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Huang Y, Xi Y, Gan L, Johnson D, Wu Y, Ren D, Liu H. Effects of lead and cadmium on photosynthesis in Amaranthus spinosus and assessment of phytoremediation potential. Int J Phytoremediation 2019; 21:1041-1049. [PMID: 31020865 DOI: 10.1080/15226514.2019.1594686] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
This study assessed the effects of Pb (0, 200, 500, 1000 mg kg-1) and Cd (0, 5, 15, 30, 50 mg kg-1) on photosynthesis in Amaranthus spinosus (A. spinosus), as well as the potential for phytoremediation by pot-culture experiment. Exposure to Pb/Cd produced a concentration-dependent decrease in biomass and all photosynthesis parameters, except for non-photochemical quenching, which increased with the metal concentration. The metals accumulated more in roots compared to shoots. The bioconcentration factor (BCF) of Pb was <1 in shoots at all Pb levels, whereas the BCF was <1 in roots at all but the lowest concentration of Pb. Roots extracted Cd from soil at all treatments. The translocation factor of Cd was larger than that of Pb suggesting that Cd is more mobile than Pb in A. spinosus. Amaranthus spinosus displays a high tolerance for both Pb and Cd with regards to growth and photochemical efficiency, but it is more sensitive to Cd than Pb. Amaranthus spinosus accumulates Pb and Cd primarily in the roots and Cd is more bioconcentrated and translocated in comparison to Pb. This investigation shows that A. spinosus has good potential for phytoremediation of soils contaminated by low levels of Cd and Pb.
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Affiliation(s)
- Yingping Huang
- a College of Hydraulic and Environmental Engineering, China Three Gorges University , Hubei , Yichang P R China
- b Engineering Research Center of Eco-environment in Three Gorges Reservoir Region, Ministry of Education, China Three Gorges University , Hubei , Yichang , P R China
- c Farmland Environment Monitoring Engineering Technology Center in Hubei, China Three Gorges University , Hubei , Yichang , P R China
| | - Ying Xi
- a College of Hydraulic and Environmental Engineering, China Three Gorges University , Hubei , Yichang P R China
- b Engineering Research Center of Eco-environment in Three Gorges Reservoir Region, Ministry of Education, China Three Gorges University , Hubei , Yichang , P R China
- c Farmland Environment Monitoring Engineering Technology Center in Hubei, China Three Gorges University , Hubei , Yichang , P R China
| | - Long Gan
- b Engineering Research Center of Eco-environment in Three Gorges Reservoir Region, Ministry of Education, China Three Gorges University , Hubei , Yichang , P R China
- c Farmland Environment Monitoring Engineering Technology Center in Hubei, China Three Gorges University , Hubei , Yichang , P R China
| | - David Johnson
- a College of Hydraulic and Environmental Engineering, China Three Gorges University , Hubei , Yichang P R China
- b Engineering Research Center of Eco-environment in Three Gorges Reservoir Region, Ministry of Education, China Three Gorges University , Hubei , Yichang , P R China
- c Farmland Environment Monitoring Engineering Technology Center in Hubei, China Three Gorges University , Hubei , Yichang , P R China
| | - Yonghong Wu
- a College of Hydraulic and Environmental Engineering, China Three Gorges University , Hubei , Yichang P R China
- b Engineering Research Center of Eco-environment in Three Gorges Reservoir Region, Ministry of Education, China Three Gorges University , Hubei , Yichang , P R China
| | - Dong Ren
- b Engineering Research Center of Eco-environment in Three Gorges Reservoir Region, Ministry of Education, China Three Gorges University , Hubei , Yichang , P R China
- c Farmland Environment Monitoring Engineering Technology Center in Hubei, China Three Gorges University , Hubei , Yichang , P R China
| | - Huigang Liu
- b Engineering Research Center of Eco-environment in Three Gorges Reservoir Region, Ministry of Education, China Three Gorges University , Hubei , Yichang , P R China
- c Farmland Environment Monitoring Engineering Technology Center in Hubei, China Three Gorges University , Hubei , Yichang , P R China
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