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Updated: Jun 11, 2025

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对内源和外源银纳米颗粒对微藻Chlorella vulgaris的影响的评估

Natalí Romero^1,2, Adrianne Brito³, Horacio E Troiani⁴

¹Laboratorio de Ecotoxicología, Facultad de Humanidades y Ciencias, Universidad Nacional del Litoral, Ciudad Universitaria, Paraje El Pozo s/n, Santa Fe, (CP 3000), Argentina.

World journal of microbiology & biotechnology

|October 7, 2024

概括

银纳米粒子 (AgNPs) 通过进入细胞和破坏结构来破坏水生藻类,如Chlorella vulgaris. 这导致透性增加,内部AgNP形成,最终导致细胞死亡,突出显示环境风险.

科学领域:

环境科学环境科学
纳米技术纳米技术
微生物学微生物学

背景情况:

微藻是水生生态系统中至关重要的初级生产者.
银纳米粒子 (AgNPs) 的使用越来越多,引发了人们对其环境影响的担忧.
菌 (Chlorella vulgaris) 是一个全球重要的淡水藻类.

研究的目的:

研究银纳米粒子 (AgNP) 内化对微藻Chlorella vulgaris的影响.
阐明AgNP毒性和C. vulgaris.细胞损伤的机制.

主要方法:

对Chlorella vulgaris暴露于酸盐稳定的AgNP.
使用显微镜 (TEM) 分析AgNP积累和离子溶解.
细胞损伤的评估,包括器官结构,脂质含量和细胞活力.

主要成果:

在细胞壁中积累AgNP,增加透性,并允许AgNP和Ag+离子进入.
细胞内部的Ag+离子被转化为内源性AgNP,加剧了损伤.
TEM揭示了叶绿体的失调,改变了细胞器官的功能,增加了细胞大小,导致细胞死亡.

结论:

在Chlorella vulgaris中,AgNP内部化会导致显著的细胞损伤和死亡.
外部和内部形成的AgNP都会导致毒性,可能是通过活性氧物种.
该研究强调了AgNP对广泛传播的水生藻类构成的生态风险.

关键词:

菌 (Chlorella vulgaris) 是一种常见的植物.细胞死亡细胞死亡微藻类是一种微藻类.纳米粒子聚合的聚合方法氧化应激是一种氧化应激.银纳米粒子的毒性银纳米粒子的毒性超结构性变化超结构性变化

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