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The combined effects of UV-B radiation and herbicides on photosynthesis, antioxidant enzymes and DNA damage in two bloom-forming cyanobacteria
Chen, Lanzhou1; Xie, Mu1; Bi, Yonghong2; Wang, Gaohong2; Deng, Songqiang1; Liu, Yongding2; Chen, LZ (reprint author), Wuhan Univ, Hubei Key Lab Biomass Resources Chem & Environman, Sch Resource & Environm Sci, Wuhan 430079, Peoples R China.
2012-06-01
Source PublicationECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
ISSN0147-6513
Volume80Pages:224-230
AbstractIn this study, we investigated the combined effects of UV-B irradiation and herbicides (glyphosate, GPS; 2-Methyl-4-chlorophenoxyacetic acid, MCPA-Na; 3-(3,4-dichlorophenyl)-1,1-dimethylurea, DCMU) and the antioxidant (ascorbic acid, ASC) on photosynthesis, antioxidant enzymes and DNA damage in two bloom-forming cyanobacteria, Anabaena sp. and Microcystis viridis. UV-B irradiance increased reactive oxygen species (ROS) production, which decreased chlorophyll a fluorescence yield, pigment content and superoxide dismutase (SOD) activity, and increased malondialdehyde (MDA) content and caused serious DNA damage. The degree of these damages was aggravated by the addition of DCMU, GPS and MCPA, and was partially mitigated by the addition of ASC. During the recovery process, the degree and mechanism in restoring DNA damage and photosynthesis inhibition were different by the removal of UV-B and herbicides (DCMU, GPS and MCPA) in both cyanobacteria. These results suggest that the combination of UV-B and exogenous herbicides have detrimental effects on cyanobacterial metabolism through either a ROS-mediated process or by affecting the electron transport chain, and may cause the shifts in the phytoplankton community. (C) 2012 Elsevier Inc. All rights reserved.; In this study, we investigated the combined effects of UV-B irradiation and herbicides (glyphosate, GPS; 2-Methyl-4-chlorophenoxyacetic acid, MCPA-Na; 3-(3,4-dichlorophenyl)-1,1-dimethylurea, DCMU) and the antioxidant (ascorbic acid, ASC) on photosynthesis, antioxidant enzymes and DNA damage in two bloom-forming cyanobacteria, Anabaena sp. and Microcystis viridis. UV-B irradiance increased reactive oxygen species (ROS) production, which decreased chlorophyll a fluorescence yield, pigment content and superoxide dismutase (SOD) activity, and increased malondialdehyde (MDA) content and caused serious DNA damage. The degree of these damages was aggravated by the addition of DCMU, GPS and MCPA, and was partially mitigated by the addition of ASC. During the recovery process, the degree and mechanism in restoring DNA damage and photosynthesis inhibition were different by the removal of UV-B and herbicides (DCMU, GPS and MCPA) in both cyanobacteria. These results suggest that the combination of UV-B and exogenous herbicides have detrimental effects on cyanobacterial metabolism through either a ROS-mediated process or by affecting the electron transport chain, and may cause the shifts in the phytoplankton community. (C) 2012 Elsevier Inc. All rights reserved.
SubtypeArticle
KeywordBloom-forming Cyanobacteria Herbicides Repair Ability Toxicity Degree Uv-b Radiation
Department[Chen, Lanzhou; Xie, Mu; Deng, Songqiang] Wuhan Univ, Hubei Key Lab Biomass Resources Chem & Environman, Sch Resource & Environm Sci, Wuhan 430079, Peoples R China; [Bi, Yonghong; Wang, Gaohong; Liu, Yongding] Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China
DOI10.1016/j.ecoenv.2012.03.007
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
Funding OrganizationNational Major Programs of Water Body Pollution Control[2009ZX07104-005-02, 2008ZX07105-005]; Chinese Natural Science Foundation[30970446] ; National Major Programs of Water Body Pollution Control[2009ZX07104-005-02, 2008ZX07105-005]; Chinese Natural Science Foundation[30970446] ; National Major Programs of Water Body Pollution Control[2009ZX07104-005-02, 2008ZX07105-005]; Chinese Natural Science Foundation[30970446] ; National Major Programs of Water Body Pollution Control[2009ZX07104-005-02, 2008ZX07105-005]; Chinese Natural Science Foundation[30970446]
Indexed BySCI
Language英语
WOS Research AreaEnvironmental Sciences & Ecology ; Toxicology
WOS SubjectEnvironmental Sciences ; Toxicology
WOS IDWOS:000304337300032
WOS KeywordSOLAR ULTRAVIOLET-RADIATION ; OXIDATIVE STRESS ; CHLOROPHYLL FLUORESCENCE ; EXOGENOUS ANTIOXIDANTS ; AQUATIC ORGANISMS ; SALINITY STRESS ; ASCORBIC-ACID ; GLYPHOSATE ; OXYGEN ; NOSTOC
Funding OrganizationNational Major Programs of Water Body Pollution Control[2009ZX07104-005-02, 2008ZX07105-005]; Chinese Natural Science Foundation[30970446] ; National Major Programs of Water Body Pollution Control[2009ZX07104-005-02, 2008ZX07105-005]; Chinese Natural Science Foundation[30970446] ; National Major Programs of Water Body Pollution Control[2009ZX07104-005-02, 2008ZX07105-005]; Chinese Natural Science Foundation[30970446] ; National Major Programs of Water Body Pollution Control[2009ZX07104-005-02, 2008ZX07105-005]; Chinese Natural Science Foundation[30970446]
Citation statistics
Cited Times:15[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/342005/16979
Collection水环境工程研究中心_期刊论文
Corresponding AuthorChen, LZ (reprint author), Wuhan Univ, Hubei Key Lab Biomass Resources Chem & Environman, Sch Resource & Environm Sci, Wuhan 430079, Peoples R China.
Affiliation1.Wuhan Univ, Hubei Key Lab Biomass Resources Chem & Environman, Sch Resource & Environm Sci, Wuhan 430079, 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
Chen, Lanzhou,Xie, Mu,Bi, Yonghong,et al. The combined effects of UV-B radiation and herbicides on photosynthesis, antioxidant enzymes and DNA damage in two bloom-forming cyanobacteria[J]. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY,2012,80:224-230.
APA Chen, Lanzhou.,Xie, Mu.,Bi, Yonghong.,Wang, Gaohong.,Deng, Songqiang.,...&Chen, LZ .(2012).The combined effects of UV-B radiation and herbicides on photosynthesis, antioxidant enzymes and DNA damage in two bloom-forming cyanobacteria.ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY,80,224-230.
MLA Chen, Lanzhou,et al."The combined effects of UV-B radiation and herbicides on photosynthesis, antioxidant enzymes and DNA damage in two bloom-forming cyanobacteria".ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 80(2012):224-230.
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