Physiological and molecular responses to calcium supplementation in Microcystis aeruginosa (Cyanobacteria)
文献类型：期刊论文
| 作者 | Shi, J-Q1; Wu, Z-X1; Song, L-R2 |
| 刊名 | NEW ZEALAND JOURNAL OF MARINE AND FRESHWATER RESEARCH
 |
| 出版日期 | 2013-03-01 |
| 卷号 | 47期号:1页码:51-61 |
| 关键词 | calcium electron transport rate (ETR) extracellular polysaccharides (EPS) gene expression Microcystis aeruginosa |
| ISSN号 | 0028-8330 |
| 通讯作者 | Wu, ZX (reprint author), Southwest Univ, Key Lab Ecoenvironm Gorges Reservoir Reg 3, Minist Educ,Sch Life Sci, Chongqing Key Lab Plant Ecol & Resources Res Gorg, Chongqing, Peoples R China. |
| 中文摘要 | Calcium is an important element in water bodies that plays a pivotal role in numerous biological processes; however, its effects on bloom-forming cyanobacteria have been studied only rarely. In the present study, the effects of calcium on Microcystis aeruginosa, a major bloom-forming cyanobacterium, were investigated. Significant decreases in growth, chlorophyll a and maximum electron transport rate were shown when calcium was absent, while similar reductions in these parameters were also found at high concentrations of calcium (240 mg/l). The expression of psbA, grpE and recA was up-regulated significantly for 0 and 240 mg/l calcium treatments. The activity of catalase (CAT) also increased remarkably under these two treatments, suggesting that Microcystis suffered from stress under both calcium absence and under high calcium concentrations. Additionally, the polysaccharide synthesis gene, epsL, was up-regulated at high concentrations of calcium. These data suggest that calcium plays an important role in the growth of Microcystis, and that enhancement in polysaccharide synthesis in response to increases in calcium concentration might be responsible for bloom formation. |
| 英文摘要 | Calcium is an important element in water bodies that plays a pivotal role in numerous biological processes; however, its effects on bloom-forming cyanobacteria have been studied only rarely. In the present study, the effects of calcium on Microcystis aeruginosa, a major bloom-forming cyanobacterium, were investigated. Significant decreases in growth, chlorophyll a and maximum electron transport rate were shown when calcium was absent, while similar reductions in these parameters were also found at high concentrations of calcium (240 mg/l). The expression of psbA, grpE and recA was up-regulated significantly for 0 and 240 mg/l calcium treatments. The activity of catalase (CAT) also increased remarkably under these two treatments, suggesting that Microcystis suffered from stress under both calcium absence and under high calcium concentrations. Additionally, the polysaccharide synthesis gene, epsL, was up-regulated at high concentrations of calcium. These data suggest that calcium plays an important role in the growth of Microcystis, and that enhancement in polysaccharide synthesis in response to increases in calcium concentration might be responsible for bloom formation. |
| WOS标题词 | Science & Technology ; Life Sciences & Biomedicine ; Physical Sciences |
| 类目[WOS] | Fisheries ; Marine & Freshwater Biology ; Oceanography |
| 研究领域[WOS] | Fisheries ; Marine & Freshwater Biology ; Oceanography |
| 关键词[WOS] | ESCHERICHIA-COLI ; GENE-EXPRESSION ; FRESH-WATER ; SYNECHOCOCCUS-ELONGATUS ; OXYGEN EVOLUTION ; BACTERIA ; BLOOMS ; PHYTOPLANKTON ; ACCLIMATION ; ECOSYSTEMS |
| 收录类别 | SCI |
| 资助信息 | Doctoral Found Project of China SWU [SWU110065]; National Natural Science Foundation of China [31170372, 30800123] |
| 语种 | 英语 |
| WOS记录号 | WOS:000315186200004 |
| 公开日期 | 2013-10-31 |
| 源URL | [http://ir.ihb.ac.cn/handle/342005/19356]  |
| 专题 | 水生生物研究所_藻类生物学及应用研究中心_期刊论文 |
| 作者单位 | 1.Southwest Univ, Key Lab Ecoenvironm Gorges Reservoir Reg 3, Minist Educ,Sch Life Sci, Chongqing Key Lab Plant Ecol & Resources Res Gorg, Chongqing, Peoples R China 2.Chinese Acad Sci, State Key Lab Freshwater Ecol & Biotechnol, Inst Hydrobiol, Wuhan, Hubei, Peoples R China |
| 推荐引用方式 GB/T 7714 | Shi, J-Q,Wu, Z-X,Song, L-R. Physiological and molecular responses to calcium supplementation in Microcystis aeruginosa (Cyanobacteria)[J]. NEW ZEALAND JOURNAL OF MARINE AND FRESHWATER RESEARCH,2013,47(1):51-61. |
| APA | Shi, J-Q,Wu, Z-X,&Song, L-R.(2013).Physiological and molecular responses to calcium supplementation in Microcystis aeruginosa (Cyanobacteria).NEW ZEALAND JOURNAL OF MARINE AND FRESHWATER RESEARCH,47(1),51-61. |
| MLA | Shi, J-Q,et al."Physiological and molecular responses to calcium supplementation in Microcystis aeruginosa (Cyanobacteria)".NEW ZEALAND JOURNAL OF MARINE AND FRESHWATER RESEARCH 47.1(2013):51-61. |
入库方式： OAI收割
来源：水生生物研究所
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