Journal
MARINE POLLUTION BULLETIN
Volume 131, Issue -, Pages 416-421Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.marpolbul.2018.04.049
Keywords
Heavy metal; Halophyte; Sesuvium portulacastrum; Phytoremediation; Bioconcentration factor
Funding
- Science and Technology Planning Project of Guangdong Province, China [2015B020235006]
- National Natural Science Foundation of China [41706090, 41573094]
- Public Science and Technology Research Funds Projects of Ocean [201305021]
- Fundamental Research Funds for the Central Universities in Sun Yat-sen University [171gpy96]
- Natural Science Foundation of Guangdong Province [2016A030313188]
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Sesuvium portulacastrum was treated with mixture of copper, zinc, and cadmium for 60 days, with the concentration of each metal ranging from 0 to 20 mg/L. The tolerance of plants and bioaccumulation of heavy metals were then investigated. The height of S. portulacastrum decreased significantly with increasing heavy metal concentrations from 1 to 20 mg/L. The biomass was adversely impacted when the concentration exceeded 5 mg/L. There were no significant differences in malondialdehyde (MDA) concentration among different treatment groups, while the soluble protein content and superoxide dismutase (SOD) activity decreased with increasing heavy metal concentration. However, the BCF values of the three metals were all higher than 10 and the tolerance in root was up to 1000 mg/kg without causing significant growth inhibition, suggesting that S. portulacastrum should be a potential candidate for phytostabilization for the phytoremediation of polymetallic contaminations in coastal environments.
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