|
| |
|
| |
|
|
Detekce variability DNA ve vybrané kolekci ostropestřce mariánského (Silybum marianum L.)
Kratochvílová, Tereza
Milk thistle (Silybum marianum L.) is a promising crop with a wide range of practical applications. It is the only source of the flavonolignan silymarin, which has a positive impact on the health of both humans and animals. Although it is particularly significant as a medicinal plant due to its beneficial effect on liver parenchyma, its genetic diversity has not been thoroughly explored. The study of variability is fundamental for optimizing agricultural production of this crop, clarifying correlations between genome architecture and flavonolignan content, breeding, or categorizing gene sources. This study evaluates the variability of a selected collection of milk thistle using iPBS primers and sequencing analysis of trnC-F and psbA-trnH regions in cpDNA. Knowledge of these sequences can be further utilized, for example, in phylogenetic analyses, diversity studies, and hybridization methods. The study of genetic variability at the molecular level provides important insights for the ideal cultivation or breeding of milk thistle.
|
|
| |
|
| |
|
| |
|
|
The use of genetic variability for the purposes of conservation biology: case studies of populations in captivity and nature
Opelka Somerová, Barbora ; Frynta, Daniel (advisor) ; Veselý, Milan (referee) ; Vojar, Jiří (referee)
2 Abstract In this dissertation thesis, I focused mainly on the topic of endangered species conservation in three projects, which were realized in cooperation with Prague ZOO. The other two subprojects, which are part of this dissertation, deal with the topic of genetic diversity analysis in nature and were realized in cooperation with institutions in Indonesia and Armenia. In all these projects I used a similar laboratory and computational methodology, although each project addressed different problems. In the main and probably the most important project, I studied the skinks of genus Tiliqua living in the Moluccas, New Guinea (Irian Jaya) and adjacent islands. I analyzed mitochondrial and nuclear markers to reveal the phylogenetic and population relationships. In the second project, I focused on the study of ex situ population of Mauremys annamensis in European captive breeding. The goal was to determine the haplotype diversity and detect the F1 hybrids in population. In the third project, I examined the genetic variability of Orlitia borneensis in European zoological gardens for the purposes of ex situ breeding program organization. The fourth project is focused on examination of genetic variability of Chilabothrus angulifer population, which is kept in European breeding. I studied ...
|
|
|
Genetic variability of the genus Alburnoides in Azerbaijan
Omelchenko, Dmytro ; Švátora, Miroslav (advisor) ; Vukićová, Jasna (referee)
The Caucasus region is characterized by high rate of endemism and taxa richness of fishes. Azerbaijan is a country situated on the border between Europe and Asia with rivers flowing in the Caspian Sea. Natural environment of this country is represented by various habitats with diverse ichthyofauna. This region is very attractive for biogeographical studies because it lays on the border of two different ecoregions. Even on the modern stage of scientific cognition, there is still lack of data about freshwater fishes from that region. Spirlins or rifle-minnows (Alburnoides Jeitteles, 1861, Actinopterygii, Cyprinidae) is a genus of small freshwater fishes and it has been chosen as a focus of this thesis because of numerous reports of new species from surrounding countries. The presented thesis is one of the seldom molecular studies trying to reveal the taxonomical situation within the genus Alburnoides, describe the phylogenetic relationships between geographically isolated populations, and provide biogeographical implications for fishes in the Caspian Sea river basins. Both mitochondrial (cytochrome b, cytochrome oxidase subunit I) and nuclear (RAG1, rhodopsin) markers were used in the study and the Maximum Likelihood, Maximum Parsimony and Bayesian phylogenetic analyses were performed. Further, the...
|
|
|
Phylogeography and genetic variation of benthic crustaceans in European inland waters
Pešek, Pavel ; Petrusek, Adam (advisor) ; Sacherová, Veronika (referee)
This thesis summarises published information about geographic distribution of genealogical lineages and genetic variability of benthic crustaceans of European continental waters, and evaluates the historical factors that affected their distribution. it is focused mainly on species for which multiple or in-depth studies have been published. A particular attention is given to crayfish of the genus Austropotamobius. Present distribution of genealogical lineages has been affected by changes in connectedness and availability of aquatic habitats. Species lineages often split in consequence to geological and climatic processes during the Tertiary, as exemplified on species complexes of Austropotamobius crayfish, species lineages of the amphipod Gammarus fossarum species complex, and the isopod Asellus aquaticus. The distribution of intraspecific lineages has been strongly affected by Quaternary cycles of glaciation, which not only destroyed many habitats by moving glaciers but also created new colonisation routes. Such routes were peri-glacial lakes, which had been used by Gammarus lacustris, or retreat of sea level, which enabled white-clawed crayfish to colonise England, and a freshwater crab to colonise Italy. Changes in sea levels are also the likely reasons for colonisation of continental waters by the...
|
|
|
Hybrid origin of beavers in Central Europe
Albrechtová, Alena ; Munclinger, Pavel (advisor) ; Bryja, Josef (referee)
The aim of the master diploma work is to investigate origin of Czech populations and genetic variability of almost all Eurasian populations of the European beaver (Castor fiber). For our purposes we collected specimens from Czech populations, reintroduced population in Kirov district in Russia and all European and Asian refugia. At the end of the 19th century the species was on the verge of extinction due to overhunting, surviving only in eight isolated refugial areas. The population size at the end of the 19th century was estimated as 1 200 animals. The number of individuals has increased thanks to the legal protection and reintroductions. The current population size is estimated at 640 000. It is obvious that the populations of beaver have recently undergone severe bottleneck. Beaver was completely extirpated in the Czech Republic in the 18th century. Since the 80th of the 20th century beavers re-established in the Czech Republic due to migration from neighbouring countries and reintroduction programmes, however we knew only little about the origin of beavers in the Czech Republic. I showed that our beavers are derived from individuals in France, Germany, Norway and east Europe. Mitochondrial DNA of Castor canadensis has not been found in Czech beavers. I studied microsatellite loci (first use for...
|
guest ::
