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Infection pathway of Hymenoscyphus fraxineus and its interactions with ash mycobiota
Haňáčková, Zuzana ; Koukol, Ondřej (advisor) ; Adamčíková, Katarína (referee) ; Botella Sánchez, Leticia (referee)
Ash dieback is a disease that affected populations of native ash species throughout Europe at the beginning of the 21st century. It causes necrotic spots on the leaves, necrosis of shoots and branches and, especially in young individuals, the total death of the tree. In particular, F. excelsior is attacked by ash dieback. The causative agent of the disease is the invasive ascomycete fungus from Asia - Hymenoscyphus fraxineus. The aims of this dissertation thesis were as follows: 1) to study population structure of H. fraxineus at different scales - at regional scale (Czech populations) and at the level of particular ash petioles, this latter was to serve as a confirmation of the pathogen infection pathway; 2) to elucidate the effect of H. fraxineus on saprotrophs in the litter (namely H. albidus) and 3) to compare endophytic mycobiota of tolerant and susceptible F. excelsior trees and to test antagonistic interactions of these fungi against the pathogen. Analysis of Czech populations showed lower average gene diversity compared to other European populations with one Czech population differing significantly from the rest due to the lowest allelic richness and very low average gene diversity. The results indicate that despite minimal differences among European populations, local ecological or...
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Rationality Vs. Conflict: Radical Democracy and its Critique of Deliberative Democracy
Perović, Jovana ; Bíba, Jan (advisor) ; Znoj, Milan (referee)
Student in her thesis focuses on the work of the Belgian political theorist Chantal Mouffe and her contribution in the field of democratic theory. The first part of the thesis will examine key concepts of radical democracy: the concept of the political, antagonism, agonism, hegemony, etc. These theoretical concepts will be then applied to the current debate about the nature of democracy (with a focus on deliberative democracy). Powered by TCPDF (www.tcpdf.org)
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Counterbalances: antagonistic regulation of fission yeast growth and proliferation under favourable conditions and stress
Hohoš, Patrik ; Převorovský, Martin (advisor) ; Groušl, Tomáš (referee)
Microorganisms come across dramatically changing conditions in the environment. It is important for them to be agile for a quick and effective response. Signal transduction pathways are essential for this ability. They can sense a broad spectrum of extracellular and intracellular stimuli and regulate a great number of processes in the cell. For unicellular microorganisms, the most essential ability is to sense environmental conditions for proliferation or abnormal stress conditions. One of the most popular model microorganisms, the fission yeast Schizosaccharomyces pombe, is used for the signal transduction pathways research. Findings obtained by research on the fission yeast are applicable to other eukaryotic organisms, thanks to the high conservation of the signal transduction pathways between the fission yeast and other eukaryotic organisms. Proliferation-promoting signal transduction pathways promote cell proliferation, growth and mitotic cell cycle in fission yeast. The stress-response signal transduction pathways play an opposite role. They promote cellular defence against stress stimuli and promote the sexual differentiation process alongside meiotic cell cycle. At first sight, the whole machinery may look like a switch mechanism. There is, however, a more complex crosstalk mechanism...
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Rationality Vs. Conflict: Radical Democracy and its Critique of Deliberative Democracy
Perović, Jovana ; Bíba, Jan (advisor) ; Znoj, Milan (referee)
Student in her thesis focuses on the work of the Belgian political theorist Chantal Mouffe and her contribution in the field of democratic theory. The first part of the thesis will examine key concepts of radical democracy: the concept of the political, antagonism, agonism, hegemony, etc. These theoretical concepts will be then applied to the current debate about the nature of democracy (with a focus on deliberative democracy). Powered by TCPDF (www.tcpdf.org)
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