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题名: Physiological responses of Microcystis aeruginosa NIES-843 (cyanobacterium) under the stress of chitosan modified kaolinite (CMK) loading
作者: Shao, Jihai2; Wang, Zhongjie1; Liu, Yang1; Liu, Hong2; Peng, Liang2; Wei, Xiangdong2; Lei, Ming2; Li, Renhui1
通讯作者: Li, RH (reprint author), Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China.
关键词: Physiological responses ; Microcystis aeruginosa ; Chitosan modified kaolinite
刊名: ECOTOXICOLOGY
发表日期: 2012-04-01
DOI: 10.1007/s10646-011-0828-5
卷: 21, 期:3, 页:698-704
收录类别: SCI
文章类型: Article
部门归属: [Wang, Zhongjie; Liu, Yang; Li, Renhui] Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China; [Shao, Jihai; Liu, Hong; Peng, Liang; Wei, Xiangdong; Lei, Ming] Hunan Agr Univ, Coll Resources & Environm, Changsha 410128, Hunan, Peoples R China
WOS标题词: Science & Technology ; Life Sciences & Biomedicine
资助者: National Water Science and Technology Projects[2009ZX07101-013-02]; Hunan Provincial Natural Science Foundation of China[10JJ6045]; National Natural Science Foundation of China[21107024]
类目[WOS]: Ecology ; Environmental Sciences ; Toxicology
研究领域[WOS]: Environmental Sciences & Ecology ; Toxicology
摘要: Flocculation with clays is a promising and environmentally friendly way to remove algal blooms. Physiological responses of Microcystis aeruginosa NIES-843 under the stress of chitosan modified kaolinite (CMK) loading were first reported in this paper. Compared with the control, the contents of chlorophyll a (Chl a) and carotenoids showed no significant difference at a CMK loading of 40 mg/l, but the phycocyanin content was significant lower than the control at this loading level. The contents of Chl a, carotenoids, phycocyanin and allophycocyanin were all significantly lower than the control at 80 and 160 mg/l CMK, and the leakage of phycobilins occurred at these two loading levels suggesting that flocculation with CMK could cause the damage of cellular membranes. The activities of extracellular alkaline phosphatase activity (E-APA), superoxide dismutase (SOD) and catalase (CAT) were all dramatically boosted under the stress of CMK loading. The changes of cellular dehydrogenase activity exhibited the same trends as of Chl a and carotenoids, and it decreased to the levels of lower than detectable limits on 12 and 8th day at a CMK loading of 80 and 160 mg/l, respectively. These results indicated that flocculation with CMK could cause cell mortality of M. aeruginosa.
英文摘要: Flocculation with clays is a promising and environmentally friendly way to remove algal blooms. Physiological responses of Microcystis aeruginosa NIES-843 under the stress of chitosan modified kaolinite (CMK) loading were first reported in this paper. Compared with the control, the contents of chlorophyll a (Chl a) and carotenoids showed no significant difference at a CMK loading of 40 mg/l, but the phycocyanin content was significant lower than the control at this loading level. The contents of Chl a, carotenoids, phycocyanin and allophycocyanin were all significantly lower than the control at 80 and 160 mg/l CMK, and the leakage of phycobilins occurred at these two loading levels suggesting that flocculation with CMK could cause the damage of cellular membranes. The activities of extracellular alkaline phosphatase activity (E-APA), superoxide dismutase (SOD) and catalase (CAT) were all dramatically boosted under the stress of CMK loading. The changes of cellular dehydrogenase activity exhibited the same trends as of Chl a and carotenoids, and it decreased to the levels of lower than detectable limits on 12 and 8th day at a CMK loading of 80 and 160 mg/l, respectively. These results indicated that flocculation with CMK could cause cell mortality of M. aeruginosa.
关键词[WOS]: LOCAL SOILS ; OXIDATIVE STRESS ; REMOVAL ; BLOOMS ; PHOTOSYNTHESIS ; CULTURES
语种: 英语
WOS记录号: WOS:000302065400008
ISSN号: 0963-9292
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/342005/17051
Appears in Collections:藻类生物学及应用研究中心_期刊论文

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作者单位: 1.Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China
2.Hunan Agr Univ, Coll Resources & Environm, Changsha 410128, Hunan, Peoples R China

Recommended Citation:
Shao, Jihai; Wang, Zhongjie; Liu, Yang; Liu, Hong; Peng, Liang; Wei, Xiangdong; Lei, Ming; Li, Renhui.Physiological responses of Microcystis aeruginosa NIES-843 (cyanobacterium) under the stress of chitosan modified kaolinite (CMK) loading,ECOTOXICOLOGY,2012,21(3):698-704
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