| Title: | Antialgal effects of five individual allelochemicals and their mixtures in low level pollution conditions |
| Author(s): | Zuo S; Zhou S; Ye L; Ding Y; Jiang X; |
| Address: | "College of Environmental Science and Engineering, Anhui Normal University, 189 South Jiuhua Road, Wuhu, 241003, People's Republic of China. spzuo@mails.gucas.ac.cn. College of Environmental Science and Engineering, Anhui Normal University, 189 South Jiuhua Road, Wuhu, 241003, People's Republic of China" |
| Journal Title: | Environ Sci Pollut Res Int |
| DOI: | 10.1007/s11356-016-6770-6 |
| ISSN/ISBN: | 1614-7499 (Electronic) 0944-1344 (Linking) |
| Abstract: | "An effective, environmentally friendly, and eco-sustainable approach for removing harmful microalgae is exploiting the allelopathic potential of aquatic macrophytes. In this study, we simulated field pollution conditions in the laboratory to investigate algal inhibition by allelochemicals, thereby providing insights into field practices. We tested five allelochemicals, i.e., coumarin, rho-hydroxybenzoic acid, protocatechuic acid, stearic acid, and rho-aminobenzenesulfonic acid, and a typical green alga, Chlorella pyrenoidosa, under two conditions. In the unpolluted treatment, individual allelochemicals had strong algal inhibition effects, where coumarin and rho-hydroxybenzoic acid had greater potential for algal inhibition than protocatechuic acid, stearic acid, and rho-aminobenzenesulfonic acid based on the 50 % inhibitory concentration. However, when two or three allelochemicals were mixed in specific proportions, the algal inhibition rate exceeded 80 %, thereby indicating allelopathic synergistic interactions. Mixtures of four or five allelochemicals had weak effects on algal inhibition, which indicated antagonistic interactions. Furthermore, the presence of low lead pollution significantly reduced the antialgal potential of individual allelochemicals, whereas the allelopathic synergistic interactions with mixtures between two or three allelochemicals were changed into antagonistic effects by low pollution. In particular, the allelopathic antagonistic interactions between four or five allelochemicals were increased by pollution. The allelopathic performance of these five allelochemicals may depend on various factors, such as the chemical species, mixture parameters, and algal strain. Thus, we found that low level pollution reduced the allelopathic inhibition of microalgae by allelochemicals. Therefore, the control of algae by the direct addition of allelochemicals should consider various environmental factors" |
| Keywords: | Allelopathy/physiology Chlorella/*drug effects Pheromones/*pharmacology Allelochemical Allelopathic interaction Antialgal potential Chlorella pyrenoidosa Low pollution; |
| Notes: | "MedlineZuo, Shengpeng Zhou, Shoubiao Ye, Liangtao Ding, Ying Jiang, Xiaofeng eng Germany 2016/05/04 Environ Sci Pollut Res Int. 2016 Aug; 23(15):15703-11. doi: 10.1007/s11356-016-6770-6. Epub 2016 May 2" |
