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Extremophilic microorganisms
Procházková, Lenka ; Vítová, Eva (referee) ; Babák, Libor (advisor)
This bachelor’s thesis deals with the extremophilic microorganisms. There is described extreme environment in which these microorganisms occur, as well as several structural and chemical adaptations to the environment. In most cases, adaptation to extreme environment requires changes in the composition of membrane lipids, nucleic acids and proteins. Enzymes with stability in extreme environment are used in chemical, food, pharmaceutical and textile industry. There is also mentioned the application of extremophiles in the biodegradation of organic materials. This bachelor’s thesis is mainly focused on hyperthermophilic microorganisms, which have been most researched.
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Cold adaptation of snow algae: the role of changes in the composition of fatty acids
Dřízhalová, Marie ; Nedbalová, Linda (advisor) ; Němcová, Yvonne (referee)
Snow algae as typical extremophiles are good model organisms for study of adaptation for life on the boundary of physiological possibilities. So far, it is not clear, how these microorganisms ensure on the molecular level the optimization of photosynthetic processes in conditions around 0 řC, often with very high light intensity. The aim of this work was to find out light and temperature growth optima of two less studied strains and to assess the composition of fatty acids in selected psychrophilic and psychrotrophic strains from the genera Chloromonas and Chlamydomonas (Chlamydomonadales, Chlorophyta) from culture collections UTEX and CCCryo and collections in Europe including the Czech Republic and Slovakia. Using crossed gradients method, this thesis describes optimal temperature and light conditions of two strains of snow algae isolated from sites in the Krkonoše Mountains that are characterized by different ecological conditions. The strain Chloromonas reticulata Luční originates from alpine zone and according to its growth characteristics, it can be classified as psychrotrophic alga requiring high light. The second tested strain was Chloromonas pichinchae Meandry from forest environment, which is also characterized as psychrotrophic, In contrast to previous strain, it grows in a wide range of...
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Cold adaptation of snow algae: the role of changes in the composition of fatty acids
Dřízhalová, Marie ; Nedbalová, Linda (advisor) ; Němcová, Yvonne (referee)
Snow algae as typical extremophiles are good model organisms for study of adaptation for life on the boundary of physiological possibilities. So far, it is not clear, how these microorganisms ensure on the molecular level the optimization of photosynthetic processes in conditions around 0 řC, often with very high light intensity. The aim of this work was to find out light and temperature growth optima of two less studied strains and to assess the composition of fatty acids in selected psychrophilic and psychrotrophic strains from the genera Chloromonas and Chlamydomonas (Chlamydomonadales, Chlorophyta) from culture collections UTEX and CCCryo and collections in Europe including the Czech Republic and Slovakia. Using crossed gradients method, this thesis describes optimal temperature and light conditions of two strains of snow algae isolated from sites in the Krkonoše Mountains that are characterized by different ecological conditions. The strain Chloromonas reticulata Luční originates from alpine zone and according to its growth characteristics, it can be classified as psychrotrophic alga requiring high light. The second tested strain was Chloromonas pichinchae Meandry from forest environment, which is also characterized as psychrotrophic, In contrast to previous strain, it grows in a wide range of...
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Extremophilic microorganisms
Procházková, Lenka ; Vítová, Eva (referee) ; Babák, Libor (advisor)
This bachelor’s thesis deals with the extremophilic microorganisms. There is described extreme environment in which these microorganisms occur, as well as several structural and chemical adaptations to the environment. In most cases, adaptation to extreme environment requires changes in the composition of membrane lipids, nucleic acids and proteins. Enzymes with stability in extreme environment are used in chemical, food, pharmaceutical and textile industry. There is also mentioned the application of extremophiles in the biodegradation of organic materials. This bachelor’s thesis is mainly focused on hyperthermophilic microorganisms, which have been most researched.
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