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Cadmium and zinc bioaccumulation by Phytolacca americana from hydroponic media and contaminated soils.
Int J Phytoremediation. 2019; 21(12):1215-1224.IJ

Abstract

Hydroponic, greenhouse and field experiments were conducted to explore the potential of pokeweed (Phytolacca americana L.) to accumulate Zn and Cd from nutrient solutions and contaminated soils. The hydroponic results confirmed that this native species is a strong Zn and Cd bioaccumulator that does not experience severe phytotoxicity until quite high root and shoot concentrations, approaching 4000 and 1600 mg kg-1 of Zn, and 1500 and 500 mg kg-1 of Cd, respectively. These high Zn and Cd concentrations were accompanied by increased sulfur and lower manganese in both shoots and roots. However, in field and greenhouse trials with soils historically contaminated by a number of heavy metals including Zn and Cd, concentrations of Zn and Cd in shoots of P. americana reached concentrations less than 30% and 10%, respectively, of those achieved with hydroponics. The main constraint to phytoremediation of soils by P. americana was the low concentrations of Zn and Cd in soil solution. Pretreatment of the metal-contaminated soil by oxalic acid increased soluble Cd and Zn but failed to increase plant uptake of either metal, a possible result of higher solubility of competing metal ions (Cu, Mn) or low bioavailability of Cd and Zn-oxalate complexes.

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Publisher Full Text (DOI)

Authors+Show Affiliations

McBride MB
Section of Soil and Crop Sciences, Cornell University , Ithaca , NY , USA.
Zhou Y
International Joint Research Center for Persistent Toxic Substances, College of Environmental and Resource Sciences, Zhejiang University , Hangzhou , China.

MeSH

Biodegradation, EnvironmentalCadmiumHydroponicsPhytolacca americanaPlant RootsSoilSoil PollutantsZinc

Pub Type(s)

Journal Article

Language

eng

PubMed ID

31099251

Citation

McBride, Murray B., and Yuting Zhou. "Cadmium and Zinc Bioaccumulation By Phytolacca Americana From Hydroponic Media and Contaminated Soils." International Journal of Phytoremediation, vol. 21, no. 12, 2019, pp. 1215-1224.
McBride MB, Zhou Y. Cadmium and zinc bioaccumulation by Phytolacca americana from hydroponic media and contaminated soils. Int J Phytoremediation. 2019;21(12):1215-1224.
McBride, M. B., & Zhou, Y. (2019). Cadmium and zinc bioaccumulation by Phytolacca americana from hydroponic media and contaminated soils. International Journal of Phytoremediation, 21(12), 1215-1224. https://doi.org/10.1080/15226514.2019.1612849
McBride MB, Zhou Y. Cadmium and Zinc Bioaccumulation By Phytolacca Americana From Hydroponic Media and Contaminated Soils. Int J Phytoremediation. 2019;21(12):1215-1224. PubMed PMID: 31099251.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Cadmium and zinc bioaccumulation by Phytolacca americana from hydroponic media and contaminated soils. AU - McBride,Murray B, AU - Zhou,Yuting, Y1 - 2019/05/17/ PY - 2019/5/18/pubmed PY - 2019/10/16/medline PY - 2019/5/18/entrez KW - Cadmium KW - hyperaccumulator plants KW - phytoremediation KW - pokeweed KW - sulfur KW - zinc SP - 1215 EP - 1224 JF - International journal of phytoremediation JO - Int J Phytoremediation VL - 21 IS - 12 N2 - Hydroponic, greenhouse and field experiments were conducted to explore the potential of pokeweed (Phytolacca americana L.) to accumulate Zn and Cd from nutrient solutions and contaminated soils. The hydroponic results confirmed that this native species is a strong Zn and Cd bioaccumulator that does not experience severe phytotoxicity until quite high root and shoot concentrations, approaching 4000 and 1600 mg kg-1 of Zn, and 1500 and 500 mg kg-1 of Cd, respectively. These high Zn and Cd concentrations were accompanied by increased sulfur and lower manganese in both shoots and roots. However, in field and greenhouse trials with soils historically contaminated by a number of heavy metals including Zn and Cd, concentrations of Zn and Cd in shoots of P. americana reached concentrations less than 30% and 10%, respectively, of those achieved with hydroponics. The main constraint to phytoremediation of soils by P. americana was the low concentrations of Zn and Cd in soil solution. Pretreatment of the metal-contaminated soil by oxalic acid increased soluble Cd and Zn but failed to increase plant uptake of either metal, a possible result of higher solubility of competing metal ions (Cu, Mn) or low bioavailability of Cd and Zn-oxalate complexes. SN - 1549-7879 UR - https://www.unboundmedicine.com/medline/citation/31099251/Cadmium_and_zinc_bioaccumulation_by_Phytolacca_americana_from_hydroponic_media_and_contaminated_soils_ DB - PRIME DP - Unbound Medicine ER -