NDLI: Assessment of phytotoxicity of ZnO NPs on a medicinal plant, Fagopyrum esculentum.

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Assessment of phytotoxicity of ZnO NPs on a medicinal plant, Fagopyrum esculentum.

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Kim, Sunghyun Lee, Insook Lee, Sooyeon Kim, Saeyeon
Description	Country affiliation: South Korea Author Affiliation: Lee S ( Division of EcoScience, Ewha Womans University, 52 Ewhayeodae-gil, Seodaemun-gu, Seoul 120-750, South Korea.)
Abstract	Fagopyrum esculentum commonly named as buckwheat plant is pseudocereal food crops and healthy herbs but is not known as a bioindicator of environmental condition. In the present study, the effects of ZnO nanoparticles (NPs) and microparticles (MPs) on plant growth, bioaccumulation, and antioxidative enzyme activity in buckwheat were estimated under hydroponic culture. The significant biomass reduction at concentrations of 10-2,000 mg/L was 7.7-26.4 % for the ZnO NP and 11.4-23.5 % for the ZnO MP treatment, (p < 0.05). ZnO NPs were observed in root cells and root cell surface by scanning electron microscopy and transmission electron microscopy analysis. Zn bioaccumulation in plant increased with increasing treatment concentrations. The upward translocation (translocation factor <0.2) of Zn in plant was higher with the ZnO NP treatment than that with the ZnO MP treatment. Additionally, reactive oxygen species generation by ZnO NPs was estimated as the reduced glutathione level and catalase activity, which would be a predictive biomarker of nanotoxicity. The results are the first study to evaluate the phytotoxicity of ZnO NPs to medicinal plant. F. esculentum can be as a good indicator of plant species in NP-polluted environment.
ISSN	09441344
e-ISSN	16147499
DOI	10.1007/s11356-012-1069-8
Journal	Environmental Science and Pollution Research
Issue Number	2
Volume Number	20
Language	English
Publisher	Springer
Publisher Date	2013-02-01
Publisher Place	Germany
Access Restriction	Open
Subject Keyword	Fagopyrum Drug Effects Nanoparticles Toxicity Plants, Medicinal Zinc Oxide Antioxidants Metabolism Biological Markers Biomass Catalase Glutathione Hydroponics Microscopy, Electron, Scanning Microscopy, Electron, Transmission Oxidative Stress Plant Roots Reactive Oxygen Species Pharmacokinetics Research Support, Non-u.s. Gov't Discipline Environmental Science Discipline Environmental Chemistry
Content Type	Text
Resource Type	Article
Subject	Environmental Chemistry Health, Toxicology and Mutagenesis Pollution Medicine

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