Kottuparambil, Sreejith published the artcileAnthracene phytotoxicity in the freshwater flagellate alga Euglena agilis Carter, Computed Properties of 2044-85-1, the main research area is Euglena agilis anthracene phytotoxicity chlorophyll.
The freshwater flagellate alga Euglena agilis Carter was exposed to the polycyclic aromatic hydrocarbon (PAH) anthracene for 96 h under optimal photosynthetically active radiation (PAR), and responses of growth, photosynthetic pigment production, and photosynthetic efficiency were assessed. Anthracene reduced the growth rate (μ) and levels of chlorophyll a (Chl a), chlorophyll b (Chl b), and total carotenoids. The growth rate was more sensitive than photosynthetic parameters, with a median effective concentration (EC50) of 4.28 mg L-1. Between 5 and 15 mg L-1, anthracene inhibited the maximum quantum yield (Fv/Fm) of photosystem II (PSII) and the maximum photosynthetic electron transport rate through PSII (rETRmax) with EC50 values of 14.88 and 11.8 mg L-1, resp. At all anthracene concentrations, intracellular reactive oxygen species (ROS) were elevated, indicating increased oxidative stress. Anthracene presumably reduced the PSII efficiency of photochem. energy regulation and altered the photochem. through intracellular ROS formation. Acute exposure to PAHs may induce severe physiol. changes in phytoplankton cells, which may influence vital ecol. processes within the aquatic environments. Addnl., growth and Chl a content may serve as sensitive risk assessment parameters of anthracene toxicity in water management since EC50 values for both overlap with anthracene levels (8.3 mg L-1) permitted by the US Environmental Protection Agency (USEPA).
Scientific Reports published new progress about Carotenes Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 2044-85-1 belongs to class esters-buliding-blocks, name is 2′,7′-Dichloro-3-oxo-3H-spiro[isobenzofuran-1,9′-xanthene]-3′,6′-diyl diacetate, and the molecular formula is C24H14Cl2O7, Computed Properties of 2044-85-1.
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