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Isolation, identification and characterization of phytoplankton-lytic bacterium CH-22 against Microcystis aeruginosa
Zhang, Hong; Yu, Zengliang; Huang, Qing; Xiao, Xiang; Wang, Xu; Zhang, Fayu; Wang, Xiangqin; Liu, Yongding; Hu, Chunxiang; Zhang, H, Chinese Acad Sci, Key Lab Ion Beam Bioengn, Inst Plasma Phys, Hefei 230031, Anhui, Peoples R China; zh_elite@126.com, zlyu@ipp.ac.cn
2011
Source PublicationLIMNOLOGICA
ISSN0075-9511
Volume41Issue:1Pages:70-77
AbstractA bacterial strain named CH-22 showing phytoplankton-lytic activity against bloom-forming cyanobacterium Microcystis aeruginosa was isolated from Lake Chaohu of Anhui Province, China. The isolated strain was identified as Pseudomonas putida by morphology and homology research based on 16S rDNA. The phytoplankton-lytic activity was confirmed by reduction in cell number and chlorophyll a concentration of M. aeruginosa in an infected culture for a defined period. The initial bacterial and M. aeruginosa densities affected the phytoplankton-lytic activity significantly. When the 15% (150 mu L/mL) concentration of bacterial cultures was infected, the highest phytoplankton-lytic activity reached to 98.8% after 7 days. When the initial M. aeruginosa density was less than 3 x 10(6) cells/mL, about 90.0% of chlorophyll a was removed. Obvious reduction in phycocyanin concentration in the treated M. aeruginosa suggests that isolated strain may possibly inhibit the synthesis of photosynthetic apparatus. Supernatants of bacterial cultures showed higher phytoplankton-lytic activity, suggesting that phytoplankton-lytic bacterium P. putida indirectly attacked M. aeruginosa cells by secretion of extracellular antialgal substances, which is characterized as anti-heat shock. The isolated P. putida also showed effective phytoplankton-lytic activity against a wide range of phytoplankton. These results suggest that indigenous bacteria isolated from eutrophic lake may be employed to regulate the ecological balance between the phytoplankton and bacteria, and consequently, to reduce the occurrence of cyanobacterial blooms in freshwaters. (C) 2010 Elsevier GmbH. All rights reserved.
KeywordPhytoplankton-lytic Bacterium Pseudomonas Putida Microcystis Aeruginosa Biological Control Cyanobacterial Blooms
Department[Zhang, Hong; Yu, Zengliang; Huang, Qing; Wang, Xu; Zhang, Fayu; Wang, Xiangqin] Chinese Acad Sci, Key Lab Ion Beam Bioengn, Inst Plasma Phys, Hefei 230031, Anhui, Peoples R China; [Xiao, Xiang] Univ Sci & Technol China, Sch Chem, Lab Environm Biotechnol, Hefei 230026, Anhui, Peoples R China; [Liu, Yongding; Hu, Chunxiang] Chinese Acad Sci, State Key Lab Freshwater Ecol & Biotechnol, Inst Hydrobiol, Wuhan 430072, Peoples R China
Subject AreaLimnology
Funding OrganizationPresident Foundation of Hefei Institutes of Physical Science ; Chinese Academy of Sciences [075AH24581]; National Basic Research Program of China [2007CB936602] ; President Foundation of Hefei Institutes of Physical Science ; Chinese Academy of Sciences [075AH24581]; National Basic Research Program of China [2007CB936602] ; President Foundation of Hefei Institutes of Physical Science ; Chinese Academy of Sciences [075AH24581]; National Basic Research Program of China [2007CB936602] ; President Foundation of Hefei Institutes of Physical Science ; Chinese Academy of Sciences [075AH24581]; National Basic Research Program of China [2007CB936602]
Indexed BySCI
Language英语
WOS IDWOS:000286909300009
Funding OrganizationPresident Foundation of Hefei Institutes of Physical Science ; Chinese Academy of Sciences [075AH24581]; National Basic Research Program of China [2007CB936602] ; President Foundation of Hefei Institutes of Physical Science ; Chinese Academy of Sciences [075AH24581]; National Basic Research Program of China [2007CB936602] ; President Foundation of Hefei Institutes of Physical Science ; Chinese Academy of Sciences [075AH24581]; National Basic Research Program of China [2007CB936602] ; President Foundation of Hefei Institutes of Physical Science ; Chinese Academy of Sciences [075AH24581]; National Basic Research Program of China [2007CB936602]
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Cited Times:40[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/342005/15536
Collection藻类生物学及应用研究中心_期刊论文
Corresponding AuthorZhang, H, Chinese Acad Sci, Key Lab Ion Beam Bioengn, Inst Plasma Phys, Hefei 230031, Anhui, Peoples R China; zh_elite@126.com, zlyu@ipp.ac.cn
Recommended Citation
GB/T 7714
Zhang, Hong,Yu, Zengliang,Huang, Qing,et al. Isolation, identification and characterization of phytoplankton-lytic bacterium CH-22 against Microcystis aeruginosa[J]. LIMNOLOGICA,2011,41(1):70-77.
APA Zhang, Hong.,Yu, Zengliang.,Huang, Qing.,Xiao, Xiang.,Wang, Xu.,...&zh_elite@126.com, zlyu@ipp.ac.cn.(2011).Isolation, identification and characterization of phytoplankton-lytic bacterium CH-22 against Microcystis aeruginosa.LIMNOLOGICA,41(1),70-77.
MLA Zhang, Hong,et al."Isolation, identification and characterization of phytoplankton-lytic bacterium CH-22 against Microcystis aeruginosa".LIMNOLOGICA 41.1(2011):70-77.
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