The combined effects of UV-B radiation and herbicides on photosynthesis, antioxidant enzymes and DNA damage in two bloom-forming cyanobacteria
文献类型：期刊论文
| 作者 | Chen, Lanzhou1; Xie, Mu1; Bi, Yonghong2; Wang, Gaohong2; Deng, Songqiang1; Liu, Yongding2 |
| 刊名 | ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
 |
| 出版日期 | 2012-06-01 |
| 卷号 | 80页码:224-230 |
| 关键词 | Bloom-forming cyanobacteria Herbicides Repair ability Toxicity degree UV-B radiation |
| ISSN号 | 0147-6513 |
| 通讯作者 | Chen, LZ (reprint author), Wuhan Univ, Hubei Key Lab Biomass Resources Chem & Environman, Sch Resource & Environm Sci, Wuhan 430079, Peoples R China. |
| 中文摘要 | 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. |
| 英文摘要 | 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. |
| WOS标题词 | Science & Technology ; Life Sciences & Biomedicine |
| 类目[WOS] | Environmental Sciences ; Toxicology |
| 研究领域[WOS] | Environmental Sciences & Ecology ; Toxicology |
| 关键词[WOS] | SOLAR ULTRAVIOLET-RADIATION ; OXIDATIVE STRESS ; CHLOROPHYLL FLUORESCENCE ; EXOGENOUS ANTIOXIDANTS ; AQUATIC ORGANISMS ; SALINITY STRESS ; ASCORBIC-ACID ; GLYPHOSATE ; OXYGEN ; NOSTOC |
| 收录类别 | SCI |
| 资助信息 | National Major Programs of Water Body Pollution Control[2009ZX07104-005-02, 2008ZX07105-005]; Chinese Natural Science Foundation[30970446] |
| 语种 | 英语 |
| WOS记录号 | WOS:000304337300032 |
| 公开日期 | 2012-09-25 |
| 源URL | [http://ir.ihb.ac.cn/handle/342005/16979]  |
| 专题 | 水生生物研究所_水环境工程研究中心_期刊论文 |
| 作者单位 | 1.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 |
| 推荐引用方式 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,&Liu, Yongding.(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. |
入库方式： OAI收割
来源：水生生物研究所
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