Response of Microcystis to copper stress - Do phenotypes of Microcystis make a difference in stress tolerance?
文献类型：期刊论文
| 作者 | Wu, Zhong-xing; Gan, Nan-qin; Huang, Qun; Song, Li-rong |
| 刊名 | ENVIRONMENTAL POLLUTION
 |
| 出版日期 | 2007-05-01 |
| 卷号 | 147期号:2页码:324-330 |
| 关键词 | copper sulfate unicellular and colonial Microcystis aeruginosa F-v/F-m maximum electron transport rate (ETRmax) superoxide dismutase (SOD) catalase (CAT) flow cytometry (FCM) |
| ISSN号 | 0269-7491 |
| 通讯作者 | Song, LR, Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol, Wuhan 430072, Hubei, Peoples R China |
| 中文摘要 | To elucidate the role of phenotype in stress-tolerant bloom-forming cyanobacterium Microcystis, two phenotypes of M. aeruginosa-unicellular and colonial strains were selected to investigate how they responded to copper stress. Flow cytometry (FCM) examination indicated that the percents of viable cells in unicellular and colonial Microcystis were 1.92-2.83% and 72.3-97.51%, respectively, under 0.25 mg l(-1) copper sulfate treatment for 24 h. Upon exposure to 0.25 mg l(-1) copper sulfate, the activities of antioxidative enzyme, such as superoxide dismutase (SOD) and catalase (CAT), were significantly increased in colonial Microcystis compared to unicellular Microcystis. Meanwhile, the values of the photosynthetic parameters (F-v/F-m, ETRmax and oxygen evolution rate) decreased more rapidly in unicellular Microcystis than in colonial Microcystis. The results indicate that colonial Microcystis has a higher endurance to copper than unicellular Microcystis. This suggests that the efficient treatment concentration of copper sulfate as algaecides will be dependent on the phenotypes of Microcystis. (C) 2006 Elsevier Ltd. All rights reserved. |
| 英文摘要 | To elucidate the role of phenotype in stress-tolerant bloom-forming cyanobacterium Microcystis, two phenotypes of M. aeruginosa-unicellular and colonial strains were selected to investigate how they responded to copper stress. Flow cytometry (FCM) examination indicated that the percents of viable cells in unicellular and colonial Microcystis were 1.92-2.83% and 72.3-97.51%, respectively, under 0.25 mg l(-1) copper sulfate treatment for 24 h. Upon exposure to 0.25 mg l(-1) copper sulfate, the activities of antioxidative enzyme, such as superoxide dismutase (SOD) and catalase (CAT), were significantly increased in colonial Microcystis compared to unicellular Microcystis. Meanwhile, the values of the photosynthetic parameters (F-v/F-m, ETRmax and oxygen evolution rate) decreased more rapidly in unicellular Microcystis than in colonial Microcystis. The results indicate that colonial Microcystis has a higher endurance to copper than unicellular Microcystis. This suggests that the efficient treatment concentration of copper sulfate as algaecides will be dependent on the phenotypes of Microcystis. (C) 2006 Elsevier Ltd. All rights reserved. |
| WOS标题词 | Science & Technology ; Life Sciences & Biomedicine |
| 学科主题 | Environmental Sciences |
| 类目[WOS] | Environmental Sciences |
| 研究领域[WOS] | Environmental Sciences & Ecology |
| 关键词[WOS] | PHOTOSYSTEM-II ; CHLOROPHYLL FLUORESCENCE ; SUPEROXIDE-DISMUTASE ; CUSO4 TREATMENT ; FLOW-CYTOMETRY ; FUCUS-SERRATUS ; CYANOBACTERIA ; AERUGINOSA ; CU ; PHOTOSYNTHESIS |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000246457700004 |
| 公开日期 | 2010-10-13 |
| 源URL | [http://ir.ihb.ac.cn/handle/152342/8594]  |
| 专题 | 水生生物研究所_中科院水生所知识产出（2009年前）_期刊论文 |
| 作者单位 | 1.Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol, Wuhan 430072, Hubei, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100864, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wu, Zhong-xing,Gan, Nan-qin,Huang, Qun,et al. Response of Microcystis to copper stress - Do phenotypes of Microcystis make a difference in stress tolerance?[J]. ENVIRONMENTAL POLLUTION,2007,147(2):324-330. |
| APA | Wu, Zhong-xing,Gan, Nan-qin,Huang, Qun,&Song, Li-rong.(2007).Response of Microcystis to copper stress - Do phenotypes of Microcystis make a difference in stress tolerance?.ENVIRONMENTAL POLLUTION,147(2),324-330. |
| MLA | Wu, Zhong-xing,et al."Response of Microcystis to copper stress - Do phenotypes of Microcystis make a difference in stress tolerance?".ENVIRONMENTAL POLLUTION 147.2(2007):324-330. |
入库方式： OAI收割
来源：水生生物研究所
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