文献类型：期刊文献

英文题名：Effects of two ecological earthworm species on tetracycline degradation performance, pathway and bacterial community structure in laterite soil

作者：Lin, Zhong[1,2];Zhen, Zhen[3];Luo, Shuwen[3];Ren, Lei[3];Chen, Yijie[3];Wu, Weijian[3];Zhang, Weijian[3];Liang, Yan-Qiu[3];Song, Zhiguang[1,2];Li, Yongtao[4];Zhang, Dayi[5]

机构：[1]Guangdong Ocean Univ, Fac Chem & Environm Sci, Zhanjiang 524088, Peoples R China;[2]Guangdong Ocean Univ, Shenzhen Res Inst, Shenzhen 518108, Peoples R China;[3]Guangdong Ocean Univ, Coll Coastal Agr Sci, Zhanjiang 524088, Peoples R China;[4]South China Agr Univ, Coll Nat Resources & Environm, Guangzhou 510642, Peoples R China;[5]Tsinghua Univ, Sch Environm, Beijing 100084, Peoples R China

年份：2021

卷号：412

外文期刊名：JOURNAL OF HAZARDOUS MATERIALS

收录：SCI-EXPANDED(收录号：WOS:000647494800005)、、EI(收录号：20210509855461)、Scopus(收录号：2-s2.0-85100052911)、WOS

基金：This work was financially supported by National Natural Science Foundation of China (41977125, 41907033 and 31800109) , Natural Science Foundation of Guangdong Province (2019A1515011948, 2018A030313131 and 2018A030307054) , Program for Scientific Research Startup Funds of Guangdong Ocean University (R17001) and Integration Project of Guangdong Union Fund (U1901601) . DZ also acknowledges the support of Chinese Government?s Thousand Talents Plan for Young Professionals.

语种：英文

外文关键词：Amynthas robustus; Eisenia fetida; Epimerization-dehydration; Metabolic pathway; Vermiremediation

外文摘要：This study explored the change of tetracycline degradation efficiency, metabolic pathway, soil physiochemical properties and degraders in vermiremediation by two earthworm species of epigeic Eisenia fetida and endogeic Amynthas robustus. We found a significant acceleration of tetracycline degradation in both earthworm treatments, and 4-epitetracycline dehydration pathway was remarkably enhanced only by vermiremediation. Tetracycline degraders from soils, earthworm intestines and casts were different. Ralstonia and Sphingomonas were potential tetracycline degraders in soils and metabolized tetracycline through direct dehydration pathway. Degraders in earthworm casts (Comamonas, Acinetobacter and Stenotrophomonas) and intestines (Pseudomonas and Arthrobacter) dehydrated 4-epitetracycline into 4-epianhydrotetracycline. More bacterial lineages resisting tetracycline were found in earthworm treatments, indicating the adaptation of soil and intestinal flora under tetracycline pressure. Earthworm amendment primarily enhanced tetracycline degradation by neutralizing soil pH and consuming organic matters, stimulating both direct dehydration and epimerization-dehydration pathways. Our findings proved that vermicomposting with earthworms is effective to alter soil microenvironment and accelerate tetracycline degradation, behaving as a potential approach in soil remediation at tetracycline contaminated sites.