期刊
BIORESOURCE TECHNOLOGY
卷 218, 期 -, 页码 1284-1289出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2016.07.097
关键词
Diverse pHs; Sludge anaerobic treatment; Tetracycline resistance genes; Tetracycline resistant bacteria; Horizontal transfer
资金
- National Science Foundation of China [51425802, 51578394, 51278354]
- Program of Shanghai Subject Chief Scientist [15XD1503400]
- Fundamental Research Funds for Central Universities
- Research Fund of Tianjin Key Laboratory of Aquatic Science and Technology [TJKLAST-ZD-2014-08]
Although pH value has been widely regarded as an important factor that affects resource recovery of waste sludge, the potential influence of diverse pHs on the distribution of tetracycline resistance genes (TRGs) during sludge anaerobic treatment is largely unknown. Here we reported that in the range of pH 4-10, 0.58-1.18 log unit increase of target TRGs was observed at pH 4, compared with that at pH 7, while 0.70-1.31 log unit further removal were obtained at pH 10. Mechanism study revealed that varied pHs not only altered the community structures of tetracycline resistant bacteria (TRB), but also changed their relative abundances, benefitting the propagation (acidic pHs) or attenuation (alkaline pHs) of TRB. Further investigation indicated that the amount and gene-possessing abilities of key genetic vectors for horizontal TRGs transfer were greatly promoted at acidic pHs but restricted under alkaline conditions. (C) 2016 Elsevier Ltd. 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