Journal of
Environmental Chemistry and Ecotoxicology

  • Abbreviation: J. Environ. Chem. Ecotoxicol.
  • Language: English
  • ISSN: 2141-226X
  • DOI: 10.5897/JECE
  • Start Year: 2009
  • Published Articles: 197

Full Length Research Paper

The role of EDTA on cadmium phytoextraction in a cadmium-hyperaccumulator Rorippa globosa

Yuebing Sun1,2, Qixing Zhou2,3*, Yingming Xu1, Lin Wang1 and Xuefeng Liang1
  1Key Laboratory of Production Environment and Agro-product Safety, Ministry of Agriculture, Tianjin Key Laboratory of Agro-environment and Agro-product Safety, Agro-Environmental Protection Institute, Ministry of Agriculture, Tianjin 300191, China.     2Key Laboratory of Terrestrial Ecological Process, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China.   3Key Laboratory of Pollution Processes and Environmental Criteria (Ministry of Education), College of Environmental Science and Engineering, Nankai University, Tianjin 300071, China.
Email: [email protected]

  •  Accepted: 29 November 2010
  •  Published: 31 March 2011



Enhanced phytoextraction technologies have been proposed as an effective approach to the decontamination of heavy metals in soils. In this study, the application of ethylene diamine tetraacetic acid (0.5 and 1.0 g/kg EDTA) at preflowering stage depressed Rorippa globosa growth and Cd uptake, the dry biomass, Cd concentration and total metal accumulation (TMC) of shoots at the concentration of 1.0 g/kg EDTA resulted in 39.6, 3.1 and 41.0% reduction, respectively, relative to the control. In contrast, when EDTA was added at flowering and mature stages, it facilitated plant production and Cd absorption. Especially for 1.0 g/kg EDTA applied at mature stage, the maximum of shoot dry biomass, Cd concentration, TMC and remediation ratio (RR) were obtained, which were 4.7 g/pot, 210.3 mg/kg, 982.4 µg/pot and 1.6, respectively. Therefore, the moderate concentration of EDTA (1.0 g/kg) applied at optimal growing stage (mature stage) of R. globosa was more effective in increasing phytoextraction of Cd from contaminated soils.


Key words: EDTA, induced-phytoextraction, Cd-hyperaccumulator, Rorippa globosa.