Magnetite (Fe3O4) Nanoparticles Alleviate Growth Inhibition and Oxidative Stress Caused by Heavy Metals in Young Seedlings of Cucumber (Cucumis Sativus L)
Accumulation of heavy metals in the ecosystem and their toxic effects through food chain can cause serious ecological and health problems. In the present study, experiments were performed to understand how the addition of magnetite (Fe3O4) nanoparticles reduces the toxicity caused by Cd, Pb, Cu, and...
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2017-01-01
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doaj-9e4502796a6b4696806427e202b0116e2021-02-02T05:00:46ZengEDP SciencesITM Web of Conferences2271-20972017-01-01120303410.1051/itmconf/20171203034itmconf_ita2017_03034Magnetite (Fe3O4) Nanoparticles Alleviate Growth Inhibition and Oxidative Stress Caused by Heavy Metals in Young Seedlings of Cucumber (Cucumis Sativus L)Konate Alexandre0He Xiao1Rui Yu-Kui2Zhang Zhi-Yong3College of Resources and Environmental Sciences, China Agricultural UniversityKey Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Key Laboratory of Nuclear Radiation and Nuclear Energy Technology, Institute of High Energy Physics, Chinese Academy of SciencesCollege of Resources and Environmental Sciences, China Agricultural UniversityKey Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Key Laboratory of Nuclear Radiation and Nuclear Energy Technology, Institute of High Energy Physics, Chinese Academy of SciencesAccumulation of heavy metals in the ecosystem and their toxic effects through food chain can cause serious ecological and health problems. In the present study, experiments were performed to understand how the addition of magnetite (Fe3O4) nanoparticles reduces the toxicity caused by Cd, Pb, Cu, and Zn in cucumber plants. Plant growth parameters, lipid peroxidation, and antioxidant enzymes were measured in seedling samples treated with either metals or metals supplemented with Fe3O4 to demonstrate the reduction in metal-induced oxidative stress conferred by Fe3O4. Results showed that the toxic effect of metals on seedling growth parameters can be arranged in the rank order of inhibition as follows: Cu > Cd > Zn > Pb. Exposure to metals significantly decreased the seedlings growth, the activities of superoxide dismutase (SOD) and peroxidases (POD), while the malondialdehyde (MDA) content significantly increased in cucumber seedlings. The reducing activity of nano-Fe3O4 against heavy metals stresses was confirmed in this study by the decrease in MDA content. The correlation between the decrease of MDA concentration and the increase in SOD and POD activities in the presence of nano-Fe3O4 suggest that the MDA reduction in the tested seedlings can result from the increased enzyme activity.https://doi.org/10.1051/itmconf/20171203034 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Konate Alexandre He Xiao Rui Yu-Kui Zhang Zhi-Yong |
spellingShingle |
Konate Alexandre He Xiao Rui Yu-Kui Zhang Zhi-Yong Magnetite (Fe3O4) Nanoparticles Alleviate Growth Inhibition and Oxidative Stress Caused by Heavy Metals in Young Seedlings of Cucumber (Cucumis Sativus L) ITM Web of Conferences |
author_facet |
Konate Alexandre He Xiao Rui Yu-Kui Zhang Zhi-Yong |
author_sort |
Konate Alexandre |
title |
Magnetite (Fe3O4) Nanoparticles Alleviate Growth Inhibition and Oxidative Stress Caused by Heavy Metals in Young Seedlings of Cucumber (Cucumis Sativus L) |
title_short |
Magnetite (Fe3O4) Nanoparticles Alleviate Growth Inhibition and Oxidative Stress Caused by Heavy Metals in Young Seedlings of Cucumber (Cucumis Sativus L) |
title_full |
Magnetite (Fe3O4) Nanoparticles Alleviate Growth Inhibition and Oxidative Stress Caused by Heavy Metals in Young Seedlings of Cucumber (Cucumis Sativus L) |
title_fullStr |
Magnetite (Fe3O4) Nanoparticles Alleviate Growth Inhibition and Oxidative Stress Caused by Heavy Metals in Young Seedlings of Cucumber (Cucumis Sativus L) |
title_full_unstemmed |
Magnetite (Fe3O4) Nanoparticles Alleviate Growth Inhibition and Oxidative Stress Caused by Heavy Metals in Young Seedlings of Cucumber (Cucumis Sativus L) |
title_sort |
magnetite (fe3o4) nanoparticles alleviate growth inhibition and oxidative stress caused by heavy metals in young seedlings of cucumber (cucumis sativus l) |
publisher |
EDP Sciences |
series |
ITM Web of Conferences |
issn |
2271-2097 |
publishDate |
2017-01-01 |
description |
Accumulation of heavy metals in the ecosystem and their toxic effects through food chain can cause serious ecological and health problems. In the present study, experiments were performed to understand how the addition of magnetite (Fe3O4) nanoparticles reduces the toxicity caused by Cd, Pb, Cu, and Zn in cucumber plants. Plant growth parameters, lipid peroxidation, and antioxidant enzymes were measured in seedling samples treated with either metals or metals supplemented with Fe3O4 to demonstrate the reduction in metal-induced oxidative stress conferred by Fe3O4. Results showed that the toxic effect of metals on seedling growth parameters can be arranged in the rank order of inhibition as follows: Cu > Cd > Zn > Pb. Exposure to metals significantly decreased the seedlings growth, the activities of superoxide dismutase (SOD) and peroxidases (POD), while the malondialdehyde (MDA) content significantly increased in cucumber seedlings. The reducing activity of nano-Fe3O4 against heavy metals stresses was confirmed in this study by the decrease in MDA content. The correlation between the decrease of MDA concentration and the increase in SOD and POD activities in the presence of nano-Fe3O4 suggest that the MDA reduction in the tested seedlings can result from the increased enzyme activity. |
url |
https://doi.org/10.1051/itmconf/20171203034 |
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