| Title: | Allelopathically inhibitory effects of eucalyptus extracts on the growth of Microcystis aeruginosa |
| Author(s): | Zhao W; Zheng Z; Zhang J; Roger SF; Luo X; |
| Address: | "Department of Environmental Science and Engineering, Fudan University, Shanghai, 200433, PR China. Department of Environmental Science and Engineering, Fudan University, Shanghai, 200433, PR China. Electronic address: zzhenghj@fudan.edu.cn. Department of Environmental Science, Mount Royal University, Calgary, AB, T3E 6K6, Canada" |
| DOI: | 10.1016/j.chemosphere.2019.03.070 |
| ISSN/ISBN: | 1879-1298 (Electronic) 0045-6535 (Linking) |
| Abstract: | "Microcystis aeruginosa (M. aeruginosa), as the dominant algae in eutrophic water bodies, has caused a serious harm to the local eco-environment. A biological tool, employing allelopathic inhibitory of eucalyptus to control M. aeruginosa, has been receiving tremendous attention. This work presents the results of the allelopathic inhibitory effects of eucalyptus (Eucalyptus grandis?ª+x?ª+E.urophylla 'GLGU9') extracts of roots (ERE), stems (ESE), and leaves (ELE) on culture solutions of M. aeruginosa and its eco-physiological mechanism. The inhibitory effects of the extracts on the growth of M. aeruginosa varied greatly with ELE exhibiting the highest level of potency. Modes of action by which ELE inhibited M. aeruginosa growth were established. They involved reduction in photosynthesis, disruption of the cell membrane integrity, and inhibition of esterase activities of the cyanobacterial cells. However, ELE did not exhibit any gradients of toxicity towards zebrafish nor Washington grass plant. Species abundance and diversity in the systems remained likewise unaffected by ELE. The synergistic interaction between ELE and single-component allelochemicals (e.g., gallic acid and berberine) was ascribed to the increase in efficacy of allelochemicals in the various systems. The results of this study provide an underlying, novel, and attractive approach for controlling the growth of M. aeruginosa in aquatic environments" |
| Keywords: | Allelopathy Animals Anti-Bacterial Agents/*pharmacology Berberine/*pharmacology Drug Synergism Esterases/antagonists & inhibitors Eucalyptus/*chemistry Gallic Acid/*pharmacology Microcystis/drug effects/*growth & development Pheromones/*pharmacology Photo; |
| Notes: | "MedlineZhao, Wei Zheng, Zheng Zhang, JunLei Roger, Saint-Fort Luo, XingZhang eng England 2019/03/20 Chemosphere. 2019 Jun; 225:424-433. doi: 10.1016/j.chemosphere.2019.03.070. Epub 2019 Mar 12" |
