抗生素是否会影响缩湖中的甲产量? 在中国的太湖和湖进行了一项比较研究
Meng Yu1, Guangxuan Yin1, Cheng Duan1
1Department of Environmental Science, China Pharmaceutical University, #639 Longmian Avenue, Jiangning District, Nanjing 211198, PR China.
Journal of hazardous materials
|November 9, 2025
概括
环死湖中的抗生素对甲产量产生不同的影响,这取决于药物类型和湖泊特征. 一些抗生素会增加太湖的甲,而另一些抗生素会减少湖的甲.
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:
- 欧湖积累了制药污染物,特别是抗生素.
- 这些湖泊是甲 (CH4) 的重要来源,甲是一种强大的温室气体.
- 了解抗生素对甲循环的影响对于评估制药污染影响至关重要.
研究的目的:
- 为了研究常见抗生素对有机湖泊沉积物中甲产生的影响.
- 探索抗生素特性和湖泊沉积物特征对这些影响的影响.
- 提供关于抗生素制药对甲产生和全球变暖的机制的见解.
主要方法:
- 水沉积系统是使用来自两座环氧化的湖泊 (太湖和湖) 的沉积物构建的.
- 在受控条件下进行了120天的栽培实验.
- 分析了抗生素的分布,甲的积累和甲原始社区.
主要成果:
- 水和沉积物之间的抗生素分布取决于药物的特性.
- 甲积累在太湖沉积物中更高,可能是由于有机物质的增加.
- 环素和硫甲在太湖增加了甲,而在湖,环素,硫甲和trimethoprim抑制了甲的产生.
- 甲原体古生物,主要是甲菌,表现出多样化的丰度变化.
结论:
- 抗生素对缩湖中的甲产量产生不同的影响,受药物特性和环境因素的影响.
- 这些发现突出了制药污染,微生物群落和温室气体排放之间的复杂相互作用.
- 这项研究为了解水生生态系统中抗生素污染的生态后果提供了基础.
相关概念视频
Metabolism of Chemolithotrophs
741
Chemolithotrophs are microorganisms that obtain energy by oxidizing inorganic molecules such as hydrogen gas (H₂), ammonia (NH₃), reduced sulfur compounds (H₂S, S²⁻), and ferrous iron (Fe²⁺). Unlike heterotrophic organisms that rely on organic carbon, chemolithotrophs transfer electrons from these inorganic donors to the electron transport chain (ETC), generating a proton motive force (PMF) that drives ATP synthesis through oxidative phosphorylation.
741
Stringent Response in E. coli
277
Bacterial growth is closely tied to nutrient availability, with cells proliferating exponentially under favorable conditions and entering a stationary phase when resources become scarce. This transition is mediated by a regulatory mechanism known as the stringent response, which allows bacteria to adapt to nutrient deprivation by modulating gene expression and metabolic activity.During nutrient scarcity, intracellular amino acid levels decline. It results in the accumulation of uncharged tRNAs...
277
Overview of Archaea
773
Archaea, named after the Archaean eon, represent a unique domain of life, distinct from bacteria and eukaryotes, with remarkable traits. Their cellular and molecular features, ecological adaptability, and industrial relevance highlight their importance in understanding life processes and leveraging biotechnology.Cellular and Molecular CharacteristicsA defining feature of archaea is their unique membrane composition. Archaeal membranes contain ether-linked isoprenoid lipids, which confer...
773


