthraquinone-2-sulfonate (AQS) with lactate, formate, or glucose as electron donors. When the cells were killed by incubation at 95A degrees C for 30 min or an electron donor was absent, the humic reduction did not occur, showing that the humic reduction was a biochemical process. However, strain 3C(3) had low capability of chromate reduction under anaerobic conditions, despite of having strong tolerance of the toxic metal. But in the presence of humic substances AQDS or AQS, we found that chromate reduction by strain 3C(3) was enhanced greatly. Because strain 3C(3) is an effective humus-reducing bacterium, it is proposed that humic substances could serve as electron mediator to interact with chromate and accelerate chromate reduction. Our results suggest that chromate contaminations can be detoxified by adding humic analog (low to 0.1 mM) as an electron mediator in the microbial incubation. |
| 学科主题 | Biotechnology & Applied Microbiology |
| 语种 | 英语 |
| WOS记录号 | WOS:000301181600042 |
| 公开日期 | 2013-08-28 |
| 源URL | [http://ir.scsio.ac.cn/handle/344004/10209]  |
| 专题 | 南海海洋研究所_热带海洋环境国家重点实验室(LTO) |
| 推荐引用方式 GB/T 7714 | Hong, YG,Wu, P,Li, WR,et al. Humic analog AQDS and AQS as an electron mediator can enhance chromate reduction by Bacillus sp strain 3C(3)[J]. APPLIED MICROBIOLOGY AND BIOTECHNOLOGY,2012,93(6):2661-2668. |
| APA | Hong, YG,Wu, P,Li, WR,Gu, JG,&Duan, SS.(2012).Humic analog AQDS and AQS as an electron mediator can enhance chromate reduction by Bacillus sp strain 3C(3).APPLIED MICROBIOLOGY AND BIOTECHNOLOGY,93(6),2661-2668. |
| MLA | Hong, YG,et al."Humic analog AQDS and AQS as an electron mediator can enhance chromate reduction by Bacillus sp strain 3C(3)".APPLIED MICROBIOLOGY AND BIOTECHNOLOGY 93.6(2012):2661-2668. |
入库方式： OAI收割
来源：南海海洋研究所
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