| Title | NOTE] Quantification of Toxic Effects of the Herbicide Metolachlor on Marine Microalgae Ditylum brightwellii (Bacillariophyceae), Prorocentrum minimum (Dinophyceae), and Tetraselmis suecica (Chlorophyceae) |
|---|---|
| Author | Vinitha Ebenezer and Jang-Seu Ki* |
| Address | Department of Green Life Science, Sangmyung University, Seoul 110-743, Republic of Korea |
| Bibliography | Journal of Microbiology, 51(1),136-139, 2013, |
| DOI | 10.1007/s12275-013-2114-0 |
| Key Words | marine microalgae, ecotoxicity assessment, EC50, herbicide, metolachlor |
| Abstract | Toxic effects of the herbicide metolachlor (MC) were evaluated for three marine microalgae, Tetraselmis suecica (chlorophyte), Ditylum brightwellii (diatom), and Prorocentrum minimum (dinoflagellate). MC showed a significant reduction in cell counts and chlorophyll a levels. Median effective concentration (EC50) was calculated based on chlorophyll a levels after a 72-h MC exposure. EC50 values for T. suecica, D. brightwellii, and P. minimum were 21.3, 0.423, and 0.07 mg/L, respectively. These values showed that the dinoflagellate was most sensitive when exposed to the herbicide, at a concentration comparable to freshwater algae, suggesting its potential as an appropriate model organism for ecotoxicity assessments in marine environments. |