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Cadmium and manganese accumulation in Phytolacca americana L. and the roles of non-protein thiols and organic acids.
Int J Phytoremediation. 2013; 15(4):307-19.IJ

Abstract

Phytolacca americana L. can accumulate large amounts of heavy metals in its aerial tissues, especially cadmium (Cd) and manganese (Mn). It has great potential for use in phytoextraction of metals from multi-metal-contaminated soils. This study was conducted to further investigate the Cd- and Mn-tolerance strategies of this plant. Concentrations of non-protein thiols (NPTs) and phytochelatins (PCs) in leaves and roots increased significantly as the concentration of Cd in solution increased. The molar ratios of PCs:soluble Cd ranged from 1.8 to 3.6 in roots and 8.1 to 31.6 in leaves, suggesting that the cellular response involving PC synthesis was sufficient to complex Cd ions in the cytosol, especially that of leaves. In contrast, excess Mn treatments did not result in a significant increase in NPT or PC concentrations in leaves or roots. Oxalic acid concentrations in leaves of plants exposed to 2 or 20 mM Mn reached 69.4 to 89.3 mg (0.771 to 0.992 mmol) g(-1) dry weight, respectively, which was approximately 3.7- to 8.6-fold higher than the Mn level in the 0.6 M HCl extract. Thus, oxalic acid may play an important role in the detoxification of Mn.

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Authors+Show Affiliations

Gao L
College of Life Sciences, Nanjing Agricultural University, Nanjing, the People's Republic of China.
Peng K
No affiliation info available
Xia Y
No affiliation info available
Wang G
No affiliation info available
Niu L
No affiliation info available
Lian C
No affiliation info available
Shen Z
No affiliation info available

MeSH

Biodegradation, EnvironmentalCadmiumCarboxylic AcidsDose-Response Relationship, DrugHydroponicsLipid PeroxidationManganeseOrgan SpecificityOxalic AcidPhytochelatinsPhytolacca americanaPlant LeavesPlant RootsSoil PollutantsStress, PhysiologicalSulfhydryl Compounds

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

23487997

Citation

Gao, Lu, et al. "Cadmium and Manganese Accumulation in Phytolacca Americana L. and the Roles of Non-protein Thiols and Organic Acids." International Journal of Phytoremediation, vol. 15, no. 4, 2013, pp. 307-19.
Gao L, Peng K, Xia Y, et al. Cadmium and manganese accumulation in Phytolacca americana L. and the roles of non-protein thiols and organic acids. Int J Phytoremediation. 2013;15(4):307-19.
Gao, L., Peng, K., Xia, Y., Wang, G., Niu, L., Lian, C., & Shen, Z. (2013). Cadmium and manganese accumulation in Phytolacca americana L. and the roles of non-protein thiols and organic acids. International Journal of Phytoremediation, 15(4), 307-19.
Gao L, et al. Cadmium and Manganese Accumulation in Phytolacca Americana L. and the Roles of Non-protein Thiols and Organic Acids. Int J Phytoremediation. 2013;15(4):307-19. PubMed PMID: 23487997.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Cadmium and manganese accumulation in Phytolacca americana L. and the roles of non-protein thiols and organic acids. AU - Gao,Lu, AU - Peng,Kejian, AU - Xia,Yan, AU - Wang,Guiping, AU - Niu,Liyuan, AU - Lian,Chunlan, AU - Shen,Zhenguo, PY - 2013/3/16/entrez PY - 2013/3/16/pubmed PY - 2013/6/7/medline SP - 307 EP - 19 JF - International journal of phytoremediation JO - Int J Phytoremediation VL - 15 IS - 4 N2 - Phytolacca americana L. can accumulate large amounts of heavy metals in its aerial tissues, especially cadmium (Cd) and manganese (Mn). It has great potential for use in phytoextraction of metals from multi-metal-contaminated soils. This study was conducted to further investigate the Cd- and Mn-tolerance strategies of this plant. Concentrations of non-protein thiols (NPTs) and phytochelatins (PCs) in leaves and roots increased significantly as the concentration of Cd in solution increased. The molar ratios of PCs:soluble Cd ranged from 1.8 to 3.6 in roots and 8.1 to 31.6 in leaves, suggesting that the cellular response involving PC synthesis was sufficient to complex Cd ions in the cytosol, especially that of leaves. In contrast, excess Mn treatments did not result in a significant increase in NPT or PC concentrations in leaves or roots. Oxalic acid concentrations in leaves of plants exposed to 2 or 20 mM Mn reached 69.4 to 89.3 mg (0.771 to 0.992 mmol) g(-1) dry weight, respectively, which was approximately 3.7- to 8.6-fold higher than the Mn level in the 0.6 M HCl extract. Thus, oxalic acid may play an important role in the detoxification of Mn. SN - 1522-6514 UR - https://www.unboundmedicine.com/medline/citation/23487997/Cadmium_and_manganese_accumulation_in_Phytolacca_americana_L__and_the_roles_of_non_protein_thiols_and_organic_acids_ L2 - https://www.tandfonline.com/doi/full/10.1080/15226514.2012.702800 DB - PRIME DP - Unbound Medicine ER -