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Photobiont dynamics of Stereocaulon lichens
Vančurová, Lucie ; Škaloud, Pavel (advisor) ; Bérešová, Anna (referee) ; Dal Grande, Francesco (referee)
7 Abstract Lichens are an iconic example of symbiosis. They are widespread throughout the world. In some ecosystems, lichens are dominant autotrophs, sometimes one of the few living organisms capable of surviving local conditions. They grow on a variety of substrata, including artificial surfaces. Great diversity of their life strategies is related to the diversity of symbiotic partners forming the lichen thalli, which remains largely unresearched. Lichens as sessile organisms often have to face a changing environment or adapt to conditions at new localities where their propagules can spread. We have chosen the widespread genus Stereocaulon as a model system for studying symbiotic relationships in lichens and the connection of this relationships with environmental conditions. The main goals of this thesis were (1) to uncover the diversity of phycobionts (i.e., green algal photobionts) associated with Stereocaulon within the whole genus and particular species-level lineages; (2) to identify environmental factors affecting the distribution of phycobionts and their relationships with mycobionts on a global and local scale; and (3) to inspect the possibility of sharing phycobiont pool with other lichens and soil. For this purpose, we used phylogenetic analyses (ITS rDNA, 18S rDNA, rbcL, and actin type I gene),...
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Diagnosis of leishmaniases in humans and dogs
Černá, Eva ; Spitzová, Tatiana (advisor) ; Votýpka, Jan (referee)
Leishmaniasis is a serious disease caused by parasites that affects both people and animals. In people, this disease has three forms, cutaneous, mucocutaneous and visceral form. Visceral form is lethal if it's left untreated. Leismaniasis is usually diagnosed by using regular parasitological methods based on histocytological analysis. In the last few years, there has been a considerable progress in serological and molecular diagnostics. This thesis focuses on description and comparison of the traditional and the new diagnostic methods. Attention is paid primarily to the new methods, therefore serological and molecular. These methods are compared by their sensitivity, specifity, field application potential, financial costs and time consumption. Both human and canine diagnostics are mentioned due to the fact that dogs are a significant reservoir. Key words leishmaniasis, diagnostics, parasitology, humans, dogs, method, molecular, serological, sensitivity, specifity
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In silico prediction of postranslational modifications
Basíková, Iveta ; Novotný, Marian (advisor) ; Fišer, Karel (referee)
Post-translational modifications are an important form of cellural regulation, including matabolism, growth, differentiation, transcription activation, membrane transport and cell death. Experimental identification of post-translational modifications (PTMs), especially phosporylation, is still time consuming and expensive. Progress in silico PTM prediction tools was influnced an enormous growth of known sequences which are suitable for training set, processing and final result's interpretation. In silico prediction may facilitate the identification of potencional phosporylation sites and it may speed up in future research.
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