| Physiological and molecular responses to calcium supplementation in Microcystis aeruginosa (Cyanobacteria) | |
| Shi, J-Q1; Wu, Z-X1; Song, L-R2; 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. | |
| 2013-03-01 | |
| Source Publication | NEW ZEALAND JOURNAL OF MARINE AND FRESHWATER RESEARCH
 |
| ISSN | 0028-8330 |
| Volume | 47Issue:1Pages:51-61 |
| Abstract | 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.; 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. |
| Subtype | Article |
| Keyword | Calcium Electron Transport Rate (Etr) Extracellular Polysaccharides (Eps) Gene Expression Microcystis Aeruginosa |
| Department | [Shi, J-Q ; Wu, Z-X] 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 ; [Song, L-R] Chinese Acad Sci, State Key Lab Freshwater Ecol & Biotechnol, Inst Hydrobiol, Wuhan, Hubei, Peoples R China |
| DOI | 10.1080/00288330.2012.741067 |
| WOS Headings | Science & Technology ; Life Sciences & Biomedicine ; Physical Sciences |
| Funding Organization | Doctoral Found Project of China SWU [SWU110065]; National Natural Science Foundation of China [31170372, 30800123] ; Doctoral Found Project of China SWU [SWU110065]; National Natural Science Foundation of China [31170372, 30800123] ; Doctoral Found Project of China SWU [SWU110065]; National Natural Science Foundation of China [31170372, 30800123] ; Doctoral Found Project of China SWU [SWU110065]; National Natural Science Foundation of China [31170372, 30800123] |
| Indexed By | SCI |
| Language | 英语 |
| WOS Research Area | Fisheries ; Marine & Freshwater Biology ; Oceanography |
| WOS Subject | Fisheries ; Marine & Freshwater Biology ; Oceanography |
| WOS ID | WOS:000315186200004 |
| WOS Keyword | ESCHERICHIA-COLI ; GENE-EXPRESSION ; FRESH-WATER ; SYNECHOCOCCUS-ELONGATUS ; OXYGEN EVOLUTION ; BACTERIA ; BLOOMS ; PHYTOPLANKTON ; ACCLIMATION ; ECOSYSTEMS |
| Funding Organization | Doctoral Found Project of China SWU [SWU110065]; National Natural Science Foundation of China [31170372, 30800123] ; Doctoral Found Project of China SWU [SWU110065]; National Natural Science Foundation of China [31170372, 30800123] ; Doctoral Found Project of China SWU [SWU110065]; National Natural Science Foundation of China [31170372, 30800123] ; Doctoral Found Project of China SWU [SWU110065]; National Natural Science Foundation of China [31170372, 30800123] |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.ihb.ac.cn/handle/342005/19356 |
| Collection | 藻类生物学及应用研究中心_期刊论文 |
| Corresponding Author | 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. |
| Affiliation | 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 |
| Recommended Citation GB/T 7714 | Shi, J-Q,Wu, Z-X,Song, L-R,et al. 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,&Wu, ZX .(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. |
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