Phosphorus Enhances Cr(VI) Uptake and Accumulation in Leersia hexandra Swartz

  • Chan-Cui Wu
  • Jie Liu
  • Xue-Hong ZhangEmail author
  • Shi-Guang Wei


The effects of P supplementation on chromium(VI) uptake by Leersia hexandra Swartz were studied using pot-culture experiment. P-deficiency and zero-P addition controls were included. The Cr(VI) uptake followed Michaelis–Menten kinetics. Compare with the control, the P-supply decreased the Michaelis constant (Km) by 16.9% and the P-deficiency decreased the maximum uptake velocity (Vmax) by 18%, which indicated no inhibition and competition between P and Cr(VI) uptake by L. hexandra. Moreover, there were a synergistic action between P and Cr(VI) suggests that Cr(VI) uptake by the roots of L. hexandra may be an active process. The bioconcentration factor (BCF) and the transport factor (TF′) increased with the increase in P supply. The highest BCF was 3.6-folds higher than the control, indicating that the additional P contribute to a higher ability of L. hexandra transporting Cr from root to the aboveground parts.


Leersia hexandra Swartz Chromium (Cr) Phosphate (P) Cr hyperaccumulators Phytoremediation 



The authors thank the financial supports from the National Natural Science Foundation of China (41471270, 31460155) and Guangxi Science and Technology Major Project (Gui Ke AA17204047).


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© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  • Chan-Cui Wu
    • 1
    • 2
  • Jie Liu
    • 3
  • Xue-Hong Zhang
    • 1
    Email author
  • Shi-Guang Wei
    • 1
  1. 1.School of Life and Environmental SciencesGuilin University of Electronic TechnologyGuilinPeople’s Republic of China
  2. 2.Light industry and Food Engineering CollegeGuangxi UniversityNanningPeople’s Republic of China
  3. 3.College of Environmental Science and EngineeringGuilin University of TechnologyGuilinPeople’s Republic of China

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