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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 955-959Nickel Oxide Nanoparticles Induce Oxidative Stress...

Nickel Oxide Nanoparticles Induce Oxidative Stress and Morphological Changes on Marine Chlorella vulgaris

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Abstract:

The status of oxidative stress of marine Chlorella vulgaris was investigated via measuring the content of H₂O₂, MDA, SOD and CAT in cells after 72h NiO nanoparticles (nNiO) exposure. Morphological changes of algal cells were also determined by transmission electron microscopy (TEM). The results showed that nNiO induced the ROS generation and stimulated the antioxidant defense system of algae. Significant increases (p < 0.01) in MDA level and SOD activity were found after 72h 10 mg L^-1 nNiO treatment. H₂O₂ content and CAT activity also increased under higher concentration treatments although non-significant. The disruption of plasma membrane and the disordered thylakoid lamella of algal cells were found under nNiO exposure, which indicated cell morphological changes. Our results implied that oxidative damage was one of toxic causes of nanoparticles on algae. It also indicates the potential impacts on aquatic biota by nanomaterials.

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Advances in Environmental Technologies III

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Periodical:

Advanced Materials Research (Volumes 955-959)

Pages:

956-960

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.955-959.956

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Online since:

June 2014

Authors:

Ning Gong, Kui Shuang Shao, Guang Yao Li, Ye Qing Sun*

Keywords:

Chlorella vulgaris, Morphological Changes, Nio Nanoparticles, Oxidative Stress

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© 2014 Trans Tech Publications Ltd. All Rights Reserved

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