期刊
AQUATIC TOXICOLOGY
卷 99, 期 3, 页码 405-412出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.aquatox.2010.05.018
关键词
Microcystis aeruginosa; Toxicity; CuSO4; H2O2; PNA; Gene transcription
资金
- National Basic Research Program of China [2010CB126100]
- Natural Science Foundation of China [20607020]
- Natural Science Foundation of Zhejiang Province [Y5080019]
lgal blooms have been increasing in prevalence all over the world, destroying ecosystems and placing other organisms at risk Chemical remediation is one of most Important methods of controlling algal bloom formation The effects of copper sulfate, hydrogen peroxide (H2O2) and N-phenyl-2-naphthylamine on photosynthesis-related and microcystin-related gene transcription and physiological changes of Microcystis aeruginosa were analyzed The results suggest that transcription of psaB, psbD1 and rbcL was inhibited by the three algaecides, which blocked the electron transport chain, significantly enhanced reactive oxygen species (ROS) accumulation and overwhelmed the antioxidant system The increase in ROS destroyed pigment synthesis and membrane integrity, which inhibited or killed the algal cells Furthermore, H2O2 treatment down-regulated mcyD transcription, which Indicated a decrease in the microcystin level in the cells Our results demonstrate that H2O2 has the greatest potential as an algaecide because It not only inhibits algae growth but may reduce microcystin synthesis (C) 2010 Elsevier B V. All rights reserved
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