氧化碳烯-聚烯微塑料的共污染系统与Chlorella sp.之间的相互作用 FACHB-9:有毒作用和生物降解
Hao Zhang1, Baoming Liu1, Fengjie Sun2
1School of Pharmacy, Binzhou Medical University, Yantai, 264003, China.
Journal of environmental management
|February 6, 2025
概括
微塑料和氧化碳胺 (OXC) 的共同污染会损害微藻,减少细胞密度和光合作用. 然而,微藻可以生物降解OXC,显示出水生生物修复的潜力.
科学领域:
- 环境科学 环境科学
- 水生毒理学 水生毒理学
- 生物修复是一种生物修复.
背景情况:
- 水生生态系统中微塑料 (MP) 和制药污染物的共同污染越来越令人担忧.
- 关于这些污染物对水生生物的联合毒性,目前的研究有限.
- 氧化碳bazepine (OXC) 是一个常见的制药污染物,聚烯微塑料 (PP-MPs) 是普遍的MP.
研究的目的:
- 研究OXC和PP-MPs在微藻Chlorella sp.上的关节毒性. 这就是FACHB-9.
- 评估共同污染对微藻生长,氧化应激和光合作用效率的影响.
- 评估由Chlorella sp.产生的OXC生物降解情况. 在PP-MPs的存在下FACHB-9.
主要方法:
- 暴露于Chlorella sp. 的情况 从FACHB-9到单个OXC,单个PP-MP,以及组合的OXC/PP-MP.
- 测量微藻细胞密度,氧化应激标志物和光合作用效率.
- 转录组分析以确定受影响的生物途径.
- 微藻菌株对OXC生物降解的量化.
主要成果:
- 与单次OXC暴露相比,同时暴露于OXC和PP-MPs显著降低了微藻细胞密度38.93%,与单次OXC暴露相比.
- 在共同污染下的微藻中观察到增强的氧化应激和减少的光合作用效率.
- 转录组分析揭示了光合作用和TCA循环途径的抑制,与DNA损伤修复途径的上调调节.
- 克洛雷拉 sp. 克洛雷拉 sp. 在FACHB-9中,OXC的生物降解率很高 (91.61%单一,86.27%混合).
结论:
- OXC和PP-MP的联合毒性对微藻构成重大威胁,影响其生理功能.
- 微藻,特别是Chlorella sp. 的微藻. FACHB-9具有显著的OXC生物降解能力,即使存在微塑料.
- 这些发现凸显了微藻在用药品和微塑料污染的水生环境的生物修复方面的潜力.
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