Survival, recovery and microcystin release of Microcystis aeruginosa in cold or dark condition
文献类型：期刊论文
| 作者 | Ding Yi1,2; Gan Nanqin1; Liu Jin1; Zheng Lingling1; Li Lin1; Song Lirong1 |
| 刊名 | CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY
 |
| 出版日期 | 2017-03-01 |
| 卷号 | 35期号:2页码:313-323 |
| ISSN号 | 0254-4059 |
| 关键词 | Microcystis aeruginosa microcystin low temperature darkness Caspase-3-like activity DNA fragmentation |
| DOI | 10.1007/s00343-016-5215-x |
| 英文摘要 | Microcystis often dominates phytoplankton in eutrophic lakes and must survive a long period of cold or dark conditions. However, the survival strategies of Microcystis to withstand cold or dark stress are less well known. In this study, we conducted experiments on the responses of two toxic Microcystis aeruginosa strains (FACHB-905 and FACHB-915) and their microcystin release in conditions of low temperature (15 degrees C or 4 degrees C, with illumination) or darkness, and subsequent recovery in standard conditions (25 degrees C with illumination). On exposure to 15 degrees C, a small decrease in cell viability was observed, but the cell number increased gradually, suggesting that M. aeruginosa FACHB-905 and FACHB-915 cells seem in general tolerant in 15 degrees C. Interestingly, our results show that a higher carotenoid content and microcystin release potentially enhance the fitness of surviving cells at 15 degrees C. M. aeruginosa cells exposed to lower temperature light stress (4 degrees C) did not completely lose viability and retained the ability to reinitiate growth. In darkness, the maximum quantum yield (F-v/F-m) and the maximum electron transport rate (ETRmax) values and cell viability of M. aeruginosa cells gradually decreased with time. During the recovery period, the photosynthetic efficiency of M. aeruginosa reverted to the normal level. Additionally, M. aeruginosa FACHB-905 and FACHB-915 exposed to low temperature had increased caspase-3-like activity and DNA fragmentation, which suggests the occurrence of a type of cell death in M. aeruginosa cells under cold stress similar to programmed cell death. Overall, our findings could confer certain advantages on the Microcystis for surviving cold or dark conditions encountered in the annual cycle, and help explain its repeated occurrence in water blooms in large and shallow lakes. |
| 资助项目 | National Natural Science Foundation of China[31070355] ; National Natural Science Foundation of China[31370418] |
| WOS研究方向 | Marine & Freshwater Biology ; Oceanography |
| 语种 | 英语 |
| 出版者 | SCIENCE PRESS |
| WOS记录号 | WOS:000396021400010 |
| 源URL | [http://202.127.146.157/handle/2RYDP1HH/1402]  |
| 专题 | 中国科学院武汉植物园 |
| 通讯作者 | Li Lin |
| 作者单位 | 1.Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China 2.Chinese Acad Sci, Key Lab Plant Germplasm Enhancement & Special Agr, Wuhan Bot Garden, Wuhan 430074, Peoples R China |
| 推荐引用方式 GB/T 7714 | Ding Yi,Gan Nanqin,Liu Jin,et al. Survival, recovery and microcystin release of Microcystis aeruginosa in cold or dark condition[J]. CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY,2017,35(2):313-323. |
| APA | Ding Yi,Gan Nanqin,Liu Jin,Zheng Lingling,Li Lin,&Song Lirong.(2017).Survival, recovery and microcystin release of Microcystis aeruginosa in cold or dark condition.CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY,35(2),313-323. |
| MLA | Ding Yi,et al."Survival, recovery and microcystin release of Microcystis aeruginosa in cold or dark condition".CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY 35.2(2017):313-323. |
入库方式： OAI收割
来源：武汉植物园
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