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Photosynthesis regulates succession of toxic and nontoxic strains in blooms of Microcystis (Cyanobacteria)
Wang, Zhicong; Li, Dunhai; Cao, Xiuyun; Song, Chulei; Zhou, Yiyong
2015
Source PublicationPHYCOLOGIA
ISSN0031-8884
Volume54Issue:6Pages:640-648
AbstractMicrocystis are common cyanobacteria of eutrophic lakes that can form harmful blooms in warm seasons. The genus includes toxic and nontoxic species/strains, and they show competitive succession in natural environments that is not well understood. Here we show the effects of microcystin production on species competitiveness when cultured under different conditions. When phosphate is rich, toxic Microcystis grew faster than nontoxic Microcystis. However, phosphate limitation significantly promoted photosynthesis of nontoxic Microcystis. Under phosphate limitation, toxic Microcystis was more sensitive than nontoxic Microcystis, and the maximum relative electron transport rate (rETR(max)) of nontoxic Microcystis was significantly higher than that of toxic Microcystis. Significantly higher light quantum efficiencies suggested that nontoxic Microcystis was more competitive than toxic Microcystis (P < 0.05) under light limitation. When in high light, the ratio of closed Photosystem II (PSII) to total PSII was higher and more sensitive to light in nontoxic than toxic Microcystis. Intense non-photochemical quenching (qN) was induced by high light for toxic Microcystis, while there was a serious limitation of qN formation leading to photoinhibition in nontoxic strains. Deconvolution of qN composition suggested that lots of qN(s) (slow component of qN) production might be caused by a reversible photoinhibition mechanism for toxic Microcystis. These observations suggest a photosynthetic explanation for bloom succession in which in early stages of the bloom, high phosphate concentration favours the rapid growth of toxic Microcystis. Subsequent bloom formation would lead to the decrease of water transparency and phosphate concentration that then promotes dominance of nontoxic Microcystis.
SubtypeArticle
KeywordBloom Nontoxic Microcystis Photosynthesis Succession Toxic Microcystis
DOI10.2216/15-79.1
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
Indexed BySCI
Funding OrganizationNational Science Foundation of China(41230748 ; National Science Foundation of China(41230748 ; State Key Laboratory of Freshwater Ecology and Biotechnology(2014FBZ01) ; State Key Laboratory of Freshwater Ecology and Biotechnology(2014FBZ01) ; Major Science and Technology Program for Water Pollution Control and Treatment(2012ZX07103003-02) ; Major Science and Technology Program for Water Pollution Control and Treatment(2012ZX07103003-02) ; 31300391 ; 31300391 ; 41273089) ; 41273089) ; National Science Foundation of China(41230748 ; National Science Foundation of China(41230748 ; State Key Laboratory of Freshwater Ecology and Biotechnology(2014FBZ01) ; State Key Laboratory of Freshwater Ecology and Biotechnology(2014FBZ01) ; Major Science and Technology Program for Water Pollution Control and Treatment(2012ZX07103003-02) ; Major Science and Technology Program for Water Pollution Control and Treatment(2012ZX07103003-02) ; 31300391 ; 31300391 ; 41273089) ; 41273089)
Language英语
WOS Research AreaPlant Sciences ; Marine & Freshwater Biology
WOS SubjectPlant Sciences ; Marine & Freshwater Biology
WOS KeywordCHLOROPHYLL FLUORESCENCE ; LAKE TAIHU ; HIGHER-PLANTS ; AERUGINOSA ; CHINA ; LIGHT ; PHOSPHORUS ; PCC-7806 ; PCC7806 ; STRESS
WOS IDWOS:000365995200010
Funding OrganizationNational Science Foundation of China(41230748 ; National Science Foundation of China(41230748 ; State Key Laboratory of Freshwater Ecology and Biotechnology(2014FBZ01) ; State Key Laboratory of Freshwater Ecology and Biotechnology(2014FBZ01) ; Major Science and Technology Program for Water Pollution Control and Treatment(2012ZX07103003-02) ; Major Science and Technology Program for Water Pollution Control and Treatment(2012ZX07103003-02) ; 31300391 ; 31300391 ; 41273089) ; 41273089) ; National Science Foundation of China(41230748 ; National Science Foundation of China(41230748 ; State Key Laboratory of Freshwater Ecology and Biotechnology(2014FBZ01) ; State Key Laboratory of Freshwater Ecology and Biotechnology(2014FBZ01) ; Major Science and Technology Program for Water Pollution Control and Treatment(2012ZX07103003-02) ; Major Science and Technology Program for Water Pollution Control and Treatment(2012ZX07103003-02) ; 31300391 ; 31300391 ; 41273089) ; 41273089)
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/342005/27457
Collection水环境工程研究中心
AffiliationChinese Acad Sci, Inst Hydrobiol, Key Lab Algal Biol, Wuhan 430072, Peoples R China
Recommended Citation
GB/T 7714
Wang, Zhicong,Li, Dunhai,Cao, Xiuyun,et al. Photosynthesis regulates succession of toxic and nontoxic strains in blooms of Microcystis (Cyanobacteria)[J]. PHYCOLOGIA,2015,54(6):640-648.
APA Wang, Zhicong,Li, Dunhai,Cao, Xiuyun,Song, Chulei,&Zhou, Yiyong.(2015).Photosynthesis regulates succession of toxic and nontoxic strains in blooms of Microcystis (Cyanobacteria).PHYCOLOGIA,54(6),640-648.
MLA Wang, Zhicong,et al."Photosynthesis regulates succession of toxic and nontoxic strains in blooms of Microcystis (Cyanobacteria)".PHYCOLOGIA 54.6(2015):640-648.
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