Chelator effects on bioconcentration and translocation of cadmium by hyperaccumulators, Tagetes patula and Impatiens walleriana
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An Anaerobic Biosensor Assay for the Detection of Mercury and Cadmium
Published on: December 17, 2018
Jhen-Lian Wei1, Hung-Yu Lai, Zueng-Sang Chen
1Department of Agricultural Chemistry, National Taiwan University, Taipei 10617, Taiwan. lan710306@yahoo.com.tw
Abstract:
French marigold (Tagetes patula) and impatiens (Impatiens walleriana) can act as hyperaccumulator plants for removal of cadmium (Cd) from contaminated sites. In this study, an exponential decay model was used to predict the maximum removal of Cd from artificially spiked soils by impatiens. Application of a chelator, EDTA, was also assessed for effects on the bioconcentration (BCF) and translocation (TF) factors of the two species with four replicates. Exposure to Cd significantly decreased the biomass of two plant species. Impatiens and French marigold accumulated Cd at a rate of 200-1200 mg Cd kg(-1) in shoots, with BCFs and TFs of 8.5-15 and 1.7-2.6, respectively.
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