Tags

Type your tag names separated by a space and hit enter

Do environmental concentrations of zinc oxide nanoparticle pose ecotoxicological risk to aquatic fungi associated with leaf litter decomposition?
Water Res. 2020 Jul 01; 178:115840.WR

Abstract

Ecotoxicological risk of ZnO nanoparticles at environmental levels is a key knowledge gap for predicting how freshwater ecosystems will respond to nanoparticle pollution. A microcosm experiment was conducted to explore the chronic effects of ZnO nanoparticle at environmental concentrations (30, 300, 3000 ng L-1) on aquatic fungi associated with the decomposing process of poplar leaf litter (45 days). ZnO nanoparticles led to 9-33% increases in fungal biomass after acute exposure (5 days), but 33-50% decreases after chronic exposure (45 days), indicating that the hormetic effect of ZnO nanoparticles at the environmental level may occur during acute exposure. Besides, ZnO nanoparticles had negative effects on microbial enzyme activity, especially on day 10, when the activities of N-acetylglucosaminidase, glycine-aminopeptidase, aryl-sulfatase, polyphenol oxidase, and peroxidase were significantly inhibited. After chronic exposure, the fungal community structure was significantly impacted by ZnO nanoparticles at 300 ng L-1 due to the reduced proportion of Anguillospora, which eventually caused a significant decrease in litter decomposition rate. Therefore, ZnO nanoparticles may pose ecotoxicological effects on aquatic fungi even at a very low concentration and eventually negatively affect freshwater functioning.

Authors+Show Affiliations

School of Materials and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou, China; Key Laboratory of Pollution Treatment and Resource, National Light Industry, Zhengzhou, China; Collaborative Innovation Center of Environmental Pollution Control and Ecological Restoration, Henan Province, Zhengzhou, China. Electronic address: Dujj@zzuli.edu.cn.School of Materials and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou, China.School of Materials and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou, China.School of Materials and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou, China.School of Materials and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou, China.School of Materials and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou, China.School of Materials and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou, China.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

32339863

Citation

Du, Jingjing, et al. "Do Environmental Concentrations of Zinc Oxide Nanoparticle Pose Ecotoxicological Risk to Aquatic Fungi Associated With Leaf Litter Decomposition?" Water Research, vol. 178, 2020, p. 115840.
Du J, Zhang Y, Yin Y, et al. Do environmental concentrations of zinc oxide nanoparticle pose ecotoxicological risk to aquatic fungi associated with leaf litter decomposition? Water Res. 2020;178:115840.
Du, J., Zhang, Y., Yin, Y., Zhang, J., Ma, H., Li, K., & Wan, N. (2020). Do environmental concentrations of zinc oxide nanoparticle pose ecotoxicological risk to aquatic fungi associated with leaf litter decomposition? Water Research, 178, 115840. https://doi.org/10.1016/j.watres.2020.115840
Du J, et al. Do Environmental Concentrations of Zinc Oxide Nanoparticle Pose Ecotoxicological Risk to Aquatic Fungi Associated With Leaf Litter Decomposition. Water Res. 2020 Jul 1;178:115840. PubMed PMID: 32339863.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Do environmental concentrations of zinc oxide nanoparticle pose ecotoxicological risk to aquatic fungi associated with leaf litter decomposition? AU - Du,Jingjing, AU - Zhang,Yuyan, AU - Yin,Yuting, AU - Zhang,Jin, AU - Ma,Hang, AU - Li,Ke, AU - Wan,Ning, Y1 - 2020/04/21/ PY - 2019/10/07/received PY - 2020/03/20/revised PY - 2020/04/14/accepted PY - 2020/4/28/pubmed PY - 2020/5/26/medline PY - 2020/4/28/entrez KW - Environmental concentration KW - Enzyme activity KW - Fungal biomass KW - Fungal community structure KW - ZnO nanoparticles SP - 115840 EP - 115840 JF - Water research JO - Water Res. VL - 178 N2 - Ecotoxicological risk of ZnO nanoparticles at environmental levels is a key knowledge gap for predicting how freshwater ecosystems will respond to nanoparticle pollution. A microcosm experiment was conducted to explore the chronic effects of ZnO nanoparticle at environmental concentrations (30, 300, 3000 ng L-1) on aquatic fungi associated with the decomposing process of poplar leaf litter (45 days). ZnO nanoparticles led to 9-33% increases in fungal biomass after acute exposure (5 days), but 33-50% decreases after chronic exposure (45 days), indicating that the hormetic effect of ZnO nanoparticles at the environmental level may occur during acute exposure. Besides, ZnO nanoparticles had negative effects on microbial enzyme activity, especially on day 10, when the activities of N-acetylglucosaminidase, glycine-aminopeptidase, aryl-sulfatase, polyphenol oxidase, and peroxidase were significantly inhibited. After chronic exposure, the fungal community structure was significantly impacted by ZnO nanoparticles at 300 ng L-1 due to the reduced proportion of Anguillospora, which eventually caused a significant decrease in litter decomposition rate. Therefore, ZnO nanoparticles may pose ecotoxicological effects on aquatic fungi even at a very low concentration and eventually negatively affect freshwater functioning. SN - 1879-2448 UR - https://www.unboundmedicine.com/medline/citation/32339863/Do_environmental_concentrations_of_zinc_oxide_nanoparticle_pose_ecotoxicological_risk_to_aquatic_fungi_associated_with_leaf_litter_decomposition L2 - https://linkinghub.elsevier.com/retrieve/pii/S0043-1354(20)30377-8 DB - PRIME DP - Unbound Medicine ER -
Try the Free App:
Prime PubMed app for iOS iPhone iPad
Prime PubMed app for Android
Prime PubMed is provided
free to individuals by:
Unbound Medicine.