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AM fungi increase uptake of Cd and BDE-209 and activities of dismutase and catalase in amaranth (Amaranthus hypochondriacus L.) in two contaminants spiked soil.
- Source :
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Ecotoxicology and environmental safety [Ecotoxicol Environ Saf] 2020 Jun 01; Vol. 195, pp. 110485. Date of Electronic Publication: 2020 Mar 20. - Publication Year :
- 2020
-
Abstract
- Soil co-contaminated with cadmium (Cd) and decabromodiphenyl ether (BDE-209) is a widespread environmental problem, especially in electronic waste contaminated surroundings. Accumulation of Cd and BDE-209 in crops has possibly harmful effects on local human health. In order to assess the potential of arbuscular mycorrhizal (AM) fungi and amaranth (Amaranthus hypochondriacus L.) in remediation of soil co-contaminated with Cd and BDE-209, pot trials were performed to investigate interactive effects of AM fungi, Cd and BDE-209 on growth of amaranth, uptake of Cd and BDE-209, distribution of chemical forms of Cd and activities of antioxidant enzymes in shoots and dissipation of BDE-209 in soil. The present results showed that shoot biomass of non-mycorrhizal plants was significantly inhibited by increasing of Cd addition (5-15 mg kg <superscript>-1</superscript> ), but were only slightly declined with BDE-209 addition (5 mg kg <superscript>-1</superscript> ). The interaction of Cd and BDE-209 reduced the proportions of ethanol- and d-H <subscript>2</subscript> O-extractable Cd in shoots, consequently alleviated Cd toxicity to plants and enhanced root uptake of Cd and BDE-209. Inoculation of AM fungi resulted in significantly greater shoot biomass as well as higher concentrations of Cd and BDE-209 compared with non-mycorrhizal treatment. Moreover, AM fungi played a beneficial role in relieving oxidative stress on amaranth by increasing the activities of dismutase (SOD) and catalase (CAT) in shoots and significantly improved the dissipation of BDE-209 in soil. The present study suggested that combination of AM fungi and amaranth may be a potential option for remediation of Cd and BDE-209 co-contaminated soils.<br />Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.<br /> (Copyright © 2020 Elsevier Inc. All rights reserved.)
- Subjects :
- Amaranthus drug effects
Amaranthus enzymology
Biodegradation, Environmental
Biomass
Cadmium toxicity
Catalase metabolism
Halogenated Diphenyl Ethers toxicity
Plant Shoots drug effects
Plant Shoots enzymology
Plant Shoots metabolism
Soil
Soil Pollutants toxicity
Superoxide Dismutase metabolism
Amaranthus metabolism
Cadmium pharmacokinetics
Halogenated Diphenyl Ethers pharmacokinetics
Mycorrhizae
Soil Pollutants pharmacokinetics
Subjects
Details
- Language :
- English
- ISSN :
- 1090-2414
- Volume :
- 195
- Database :
- MEDLINE
- Journal :
- Ecotoxicology and environmental safety
- Publication Type :
- Academic Journal
- Accession number :
- 32203776
- Full Text :
- https://doi.org/10.1016/j.ecoenv.2020.110485