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Differential responses of different phenotypes of Microcystis (Cyanophyceae) to UV-B radiation
Qin, Hongjie1,2; Li, Shuangshuang1,3; Li, Dunhai1; Li, DH (reprint author), Chinese Acad Sci, Inst Hydrobiol, Key Lab Algal Biol, Wuhan 430072, Peoples R China.
2015
Source PublicationPHYCOLOGIA
ISSN0031-8884
Volume54Issue:2Pages:118-129
AbstractMicrocystis can be single celled or colonial under certain conditions, thereby possessing phenotypic plasticity. Differential physiological and biochemical responses of colonial Microcystis aeruginosa FACHB 939 and its single-celled strain to ultraviolet type B radiation (UV-B) exposure were investigated. Results suggested that UV-B exposure exerted a lower inhibitory effect on the growth of colonial Microcystis, and that the single-celled strain had higher ability to recover after exposure to UV-B. Carotenoids/chlorophyll a (Chl a) ratios were increased, whereas phycobilisome/Chl a ratios were decreased by UV-B exposure. The photosynthetic activities of both phenotypes were inhibited, but colonial Microcystis showed higher tolerance and recovery ability to UV-B exposure. The sheath and shading effect, as well as changes of pigments of colonial Microcystis, were believed to play roles in resisting UV-B exposure. UV-B radiation can increase the sinking rate of the single-celled Microcystis and cause colonial Microcystis to shift from a floating to a sinking state. The observed reduction of colony size and increase in total carbohydrate content induced by UV-B radiation presumably caused the decrease in buoyancy in Microcystis. However, the increase in sinking rate is also an important way for Microcystis to avoid damage inflicted by UV-B radiation.
SubtypeArticle
KeywordChlorophyll Fluorescence Cyanobacteria Migration Rate Phenotypic Plasticity Photosynthesis Uv-b Radiation
Department[Qin, Hongjie ; Li, Shuangshuang ; Li, Dunhai] Chinese Acad Sci, Inst Hydrobiol, Key Lab Algal Biol, Wuhan 430072, Peoples R China ; [Qin, Hongjie] Jiangsu Acad Agr Sci, Inst Agr Resource & Environm, Nanjing 210014, Jiangsu, Peoples R China ; [Li, Shuangshuang] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
DOI10.2216/PH14-93.1
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 IDWOS:000355114900003
WOS KeywordSOLAR ULTRAVIOLET-RADIATION ; BLOOM-FORMING MICROCYSTIS ; BUOYANCY REGULATION ; CYANOBACTERIUM MICROCYSTIS ; VERTICAL MIGRATION ; PHYSIOLOGICAL-CHANGES ; AERUGINOSA KUTZ ; FLOS-AQUAE ; GROWTH ; LIGHT
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Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/342005/23934
Collection水环境工程研究中心_期刊论文
Corresponding AuthorLi, DH (reprint author), Chinese Acad Sci, Inst Hydrobiol, Key Lab Algal Biol, Wuhan 430072, Peoples R China.
Affiliation1.Chinese Acad Sci, Inst Hydrobiol, Key Lab Algal Biol, Wuhan 430072, Peoples R China
2.Jiangsu Acad Agr Sci, Inst Agr Resource & Environm, Nanjing 210014, Jiangsu, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Qin, Hongjie,Li, Shuangshuang,Li, Dunhai,et al. Differential responses of different phenotypes of Microcystis (Cyanophyceae) to UV-B radiation[J]. PHYCOLOGIA,2015,54(2):118-129.
APA Qin, Hongjie,Li, Shuangshuang,Li, Dunhai,&Li, DH .(2015).Differential responses of different phenotypes of Microcystis (Cyanophyceae) to UV-B radiation.PHYCOLOGIA,54(2),118-129.
MLA Qin, Hongjie,et al."Differential responses of different phenotypes of Microcystis (Cyanophyceae) to UV-B radiation".PHYCOLOGIA 54.2(2015):118-129.
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