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Cyanobacterial bloom mitigation by sanguinarine and its effects on aquatic microbial community structure
2019
Lin, Yiqing | Chen, Anwei | Luo, Si | Kuang, Xiaolin | Li, Renhui | Lepo, Joe Eugene | Gu, J.-D. | Zeng, Qingru | Shao, Jihai
Sanguinarine has strong inhibitory effects against the cyanobacterium Microcystis aeruginosa. However, previous studies were mainly limited to laboratory tests. The efficacy of sanguinarine for mitigation of cyanobacterial blooms under field conditions, and its effects on aquatic microbial community structure remain unknown. To elucidate these issues, we carried out in situ cyanobacterial bloom mitigation tests. Our results showed that sanguinarine decreased population densities of the harmful cyanobacteria Microcystis and Anabaena. The inhibitory effects of sanguinarine on these cyanobacteria lasted 17 days, after which the harmful cyanobacteria recovered and again became the dominant species. Concentrations of microcystins in the sanguinarine treatments were lower than those of the untreated control except during the early stage of the field test. The results of community DNA pyrosequencing showed that sanguinarine decreased the relative abundance of the prokaryotic microorganisms Cyanobacteria, Actinobacteria, Planctomycetes and eukaryotic microorganisms of Cryptophyta, but increased the abundance of the prokaryotic phylum Proteobacteria and eukaryotic microorganisms within Ciliophora and Choanozoa. The shifting of prokaryotic microbial community in water column was directly related to the toxicity of sanguinarine, whereas eukaryotic microbial community structure was influenced by factors other than direct toxicity. Harmful cyanobacteria mitigation efficacy and microbial ecological effects of sanguinarine presented in this study will inform the broad application of sanguinarine in cyanobacteria mitigation.
Показать больше [+] Меньше [-]Organotin levels in seafood
2000
Belfroid, A.C. | Purperhart, M. | Ariese, F.
Toxic effects of the antifouling agent Irgarol 1051 on periphyton communities in coastal water microcosms
1996
Dahl, B. | Blanck, H. (Goteborg University, Department of Plant Physiology, Botanical Institute, Carl Skottsbergs gata 22, S-413 19 Goteborg (Sweden))
Contamination of Mediterranean (Cote d'Azur) coastal waters by organotins and Irgarol 1051 used in antifouling paints
1996
Tolosa, I. | Readman, J.W. | Blaevoet, A. | Ghilini, S. | Bartocci, J. | Horvat, M. (International Atomic Energy Agency - Marine Environment Laboratory, 19 avenue des Castellans, P.O. Box 800, MC 98012 (Monaco))
