期刊
JOURNAL OF HAZARDOUS MATERIALS
卷 325, 期 -, 页码 129-135出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jhazmat.2016.11.072
关键词
Copper; Antibiotics; Microorganisms; Pollution-induced community tolerance (PICT)
资金
- Natural Science Foundation of China [21577007, 21277013]
- National Key Research and Development Program of China [2016YFD0800204]
In order to be more practical on evaluating the response of soil microbial communities to Cu contamination, we compared the microbial activity and selection for the microbial tolerance after a high level Cu exposure in single and corresponding repeated addition. It was shown that the activities of microorganisms in soils were largely inhibited by the exposure of Cu in a level of 32.9 mmol/kg, Specifically, single application displayed larger toxicity and longer-term effects on the microbial activity than the same amount of Cu that were repeatedly added by several times. Moreover, microbial tolerances to Cu and tylosin were observed in the soils contaminated by Cu. The repeated addition of Cu caused a higher tolerance to tylosin than that in a single addition, suggesting the repeated exposure has mitigated the toxicity and promote the selection for tolerant bacteria. Finally, it was observed that the organic pollutant (e.g. sulfadiazine) was degraded in the soils in an increasing order of sterilization< single-Cu addition < repeated-Cu addition < control, which was in agreement of microbial activities and emphasized the influence of Cu exposure on the soil function. (C) 2016 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据