Effect of Phytohormone Kinetin on Cell Density, Photosynthetic Pigments, Antioxidant Enzymes, and Fatty Acid Composition of the Microalgae Tetraselmis suecica

The effects of phytohormone Kinetin on cell density, photosynthetic pigments, antioxidant enzymes, and fatty acids composition the microalgae Tetraselmis suecica were investigated. T. was treated with different concentrations (0, 5, 10, 15, 20, 25 mg/L) at optimal growth conditions (salinity 28 g/L, temperature 25°C, 24 hr photoperiod). Results indicated an increase in density all treatments compared to control; however, it not significant, except for treatment, 15 mg/L ( p < 0.05 ). content pigments activities catalase superoxide dismutase, measured after 10 days, significantly increased presence id="M2"> Total n-3 acid higher Kinetin. At mg/L, arachidonic (ARA) eicosapentaenoic (EPA) control id="M3"> Therefore, could be useful production growth, chemical composition, enzyme activity.