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Combined toxic effects and mechanisms of microsystin-LR and copper on Vallisneria Natans (Lour.) Hara seedlings
Wang, Zhi1; Zhang, Jungian2; Li, Enhua1; Zhang, Liang1; Wang, Xuelei1; Song, Lirong2
2017-04-15
Source PublicationJOURNAL OF HAZARDOUS MATERIALS
ISSN0304-3894
Volume328Pages:108-116
AbstractMicrocystin-LR (MCLR) and copper are commonly found in eutrophic water bodies because of eutrophic run-offs, cyanobacterial blooms, and copper algicide applications. However, the ecotoxicological risk of their combination remains unknown. This study investigated the effect of MCLR, Cu, and their mixture on the growth and physiological responses of Vallisneria natans. Results showed that the combined toxicity of them was concentration dependent. Synergistic effects were elicited at low concentrations of MCLR and Cu exposure (<= 0.25 +0.64 mg/L). Additive or antagonistic effects were induced at higher concentrations. Single and combined exposures could induce oxidative stress, such as increased superoxide anion radical levels. To cope with oxidative stress, V. natans could activate their antioxidant defense systems, such as enhanced superoxide dismutase production and changes in peroxidase activities. Exposure to combined MCLR and Cu (even only with 0.005 + 0.041 mg/L) adversely affected their antioxidant defense systems. As a consequence, malondialdehyde levels significantly increased. The interaction of MCLR and Cu could also significantly increase the bioaccumulations of MCLR and Cu. This increase could be accounted for their synergistic toxic effects on V. natans. Our results suggested that the exacerbated ecological hazard of MCLR and Cu with environmental concentrations may harm aquatic ecosystems. (C) 2017 Elsevier B.V. All rights reserved.
SubtypeArticle
KeywordMicrocystins Metals Joint Toxicity Bioaccumulation Superoxide Anion Radical
DOI10.1016/j.jhazmat.2016.12.059
WOS HeadingsScience & Technology ; Technology ; Life Sciences & Biomedicine
Indexed BySCI
Funding OrganizationNational Natural Science Foundation of China(41601545) ; National Natural Science Foundation of China(41601545) ; State Key Laboratory of Freshwater Ecology and Biotechnology(2014FB13) ; State Key Laboratory of Freshwater Ecology and Biotechnology(2014FB13) ; Key Project of Hubei Province Natu-ral Science Foundation(2015CFA132) ; Key Project of Hubei Province Natu-ral Science Foundation(2015CFA132) ; national key research and development plan(2016FYD0800504) ; national key research and development plan(2016FYD0800504) ; National Natural Science Foundation of China(41601545) ; National Natural Science Foundation of China(41601545) ; State Key Laboratory of Freshwater Ecology and Biotechnology(2014FB13) ; State Key Laboratory of Freshwater Ecology and Biotechnology(2014FB13) ; Key Project of Hubei Province Natu-ral Science Foundation(2015CFA132) ; Key Project of Hubei Province Natu-ral Science Foundation(2015CFA132) ; national key research and development plan(2016FYD0800504) ; national key research and development plan(2016FYD0800504)
Language英语
WOS Research AreaEngineering ; Environmental Sciences & Ecology
WOS SubjectEngineering, Environmental ; Engineering, Civil ; Environmental Sciences
WOS KeywordDUCKWEED LEMNA-MINOR ; MICROCYSTIN-LR ; PHYSIOLOGICAL-PARAMETERS ; HYDRILLA-VERTICILLATA ; SUPEROXIDE-DISMUTASE ; MASS-SPECTROMETRY ; OXIDATIVE STRESS ; WATER ; LAKE ; BIOACCUMULATION
WOS IDWOS:000395228300013
Funding OrganizationNational Natural Science Foundation of China(41601545) ; National Natural Science Foundation of China(41601545) ; State Key Laboratory of Freshwater Ecology and Biotechnology(2014FB13) ; State Key Laboratory of Freshwater Ecology and Biotechnology(2014FB13) ; Key Project of Hubei Province Natu-ral Science Foundation(2015CFA132) ; Key Project of Hubei Province Natu-ral Science Foundation(2015CFA132) ; national key research and development plan(2016FYD0800504) ; national key research and development plan(2016FYD0800504) ; National Natural Science Foundation of China(41601545) ; National Natural Science Foundation of China(41601545) ; State Key Laboratory of Freshwater Ecology and Biotechnology(2014FB13) ; State Key Laboratory of Freshwater Ecology and Biotechnology(2014FB13) ; Key Project of Hubei Province Natu-ral Science Foundation(2015CFA132) ; Key Project of Hubei Province Natu-ral Science Foundation(2015CFA132) ; national key research and development plan(2016FYD0800504) ; national key research and development plan(2016FYD0800504)
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/342005/29035
Collection藻类生物学及应用研究中心
Affiliation1.Chinese Acad Sci, Inst Geodesy & Geophys, Key Lab Environm & Disaster Monitoring & Evaluat, Wuhan 430077, Hubei, Peoples R China
2.Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China
Recommended Citation
GB/T 7714
Wang, Zhi,Zhang, Jungian,Li, Enhua,et al. Combined toxic effects and mechanisms of microsystin-LR and copper on Vallisneria Natans (Lour.) Hara seedlings[J]. JOURNAL OF HAZARDOUS MATERIALS,2017,328:108-116.
APA Wang, Zhi,Zhang, Jungian,Li, Enhua,Zhang, Liang,Wang, Xuelei,&Song, Lirong.(2017).Combined toxic effects and mechanisms of microsystin-LR and copper on Vallisneria Natans (Lour.) Hara seedlings.JOURNAL OF HAZARDOUS MATERIALS,328,108-116.
MLA Wang, Zhi,et al."Combined toxic effects and mechanisms of microsystin-LR and copper on Vallisneria Natans (Lour.) Hara seedlings".JOURNAL OF HAZARDOUS MATERIALS 328(2017):108-116.
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