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Articles 1 - 7 of 7
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The Hyperaccumulation Of Zinc In Sunflowers And Its Effect On Disease Resistance, Rayner J. Seavey
The Hyperaccumulation Of Zinc In Sunflowers And Its Effect On Disease Resistance, Rayner J. Seavey
Honors Undergraduate Theses
Sunflowers are considered to be a part of a group of plants known as hyperaccumulators that share the ability to accumulate high amounts of heavy metals in the above ground organs, far in excess of the levels found in other species, often without suffering any phytotoxic effects. Quantifying the effects of zinc accumulation through the lens of the elemental defense hypothesis is essential for uncovering if there is a means to increase herbivore resistance in agricultural settings without the use of external interventions such as pesticides. A greenhouse study was conducted on four widely grown commercial cultivars of sunflower. Each …
Assessing The Impact Of Oyster Reef And Living Shoreline Restoration On Macroinvertebrate Community Assemblages In Mosquito Lagoon, Florida, Adam Searles
Honors Undergraduate Theses
As the world continues to experience substantial rates of habitat loss, habitat restoration has become of prime interest to ecologists worldwide. Restoration has shown to be successful in recovering targeted components of certain ecosystems but it is important to achieve a holistic understanding of the resulting ecological impacts it has on communities. To address this, four oyster reefs and three living shorelines were restored during the summer of 2017. These sites, along with four dead oyster reefs, four living oyster reefs, and three undisturbed (control) living shorelines, were sampled before restoration and regularly post-restoration for one year using lift nets. …
Micromanipulation And Genetic Analysis Of Individual Sperm Cells For Sexual Assault Investigations, Amanda Penn
Micromanipulation And Genetic Analysis Of Individual Sperm Cells For Sexual Assault Investigations, Amanda Penn
Honors Undergraduate Theses
Sexual assault investigations utilize both physical and biological evidence to aid in the investigation. Physical evidence may include fingerprints, hair, fibers, stains, soil, and glass. Biological evidence may include semen, saliva, vaginal secretions, menstrual blood, and skin. Semen, often found in small or trace quantities, is of great importance when trying to identify the perpetrator. From the semen sample, DNA profiles using autosomal short tandem repeats (aSTRs) (gold standard in forensic science) or Y-chromosome short tandem repeats (Y-STRs) can be obtained and can be used to identify a perpetrator through comparison to suspect reference samples or by searching the profile …
Investigating The Role Of Neuronal Aging In Fragile X-Associated Tremor/Ataxia Syndrome, Katlin Marie Hencak
Investigating The Role Of Neuronal Aging In Fragile X-Associated Tremor/Ataxia Syndrome, Katlin Marie Hencak
Honors Undergraduate Theses
Fragile X-associated tremor/ataxia syndrome (FXTAS) is an X-linked late-onset neurodegenerative disorder caused by a noncoding trinucleotide repeat expansion in the FMR1 gene. This gene produces fragile x mental retardation protein (FMRP), an RNA binding protein whose targets are involved in brain development and synaptic plasticity. One of the proposed mechanisms of FXTAS pathogenesis is an RNA gain-of-function in which the repeat expansion causes toxic mRNA that sequesters important proteins in the cell, interfering with their functions. Another suggested method of pathogenesis is through a mutant protein called FMRpolyG. This protein results from repeat-associated non-AUG (RAN) translation, in which the expanded …
Capillary Electrophoresis Buffer Optimization For Plant Tissue Analysis, Rebekah Davis
Capillary Electrophoresis Buffer Optimization For Plant Tissue Analysis, Rebekah Davis
Honors Undergraduate Theses
Capillary electrophoresis (CE) is an analytical chemistry approach that allows for the efficient separation by charge of diverse classes of compounds for analysis, including secondary metabolites. The goal of this work was to optimize a buffer system for plant tissue analysis using micellar electrokinetic chromatography (MEKC), and by doing so to understand the role of buffer components in the performance of this form of capillary electrophoresis. In this experiment we implemented a factorial design to optimize buffer composition for separating plant tissue and secondary metabolites. The results of this experiment will be used to optimize a universal buffer for MEKC …
Elucidating The Role Of Oxygen And Biotype In The Environmental Persistence Of Vibrio Cholerae, Amy M. Freiberg
Elucidating The Role Of Oxygen And Biotype In The Environmental Persistence Of Vibrio Cholerae, Amy M. Freiberg
Honors Undergraduate Theses
Vibrio cholerae is a natural inhabitant of aquatic environments and serves as the etiological agent for the severe diarrheal disease, cholera. Cholera epidemics follow a regular seasonal pattern, which account for tens to hundreds of thousands of deaths in a given year. V. choleraenaturally persist between epidemics through entry into a dormant state known as viable but nonculturable (VBNC). Research has shown that V. choleraein this VBNC state experience drastic morphological and metabolic changes, which serve as survival mechanisms until environmental conditions become suitable again. The natural marine ecosystem that V. cholerae inhabitis comprised of a complex …
Investigation Of Microplastic Accumulation In The Gastrointestinal Tract In Birds Of Prey, Julia Carlin
Investigation Of Microplastic Accumulation In The Gastrointestinal Tract In Birds Of Prey, Julia Carlin
Honors Undergraduate Theses
Plastic pollution is unavoidable in the natural environment. Consequences of plastic ingestion include exposure to environmental pollutants and toxin accumulation, causing endocrine disruption, inflammatory and physiological stress in organisms. Microplastics have been shown to transfer across food webs, however, limited studies have examined microplastic accumulation across terrestrial food webs. Furthermore, few studies have examined plastic pollution in apex predatory animals. A study was conducted to quantify the abundance of plastic pollution in the gastrointestinal tract in birds of prey. Two species were investigated, one which forages in terrestrial habitats and one which forages in aquatic environments including Buteo lineatus (red-shouldered …