期刊
CHEMOSPHERE
卷 220, 期 -, 页码 910-920出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.chemosphere.2018.12.211
关键词
Remediation; Cd-hyperaccumulator; Arbuscular mycorrhizal fungi; PBDEs; Surfactant
资金
- National Natural Science Foundation of China [41877350]
- National Key R&D Program of China [2018YFD0800701]
- NSFC-Guangdong Joint Fund of China [U1501233]
- Research Team Project of the Natural Science Foundation of Guangdong Province [2016A030312009]
- Fundamental Research Funds for the Central Universities of China
- Program of Guangdong Science and Technology Department of China [2016B020242005]
Pot experiments were conducted to investigate the effects of a series of beta-cyclodextrin (beta-CD) on phytoremediation of soil co-contaminated with Cd and BDE-209 by amaranth (Amaranthus hypochondriacus L) inoculated with arbuscular mycorrhizal fungus (AMF) - Rhizophagus intraradices. Results showed that the combination of mycorrhizal amaranth and 0.4% beta-CD (RI+beta(0.4)) significantly enhanced Cd concentrations and contents in shoots, total PBDEs concentration in roots, and BDE-209 dissipation in soil. Moreover, the RI+beta(0.4) treatment exerted the highest removal efficiency of both Cd and BDE-209. On the contrary, the xylem area, shoot Cd and BDE-209 concentrations and contents, and removal efficiency of Cd were markedly reduced in mycorrhizal amaranth with 0.8% or 1.2% beta-CD treatments (RI+beta(0.8), RI+beta(1.2)), compared with single inoculation treatment. The well-organized chloroplast and well-defined root anatomical structure were also observed in the treatment of RI+beta(0.4). Positive correlation was found between shoot biomass and chlorophyll concentrations. Shoot Cd or BDE-209 concentrations were positively correlated with xylem areas. In conclusion, mycorrhizal amaranth added with 0.4% beta-CD could be used for the decontamination of soil polluted with mixture of Cd and BDE-209 due to the higher chlorophyll concentration and the larger xylem area. (C) 2019 Elsevier Ltd. All rights reserved.
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