Inhibition of the growth of cyanobacteria during the recruitment stage in Lake Taihu

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• 作者：Yaping Lu ; Jin Wang ; Xiaoqian Zhang…
• 关键词：Tea ; Algal inhibition ; Pilot experiment ; Cyanobacteria ; Microcystis ; Taihu
• 刊名：Environmental Science and Pollution Research
• 出版年：2016
• 出版时间：March 2016
• 年：2016
• 卷：23
• 期：6
• 页码：5830-5838
• 全文大小：726 KB
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• 作者单位：Yaping Lu (1) (2)
  Jin Wang (1)
  Xiaoqian Zhang (1)
  Fanxiang Kong (2)
  
  1. Biological Experiment Teaching Center, College of Life Sciences, Nanjing Agricultural University, Nanjing, 210095, China
  2. State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing, 210008, China
  
• 刊物类别：Earth and Environmental Science
• 刊物主题：Environment
  Environment
  Atmospheric Protection, Air Quality Control and Air Pollution
  Waste Water Technology, Water Pollution Control, Water Management and Aquatic Pollution
  Industrial Pollution Prevention
  
• 出版者：Springer Berlin / Heidelberg
• ISSN：1614-7499

文摘

Microcystis is the dominant algal bloom genus in Lake Taihu. Thus, controlling the recruitment and growth of Microcystis is the most crucial aspect of solving the problem of algal blooms. Different concentrations (0.025, 0.05, and 0.1 g L−1) of tea extract were used to treat barrels of lake water at the recruitment stage of cyanobacteria. There was an inhibitory effect on algal growth in all treatment groups. The inhibitory effect on cyanobacteria was stronger than on other algae. The metabolic activity of cells in the treatment groups was significantly enhanced compared to the control, as an adaptation to the stress caused by tea polyphenols. The photosynthetic activity diminished in the treatment groups and was barely detected in the 0.05 and 0.1 g L−1 treatments. The levels of reactive oxygen species increased substantially in treated cells with the algal cells experiencing oxidative damage. The effect of tea on zooplankton was also studied. The number of Bosmina fatalis individuals did not change significantly in the 0.025 and 0.05 g L−1 treatments. These results suggested that the application of tea extracts, during the recruitment stage of blue-green algae, suppressed the recruitment and growth of cyanobacteria, thus offering the potential to prevent cyanobacterial blooms.