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| Plant Bio-indicators of Eco-toxicity of Oil-contaminated Soil During Bioremediation |
| Received:July 26, 2014 |
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| KeyWord:soil;crude oil contamination;bioremediation;higher plants;bio-indicator |
| Author Name | Affiliation | E-mail | | SHEN Wei-hang | School of Environment and Energy, South China University of Technology, Guangzhou 510006, China | | | ZHU Neng-wu | School of Environment and Energy, South China University of Technology, Guangzhou 510006, China
Key Laboratory of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, Guangzhou 510006, China | nwzhu@scut.edu.cn | | WANG Hua-jin | School of Environment and Energy, South China University of Technology, Guangzhou 510006, China | | | DANG Zhi | School of Environment and Energy, South China University of Technology, Guangzhou 510006, China
Key Laboratory of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, Guangzhou 510006, China | | | CHEN Xiao-qiang | School of Environment and Energy, South China University of Technology, Guangzhou 510006, China | |
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| Abstract: |
| Seed germination, seedling growth and leaf biochemical parameters of plant could be used to comprehensively reflect soil health. In order to screen plant bio-indicators of oil-contaminated soil and to explore the change pattern of its eco-toxicity during bioremediation, a bioremediation experiment was conducted. Crude oil degrading bacterial consortium were built with three strains isolated from oil-contaminated soil. Seed germination, seedling growth, and leaf photosynthetic pigment content, MDA(malonaldehyde) content and SOD(superoxide dismutase) activities of wheat and radish were measured. During the bioremediation process, soil eco-toxicity was the greatest on the 16th day and gradually dropped down to a normal level thereafter. Soil eco-toxicity was different for different plant bio-indicators applied. The present findings suggest that seed germination, seedling growth, and leaf photosynthetic pigment content, MDA and SOD activities could be used as potential indicators of the effectiveness of microbial remediation of oil-contaminated soils. |
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