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Oxidative stress and change in plant metabolism of maize (Zea mays L.) growing in contaminated soil with elemental sulfur and toxic effect of zinc

Author

Listed:
  • Y. Cui

    (College of Resources and Environment, Graduate University of Chinese Academy of Sciences, Beijing, P.R. China)

  • N. Zhao

    (College of Resources and Environment, Graduate University of Chinese Academy of Sciences, Beijing, P.R. China
    College of Resources and Environmental Science, Agriculture University of Hebei,)

Abstract

Responses of the chlorophyll, antioxidant enzymes and lipid peroxidation in maize growing in soil with zinc (Zn) and elemental sulfur (S) were studied. The results showed that sulfur alleviated the high toxicity of Zn and increased the concentration of chlorophyll. The activities of superoxide dismutase (SOD) and peroxidase (POD) increased significantly and catalase (CAT) activity significantly decreased in plants treated with 1000 mg/kg Zn alone. Compared with the control, SOD and POD activity increased from 62.3 to 77.3 U/mg protein and 28 to41 nmol/min/mg protein, respectively. However, CAT activity decreased from 1.96 to 1.48 µmol H2O2/min/mg protein. The concentration of malondialdehyde (MDA) in maize leaves significantly increased as the concentration of Zn increased. Moderate concentrations of S (32 and 160 mg/kg) alleviated the increase of both SOD and POD activity and the decrease of CAT activity that were observed under conditions of Zn stress. The greatest decrease of SOD and POD activity were 17% and 21% and both were observed in the treatment of 160 mg/kg S combined with 1000 mg/kg Zn. In this treatment, the greatest increase of CAT activity (11%) was also observed. The results suggest that moderate supplementation with S may ameliorate the toxicity caused by excess Zn and plays an important role in protecting plants from oxidative stress induced by excess Zn.

Suggested Citation

  • Y. Cui & N. Zhao, 2011. "Oxidative stress and change in plant metabolism of maize (Zea mays L.) growing in contaminated soil with elemental sulfur and toxic effect of zinc," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 57(1), pages 34-39.
    • Handle: RePEc:caa:jnlpse:v:57:y:2011:i:1:id:193-2010-pse
    DOI: 10.17221/193/2010-PSE
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    References listed on IDEAS

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    1. Y. Cui & Q. Wang, 2006. "Physiological responses of maize to elemental sulphur and cadmium stress," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 52(11), pages 523-529.
    2. D. Pavlíková & M. Pavlík & L. Staszková & P. Tlustoš & J. Száková & J. Balík, 2007. "The effect of potentially toxic elements and sewage sludge on the activity of regulatory enzyme glutamate kinase," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 53(5), pages 201-206.
    3. J. Lachman & J. Dudjak & D. Miholová & D. Kolihová & V. Pivec, 2005. "Effect of cadmium on flavonoid content in young barley (Hordeum sativum L.) plants," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 51(11), pages 513-516.
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    1. M. Hejcman & S. Vondráčková & V. Müllerová & K. Červená & J. Száková & P. Tlustoš, 2012. "Effect of quick lime and superphosphate additives on emergence and survival of Rumex obtusifolius seedlings in acid and alkaline soils contaminated by As, Cd, Pb, and Zn," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 58(12), pages 561-667.

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