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Cadmium accumulation and distribution in populations of Phytolacca americana L. and the role of transpiration.
Chemosphere. 2010 Feb; 78(9):1136-41.C

Abstract

The concentrations of heavy metals in Phytolacca americana L. and corresponding soil samples from three contaminated sites and an uncontaminated site were studied. Hydroponic experiments were also conducted to investigate the Cd uptake ability and mechanism of P. americana. The field results showed that the average Cd concentration was 42 mg kg(-1) in P. americana leaves, with the highest concentration of 402 mg kg(-1) found at Datianwan. A significant relationship was observed between the concentrations of Cd in leaves and those of corresponding soils on a logarithmic scale. Under laboratory hydroponic conditions, the maximum Cd concentration in aerial tissues of P. americana was 637 mg kg(-1), under treatment with 100 microM Cd. The population from the uncontaminated site (Zijinshan) also had a remarkable ability to accumulate Cd in shoots to concentrations well in excess of 100 microM in the hydroponic experiment, similar to the population from contaminated site, suggesting that Cd accumulation is a constitutive trait of P. americana. In the presence of 100 microM Cd, the addition of polyethylene glycol decreased leaf transpiration, the shoot Cd concentration, and the shoot/root Cd concentration ratio. There was a significantly positive relationship between the shoot Cd concentration and the leaf transpiration of P. americana. A similar significant positive correlation was also obtained between the shoot/root Cd concentration and leaf transpiration. Moreover, pretreatment with 5 microM abscisic acid or 5 microM HgCl(2) significantly decreased the Cd concentration in P. americana shoots. These results suggest that transpiration has an important role in Cd accumulation in shoots of P. americana.

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Authors+Show Affiliations

Liu X
College of Life Sciences, Nanjing Agricultural University, Nanjing, People's Republic of China.
Peng K
No affiliation info available
Wang A
No affiliation info available
Lian C
No affiliation info available
Shen Z
No affiliation info available

MeSH

Abscisic AcidBiodegradation, EnvironmentalCadmiumPhotosynthesisPhytolacca americanaPlant Growth RegulatorsPlant LeavesPlant RootsPlant ShootsPlant TranspirationPolyethylene GlycolsSoil Pollutants

Pub Type(s)

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

Language

eng

PubMed ID

20060149

Citation

Liu, Xiaoqing, et al. "Cadmium Accumulation and Distribution in Populations of Phytolacca Americana L. and the Role of Transpiration." Chemosphere, vol. 78, no. 9, 2010, pp. 1136-41.
Liu X, Peng K, Wang A, et al. Cadmium accumulation and distribution in populations of Phytolacca americana L. and the role of transpiration. Chemosphere. 2010;78(9):1136-41.
Liu, X., Peng, K., Wang, A., Lian, C., & Shen, Z. (2010). Cadmium accumulation and distribution in populations of Phytolacca americana L. and the role of transpiration. Chemosphere, 78(9), 1136-41. https://doi.org/10.1016/j.chemosphere.2009.12.030
Liu X, et al. Cadmium Accumulation and Distribution in Populations of Phytolacca Americana L. and the Role of Transpiration. Chemosphere. 2010;78(9):1136-41. PubMed PMID: 20060149.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Cadmium accumulation and distribution in populations of Phytolacca americana L. and the role of transpiration. AU - Liu,Xiaoqing, AU - Peng,Kejian, AU - Wang,Aiguo, AU - Lian,Chunlan, AU - Shen,Zhenguo, Y1 - 2010/01/13/ PY - 2009/10/07/received PY - 2009/12/11/revised PY - 2009/12/13/accepted PY - 2010/1/12/entrez PY - 2010/1/12/pubmed PY - 2010/5/5/medline SP - 1136 EP - 41 JF - Chemosphere JO - Chemosphere VL - 78 IS - 9 N2 - The concentrations of heavy metals in Phytolacca americana L. and corresponding soil samples from three contaminated sites and an uncontaminated site were studied. Hydroponic experiments were also conducted to investigate the Cd uptake ability and mechanism of P. americana. The field results showed that the average Cd concentration was 42 mg kg(-1) in P. americana leaves, with the highest concentration of 402 mg kg(-1) found at Datianwan. A significant relationship was observed between the concentrations of Cd in leaves and those of corresponding soils on a logarithmic scale. Under laboratory hydroponic conditions, the maximum Cd concentration in aerial tissues of P. americana was 637 mg kg(-1), under treatment with 100 microM Cd. The population from the uncontaminated site (Zijinshan) also had a remarkable ability to accumulate Cd in shoots to concentrations well in excess of 100 microM in the hydroponic experiment, similar to the population from contaminated site, suggesting that Cd accumulation is a constitutive trait of P. americana. In the presence of 100 microM Cd, the addition of polyethylene glycol decreased leaf transpiration, the shoot Cd concentration, and the shoot/root Cd concentration ratio. There was a significantly positive relationship between the shoot Cd concentration and the leaf transpiration of P. americana. A similar significant positive correlation was also obtained between the shoot/root Cd concentration and leaf transpiration. Moreover, pretreatment with 5 microM abscisic acid or 5 microM HgCl(2) significantly decreased the Cd concentration in P. americana shoots. These results suggest that transpiration has an important role in Cd accumulation in shoots of P. americana. SN - 1879-1298 UR - https://www.unboundmedicine.com/medline/citation/20060149/Cadmium_accumulation_and_distribution_in_populations_of_Phytolacca_americana_L__and_the_role_of_transpiration_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0045-6535(09)01453-2 DB - PRIME DP - Unbound Medicine ER -