在与混合抗生素废水源相邻的溪流中微生物群落的差异
Jin-Wook Kim1, Young-Kyu Hong1, Oh-Kyung Kwon2
1Department of Bio-Environmental Chemistry, Chungnam National University, Daejeon 34134, Republic of Korea.
Toxics
|February 23, 2024
概括
来自各种来源的抗生素污染会改变流中的细菌群落. 牲畜来源显著影响细菌组成,将特定的肠道细菌引入水生生态系统.
科学领域:
- 环境科学 环境科学
- 微生物学 微生物学
- 生态毒理学 生态毒理学
背景情况:
- 抗生素释放到水生环境中可以破坏微生物生态系统.
- 了解抗生素来源和细菌社区转移之间的联系对于环境管理至关重要.
研究的目的:
- 调查流中的抗生素残留物的来源和分布.
- 分析抗生素污染对细菌社区结构的影响.
- 识别与不同抗生素释放源相关的特定细菌种群.
主要方法:
- 使用液体染色学-并联质谱法 (LC-MS/MS) 量化抗生素残留物.
- 通过Illumina MiSeq平台对细菌16S rRNA基因进行测序,以确定社区结构.
- 对五个流域的细菌群落进行比较分析,这些流域具有多种污染源.
主要成果:
- 抗生素的存在和分布与释放来源有很强的相关性.
- 蛋白质细菌和坚固菌是占主导地位的细菌类;坚固菌的丰富性在牲畜来源附近增加.
- 牲畜相关的细菌,包括*Clostridium saudiense*,*Proteiniclasticum ruminis*和*Turicibacter sanguinis*,在受污染的沉积物中普遍存在.
结论:
- 抗生素污染显著改变了河流细菌群落.
- 畜牧设施是影响水生微生物生态系统的抗生素污染的重要来源.
- 这项研究证实了抗生素残留物与流中的细菌组成变化之间的直接关系.
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