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Vliv abiotických faktorů (teploty) na vybrané druhy zelených mikrořas
Ston, Michal
Microalgae as a unicellular organism are part of huge variety of ecosystems, and therefore, are susceptible to environment changes. They have developed mechanisms helping them to adapt to those changes. Although some changes can have negative effect on cell life. Even though, many algae have adapted to extreme conditions, the main problem is climate change and sudden temperature changes that lead to cell damage of microalgae. The main objective of the present master's theses was to compare and evaluate effect of increased temperature on different types of microalgae. The results suggest that effect of temperature of 40 °C had a different effects in Chlorella sorokiniana and Scenedesmus obliquus which was found using spectrophotometer analysis of photosynthetic pigments, secondary metabolites, and antioxidant capacity. The results showed that Chlorella sorokiniana reacted positively to higher temperature of 40 °C by increasing production of those compound, respect to the control groups at 23 °C (p ≤0,01). Scenedesmus obliqus mainly answered by lowering production of compounds, except of chlorophyll b that showed increase in production. In all studied parameters, statistically significant differences were observed (p ≤0,01) between Chlorella sorokiniana and Scenedesmus obliquus at 40 °C. Specifically, Chlorella sorokiniana showed better adaptive response to increased temperature in all investigated parameters.
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