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Effect of preferential UV photolysis on the source control of antibiotic resistome during subsequent biological treatment systems

机译：优先紫外线光解对随后的生物处理系统中抗生素抗性源控制的影响

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摘要

The environmental spread of antibiotic resistance genes (ARGs) from the direct application of traditional biological treatment systems for antibiotics in water is a potential public health threat. UV photolysis has been proved to be an efficient pretreatment method for antibacterial activity elimination, but the fate of antibiotic resistome in subsequent bioreactors fed with pretreated florfenicol (FLO) in synthetic wastewater is still unknown. Antibacterial activity in synthetic wastewater was effectively eliminated by UV irradiation pretreatment, and the diversity and abundance of detected ARGs in both aerobic and anaerobic bioreactors were significantly lower than those without pretreatment. Meanwhile, UV irradiation pretreatment shaped the structure and composition of sludge microbial communities in the subsequent bioreactors closer to those of the FLO-free groups. The relative abundances of Pseudomonas and Escherichia-Shigella working as the potential hosts of ARGs were significantly reduced in aerobic and anaerobic bioreactors, respectively. The significantly positive correlation between floR and intI1 and the decrease of intI1 abundance in UV photolytic pretreatment groups indicated that the horizontal transfer of floR was decreased. The study provides new insights into the effect of preferential UV photolysis as a pretreatment method on the source control of antibiotic resistome in subsequent biological treatment process.
机译：从直接应用传统的生物治疗系统在水中的传统生物处理系统的抗生素抗性基因（Args）的环境传播是潜在的公共卫生威胁。已经证明UV光解是一种有效的预处理方法，用于消除抗菌活性的预处理方法，但随后的生物反应器中抗生素反应器的命运仍然不为人知。通过UV辐射预处理有效地消除了合成废水中的抗菌活性，并且有氧和厌氧生物反应器中检测到的args的多样性和丰度显着低于无预处理的蛋白。同时，UV辐射预处理成形了后续生物反应器中的污泥微生物群落的结构和组成，更接近无氟基团的生物反应器。作为潜在宿主的Pseudomonas和Escherichia-shigella的相对丰富分别在有氧和厌氧生物反应器中显着降低。 Flor和Inti1之间的显着正相关性和UV光解预处理组中的INTI1丰度的降低表明Flor的水平转移降低。该研究提供了新的见解，进入优先紫外线光解作为预处理方法对随后的生物处理过程中抗生素抗蚀剂源控制的预处理方法的影响。

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  • 来源
    《Journal of Hazardous Materials》 |2021年第15期|125484.1-125484.10|共10页
  • 作者

    Ding Yangcheng; Liang Bin; Jiang Wenli; Han Jinglong; Guadie Awoke; Yun Hui; Cheng Haoyi; Yang Renjun; Liu Shuang-Jiang; Wang Aijie; Ren Nanqi;

  • 作者单位

    Harbin Inst Technol Shenzhen Sch Civil & Environm Engn Shenzhen 518055 Peoples R China|Zhejiang Gongshang Univ Sch Environm Sci & Engn Hangzhou 310012 Peoples R China|Chinese Acad Sci Res Ctr Ecoenvironm Sci Key Lab Environm Biotechnol Beijing 100085 Peoples R China|Zhejiang Gongshang Univ Sch Stat & Math Hangzhou 310018 Peoples R China;

    Harbin Inst Technol Shenzhen Sch Civil & Environm Engn Shenzhen 518055 Peoples R China;

    Harbin Inst Technol Shenzhen Sch Civil & Environm Engn Shenzhen 518055 Peoples R China|Chinese Acad Sci Res Ctr Ecoenvironm Sci Key Lab Environm Biotechnol Beijing 100085 Peoples R China;

    Harbin Inst Technol Shenzhen Sch Civil & Environm Engn Shenzhen 518055 Peoples R China;

    Chinese Acad Sci Res Ctr Ecoenvironm Sci Key Lab Environm Biotechnol Beijing 100085 Peoples R China;

    Lanzhou Univ Sch Life Sci Minist Educ Key Lab Cell Act & Stress Adaptat Lanzhou 730000 Peoples R China;

    Harbin Inst Technol Shenzhen Sch Civil & Environm Engn Shenzhen 518055 Peoples R China;

    Chinese Acad Sci Res Ctr Ecoenvironm Sci Key Lab Environm Biotechnol Beijing 100085 Peoples R China;

    Chinese Acad Sci State Key Lab Microbial Resources & Environm Micr Inst Microbiol Res Ctr Beijing 100101 Peoples R China;

    Harbin Inst Technol Shenzhen Sch Civil & Environm Engn Shenzhen 518055 Peoples R China|Chinese Acad Sci Res Ctr Ecoenvironm Sci Key Lab Environm Biotechnol Beijing 100085 Peoples R China;

    Harbin Inst Technol Shenzhen Sch Civil & Environm Engn Shenzhen 518055 Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Preferential UV photolysis; Antibiotic resistance genes; Horizontal gene transfer; Microbial community; Biological treatment processes;

    机译：优先紫外线光解;抗生素抗性基因;水平基因转移;微生物群落;生物处理过程;

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