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Florfenicol restructured the microbial interaction network for wastewater treatment by microbial electrolysis cells.
Environmental Research ( IF 8.3 ) Pub Date : 2020-01-18 , DOI: 10.1016/j.envres.2020.109145
Zhaojing Zhang 1 , Yuanyuan Qu 2 , Shuzhen Li 3 , Kai Feng 4 , Weiwei Cai 5 , Huaqun Yin 6 , Shang Wang 4 , Wenzong Liu 4 , Aijie Wang 4 , Ye Deng 7
Affiliation  

To investigate the influence of antibiotics on microbial interactions in a biofilm community, we set up eight replicate reactors of microbial electrolysis cell (MEC) and applied a broad-spectrum antibiotic florfenical (FLO) as an environmental disturbance. According to the results, exposure to FLO resulted in degradation of reactor performance. The MEC could also rebound back to the comparably stable state at a certain time which exhibited a great resilience ability in response to antibiotic disturbance. The FLO perturbation showed a significant influence on the electroactive biofilms (EABs) with a distinct reformation of the community structure. Network analysis revealed that microbial interactions in the biofilms after full recovery became much closer, with a rapid increase in the positive interactions between the predominant genus Geobacter and other microorganisms as compared to the stage before FLO disturbance. Moreover, the keystone species in the networks after full recovery possessed more connections between Geobacter and potential synergistic species. Our results demonstrated that FLO, with broad-spectrum antibacterial ability, could restructure the EABs with more positive interactions for hydrogen production. This study demonstrated the response mechanisms of the MECs to the antibiotic disturbance, providing a scientific reference for the rapid development of this biotechnology to treat wastewater containing antibiotics.

中文翻译:

氟苯尼考重组了微生物相互作用网络,以利用微生物电解池处理废水。

为了研究抗生素对生物膜群落中微生物相互作用的影响,我们建立了八个微生物电解池(MEC)复制反应器,并应用了广谱抗生素florfenical(FLO)作为环境干扰。根据结果​​,暴露于FLO导致反应堆性能下降。MEC还可以在一定时间回弹到相对稳定的状态,表现出对抗生素干扰的强大恢复能力。FLO扰动显示出对电活性生物膜(EAB)的显着影响,并显着地改变了群落结构。网络分析表明,完全恢复后生物膜中的微生物相互作用变得更加紧密,与FLO干扰之前的阶段相比,主要的Geobacter菌与其他微生物之间的正相互作用迅速增加。此外,完全恢复后的网络中的关键物种在地细菌和潜在的协同物种之间具有更多的联系。我们的结果表明,具有广谱抗菌能力的FLO可以重组EAB,从而产生更多的正相互作用来产生氢。该研究证明了MEC对抗生素干扰的反应机制,为该生物技术的快速发展提供了科学的参考,以处理含抗生素的废水。完全恢复后,网络中的关键物种在地细菌和潜在的协同物种之间具有更多的联系。我们的结果表明,具有广谱抗菌能力的FLO可以重组EAB,使其具有更积极的相互作用来产生氢。该研究证明了MEC对抗生素干扰的反应机制,为该生物技术的快速发展提供了科学的参考,以处理含抗生素的废水。完全恢复后,网络中的关键物种在地细菌和潜在的协同物种之间具有更多的联系。我们的结果表明,具有广谱抗菌能力的FLO可以重组EAB,使其具有更积极的相互作用来产生氢。该研究证明了MEC对抗生素干扰的反应机制,为该生物技术的快速发展提供了科学的参考,以处理含抗生素的废水。
更新日期:2020-01-21
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