IHB OpenIR  > 藻类生物学及应用研究中心  > 期刊论文
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 PublicationNEW ZEALAND JOURNAL OF MARINE AND FRESHWATER RESEARCH
ISSN0028-8330
Volume47Issue:1Pages:51-61
AbstractCalcium 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.
SubtypeArticle
KeywordCalcium 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
DOI10.1080/00288330.2012.741067
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine ; Physical Sciences
Funding OrganizationDoctoral 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 BySCI
Language英语
WOS Research AreaFisheries ; Marine & Freshwater Biology ; Oceanography
WOS SubjectFisheries ; Marine & Freshwater Biology ; Oceanography
WOS IDWOS:000315186200004
WOS KeywordESCHERICHIA-COLI ; GENE-EXPRESSION ; FRESH-WATER ; SYNECHOCOCCUS-ELONGATUS ; OXYGEN EVOLUTION ; BACTERIA ; BLOOMS ; PHYTOPLANKTON ; ACCLIMATION ; ECOSYSTEMS
Funding OrganizationDoctoral 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
Cited Times:15[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://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 AuthorWu, 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.
Affiliation1.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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