文献类型：期刊文献

英文题名：The impact on the soil microbial community and enzyme activity of two earthworm species during the bioremediation of pentachlorophenol-contaminated soils

作者：Lin, Zhong[1,2];Zhen, Zhen[1];Wu, Zhihao[2];Yang, Jiewen[1];Zhong, Laiyuan[1];Hu, Hanqiao[1];Luo, Chunling[3];Bai, Jing[2];Li, Yongtao[2];Zhang, Dayi[4]

机构：[1]Guangdong Ocean Univ, Coll Agr, Zhanjiang 524088, Peoples R China;[2]South China Agr Univ, Coll Nat Resources & Environm, Guangzhou 510642, Guangdong, Peoples R China;[3]Chinese Acad Sci, Guangzhou Inst Geochem, Guangzhou 510640, Guangdong, Peoples R China;[4]Univ Lancaster, Lancaster Environm Ctr, Lancaster LA1 2YW, England

年份：2016

卷号：301

起止页码：35

外文期刊名：JOURNAL OF HAZARDOUS MATERIALS

收录：SCI-EXPANDED(收录号：WOS:000367407200005)、、EI(收录号：20153601240664)、Scopus(收录号：2-s2.0-84940703371)、WOS

基金：This work was financially supported by the National Nature Science Foundation of China (No. 41301252, No. 41171210 and No. 41271263).

语种：英文

外文关键词：Bacteria - Bioremediation - Biotechnology - Enzyme activity - Herbicides - Phenols - Soils

外文摘要：The ecological effect of earthworms on the fate of soil pentachlorophenol (PCP) differs with species. This study addressed the roles and mechanisms by which two earthworm species (epigeic Eisenia fetida and endogeic Amynthas robustus E. Perrier) affect the soil microbial community and enzyme activity during the bioremediation of PCP-contaminated soils. A. robustus removed more soil PCP than did E. foetida. A. robustus improved nitrogen utilisation efficiency and soil oxidation more than did E. foetida, whereas the latter promoted the organic matter cycle in the soil. Both earthworm species significantly increased the amount of cultivable bacteria and actinomyces in soils, enhancing the utilisation rate of the carbon source (i.e. carbohydrates, carboxyl acids, and amino acids) and improving the richness and evenness of the soil microbial community. Additionally, earthworm treatment optimized the soil microbial community and increased the amount of the PCP-4-monooxygenase gene. Phylogenic classification revealed stimulation of indigenous PCP bacterial degraders, as assigned to the families Flavobacteriaceae, Pseudomonadaceae and Sphingobacteriacea, by both earthworms. A. robustus and E. foetida specifically promoted Comamonadaceae and Moraxellaceae PCP degraders, respectively. (C) 2015 Elsevier B.V. All rights reserved.