A Slow-Release Substrate Stimulates Groundwater Microbial Communities for Long-Term in Situ Cr(VI) Reduction
文献类型：期刊论文
| 作者 | Zhang, Ping; Van Nostrand, Joy D.; He, Zhili; Chakraborty, Romy; Deng, Ye; Curtis, Daniel; Fields, Matthew W.; Hazen, Terry C.; Arkin, Adam P.; Zhou, Jizhong |
| 刊名 | ENVIRONMENTAL SCIENCE & TECHNOLOGY
 |
| 出版日期 | 2015-11-03 |
| 卷号 | 49期号:21页码:12922-12931 |
| 英文摘要 | Cr(VI) is a widespread environmental contaminant that is highly toxic and soluble. Previous work indicated that a one-time amendment of polylactate hydrogen-release compound (HRC) reduced groundwater Cr(VI) concentrations for >3.5 years at a contaminated aquifer; however, microbial communities responsible for Cr(VI) reduction are poorly understood. In this study, we hypothesized that HRC amendment would significantly change the composition and structure of groundwater microbial communities, and that the abundance of key functional genes involved in HRC degradation and electron acceptor reduction would increase long-term in response to this slowly degrading complex substrate. To test these hypotheses, groundwater microbial communities were monitored after HRC amendment for >1 year using a comprehensive functional gene microarray. The results showed that the overall functional composition and structure of groundwater microbial communities underwent sequential shifts after HRC amendment. Particularly, the abundance of functional genes involved in acetate oxidation, denitrification, dissimilatory nitrate reduction, metal reduction, and sulfate reduction significantly increased. The overall community dynamics was significantly correlated with changes in groundwater concentrations of microbial biomass, acetate, NO3-, Cr(VI), Fe(II) and SO42-. Our results suggest that HRC amendment primarily stimulated key functional processes associated with HRC degradation and reduction of multiple electron acceptors in the aquifer toward long-term Cr(VI) reduction. |
| WOS研究方向 | Engineering, Environmental ; Environmental Sciences |
| WOS记录号 | WOS:000364355300037 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/32909]  |
| 专题 | 生态环境研究中心_中国科学院环境生物技术重点实验室 |
| 推荐引用方式 GB/T 7714 | Zhang, Ping,Van Nostrand, Joy D.,He, Zhili,et al. A Slow-Release Substrate Stimulates Groundwater Microbial Communities for Long-Term in Situ Cr(VI) Reduction[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY,2015,49(21):12922-12931. |
| APA | Zhang, Ping.,Van Nostrand, Joy D..,He, Zhili.,Chakraborty, Romy.,Deng, Ye.,...&Zhou, Jizhong.(2015).A Slow-Release Substrate Stimulates Groundwater Microbial Communities for Long-Term in Situ Cr(VI) Reduction.ENVIRONMENTAL SCIENCE & TECHNOLOGY,49(21),12922-12931. |
| MLA | Zhang, Ping,et al."A Slow-Release Substrate Stimulates Groundwater Microbial Communities for Long-Term in Situ Cr(VI) Reduction".ENVIRONMENTAL SCIENCE & TECHNOLOGY 49.21(2015):12922-12931. |
入库方式： OAI收割
来源：生态环境研究中心
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