Effects of polycyclic aromatic hydrocarbons on marine and freshwater microalgae - A review
| Autor: | Hiba Ben Othman, Frances R. Pick, Asma Sakka Hlaili, Christophe Leboulanger |
|---|---|
| Rok vydání: | 2022 |
| Předmět: |
Fluorenes
Environmental Engineering Acenaphthenes Health Toxicology and Mutagenesis Chlorophyll A Water Fresh Water Pollution Lipids Antioxidants Phytoplankton Benzo(a)pyrene Microalgae Environmental Chemistry Polycyclic Aromatic Hydrocarbons Waste Management and Disposal Ecosystem Water Pollutants Chemical |
| Zdroj: | Journal of hazardous materials. 441 |
| ISSN: | 1873-3336 |
| Popis: | The first synthetic review of the PAHs effects on microalgae in experimental studies and aquatic ecosystems is provided. Phytoplankton and phytobenthos from marine and freshwaters show a wide range of sensitivities to PAHs, and can accumulate, transfer and degrade PAHs. Different toxicological endpoints including growth, chlorophyll a, in vivo fluorescence yield, membrane integrity, lipid content, anti-oxidant responses and gene expression are reported for both freshwater and marine microalgal species exposed to PAHs in culture and in natural assemblages. Photosynthesis, the key process carried out by microalgae appears to be the most impacted by PAH exposure. The effect of PAHs is both dose- and species-dependent and influenced by environmental factors such as UV radiation, temperature, and salinity. Under natural conditions, PAHs are typically present in mixtures and the toxic effects induced by single PAHs are not necessarily extrapolated to mixtures. Natural microalgal communities appear more sensitive to PAH contamination than microalgae in monospecific culture. To further refine the ecological risks linked to PAH exposure, species-sensitivity distributions (SSD) were analyzed based on published EC |
| Databáze: | OpenAIRE |
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