宏类抗生素的暴露时间是否会影响河流周边生物的发展? 对结构和功能的洞察力
Ning Ding1, Wenqian Yu1, Jiezhang Mo2
1Xi'an Key Laboratory of Environmental Simulation and Ecological Health in the Yellow River Basin, College of Urban and Environmental Sciences, Northwest University, Xi'an, 710127, China.
Aquatic toxicology (Amsterdam, Netherlands)
|September 1, 2024
概括
周围植物群体可以从类抗生素污染中恢复过来,但它们的光合作用功能可能会永久受损. 这项研究探讨了抗生素对河流周边生物和恢复的影响.
科学领域:
- 环境科学 环境科学
- 生态毒理学 生态毒理学
- 微生物生态学 微生物生态学
背景情况:
- 城市河流污染主要是由污水排放,而宏类抗生素是重要的污染物.
- 周围植物,关键的初级生产者,对于水生生态系统的健康至关重要,但它们对抗生素的反应尚不清楚.
- 了解周边生物中的抗生素暴露和恢复对于评估河流生态系统弹性至关重要.
研究的目的:
- 评估红色素 (ERY) 和红色素 (ROX) 对周围植物结构和功能的影响.
- 为了研究在暴露于宏类抗生素后的周围细胞的恢复过程.
- 确定宏类抗生素对河流中的周边社区的长期影响.
主要方法:
- 周围生物暴露于ERY和ROX在50μg/L的特定时间内.
- 围生社区结构和光合作用能力的评估 (光系统II).
- 在暴露和恢复阶段分析碳代谢和氨基碳利用情况.
主要成果:
- 在14天内,periphyton社区结构在很大程度上恢复,对敏感物种的影响最小.
- 宏类抗生素对光系统II造成显著的光损伤,抑制光合作用能力.
- 在恢复过程中,氨基碳利用量增加,而直接碳代谢没有显著变化.
结论:
- 周围植物群体在定期暴露于宏类抗生素时表现出弹性和自我恢复能力.
- 暴露于宏类抗生素可能会导致周围生物的生态功能永久性干扰.
- 这项研究突出了类抗生素对河流周围微生物群落的复杂影响.
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