功能化纳米塑料是否调节水生真菌对金属的细胞和生理反应?
Juliana Barros1, Santosh Kumar2, Sahadevan Seena1
1Marine and Environmental Sciences Centre (MARE)/Rede de Investigação Aquática (ARNET), Department of Life Sciences, University of Coimbra, Calçada Martim de Freitas, 3000-456 Coimbra, Portugal.
Environmental pollution (Barking, Essex : 1987)
|September 20, 2023
概括
功能化纳米塑料 (NP) 增加了铜吸附,改变了它们对水生真菌的影响. 同时暴露NP和铜会导致细胞损伤,并抑制真菌生长,与仅仅铜不同.
科学领域:
- 环境科学 环境科学
- 生态毒理学 生态毒理学
- 菌类学 菌类学是指菌类学.
背景情况:
- 淡水面临着新出现的纳米塑料 (NP) 和金属的共同污染.
- 水生菌体是主要的初级分解物,但它们对联合压力因素的反应尚不清楚.
研究的目的:
- 研究聚乙烯NP和铜 (Cu) 对水生真菌Articulospora tetracladia的单独和联合作用.
- 确定NP功能化如何影响金属相互作用和随后的真菌毒性.
主要方法:
- 在环境相关度下,A. tetracladia暴露于裸体和碳酸化 (COOH) 的NP和Cu.
- 评估细胞内活性氧物种 (ROS),血膜完整性和真菌生长.
- 谱分析以确认Cu吸附到NP上的情况.
主要成果:
- 碳氧化NP增强了Cu吸附.
- 同时暴露于NP和Cu诱导ROS积累和血破坏.
- COOH NPs与Cu结合,显著抑制了真菌生长,而Cu单独显示了刺激作用.
结论:
- NP功能化可以促进金属吸附,修改金属对水生真菌的毒性.
- 结合NP和金属暴露对水生菌体的风险比单个压力因素更大.
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