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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Sayeed, Iqbal Anjum, Naser A. Singh, Manoj K. Ahmad, Iqbal Singh, Neetu Pereira, Eduarda Duarte, Armando C. |
| Description | Country affiliation: Portugal Author Affiliation: Anjum NA ( Department of Chemistry and Centre for Environmental & Marine Studies (CESAM), University of Aveiro, 3810-193 Aveiro, Portugal.); Singh N ( Department of Mechanical Engineering and Centre for Mechanical Technology & Automation (TEMA), University of Aveiro, Aveiro 3810-193, Portugal.); Singh MK ( Department of Mechanical Engineering and Centre for Mechanical Technology & Automation (TEMA), University of Aveiro, Aveiro 3810-193, Portugal.); Sayeed I ( Department of Emergency Medicine, Brain Research Laboratory, 1365B Clifton Road NE, Suite 5100, Emory University, Atlanta, GA 30322, USA.); Duarte AC ( Department of Chemistry and Centre for Environmental & Marine Studies (CESAM), University of Aveiro, 3810-193 Aveiro, Portugal.); Pereira E ( Department of Chemistry and Centre for Environmental & Marine Studies (CESAM), University of Aveiro, 3810-193 Aveiro, Portugal.); Ahmad I ( Department of Chemistry and Centre for Environmental & Marine Studies (CESAM), University of Aveiro, 3810-193 Aveiro, Portugal) |
| Abstract | This study investigates the impact of different single-bilayer graphene oxide sheet (hereafter 'graphene oxide', GO; size: 0.5-5 µm) concentrations (0, 100, 200, 400, 800 and 1,600 mg L(-1)) and underlying potential mechanisms in germinating faba bean (Vicia faba L.) seedlings. The study revealed both positive and negative concentration-dependent GO-effects on V. faba. Significant negative impacts of GO concentrations (ordered by magnitude of effect: 1600>200>100 mg GO L(-1)) were indicated by decreases in growth parameters and the activity of H2O2-decomposing enzymes (ascorbate peroxidase, APX; catalase, CAT), and by increases in the levels of electrolyte leakage (EL), H2O2, and lipid and protein oxidation. The positive impacts of 400 and 800 mg GO L(-1) included significant improvements in V. faba health status indicated by decreased levels of EL, H2O2, and lipid and protein oxidation, and by enhanced H2O2-decomposing APX and CAT activity, and increased proline and seed-relative water content. V. faba seedlings-polypeptide patterns strongly substantiated these GO-concentration effects. Overall, the positive effects of these two GO concentrations (800>400 mg L(-1)) on V. faba seedlings indicate their safe nature and allow to suggest further studies. |
| ISSN | 00489697 |
| Volume Number | 472 |
| e-ISSN | 18791026 |
| Journal | Science of The Total Environment |
| Language | English |
| Publisher | Elsevier |
| Publisher Date | 2014-02-15 |
| Publisher Place | Netherlands |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Germination Drug Effects Graphite Toxicity Soil Pollutants Vicia Faba Catalase Metabolism Hydrogen Peroxide Oxidation-reduction Seedling Physiology Journal Article Research Support, Non-u.s. Gov't Discipline Environmental Science |
| Content Type | Text |
| Resource Type | Article |
| Subject | Environmental Chemistry Waste Management and Disposal Pollution Environmental Engineering |
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