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Isolation of Mucor circinelloides Z4 and Mucor racemosus Z8 from heavy metal-contaminated soil and their potential in promoting phytoextraction with Guizhou oilseed rap

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Abstract

Fungi Z4 and Z8, isolated from the heavy metal polluted soil, have strong resistance to Cd and Pb. The strains were identified on the base of their morphology and internal transcribed spacers (ITS) region. Pot experiments were conducted to study the effect of two strains (Z4 and Z8) on the growth and accumulation of Cd and Pb of Guizhou oilseed rape. The results show that strains Z4 and Z8 belong to Mucor circinelloides and Mucor racemosus, respectively. The heights of Guizhou oilseed rape inoculated with strain Z8 increase by 47.90% than the control. The highest fresh mass is found in the plant with Z4/Z8, which is enhanced by 160.81%. Pot experiments show that Z4/Z8 inoculums can accelerate accumulation of heavy metals in the plant. The contents of Cd and Pb are increased by 117.60% and 63.48%, respectively. Meanwhile, the heavy metal concentrations in potting soil with the two strains are found to be lower than those of the control, and the concentrations of Cd and Pb are decreased by 60.57% and 27.12%, respectively.

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Authors and Affiliations

  1. Hunan Key Laboratory of Green Packaging and Biological Nanotechnology, Hunan University of Technology, Zhuzhou, 412007, China

    Sheng-cui Zhu  (朱生翠), Jian-xin Tang  (汤建新), Xiao-xi Zeng  (曾晓希), Ben-jie Wei  (魏本杰), Shao-di Yang  (杨少迪) & Bin Huang  (黄斌)

  2. Meteorological Institute of Qinghai Province, Xining, 810001, China

    Sheng-cui Zhu  (朱生翠)

  3. School of Metallurgy and Environment, Central South University, Changsha, 410083, China

    Xiao-xi Zeng  (曾晓希)

Authors
  1. Sheng-cui Zhu  (朱生翠)
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  2. Jian-xin Tang  (汤建新)
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  3. Xiao-xi Zeng  (曾晓希)
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  4. Ben-jie Wei  (魏本杰)
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  5. Shao-di Yang  (杨少迪)
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  6. Bin Huang  (黄斌)
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Corresponding author

Correspondence to Xiao-xi Zeng  (曾晓希).

Additional information

Foundation item: Projects(31100082, 60871007, 61171061) supported by the National Natural Science Foundation of China; Project(2012SK4028) supported by the Science and Technology Agency of Hunan Province, China; Project(2013M530358) supported by the Post-doctoral Program of China; Projects(12JJ4032, 12JJ4082) supported by the Natural Science Foundation of Hunan Province, China

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Zhu, Sc., Tang, Jx., Zeng, Xx. et al. Isolation of Mucor circinelloides Z4 and Mucor racemosus Z8 from heavy metal-contaminated soil and their potential in promoting phytoextraction with Guizhou oilseed rap. J. Cent. South Univ. 22, 88–94 (2015). https://doi.org/10.1007/s11771-015-2498-6

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  • DOI: https://doi.org/10.1007/s11771-015-2498-6

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