Mitigating effect of nano-zerovalent iron, iron sulfate and EDTA against oxidative stress induced by chromium in Helianthus annuus L.

被引:0
作者
Hamid Mohammadi
Mehrnaz Hatami
Khatoon Feghezadeh
Mansour Ghorbanpour
机构
[1] Azarbaijan Shahid Madani University,Faculty of Agriculture
[2] Arak University,Department of Medicinal Plants, Faculty of Agriculture and Natural Resources
来源
Acta Physiologiae Plantarum | 2018年 / 40卷
关键词
L.; Heavy metal; Physiological alterations; Reactive oxygen species; Reducing and chelating agents; Nanoparticle;
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中图分类号
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摘要
Due to its wide industrial application, chromium (Cr) is known to be a critical environmental pollutant. Contamination of water and agricultural soil by Cr inhibits crop productivity and their physiological and biochemical processes. The objective of the current work was to investigate the effects of appropriate reducing agents such as EDTA, iron sulfate (Fe2+), and zerovalent nano iron (Fe0 nanoparticles) on growth and physiology of sunflower plants under Cr(VI) stress. Results showed that the Cr uptake increased by increasing the amount of EDTA, leading to a significant reduction in morphological and physiological parameters except for MDA and H2O2 contents. Treatment with Fe0 nanoparticles and Fe2+ reduced Cr concentration in root and shoot, increased root and shoot dry weight, plastid pigments (chlorophyll and carotenoids) and proline contents; however, the level of MDA and H2O2 decreased significantly. All parameters were affected by Fe2+ during the first week of sampling; however, Fe0 nanoparticles affected all traits until the end of the third sampling stage. A statistically significant and positive correlation was found between root Cr concentration and MDA and H2O2 seedlings treated with EDTA, Fe2+, and Fe0 grown under Cr stress. From the result of this study, it can be concluded that sunflower has the potential for accumulation of Cr as a heavy metal, and treatment with Fe0 nanoparticles to prevent Cr uptake is more effective than other employed treatments.
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[1]  
Antonkiewicz J(2016)Nickel bioaccumulation by the chosen plant species Acta Physiol Plant 38 11-9517
[2]  
Jasiewicz C(2016)The use of reed grass and giant miscanthus in the phytoremediation of municipal sewage sludge Environ Sci Pollut Res 23 9505-1238
[3]  
Koncewicz-Baran M(2002)Oxidative stress and antioxidative system in plants Curr Sci Bangalore 82 1227-568
[4]  
Sendor R(1997)Chromium chemistry and implications for environmental fate and toxicity Soil Sediment Contam 6 561-1845
[5]  
Antonkiewicz J(2000)Inhibition of ferric chelate reductase in alfalfa roots by cobalt, nickel, chromium, and copper J Plant Nutr 23 1833-207
[6]  
Kołodziej B(1973)Rapid determination of free proline for water-stress studies Plant Soil 39 205-30
[7]  
Bielińska E(1993)Effect of chromium on photosynthesis, respiration and nitrogen fixation in pea ( J Plant Physiol 142 25-865
[8]  
Arora A(1997) L.) seedlings Environ Sci Technol 31 860-28
[9]  
Sairam R(2001)Enhanced accumulation of Pb in Indian mustard by soil-applied chelating agents Chemosphere 45 21-210
[10]  
Srivastava G(2002)EDTA and HEDTA effects on Cd, Cr, and Ni uptake by J Soils Sedim 2 203-103