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The Effects of Cadmium Exposure on Cadmium Fractionation and Enzyme Activities in the Rhizosphere of Two Radish Cultivars (Raphanus sativus L.)

Bulletin of Environmental Contamination and Toxicology volume 98, pages 290–295 (2017)Cite this article

Abstract

The effects of increasing Cd additions on plant growth and Cd fractionation and enzyme activities in rhizosphere soil of two radish cultivars were investigated. The results showed that Cd concentrations in shoot and root of cultivar 4 were both higher than for cultivar 19 under different Cd levels. Compared with cultivar 19, the total, shoot and root biomasses of cultivar 4 were significantly reduced with increasing Cd levels. A decrease in soil pH was observed for cultivar 4. The exchangeable Cd concentration of soil from cultivar 4 was significantly higher than for soil from cultivar 19, while the carbonate-bound Cd concentration of soil from cultivar 4 was significantly lower than for cultivar 19. Enzyme activities, especially acid phosphatase activity, were more susceptible to Cd in soil from cultivar 4. These results indicated that cultivar 19 exhibits a stronger ability to adapt to Cd stress than cultivar 4.

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Acknowledgements

This work was supported by the National Natural Science Foundation of China (Program No. 41271275). We are grateful to Professor Ron McLaren (Emeritus Professor of Environment Soil Science, Lincoln University) for critical review and revision of this manuscript.

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Affiliations

  1. Hubei Provincial Engineering Laboratory for New Fertilizers/Research Center of Trace Elements/Key Laboratory of Horticultural Plant Biology (HZAU), MOE/Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture, Huazhong Agricultural University, Wuhan, 430070, China

    Juan Xin, Xiaohu Zhao, Qiling Tan, Xuecheng Sun, Xin Wen, Shiyu Qin & Chengxiao Hu

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  1. Juan Xin
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  2. Xiaohu Zhao
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  3. Qiling Tan
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  4. Xuecheng Sun
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  5. Xin Wen
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  6. Shiyu Qin
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  7. Chengxiao Hu
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Correspondence to Chengxiao Hu.

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Xin, J., Zhao, X., Tan, Q. et al. The Effects of Cadmium Exposure on Cadmium Fractionation and Enzyme Activities in the Rhizosphere of Two Radish Cultivars (Raphanus sativus L.). Bull Environ Contam Toxicol 98, 290–295 (2017). https://doi.org/10.1007/s00128-016-1998-x

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  • DOI: https://doi.org/10.1007/s00128-016-1998-x

Keywords

  • Cd fractionation
  • Enzyme activities
  • Bioavailable
  • Rhizosphere