Effect of Anthracene (ANT) on Growth, Microcystin (MC) Production and Expression of MC Synthetase (mcy) Genes in Microcystis aeruginosa

ANT is a commonly occurring polycyclic aromatic hydrocarbon (PAH) in natural eutrophic waters where Microcystis blooms break out usually. In this study, effects of ANT at different concentrations (0.02, 0.06, 0.18, 0.54, and 1.62 μg/mL) on the growth, microcystin-LR (MC-LR) production, and expressio...

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Bibliographic Details
Published in:Water, air, and soil pollution air, and soil pollution, 2016-08, Vol.227 (8), p.1, Article 259
Main Authors: Bi, Xiangdong, Dai, Wei, Zhou, Qixing, Wang, Ying, Dong, Shaojie, Zhang, Shulin, Qiao, Xiuting, Zhu, Guoxia
Format: Article
Language:English
Subjects:
Algae
Anthracene
Aromatic hydrocarbons
Atmospheric Protection/Air Quality Control/Air Pollution
Climate Change/Climate Change Impacts
Culture media
Earth and Environmental Science
Environment
Environmental monitoring
Eutrophic waters
Eutrophication
Experiments
Gene expression
Hydrogeology
Laboratories
Microcystins
Microcystis
Microcystis aeruginosa
Molecular weight
Natural waters
Polycyclic aromatic hydrocarbons
Soil Science & Conservation
Statistical analysis
Water pollution
Water Quality/Water Pollution
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Summary:ANT is a commonly occurring polycyclic aromatic hydrocarbon (PAH) in natural eutrophic waters where Microcystis blooms break out usually. In this study, effects of ANT at different concentrations (0.02, 0.06, 0.18, 0.54, and 1.62 μg/mL) on the growth, microcystin-LR (MC-LR) production, and expression of three key mcy genes in Microcystis aeruginosa were investigated. The results showed that all the tested concentrations of ANT inhibited M. aeruginosa growth significantly except 0.02 μg/mL ANT in the early stage of the experiment. In the culture media, initially applied ANT concentrations decreased significantly after 3 days of incubation. ANT stimulated MC-LR production in a concentration-dependent manner. After exposure to ANT for 1 day, the expression of mcyB gene was inhibited and the inhibitory effects increased with ANT concentrations. ANT at higher concentrations (above 0.02 μg/mL) stimulated gene expression of mcyD ( P  
ISSN:0049-6979
1573-2932
DOI:10.1007/s11270-016-2956-2