Toxicity of Nickel Oxide Nanoparticles on a Freshwater Green Algal Strain of Chlorella vulgaris
Joint Authors
Dewez, David
Oukarroum, Abdallah
Samadani, Mahshid
Zaidi, Wassila
Source
Issue
Vol. 2017, Issue 2017 (31 Dec. 2017), pp.1-8, 8 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2017-04-04
Country of Publication
Egypt
No. of Pages
8
Main Subjects
Abstract EN
A freshwater microalga strain of Chlorella vulgaris was used to investigate toxic effects induced by nickel oxide nanoparticles (NiO-NPs) in suspension.
Algal cells were exposed during 96 h to 0–100 mg L−1 of NiO-NPs and analyzed by flow cytometry.
Physicochemical characterization of nanoparticles in tested media showed a soluble fraction (free Ni2+) of only 6.42% for 100 mg L−1 of NiO-NPs, indicating the low solubility capacity of these NPs.
Toxicity analysis showed cellular alterations which were related to NiO-NPs concentration, such as inhibition in cell division (relative cell size and granularity), deterioration of the photosynthetic apparatus (chlorophyll synthesis and photochemical reactions of photosynthesis), and oxidative stress (ROS production).
The change in cellular viability demonstrated to be a very sensitive biomarker of NiO-NPs toxicity with EC50 of 13.7 mg L−1.
Analysis by TEM and X-ray confirmed that NiO-NPs were able to cross biological membranes and to accumulate inside algal cells.
Therefore, this study provides a characterization of both physicochemical and toxicological properties of NiO-NPs suspensions in tested media.
The use of the freshwater strain of C.
vulgaris demonstrated to be a sensitive bioindicator of NiO-NPs toxicity on the viability of green algae.
American Psychological Association (APA)
Oukarroum, Abdallah& Zaidi, Wassila& Samadani, Mahshid& Dewez, David. 2017. Toxicity of Nickel Oxide Nanoparticles on a Freshwater Green Algal Strain of Chlorella vulgaris. BioMed Research International،Vol. 2017, no. 2017, pp.1-8.
https://search.emarefa.net/detail/BIM-1139578
Modern Language Association (MLA)
Oukarroum, Abdallah…[et al.]. Toxicity of Nickel Oxide Nanoparticles on a Freshwater Green Algal Strain of Chlorella vulgaris. BioMed Research International No. 2017 (2017), pp.1-8.
https://search.emarefa.net/detail/BIM-1139578
American Medical Association (AMA)
Oukarroum, Abdallah& Zaidi, Wassila& Samadani, Mahshid& Dewez, David. Toxicity of Nickel Oxide Nanoparticles on a Freshwater Green Algal Strain of Chlorella vulgaris. BioMed Research International. 2017. Vol. 2017, no. 2017, pp.1-8.
https://search.emarefa.net/detail/BIM-1139578
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1139578