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学科主题: Microbiology
题名: Allelopathic control of cyanobacterial blooms by periphyton biofilms
作者: Wu, Yonghong ; Liu, Jiantong ; Yang, Linzhang ; Chen, Hong ; Zhang, Shanqing ; Zhao, Huijun ; Zhang, Naiming
通讯作者: Yang, LZ, Chinese Acad Sci, Inst Soil Sci, State Key Lab Soil & Sustainable Agr, 71 E Beijing Rd, Nanjing 210008, Peoples R China ; lzyang@issas.ac.cn
刊名: ENVIRONMENTAL MICROBIOLOGY
发表日期: 2011
卷: 13, 期:3, 页:604-615
收录类别: SCI
部门归属: [Wu, Yonghong; Yang, Linzhang; Chen, Hong] Chinese Acad Sci, Inst Soil Sci, State Key Lab Soil & Sustainable Agr, Nanjing 210008, Peoples R China; [Wu, Yonghong; Liu, Jiantong] Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China; [Zhang, Shanqing; Zhao, Huijun] Griffith Univ, Environm Futures Ctr, Gold Coast, Qld 4222, Australia; [Zhang, Shanqing; Zhao, Huijun] Griffith Univ, Sch Environm, Gold Coast, Qld 4222, Australia; [Zhang, Naiming] Yunnan Agr Univ, Sch Resource & Environm Sci, Kunming 650201, Peoples R China
资助者: National Natural Science Foundation of China [41030640, 40761014]; National High-tech R&D Program of China [2007AA06Z304]; National Key Technology RD Program [2007BAD87B12]
摘要: P>Periphyton biofilms are natural mixtures comprised of photoautotrophic and heterotrophic complex microorganisms. In this work, the inhibition effects of periphyton biofilms on cyanobacterial blooms were studied in pilot and field trials. Results show that the cyanobacterial species responsible for the blooms had an upper nutrient concentration threshold, below which it could not effectively compete with other organisms in the periphyton. The disappearance of the cyanobacterial blooms was due to the allelopathy between the cyanobacteria and periphyton biofilm. In particular, it was found that the periphyton biofilm could produce water-soluble allelochemicals such as indole and 3-oxo-alpha-ionone to significantly inhibit the growth of the cyanobacteria. These allelochemicals are able to damage the thylakoid membranes of the cyanobacteria, interrupt the electron transport in photosystem II, decrease effective quantum yields, and eventually lead to the failure of photosynthesis. A comprehensive discussion on the ecological consequences of these findings is also presented. This work demonstrates the potential of periphyton biofilm to be used as an environmentally friendly ecological engineering solution for (i) the control of cyanobacterial blooms and (ii) a transitional means for the construction of beneficial conditions for ecosystem restoration. In addition, this work provides significant insights into the competitive relationships between algae and biofilms.
语种: 英语
WOS记录号: WOS:000287852900005
ISSN号: 1462-2912
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/342005/15506
Appears in Collections:水环境工程研究中心_期刊论文

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Wu, Yonghong; Liu, Jiantong; Yang, Linzhang; Chen, Hong; Zhang, Shanqing; Zhao, Huijun; Zhang, Naiming.Allelopathic control of cyanobacterial blooms by periphyton biofilms,ENVIRONMENTAL MICROBIOLOGY,2011,13(3):604-615
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