Inhibitory effects of silver nanoparticles in two green algae, Chlorella vulgaris and Dunaliella tertiolecta

被引：279

作者：

Oukarroum, Abdallah ^{[1
]}

Bras, Sebastien ^{[1
,2
]}

Perreault, Francois ^{[1
]}

Popovic, Radovan ^{[1
]}

机构：

[1] Univ Quebec, Dept Chem, Montreal, PQ H3C 3P8, Canada

[2] Univ Poitiers, Fac Sci, Dept Chem, F-86022 Poitiers, France

来源：

ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY | 2012年 / 78卷

基金：

加拿大自然科学与工程研究理事会;

关键词：

Silver nanoparticles; Chlorella vulgaris; Dunaliella tertiolecta; Reactive oxygen species; Lipids peroxidation; PSEUDOKIRCHNERIELLA-SUBCAPITATA; OXIDATIVE STRESS; IN-VITRO; TOXICITY; BIOAVAILABILITY; NANOMATERIALS; GENERATION; GROWTH;

D O I：

10.1016/j.ecoenv.2011.11.012

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Freshwater microalga Chlorella vulgaris and marine microalga Dunaliella tertiolecta were used to investigate toxic effects induced by 50 nm silver nanoparticles (AgNPs). To induce AgNPs effect, we exposed Chlorella vulgaris and Dunaliella tertiolecta for 24 h to 0-10 mg/L. We showed that growth media had different effects in AgNPs agglomerates' formation. Cellular viability, reactive oxygen species (ROS) formation and lipids peroxidation were employed to assess the toxic effects of AgNPs. AgNPs were able to interact directly with the Chlorella vulgaris cells surface and large aggregates were observed. AgNPs have a negative effect on Chlorella vulgaris and Dunaliella tertiolecta, as manifested by a strong decrease in chlorophyll content, viable algal cells, increased ROS formation and lipids peroxidation. The variability in sensitivity of both algae towards AgNPs was observed. We conclude that AgNPs have a negative effect on aquatic algae and these alterations might have serious consequences on structure and function of aquatic plant communities. (C) 2011 Elsevier Inc. All rights reserved.

引用

页码：80 / 85

页数：6

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