相关实验视频

Updated: Jan 8, 2026

Protocol for Microplastics Sampling on the Sea Surface and Sample Analysis

Protocol for Microplastics Sampling on the Sea Surface and Sample Analysis

Published on: December 16, 2016

微塑料在压力条件下的河口微藻中对细胞外聚合物 (EPS) 的有毒影响

Jianhuang Su¹, Jiabao Zhu¹, Dinglin Hou¹

¹Department of Environmental Science and Engineering, College of Chemical Engineering, Huaqiao University, Xiamen, Fujian, 361021, China.

Environmental pollution (Barking, Essex : 1987)

|December 20, 2025

概括

细胞外聚合物物质 (EPS) 帮助像Scenedesmus obliquus和Skeletonema costatum这样的微藻通过稳定细胞循环和光合作用来应对微塑料 (MP) 污染.

科学领域:

环境科学环境科学
海洋生物学海洋生物学
生态毒理学生态毒理学

背景情况:

在河口积累的微塑料 (MP) 对水生生物构成风险.
微藻对MPs的反应中细胞外聚合物质 (EPS) 的作用尚不清楚.

研究的目的:

研究EPS在两种微藻物种Scenedesmus obliquus (绿藻) 和Skeletonema costatum (二藻) 对聚烯 (PP) 和聚乙烯 (PE) 微塑料的反应中的作用.
阐明在MP压力下EPS的产生和组成如何变化,并影响微藻生理学和细胞周期进展.

主要方法:

对S. obliquus和S. costatum暴露在PP和PEMP的不同度下.
分析微藻生物质,光合作用效率,抗氧化酶活性和细胞周期分布.
使用3D-EEM光等技术对EPS成分 (蛋白质,多糖) 和结构进行表征.
使用和不使用EPS去除的微藻反应的比较.

主要成果:

S. obliquus生物量减少,而S. costatum则表现出混合反应 (低MP度的抑制,高度的增长).
移除EPS显著降低了微藻的应激耐受性,影响每种物种不同的抗氧化反应和细胞循环调节.
压力导致EPS成分的变化,包括蛋白质和多糖含量的变化和结构修改.
发现EPS可以稳定细胞循环,调节抗氧化剂反应,并在MP压力下维持微藻的光合作用.

结论:

在减轻微藻中的微塑性压力方面,EPS起着至关重要的作用.
微藻种类对MPs表现出不同的反应,受其EPS生产和组成的影响.
了解EPS和MP之间的相互作用对于评估河口环境中微塑料污染的生态风险至关重要.

关键词:

河口中的微藻类细胞外聚合物质是细胞外的聚合物质.微塑料是一种微塑料.毒性影响有毒影响

更多相关视频

Quantification of Heavy Metals and Other Inorganic Contaminants on the Productivity of Microalgae

Quantification of Heavy Metals and Other Inorganic Contaminants on the Productivity of Microalgae

Published on: July 10, 2015

Sampling, Sorting, and Characterizing Microplastics in Aquatic Environments with High Suspended Sediment Loads and Large Floating Debris

Sampling, Sorting, and Characterizing Microplastics in Aquatic Environments with High Suspended Sediment Loads and Large Floating Debris

Published on: July 28, 2018

相关概念视频

Red Algae

Red Algae

Red algae, also known as rhodophytes, are primarily found in marine environments, though some species inhabit freshwater and terrestrial ecosystems. These organisms exist in both unicellular and multicellular forms, with some multicellular varieties reaching macroscopic sizes.As phototrophic organisms, red algae contain chlorophyll a; however, their chloroplasts lack chlorophyll b. Instead, they possess phycobiliproteins, which serve as major light-harvesting pigments, similar to those found in...