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题名: Physiological variations of bloom-forming Microcystis (Cyanophyceae) related to colony size changes during blooms
作者: Li, Yinxia1, 2; Li, Dunhai1
通讯作者: Li, DH (reprint author), Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China.
关键词: Carbohydrate ; Carotenoid ; Microcystis colonies ; Nitrate reductase ; Phycocyanin
刊名: PHYCOLOGIA
发表日期: 2012-11-01
DOI: 10.2216/11-126.1
卷: 51, 期:6, 页:599-603
收录类别: SCI
文章类型: Article
部门归属: [Li, Yinxia; Li, Dunhai] Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China; [Li, Yinxia] Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China
WOS标题词: Science & Technology ; Life Sciences & Biomedicine
资助者: National Natural Science Foundation of China [40971249]; National Basic Research and Development Plan [2008CB418002]; Major Science and Technology Program for Water Pollution Control and Treatment [2008ZX07103-004, 2009ZX07104-005]
类目[WOS]: Plant Sciences ; Marine & Freshwater Biology
研究领域[WOS]: Plant Sciences ; Marine & Freshwater Biology
摘要: Microcystis has been intensively studied, but previous studies using laboratory cultures did not explain why colony size differed widely and frequently during natural blooms. This study was designed to unravel the mechanism for changes in biomass that accompany different sized colonies and to establish the basis for physiological variation. Monitoring colonies during blooms indicated that biomass variations for different sized colonies were associated with the frequent alteration of environment factors. Large-sized colonies had a higher carotenoid content (F = 10.74, P = 0.029) and phycocyanin content (F = 8.28. P = 0.041) during July and August; small-sized colonies had a higher total carbohydrate content (F = 9.43, P = 0.033) and higher nitrate reductase activities (P < 0.01, ANOVA). No significant difference was observed for alkaline phosphatase activities among different sized colonies (P < 0.05, ANOVA). We proposed that some key environmental factors combined with physiological variations in different sized colonies resulted in colony size succession. The selection of colony size may be an adaptive mechanism that promotes the formation, dominance and persistence of cyanobacterial blooms in eutrophic water bodies.
英文摘要: Microcystis has been intensively studied, but previous studies using laboratory cultures did not explain why colony size differed widely and frequently during natural blooms. This study was designed to unravel the mechanism for changes in biomass that accompany different sized colonies and to establish the basis for physiological variation. Monitoring colonies during blooms indicated that biomass variations for different sized colonies were associated with the frequent alteration of environment factors. Large-sized colonies had a higher carotenoid content (F = 10.74, P = 0.029) and phycocyanin content (F = 8.28. P = 0.041) during July and August; small-sized colonies had a higher total carbohydrate content (F = 9.43, P = 0.033) and higher nitrate reductase activities (P < 0.01, ANOVA). No significant difference was observed for alkaline phosphatase activities among different sized colonies (P < 0.05, ANOVA). We proposed that some key environmental factors combined with physiological variations in different sized colonies resulted in colony size succession. The selection of colony size may be an adaptive mechanism that promotes the formation, dominance and persistence of cyanobacterial blooms in eutrophic water bodies.
关键词[WOS]: HARMFUL ALGAL BLOOMS ; BLUE-GREEN-ALGA ; NITRATE ASSIMILATION ; BUOYANCY REGULATION ; AERUGINOSA KUTZ ; BENFORDS LAW ; LAKE ; NUTRIENT ; CYANOBACTERIA ; CONSEQUENCES
语种: 英语
WOS记录号: WOS:000311262100001
ISSN号: 0031-8884
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/342005/17244
Appears in Collections:水环境工程研究中心_期刊论文

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作者单位: 1.Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China

Recommended Citation:
Li, Yinxia; Li, Dunhai.Physiological variations of bloom-forming Microcystis (Cyanophyceae) related to colony size changes during blooms,PHYCOLOGIA,2012,51(6):599-603
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