Effects of microcystin-LR, linear alkylbenzene sulfonate and their mixture on lettuce (Lactuca sativa L.) seeds and seedlings
文献类型：期刊论文
| 作者 | Wang, Zhi1,2; Xiao, Bangding1; Song, Lirong1; Wu, Xingqiang1,3; Zhang, Junqian1,2; Wang, Chunbo1 |
| 刊名 | ECOTOXICOLOGY
 |
| 出版日期 | 2011-06-01 |
| 卷号 | 20期号:4页码:803-814 |
| 关键词 | Cyanotoxin Anionic surfactant Lettuce (Lactuca sativa L.) Combined toxicity Antioxidant defense system Health risks |
| ISSN号 | 0963-9292 |
| 通讯作者 | Xiao, BD, Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China ; bdxiao@ihb.ac.cn |
| 中文摘要 | Microcystin-LR (MCLR) and linear alkylbenzene sulfonate (LAS) are present widely in aquatic and terrestrial ecosystems, but their combined ecotoxicological risk is unknown. This study investigated the toxic effects of MCLR, LAS and their mixture on lettuce (Lactuca sativa L.) and evaluated MCLR accumulation level in lettuce with or without LAS. The changes in seed germination and shoot/root growth, responses of the antioxidative defense system, and the accumulation of MCLR in lettuce were tested to evaluate the single and combined toxic effect of MCLR and LAS in well-controlled conditions. The results showed that seedling growth (except for root elongation and leaf weight) was more sensitive to toxicant exposure than seed germination. For seedling leaves, lipid peroxidation was not observed when the antioxidative defense system (including superoxide dismutase, catalase and glutathione) was activated to relieve the adverse effects of oxidative stress via different pathways. Our results also confirmed that the interaction between MCLR and LAS was synergistic. Both toxicants in combination not only significantly inhibited seedling growth, but also increased the activities of superoxide dismutase and catalase, as well as the contents of glutathione. Furthermore, LAS dramatically enhanced the accumulation of MCLR in the plant, thus leading to a reduction in quality and yield and posing greater potential risk to humans via consumption of these edible plants. |
| 英文摘要 | Microcystin-LR (MCLR) and linear alkylbenzene sulfonate (LAS) are present widely in aquatic and terrestrial ecosystems, but their combined ecotoxicological risk is unknown. This study investigated the toxic effects of MCLR, LAS and their mixture on lettuce (Lactuca sativa L.) and evaluated MCLR accumulation level in lettuce with or without LAS. The changes in seed germination and shoot/root growth, responses of the antioxidative defense system, and the accumulation of MCLR in lettuce were tested to evaluate the single and combined toxic effect of MCLR and LAS in well-controlled conditions. The results showed that seedling growth (except for root elongation and leaf weight) was more sensitive to toxicant exposure than seed germination. For seedling leaves, lipid peroxidation was not observed when the antioxidative defense system (including superoxide dismutase, catalase and glutathione) was activated to relieve the adverse effects of oxidative stress via different pathways. Our results also confirmed that the interaction between MCLR and LAS was synergistic. Both toxicants in combination not only significantly inhibited seedling growth, but also increased the activities of superoxide dismutase and catalase, as well as the contents of glutathione. Furthermore, LAS dramatically enhanced the accumulation of MCLR in the plant, thus leading to a reduction in quality and yield and posing greater potential risk to humans via consumption of these edible plants. |
| WOS标题词 | Science & Technology ; Life Sciences & Biomedicine |
| 学科主题 | Ecology; Environmental Sciences; Toxicology |
| 类目[WOS] | Ecology ; Environmental Sciences ; Toxicology |
| 研究领域[WOS] | Environmental Sciences & Ecology ; Toxicology |
| 关键词[WOS] | OXIDATIVE STRESS ; RISK-ASSESSMENT ; TERRESTRIAL ENVIRONMENT ; CYANOBACTERIAL TOXINS ; SUPEROXIDE-DISMUTASE ; AQUATIC ANIMALS ; ROOT ELONGATION ; CRUDE EXTRACT ; LAKE WATER ; TOXICITY |
| 收录类别 | SCI |
| 资助信息 | National Key Project for Basic Research [2008CB418101]; Special Program for Water Pollution Control in China [2008ZX07102-005]; Science Foundation of NSFC-Yunnan Province [U0833604] |
| 语种 | 英语 |
| WOS记录号 | WOS:000290330100017 |
| 公开日期 | 2011-06-30 |
| 源URL | [http://ir.ihb.ac.cn/handle/342005/15642]  |
| 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, Peoples R China 2.Jiangsu Acad Agr Sci, Inst Agr Resource & Environm Sci, Nanjing 210014, Peoples R China 3.Chinese Acad Sci, NE Inst Geog & Agroecol, Changchun 130012, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Zhi,Xiao, Bangding,Song, Lirong,et al. Effects of microcystin-LR, linear alkylbenzene sulfonate and their mixture on lettuce (Lactuca sativa L.) seeds and seedlings[J]. ECOTOXICOLOGY,2011,20(4):803-814. |
| APA | Wang, Zhi,Xiao, Bangding,Song, Lirong,Wu, Xingqiang,Zhang, Junqian,&Wang, Chunbo.(2011).Effects of microcystin-LR, linear alkylbenzene sulfonate and their mixture on lettuce (Lactuca sativa L.) seeds and seedlings.ECOTOXICOLOGY,20(4),803-814. |
| MLA | Wang, Zhi,et al."Effects of microcystin-LR, linear alkylbenzene sulfonate and their mixture on lettuce (Lactuca sativa L.) seeds and seedlings".ECOTOXICOLOGY 20.4(2011):803-814. |
入库方式： OAI收割
来源：水生生物研究所
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