Browsing Faculty of Graduate Studies and Research by Author "Dahms, Tanya"
Now showing items 1-18 of 18
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An Analysis of Auxin Distribution and Activity during Photomorphogenesis and Skotomorphogenesis in the moss, Physcomitrella patens
(Faculty of Graduate Studies and Research, University of Regina, 2015-07)Plant development varies depending on whether it occurs in the light (photomorphogenesis) or in the dark (skotomorphogenesis). This phenomenon has been studied in depth in flowering plants such as Arabidopsis thaliana ... -
Analysis of In Vitro Differentiation Cues in Adult Mouse Neural Stem and Progenitor Cells
(Faculty of Graduate Studies and Research, University of Regina, 2015-07)Neural stem and progenitor cells (NSPCs) from the adult subventricular zone hold therapeutic potential for regenerative medicine. Specifically, differentiated oligodendrocytes can aid in remyelinating denuded axons in ... -
Anti-candida and Anti-virulence Activity of Essential Oils and Their Components
(Faculty of Graduate Studies and Research, University of Regina, 2021-10)Candida albicans is one of the most common fungi associated with lifethreatening infections. Treatment of the associated infections is often ineffective in the light of resistance, and so there is an urgent need to ... -
Characterization of the Microbial Communities Within Managed Bioremediation Systems: A Culture- and Genomics-Based Approach
(Faculty of Graduate Studies and Research, University of Regina, 2020-12)Wastewater treatment facilities (WWTF) and biobeds are engineered systems developed to mitigate nutrient and pesticide pollution, respectively, through microbial biodegradation. While understanding the microbiomes of ... -
Defective Spore Development and Differentially Expressed Genes In The Sporophytes of mkn4-2-1, A Triple Deletion Mutant of Physcomitrella patens
(Faculty of Graduate Studies and Research, University of Regina, 2020-05)KNOTTED1-like homeobox (KNOX) genes encode homeodomain transcription factors involved in maintaining the shoot apical meristem of flowering plants. They are widely distributed in land plants where they perform diverse ... -
An Efficient Lentiviral-based Proteomics Approach Identifies Mitochondrial Complexes with Neurodegenerative Function
(Faculty of Graduate Studies and Research, University of Regina, 2015-04)Perturbations in proteins involved in the mitochondrial processes have emerged as a causative factor in a wide range of life-threatening human diseases, such as neurodegenerative disorders. In fact, mitochondrial ... -
Escherichia coli and Rhizobium leguminosarum response mechanisms to sub-lethal 2,4-dichlorophenoxyacetic acid
(Faculty of Graduate Studies and Research, University of Regina, 2017-02)The chlorophenoxy herbicide 2,4-dichlorophenoxyacetic acid (2,4-D) is used extensively worldwide despite its known toxicity and our limited understanding of how it affects non-target organisms. To determine the global ... -
Genetic mechanisms contributing to antimicrobial resistance: gene repression in Mycobacterium, gene transfer in Salmonella, and phage sensitivity in Escherichia
(Faculty of Graduate Studies and Research, University of Regina, 2018-07)Bacteria develop resistance to antimicrobial agents through genetic mutation or horizontal acquisition of genetic material from resistant cells. Mycobacterium, Salmonella, and Escherichia are all capable of causing ... -
Investigating <i>Aspergillus nidulans</i> morphogenesis by atomic force microscopy.
(Faculty of Graduate Studies and Research, University of Regina, 2004) -
Investigating the Prevalence and Persistence of Different Escherichia Coli Genotypes in an Agriculturally Influenced Aquatic Ecosystem
(Faculty of Graduate Studies and Research, University of Regina, 2014-04)In several regions of Canada, including Saskatchewan, surface water such as streams and rivers are utilized as primary sources of irrigation water for fresh produce. Surface water can be exposed to faecal pollution from ... -
Novel genes required for proper cell envelope function in the plant symbiont Rhizobium leguminosarum
(Faculty of Graduate Studies and Research, University of Regina, 2012-07)The cell envelope of Gram-negative bacteria is a complex structure that is critical for facilitating interactions between bacteria and their environment. The objective of this research was to identify and characterize ... -
Phylogenetic Analysis and Characterization of Plant, Environmental, and Clinical Strains of Pantoea
(Faculty of Graduate Studies and Research, University of Regina, 2012-03)Multihost bacterial pathogens are an increasing concern as more bacterial species are found to cause harm to humans. Pantoea is recognized as a multihost pathogen, colonizing various hosts including plants, insects, and ... -
Regulation of competence gene homologs in Salmonella enterica serovar Typhimurium and Escherichia coil
(Faculty of Graduate Studies and Research, University of Regina, 2016-12)Many bacteria have the ability to take up DNA from their environment through a process termed “natural competence”. Even though there are numerous bacterial species that are recognized to be naturally competent, competence ... -
Role of the Neurotransmitter Glutamate in Neural Stem and Progenitor Cells Differentiation into Oligodendrocytes
(Faculty of Graduate Studies and Research, University of Regina, 2017-12)Various regions of the mammalian brain, including the subventricular zones (SVZs) of the hippocampus and the dentate gyrus (DG), contain niches of undifferentiated neural stem and progenitor cells (NSPCs) which persist ... -
Role of β-galactofuranose and β-glucan in Aspergillus nidulans hyphal cell wall ultrastructure and physical properties
(Faculty of Graduate Studies and Research, University of Regina, 2012-07)The fungal cell wall is a first line of defence from the external environment or chemical treatments. Glucan, chitin and mannan are the main components of the Aspergillus nidulans hyphal cell wall. The sugar β-galactofuranose ... -
Targeted knockout of PpASCL, an anther-specific chalcone synthase-like gene, supports role in sporopollenin biosynthesis in the moss Physcomitrella patens.
(Faculty of Graduate Studies and Research, University of Regina, 2014-09)The anther-specific chalcone synthase-like (ASCL) gene of Physcomitrella patens, PpASCL, has been implicated in the biosynthesis of sporopollenin, the main constituent of exine and perine, the two outermost layers of the ... -
Targeted knockout of PpORS encoding an ancient type III polyketide synthase in the moss Physcomitrella patens
(Faculty of Graduate Studies and Research, University of Regina, 2015-12)The ubiquitous presence of type III polyketide synthases (PKS) in the plant kingdom suggests their important roles in plant evolution. Among plant type III PKSs, PpORS from the model moss, Physcomitrella patens, has ... -
Targeted Knockouts of Selected GDSL Esterases and Class III Peroxidases In The Moss Physcomitrella patens Reveal Their Roles in Spore Wall Formation and Germination
(Faculty of Graduate Studies and Research, University of Regina, 2020-06)Early land plants evolved a number of key innovations to invade the land and diversify. One such innovation was a robust spore wall containing sporopollenin. Sporopollenin is the main lipidic component of spore and pollen ...
