1. The effects of EDTA on plant growth and manganese (Mn) accumulation in Polygonum pubescens Blume cultured in unexplored soil, mining soil and tailing soil from the Pingle Mn mine, China
- Author
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Furong Li, Yi Li, Chunming Li, Kehui Liu, and Fangming Yu
- Subjects
China ,Plant growth ,Environmental remediation ,Health, Toxicology and Mutagenesis ,0211 other engineering and technologies ,chemistry.chemical_element ,Biomass ,Bioconcentration ,02 engineering and technology ,Manganese ,010501 environmental sciences ,complex mixtures ,01 natural sciences ,Mining ,Soil Pollutants ,Edetic Acid ,Chelating Agents ,0105 earth and related environmental sciences ,021110 strategic, defence & security studies ,Public Health, Environmental and Occupational Health ,General Medicine ,Pollution ,Phytoremediation ,Biodegradation, Environmental ,chemistry ,Polygonum pubescens ,Environmental chemistry ,Bioaccumulation ,Polygonum - Abstract
The effects of water-extractable Mn concentration, bioaccumulation factor (BAF), translocation factor (TF), and Mn uptake by Polygonum pubescens Blume cultured in the unexplored soil, mining soil and tailing soil from the Pingle Mn mine in China were quantified in a pot experiment to determine the effects of EDTA exposure on the success of phytoremediation. The results showed that EDTA significantly (P 0.05) increased the water-extractable Mn concentration, and soils with different amounts of artificial disturbances had different responses to EDTA exposure. Low and medium EDTA concentrations might have positive effect on plant growth of P. pubescens cultured in the unexplored soil, as indicated by comparable increases in biomass, plant height and photosynthetic pigment content, but opposite results were found with high EDTA concentrations exposure. EDTA exposure had a negative effect on the growth of P. pubescens cultured in the mining soil and tailing soil. In general, the concentration of Mn in different tissues significantly (P 0.05) increased as the EDTA concentration increased in each soil. The efficacy of Mn remediation by P. pubescens was enhanced in all three soils, with all EDTA treatments.
- Published
- 2019