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Photosynthetic adaptation mechanism of Microcystis (Cyanophyceae) related to changes of colony size in a eutrophic lake
Wang, Zhicong; Li, Dunhai; Cao, Xiuyun; Song, Chunlei; Zhou, Yiyong; Zhou, YY (reprint author), Chinese Acad Sci, State Key Lab Freshwater Ecol & Biotechnol, Inst Hydrobiol, Wuhan 430072, Peoples R China.
2014
Source PublicationPHYCOLOGIA
ISSN0031-8884
Volume53Issue:6Pages:552-560
AbstractMicrocystis blooms occur frequently in eutrophic lakes, and they are composed of many different-sized colonies. Many studies have addressed the competitive advantage of colony size, e.g. colony buoyancy regulation mechanism, low nutrient stress tolerance, low irradiance stress; however, studies are lacking for growth strategies of different-sized Microcystis colonies responding to photosynthetic regulation. This study compared photosynthetic activities and photosynthetic pigment composition of different-sized Microcystis. The results showed that the photosynthetic activity caused a V-shaped curve as colony size increased, i.e. medium-sized colonies (125-400 mu m) had the lowest photosynthetic activity. The higher photosynthetic activity of small colonies (<125 mu m) was probably caused by the higher light-harvesting efficiency of phycobilisomes (PBS) and a relatively low nonphotochemical quenching (qN). The high photosynthesis of large colonies (>400 mu m) was attributed to the high efficiency of energy transition of the electron transport chains in photosystem II. Also, large colonies tolerated high irradiance stress because of their high qN, which was related to high cell quotas of PBS. All these results suggested that both small and large colonies had their own ecological adaptation strategies when they were suspended at different water layers, providing an explanation for how Microcystis survives adverse natural conditions, grows rapidly and forms serious surface blooms.
SubtypeArticle
KeywordAlgal Colony Sizes Cyanobacterial Bloom Eutrophic Lake Microcystis Photosynthesis
Department[Wang, Zhicong ; Li, Dunhai ; Cao, Xiuyun ; Song, Chunlei ; Zhou, Yiyong] Chinese Acad Sci, State Key Lab Freshwater Ecol & Biotechnol, Inst Hydrobiol, Wuhan 430072, Peoples R China
DOI10.2216/14-020.1
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
Indexed BySCI
Language英语
WOS Research AreaPlant Sciences ; Marine & Freshwater Biology
WOS SubjectPlant Sciences ; Marine & Freshwater Biology
WOS KeywordBLOOM-FORMING MICROCYSTIS ; RESOLVED FLUORESCENCE SPECTROSCOPY ; CHLOROPHYLL FLUORESCENCE ; ARTHROSPIRA-PLATENSIS ; LIGHT CONDITIONS ; DECLINE PROCESS ; PHOTOSYSTEM-II ; CYANOBACTERIA ; PHOSPHORUS ; CHINA
WOS IDWOS:000347965000003
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/342005/23956
Collection水环境工程研究中心
Corresponding AuthorZhou, YY (reprint author), Chinese Acad Sci, State Key Lab Freshwater Ecol & Biotechnol, Inst Hydrobiol, Wuhan 430072, Peoples R China.
AffiliationChinese Acad Sci, State Key Lab Freshwater Ecol & Biotechnol, Inst Hydrobiol, Wuhan 430072, Peoples R China
Recommended Citation
GB/T 7714
Wang, Zhicong,Li, Dunhai,Cao, Xiuyun,et al. Photosynthetic adaptation mechanism of Microcystis (Cyanophyceae) related to changes of colony size in a eutrophic lake[J]. PHYCOLOGIA,2014,53(6):552-560.
APA Wang, Zhicong,Li, Dunhai,Cao, Xiuyun,Song, Chunlei,Zhou, Yiyong,&Zhou, YY .(2014).Photosynthetic adaptation mechanism of Microcystis (Cyanophyceae) related to changes of colony size in a eutrophic lake.PHYCOLOGIA,53(6),552-560.
MLA Wang, Zhicong,et al."Photosynthetic adaptation mechanism of Microcystis (Cyanophyceae) related to changes of colony size in a eutrophic lake".PHYCOLOGIA 53.6(2014):552-560.
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