Responses and toxin bioaccumulation in duckweed (Lemna minor) under microcystin-LR, linear alkybenzene sulfonate and their joint stress
文献类型：期刊论文
| 作者 | Wang, Zhi1,2; Xiao, Bangding1; Song, Lirong1; Wang, Chunbo1; Zhang, Junqian1,2 |
| 刊名 | JOURNAL OF HAZARDOUS MATERIALS
 |
| 出版日期 | 2012-08-30 |
| 卷号 | 229期号:-页码:137-144 |
| 关键词 | Microcystins Linear alkylbenzene sulfonate Accumulation Superoxide dismutase Aquatic plants |
| ISSN号 | 0304-3894 |
| 通讯作者 | Xiao, BD (reprint author), Chinese Acad Sci, Inst Hydrobiol, 7th Donghu S Rd, Wuhan 430072, Hubei, Peoples R China. |
| 中文摘要 | Microcystin-LR (MCLR) and linear alkylbenzene sulfonate (LAS) are commonly found in eutrophic lakes due to toxic cyanobacterial blooms and exogenous organic compounds pollution. However, the ecotoxicological risk of their combination in the aquatic environment is unknown. This study investigated the effects of MCLR. LAS and their mixture on duckweed (Lemna minor) growth and physiological responses. MCLR accumulation in duckweed, with or without LAS, was also examined. Growth of duckweed and chlorophyll-a contents were significantly reduced after 8d exposure to high concentrations of MCLR (>= 3 mu g/ml), LAS (>= 20 mu g/ml) and their mixture (>= 3 + 10 mu g/ml). After 2 d of exposure, superoxide dismutase activity and glutathione content in duckweed increased with increasing concentrations of MCLR, LAS and their mixture, with a significant difference observable after 8 d of exposure. When MCLR and LAS concentrations were lower (<= 0.1 + 1 mu g/ml), the interaction of them is synergistic, but when the concentrations were higher, the synergy was weak. MC accumulation was much higher at 2 d than at 8 d when duckweed was exposed to lower concentrations of MCLR (<= 3 mu g/ml) or MCLR-LAS (<= 3 + 10 mu g/ml). Furthermore. LAS significantly enhanced the accumulation of MCLR in duckweed, even with LAS concentrations as low as 0.3 mu g/ml (environmental concentration), indicating that greater negative ecological risks and higher MCLR phytoremediation potentials of duckweed might occur in MCLR-LAS-concomitant water. (C) 2012 Elsevier B.V. All rights reserved. |
| 英文摘要 | Microcystin-LR (MCLR) and linear alkylbenzene sulfonate (LAS) are commonly found in eutrophic lakes due to toxic cyanobacterial blooms and exogenous organic compounds pollution. However, the ecotoxicological risk of their combination in the aquatic environment is unknown. This study investigated the effects of MCLR. LAS and their mixture on duckweed (Lemna minor) growth and physiological responses. MCLR accumulation in duckweed, with or without LAS, was also examined. Growth of duckweed and chlorophyll-a contents were significantly reduced after 8d exposure to high concentrations of MCLR (>= 3 mu g/ml), LAS (>= 20 mu g/ml) and their mixture (>= 3 + 10 mu g/ml). After 2 d of exposure, superoxide dismutase activity and glutathione content in duckweed increased with increasing concentrations of MCLR, LAS and their mixture, with a significant difference observable after 8 d of exposure. When MCLR and LAS concentrations were lower (<= 0.1 + 1 mu g/ml), the interaction of them is synergistic, but when the concentrations were higher, the synergy was weak. MC accumulation was much higher at 2 d than at 8 d when duckweed was exposed to lower concentrations of MCLR (<= 3 mu g/ml) or MCLR-LAS (<= 3 + 10 mu g/ml). Furthermore. LAS significantly enhanced the accumulation of MCLR in duckweed, even with LAS concentrations as low as 0.3 mu g/ml (environmental concentration), indicating that greater negative ecological risks and higher MCLR phytoremediation potentials of duckweed might occur in MCLR-LAS-concomitant water. (C) 2012 Elsevier B.V. All rights reserved. |
| WOS标题词 | Science & Technology ; Technology ; Life Sciences & Biomedicine |
| 类目[WOS] | Engineering, Environmental ; Engineering, Civil ; Environmental Sciences |
| 研究领域[WOS] | Engineering ; Environmental Sciences & Ecology |
| 关键词[WOS] | RAPE BRASSICA-NAPUS ; RICE ORYZA-SATIVA ; ALKYLBENZENE SULFONATE ; CYANOBACTERIAL TOXIN ; RISK-ASSESSMENT ; OXIDATIVE STRESS ; SUPEROXIDE-DISMUTASE ; AQUATIC MACROPHYTES ; MASS-SPECTROMETRY ; CRUDE EXTRACT |
| 收录类别 | SCI |
| 资助信息 | Science Foundation of NSFC-Yunnan Province [U0833604]; National Key Project for Basic Research [2008CB418101]; Special Program for Water Pollution Control in China [2012ZX07102-005] |
| 语种 | 英语 |
| WOS记录号 | WOS:000307130800018 |
| 公开日期 | 2013-01-09 |
| 源URL | [http://ir.ihb.ac.cn/handle/342005/17260]  |
| 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.Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Hubei, Peoples R China 2.Jiangsu Acad Agr Sci, Inst Agr Resource & Environm Sci, Nanjing 210014, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Zhi,Xiao, Bangding,Song, Lirong,et al. Responses and toxin bioaccumulation in duckweed (Lemna minor) under microcystin-LR, linear alkybenzene sulfonate and their joint stress[J]. JOURNAL OF HAZARDOUS MATERIALS,2012,229(-):137-144. |
| APA | Wang, Zhi,Xiao, Bangding,Song, Lirong,Wang, Chunbo,&Zhang, Junqian.(2012).Responses and toxin bioaccumulation in duckweed (Lemna minor) under microcystin-LR, linear alkybenzene sulfonate and their joint stress.JOURNAL OF HAZARDOUS MATERIALS,229(-),137-144. |
| MLA | Wang, Zhi,et al."Responses and toxin bioaccumulation in duckweed (Lemna minor) under microcystin-LR, linear alkybenzene sulfonate and their joint stress".JOURNAL OF HAZARDOUS MATERIALS 229.-(2012):137-144. |
入库方式： OAI收割
来源：水生生物研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。