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Silver nanoparticle toxicity effect on growth and cellular viability of the aquatic plant Lemna gibba

Environmental toxicology and chemistry, 2013-04, Vol.32 (4), p.902-907 [Peer Reviewed Journal]

Copyright © 2013 SETAC ;2014 INIST-CNRS ;Copyright © 2013 SETAC. ;Copyright Blackwell Publishing Ltd. Apr 2013 ;ISSN: 0730-7268 ;EISSN: 1552-8618 ;DOI: 10.1002/etc.2131 ;PMID: 23341248 ;CODEN: ETOCDK

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Title:
Silver nanoparticle toxicity effect on growth and cellular viability of the aquatic plant Lemna gibba
Author: Oukarroum, Abdallah ; Barhoumi, Lotfi ; Pirastru, Laura ; Dewez, David
Subjects: Animal, plant and microbial ecology ; Applied ecology ; Aquatic ecology ; Aquatic plant ; Araceae - drug effects ; Araceae - physiology ; Biological and medical sciences ; Cell Survival - drug effects ; Cells ; Cellular viability ; Ecotoxicology, biological effects of pollution ; Effects ; Flowers & plants ; Fundamental and applied biological sciences. Psychology ; General aspects ; Lemna gibba ; Metal Nanoparticles - toxicity ; Molecules ; Nanoparticles ; Oxidative Stress ; Plant growth ; Reactive oxygen species ; Reactive Oxygen Species - metabolism ; Silver ; Silver - toxicity ; Silver nanoparticles ; Water Pollutants, Chemical - toxicity
Is Part Of: Environmental toxicology and chemistry, 2013-04, Vol.32 (4), p.902-907
Description: The toxicity effect of silver nanoparticles (AgNPs) on growth and cellular viability was investigated on the aquatic plant Lemna gibba exposed over 7 d to 0, 0.01, 0.1, 1, and 10 mg/L of AgNPs. Growth inhibition was demonstrated by a significant decrease of frond numbers dependent on AgNP concentration. Under these conditions, reduction in plant cellular viability was detected for 0.1, 1, and 10 mg/L of AgNPs within 7 d of AgNPs treatment. This effect was highly correlated with the production of intracellular reactive oxygen species (ROS). A significant increase of intracellular ROS formation was triggered by 1 and 10 mg/L of AgNP exposure. The induced oxidative stress was related to Ag accumulation within L. gibba plant cells and with the increasing concentration of AgNP exposure in the medium. The authors' results clearly suggested that AgNP suspension represented a potential source of toxicity for L. gibba plant cells. Due to the low release capacity of free soluble Ag from AgNP dissolution in the medium, it is most likely that the intracellular uptake of Ag was directly from AgNPs, triggering cellular oxidative stress that may be due to the release of free Ag inside plant cells. Therefore, the present study demonstrated that AgNP accumulation in an aquatic environment may represent a potential source of toxicity and a risk for the viability of duckweeds. Environ. Toxicol. Chem. 2013;32:902–907. © 2013 SETAC
Publisher: Hoboken, USA: John Wiley & Sons, Inc
Language: English
Identifier: ISSN: 0730-7268
EISSN: 1552-8618
DOI: 10.1002/etc.2131
PMID: 23341248
CODEN: ETOCDK
Source: MEDLINE
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Silver nanoparticle toxicity effect on growth and cellular viability of the aquatic plant Lemna gibba

Copyright © 2013 SETAC ;2014 INIST-CNRS ;Copyright © 2013 SETAC. ;Copyright Blackwell Publishing Ltd. Apr 2013 ;ISSN: 0730-7268 ;EISSN: 1552-8618 ;DOI: 10.1002/etc.2131 ;PMID: 23341248 ;CODEN: ETOCDK

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