水生景观植物对去除水培溶液中兽用抗生素的影响和机制。

IF 3.4 4区 环境科学与生态学 Q2 ENVIRONMENTAL SCIENCES
Xiao-Ming Lu, Yi-Xi Liu
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引用次数: 0

摘要

选择四种水生景观植物和三种兽用抗生素构建水培试验系统,分析抗生素的耐受性、去除效果和机理。结果表明,0 至 100 μg-L-1 的抗生素浓度可促进植株高度和叶片叶绿素含量,而浓度大于 100 μg-L-1 的抗生素则具有抑制作用。不同植物去除抗生素的能力依次为石菖蒲 > Ceratophyllum demersum L. > Thalia dealbata Fraser > Nuphar pumila (Timm) DC。使用 100 μg-L-1 抗生素水培 12 d 后,去除诺氟沙星、磺胺二甲氧嘧啶和金霉素效果最好的植物是 Ceratophyllum demersum L.、Acorus calamus L.和 Acorus calamus L.,去除率分别为 66.6%、63.0% 和 63.2%。抗生素在不同植物组织中的累积量依次为根>茎>叶,累积量随培养时间的延长而增加。植物根部生物膜微生物的多样性随着抗生素处理浓度的增加而减少,而优势菌属(气单胞菌属、芽孢杆菌属、赖氨巴氏杆菌属、普罗维登菌属和葡萄球菌属)的丰度呈上升趋势。研究结果表明,植物对抗生素的吸收和根圈微生物群落的动态共同促进了抗生素的清除。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Effects and mechanisms of aquatic landscape plants on the removal of veterinary antibiotics from hydroponic solutions.

Four aquatic landscape plants and three veterinary antibiotics were selected to construct a hydroponic test system to analyze the tolerance, removal effect and mechanism of antibiotics. The results indicated that antibiotic concentrations from 0 to 100 μg·L-1 promoted plant heights and leaf chlorophyll contents, while antibiotics at concentrations > 100 μg·L-1 had inhibitory effects. The ability of different plants to remove antibiotics was Acorus calamus L. > Ceratophyllum demersum L. > Thalia dealbata Fraser > Nuphar pumila (Timm) DC. The plants with the best removal of norfloxacin, sulfadimethoxine and chlortetracycline were Ceratophyllum demersum L., Acorus calamus L. and Acorus calamus L. after 12 d of hydroponic cultivation using 100 μg·L-1 antibiotics, with removal rates of 66.6%, 63.0% and 63.2%, respectively. The accumulation of antibiotics in different plant tissues was root > stem > leaf and the accumulation increased with incubation time. The diversity of plant root biofilm microorganisms decreased with increasing treatment concentrations of antibiotics, while the abundance of dominant genera (Aeromonas, Bacillus, Lysinibacillus, Providencia, and Staphylococcus) showed an increasing trend. The findings imply that the antibiotic uptake by plants and the dynamics of the rhizosphere microbial community combine to promote antibiotic removal.

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来源期刊
International Journal of Phytoremediation
International Journal of Phytoremediation 环境科学-环境科学
CiteScore
7.60
自引率
5.40%
发文量
145
审稿时长
3.4 months
期刊介绍: The International Journal of Phytoremediation (IJP) is the first journal devoted to the publication of laboratory and field research describing the use of plant systems to solve environmental problems by enabling the remediation of soil, water, and air quality and by restoring ecosystem services in managed landscapes. Traditional phytoremediation has largely focused on soil and groundwater clean-up of hazardous contaminants. Phytotechnology expands this umbrella to include many of the natural resource management challenges we face in cities, on farms, and other landscapes more integrated with daily public activities. Wetlands that treat wastewater, rain gardens that treat stormwater, poplar tree plantings that contain pollutants, urban tree canopies that treat air pollution, and specialized plants that treat decommissioned mine sites are just a few examples of phytotechnologies.
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