Response of antibiotic and heavy metal resistance genes to the co-occurrence of gadolinium and sulfamethoxazole in activated sludge systems
作者机构:School of Resources and Environmental EngineeringHefei University of TechnologyHefei 230009China
出 版 物:《Frontiers of Environmental Science & Engineering》 (环境科学与工程前沿(英文))
年 卷 期:2023年第17卷第12期
页 面:163-173页
核心收录:
学科分类:083002[工学-环境工程] 0830[工学-环境科学与工程(可授工学、理学、农学学位)] 07[理学] 08[工学] 09[农学] 0903[农学-农业资源与环境] 0713[理学-生态学]
基 金:supported by the National Key R&D Program of China(No.2019YFC0408500)
主 题:Antibiotic resistance genes Heavy metal resistance genes Mobile genetic elements Joint effect Activated sludge system
摘 要:With the increasing use of antibiotics and rare earth elements(REE)during the coronavirus disease(COVID-19)pandemic,the co-occurrence of sulfamethoxazole(SMX)and gadolinium(Gd)has increased in wastewater treatment plants(WWTPs).However,the effects of SMX and Gd exposure on the transmission of antibiotic resistance genes(ARGs)and heavy metal resistance genes(MRGs)remain *** study investigated the impacts of SMX and Gd on the fate of ARGs and MRGs in an activated sludge *** diversity and relative abundance of ARGs,MRGs,and mobile genetic elements(MGEs)were detected by metagenomic *** results revealed an increased abundance of ARGs but a decreased abundance of MRGs under the joint effect of SMX and *** addition,Gd alone exerted adverse effects on the proliferation and spread of ARGs and ***,SMX alone resulted in an increase in the diversity of ARGs and MRGs and promoted the growth of Pseudomonas,Thauera,and Streptomyces in the activated sludge ***,a positive correlation was observed between most ARGs and *** findings provide comprehensive insights into the effects of co-occurring REEs and antibiotics on the fate of ARGs,MRGs,and MGEs,providing evidence to assist in controlling the spread and proliferation of ARGs and MRGs in activated sludge systems.