Effect of oil refinery sludges on the growth and antioxidant system of alfalfa plants

JOURNAL OF HAZARDOUS MATERIALS

卷:171

Article

Carmen Marti, M.¹  Camejo, Daymi¹  Fernandez-Garcia, Nieves¹  Rellan-Alvarez, Ruben²  Marques, Silvia³  Sevilla, Francisca¹  Jimenez, Ana¹ 

[1] CSIC, CEBAS, Dept Stress Biol & Plant Pathol, E-30100 Murcia, Spain

[2] CSIC, Estac Expt Aula Dei, Dept Plant Nutr, E-50080 Zaragoza, Spain

[3] CSIC, Estac Expt Zaidin, Environm Protect Dept, E-18080 Granada, Spain

关键词: Alfalfa;    Antioxidants;    Homoglutathione;    Oil refinery sludge;    Oxidative stress;   

DOI  :  10.1016/j.jhazmat.2009.06.083

来源: Elsevier

【 摘 要 】

The refining process in the petrochemical industry generates oil refinery sludges, a potentially contaminating waste product, with a high content of hydrocarbons and heavy metals. Faster degradation of hydrocarbons has been reported in vegetated soils than in non-vegetated soils, but the impact of these contaminants on the plants physiology and on their antioxidant system is not well known. In this study, the effect of the addition of petroleum sludge to soil on the physiological parameters, nutrient contents, and oxidative and antioxidant status in alfalfa was investigated. An inhibition of alfalfa growth and an induction of oxidative stress, as indicated by an increase in protein oxidation, were found. Also, the superoxide dismutase isoenzymes, peroxidase, and those enzymes involved in the ascorbate-glutathione cycle showed significant activity increases, parallel to an enhancement of total homoglutathione, allowing plants being tolerant to this situation. This information is necessary to establish successful and sustainable plant-based remediation strategies. (c) 2009 Elsevier B.V. All rights reserved.

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