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Cadmium (Cd) Localization in Tissues of Cotton (Gossypium hirsutum L.), and Its Phytoremediation Potential for Cd-Contaminated Soils

  • Zhifan ChenEmail author
  • Ye Zhao
  • Lidong Fan
  • Liteng Xing
  • Yujie Yang
Article

Abstract

Phytoremediation using economically valuable, large biomass, non-edible plants is a promising method for metal-contaminated soils. This study investigated cotton’s tolerance for Cd and remediation potential through analyzing Cd bioaccumulation and localization in plant organs under different soil Cd levels. Results showed cotton presents good tolerance when soil Cd concentration ≤20.26 mg kg−1. Cotton had good Cd accumulation ability under low soil Cd levels (<1.26 mg kg−1), with a TF value (the ratio of Cd concentration in stem to root) above 1. Energy dispersive X-ray microanalysis indicated cotton leaf transpiration played a key role in extracting soil Cd, while roots and stems were the main compartments of Cd storage. Cd complexation to other organic constituents in root and stem cell sap could be a primary detoxifying strategy. Therefore, cotton is a potential candidate for phytoremediation of Cd-contaminated soils.

Keywords

Heavy metal Cotton plant Bioaccumulation Tolerance Energy dispersive X-ray microanalysis 

Notes

Acknowledgments

This research was supported by the National Natural Science Foundation of China (No. 41301336), and the Research Funds for Henan University (No. HD-ZHS-201405).

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Copyright information

© Springer Science+Business Media New York 2015

Authors and Affiliations

  • Zhifan Chen
    • 1
    Email author
  • Ye Zhao
    • 2
  • Lidong Fan
    • 1
  • Liteng Xing
    • 1
  • Yujie Yang
    • 1
  1. 1.Institute of Resources and Environment, College of Environment and PlanningHenan UniversityKaifengChina
  2. 2.State Key Laboratory of Water Environment Simulation, School of EnvironmentBeijing Normal UniversityBeijingChina

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