Physiological comparison between colonial and unicellular forms of Microcystis aeruginosa Kutz. (Cyanobacteria)
文献类型：期刊论文
| 作者 | Wu, Zhong-Xing; Song, Li-Rong |
| 刊名 | PHYCOLOGIA
 |
| 出版日期 | 2008 |
| 卷号 | 47期号:1页码:98-104 |
| 关键词 | dissolved inorganic carbon (DIC) electron transport rate (ETR) photosynthetic rate unicellular and colonial Microcystis aeruginosa |
| ISSN号 | 0031-8884 |
| 通讯作者 | Song, LR, Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China |
| 中文摘要 | In order to gain insight into the bloom sustainment of colonial Microcystis aeruginosa Katz., physiological characterizations were undertaken in this study. Compared with unicellular Microcystis, colonial Microcystis phenotypes exhibited a higher maximum photosynthetic rate (Pm), a higher maximum electron transfer rate (ETRmax), higher phycocyanin content, and a higher affinity for inorganic carbon (K-0.5 DIC <= 8.4 +/- 0.7 mu M) during the growth period monitored in this study. This suggests that photosynthetic efficiency is a dominant physiological adaptation found in colonial Microcystis, thus promoting bloom sustainment. In addition, the high content of soluble and total carbohydrates in colonial Microcystis suggests that this phenotype may possess a higher ability to tolerate enhanced stress conditions when compared to unicellular (noncolonial) phenotypes. Therefore, high photosynthetic activities and high tolerance abilities may explain the bloom sustainment of colonial Microcystis in eutrophic lakes. |
| 英文摘要 | In order to gain insight into the bloom sustainment of colonial Microcystis aeruginosa Katz., physiological characterizations were undertaken in this study. Compared with unicellular Microcystis, colonial Microcystis phenotypes exhibited a higher maximum photosynthetic rate (Pm), a higher maximum electron transfer rate (ETRmax), higher phycocyanin content, and a higher affinity for inorganic carbon (K-0.5 DIC <= 8.4 +/- 0.7 mu M) during the growth period monitored in this study. This suggests that photosynthetic efficiency is a dominant physiological adaptation found in colonial Microcystis, thus promoting bloom sustainment. In addition, the high content of soluble and total carbohydrates in colonial Microcystis suggests that this phenotype may possess a higher ability to tolerate enhanced stress conditions when compared to unicellular (noncolonial) phenotypes. Therefore, high photosynthetic activities and high tolerance abilities may explain the bloom sustainment of colonial Microcystis in eutrophic lakes. |
| WOS标题词 | Science & Technology ; Life Sciences & Biomedicine |
| 学科主题 | Plant Sciences; Marine & Freshwater Biology |
| 类目[WOS] | Plant Sciences ; Marine & Freshwater Biology |
| 研究领域[WOS] | Plant Sciences ; Marine & Freshwater Biology |
| 关键词[WOS] | DISSOLVED INORGANIC CARBON ; ELECTRON-TRANSPORT ; LIGHT-INTENSITY ; DOMINANCE ; PHOTOSYNTHESIS ; PHYTOPLANKTON ; DEGRADATION ; DEPENDENCE ; BLOOMS ; GROWTH |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000252288800010 |
| 公开日期 | 2010-10-13 |
| 源URL | [http://ir.ihb.ac.cn/handle/152342/8308]  |
| 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 | 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 | Wu, Zhong-Xing,Song, Li-Rong. Physiological comparison between colonial and unicellular forms of Microcystis aeruginosa Kutz. (Cyanobacteria)[J]. PHYCOLOGIA,2008,47(1):98-104. |
| APA | Wu, Zhong-Xing,&Song, Li-Rong.(2008).Physiological comparison between colonial and unicellular forms of Microcystis aeruginosa Kutz. (Cyanobacteria).PHYCOLOGIA,47(1),98-104. |
| MLA | Wu, Zhong-Xing,et al."Physiological comparison between colonial and unicellular forms of Microcystis aeruginosa Kutz. (Cyanobacteria)".PHYCOLOGIA 47.1(2008):98-104. |
入库方式： OAI收割
来源：水生生物研究所
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