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http://hdl.handle.net/10773/18745
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DC Field | Value | Language |
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dc.contributor.author | Anjum, Naser A. | pt |
dc.contributor.author | Singh, Neetu | pt |
dc.contributor.author | Singh, Manoj K. | pt |
dc.contributor.author | Sayeed, Iqbal | pt |
dc.contributor.author | Duarte, Armando C. | pt |
dc.contributor.author | Pereira, Eduarda | pt |
dc.contributor.author | Ahmad, Iqbal | pt |
dc.date.accessioned | 2017-11-08T11:20:52Z | - |
dc.date.issued | 2014 | - |
dc.identifier.issn | 0048-9697 | pt |
dc.identifier.uri | http://hdl.handle.net/10773/18745 | - |
dc.description.abstract | This study investigates the impact of different single-bilayer graphene oxide sheet (hereafter 'graphene oxide', GO; size: 0.5-5μm) concentrations (0, 100, 200, 400, 800 and 1600mgL-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>100mgGOL-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 800mgGOL-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>400mgL-1) on V. faba seedlings indicate their safe nature and allow to suggest further studies. | pt |
dc.language.iso | eng | pt |
dc.publisher | Elsevier | pt |
dc.relation | info:eu-repo/grantAgreement/FCT/SFRH/SFRH%2FBPD%2F84671%2F2012/PT | pt |
dc.rights | restrictedAccess | por |
dc.subject | Graphene oxide | pt |
dc.subject | Oxidative stress | pt |
dc.subject | Phytotoxicity | pt |
dc.subject | Polypeptide pattern | pt |
dc.subject | Vicia faba | pt |
dc.title | Single-bilayer graphene oxide sheet impacts and underlying potential mechanism assessment in germinating faba bean (Vicia faba L.) | pt |
dc.type | article | |
dc.peerreviewed | yes | pt |
ua.distribution | international | pt |
degois.publication.firstPage | 834 | pt |
degois.publication.lastPage | 841 | pt |
degois.publication.title | Science of the Total Environment | pt |
degois.publication.volume | 472 | pt |
dc.date.embargo | 10000-01-01 | - |
dc.identifier.doi | 10.1016/j.scitotenv.2013.11.018 | pt |
Appears in Collections: | TEMA - Artigos CESAM - Artigos DBio - Artigos DEM - Artigos DQ - Artigos |
Files in This Item:
File | Description | Size | Format | |
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Anjum et al. - 2014 - Single-bilayer graphene oxide sheet impacts and un.pdf | 787.78 kB | Adobe PDF |
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