Architecture
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Sacred Space Design and Spiritual Experience: A Study of Latter-Day Saint Temples
Authors: Colton Korpi. Mentors: Brandon Ro. Insitution: Utah Valley University. Background: The apparent design shift and style of LDS temples has changed over time moving from a traditional style into a modern era. The ornamentation and architectural style of these sacred spaces play a role in shaping the user's spiritual experience by creating a profound sense of connection to religious tradition. Insights into the evolutionary link between human perception and ornamentation inform this exploration. Architecture, initially rooted in shelter and protection, has evolved into an art form, encompassing subjectivity, creativity, and aesthetics. The effects of architecture on our psychological well-being, makes it an ideal venue to understand its influence on spiritual experiences.Purpose: The purpose of this study is to investigate how the presence of ornamentation and architectural style influences the experience of sacred ordinances within LDS temples.Method: A comprehensive study method combining surveys and Visual Attention Software (VAS) to investigate the effects of temple design on user experiences. Surveys will present participants ranging in age, race, and religious beliefs with questions and visual comparisons of diverse temple styles, form, levels of ornamentation, and site design. Complementing this, VAS will offer a technological perspective by analyzing visual attention patterns. The research includes a selection of LDS temples with varying architectural styles distributed geographically to minimize regional biases.Results: The primary hypothesis is that architectural styles and factors of LDS temples impact the emotional and spiritual experiences of visitors. These results could influence and impact the process and overall thought of designing sacred spaces Conclusion: By utilizing both traditional survey methods and VAS technology, this research aims to provide an understanding of how temple architecture shapes the spiritual journey of visitors. The outcomes could have broader implications for architectural design in sacred spaces and offer valuable insights into the evolving role of architecture in spiritual well-being in a contemporary context.
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Breaking Boundaries
Authors: Arawyn Walter. Mentors: Alexandra Giannell. Insitution: Utah Valley University. “Breaking Boundaries” is an abstract self portrait that describes the duality of distancing myself from relationships, juxtaposed to being entangled in the complex connections I have with family and friends. Boundaries, in my sense of the word, are barriers/rules that are set to make an individual feel comfortable, however these barriers can be complicated and are different from person to person. This piece explores my own personal struggle when it comes to setting boundaries for myself and being able to understand the boundaries of others. The two figures resting in the center of the piece expressing two versions of myself, one in action and one in rest revealing two mental states that portray the emotions showing two extremes of what relationships feel like to me. Parts of the work physically emerges from the canvas from my hands that are tangled up in string. The distance of the tangled and strained strings from the canvas comments on my state now and the physical distance I have put between myself and past relationships in order to feel a sense of freedom from the pressures they put on me and I put on myself.
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Pixels to Pillars: AI's Role in Architectural Design
Authors: Nathaniel Stucki. Mentors: Brandon Ro. Insitution: Utah Valley University. In the field of architectural design, the invention of artificial Intelligence or (AI) has sparked incredible amounts of curiosity and debate in regard to its potential impact on classical design principles. For this Project I will dive into the relationship between AI and classical Architecture and aim to determine whether AI can Measure up to the educated experts of classical architecture and how we can use AI as a tool for design.The project will unravel in three separate phases (1-3). Phase 1 will explore the interior and exterior images provided by AI when describing a building akin to the Pantheon because it is considered to be the pinnacle of beauty. The incremental process of refining the text prompt is essential to obtain quality images to continue into the subsequent phases.In phase 2, the VAS by 3M, will be used to assess which of the AI images are the most captivating for both the exterior images and the interior images. The winning interior image and the winning exterior image will then move on to phase 3.Phase 3 will take these AI images and compare them to photographs of the Pantheon VAS 3M. This phase will evaluate the extent that AI can pull attention and will offer insights into the potential utility for architects or designers to use in the design process during the conceptual phase.In conclusion, I expect findings will show VAS attention percentages are slightly skewed in favor of human design and, while AI can enhance the efficiency in the design process, it cannot replace years of classical training. Architects would be wise to, instead of resisting change, fully embrace AI as a tool for design enhancement. This study emphasizes the importance of collaboration between “man and machine” in shaping the future for architecture.
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Investigating Homeowner Contentment: Exploring areas for improvement in home design and construction
Authors: Josh Lythgoe. Mentors: Brandon Ro. Insitution: Utah Valley University. Is the average American content with their home? If not, why are they discontent? One study suggests that how one perceives their home has more impact on them than the actual physical makeup of their home. This research will be added to by determining how the average homeowner perceives their home, and whether or not they are content with their current home. This research will be executed via a survey with a target sample size of at least one-hundred individuals. Factors such as race, socioeconomics, gender, and education will be studied to see what correlations exist between these factors and contentment in each category. Participants will be gathered by posting the survey on various forms of social media, as well as distributing flyers in public locations and randomly selected neighborhoods. Homeowners will be directed to rate various aspects of their home in the following areas: aesthetics and beauty, layout and flow, spaciousness and comfort, timelessness and longevity, maintenance and upkeep, and neighborhood and location. An average will be taken from each category to assess homeowners contentment by topic. The expected results are that on average homeowners will be more discontent than content in each of the above mentioned categories. A statistical analysis will be conducted to look for correlations between who designed the home and contentment. There is an expected positive correlation between contentment with one's home if they were involved in the design process. Similarly, there is an anticipated positive correlation with contentment if an architect designed the home. This research will be used to help guide design professionals to know how they can improve owner contentment with homes being newly constructed and renovated. The findings will help raise awareness of whether or not the current method of designing and constructing houses is meeting the homeowner’s needs, and expectations.
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The Pagoda at Memory Grove Park Analytique
Authors: Sadie Stutz. Mentors: Ben Felix. Insitution: Utah Valley University. The Pagoda is a World War I memorial located in Memory Grove Park in Salt Lake City Utah. This structure was designed by Slack Winburn who was a WWI veteran and local architect in Salt Lake City. It was built in 1925 and is placed to the right after the entry gates of this park. The structure is built out of marble and has simple but intricate detail around the top of the entablature. The pedestal and urn placed in the middle of the structure was added in later years. As you walk around this pedestal you are able to read the names of those in Utah who have passed on and have fought for our country. This memorial is a very elegant and peaceful structure to pay tribute to those who have passed on. The purpose of this project was to study and research this structure. I went to the structure and measured the different details, I composed this analytique to show the beauty in this structure. This composition is done with pencil and watercolor. I have shown an enlarged Doric column, entablature, and pedestal. There is a flower motif of a forget-me-not flower that is repeated through the ornamentation on the entablature and on the pedestal. I have shown the floor plan and floor details with the broken pieces of colored marble which focuses your attention on the pedestal in the middle to remember these men who fought. In the center of the composition is an elevation of the entire structure, surrounded by rose bushes. file:///C:/Users/sadst/Downloads/Sadie%20Stutz%20-%20Pagoda%20Analytique.pdf
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Tracking UAS Flight Paths with Multiple Radar Ground Stations
Authors: Gabe Snow, Joseph Ward. Mentors: Cammy Peterson. Insitution: Brigham Young University. Unmanned aerial system (UAS) research is fast becoming an important area of development in commercial and military applications. As UAS become more prevalent commercially and recreationally, there is a growing need to accurately track large numbers of these aircraft. This is particularly important in compact urban environments where potential flight paths are limited. Our research team at BYU is developing the Local Air Traffic Information System (LATIS), allowing multiple radar ground stations to communicate and track UAS across multiple fields of view. One major component of this system is Recursive Random Sample Consensus (R-RANSAC)---an algorithm used to correlate and combine the data from multiple sources. The process a ground station uses for calibration is to collect Real-Time Kinematic Global Positioning System (RTK GPS) coordinates of a friendly UAS as it passes through the field of view of a station's radar. R-RANSAC is then used to a) filter noise from the raw radar data, and b) identify "tracks," or paths which UAS have followed, using temporal and spatial proximity. The Orthogonal Procrustes Problem then provides a method to rotate data from the local radar frame to the global frame. These steps can be done live or with recorded data. Following this, the calibrated radar uses R-RANSAC to filter data and identify passing UAS with high accuracy. Our contributions to the project are developing communication software, refining R-RANSAC, and helping to implement the whole system in flight experiments. We are continuing to work on analyzing the data taken from flight tests and publish the improvements of this system compared to existing methods.
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Deployment Technique Optimization for Satellites
Authors: Lais Oliveira, Corinne Jackson. Mentors: Spencer Magleby. Insitution: Brigham Young University. Space applications, such as LiDAR telescopes and reflectarray antennas, often need large arrays that deploy to meet specific mission requirements. These deployable arrays transform from a compact stowed volume to a large deployed surface area, and it is crucial for them to be light and compact with a high functional area. In this project we are improving the ratio with research in deployment by investigating the deployment of various array designs developed by the Compliant Mechanisms Research lab, intended for space applications. We obtain relative metrics, including the deployment energy curves for each design, so designs can be compared for specific applications. Specifically, we aim to assess each design’s compatibility with the aim to minimize volume and maximize surface area. This research will allow us to determine which deployment techniques can be combined, or design for external structures to aid in deployment, if needed, to create an efficient deployable array.
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3D Printable Thickness Accommodated Origami Flasher Patterns
Authors: Davis Wing. Mentors: Larry Howell. Insitution: Brigham Young University. Origami-based mechanisms provide the opportunity for constructing highly compact systems for deployment in space and other applications. One pattern that shows great promise in this field is the flasher pattern, which unfurls a flat, rotationally symmetric arrangement of panels from a cylindrical spiral. The fold pattern is complex, and in attempting to better understand how it can be made from non-zero-thickness materials, and desiring a model which could be easily 3D printed, the following research was developed.As a result of this research, a flasher model was constructed which folds out to a deployed state that has almost triple the projected area of the stowed state. The idealized flasher was designed using Tessellatica, a program developed by Dr. Robert Lang. Turning the two-dimensional output from Tessellatica into a structure suitable for 3D printing required beginning with the stowed form of the flasher and thickening it across all panels. Fold lines were preserved at zero-thickness to ensure correct kinematics, and the bottom face of the model was constrained to be flat. Initial attempts at fulfilling these design requirements made apparent the need for more constraints, such as constraining the thicknesses of different panel sections to be proportional to their distance from the center and ensuring that the final unfolded state involved no overhangs.The final step in designing the model involved the implementation of living hinges. In a 3D printed design, living hinges offer mobility without assembly at the cost of being potential failure points, depending on print line orientations. Any hinge built from paths running in line with that hinge would immediately fail upon bending. The solution to this problem of parallelism was to use two layers with 0.1mm thickness on the bottom of the model, at 90° angles to one another. This allowed for all of the hinges, regardless of orientation, to be able to have the strength necessary to form a workable part.This research advances the manufacturability of zero-thickness origami patterns by providing models capable of being conveniently manufactured by anyone with a 3D printer. Specifically, it demonstrates a method for developing a zero-thickness model into a foldable structure of non-negligible thickness, and how to use default 3D slicer settings to build robust living hinges. The models have been uploaded on two popular file-sharing websites, Thingiverse and Printables, and have been downloaded hundreds of times.
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Investigation of the impact of heat treatment on Nitinol wires
Authors: Joseph Moore. Mentors: Jeff Hill. Insitution: Brigham Young University. Shape memory alloys are extensively utilized in many industries due to their ability to return to a predefined shape when heated. For medical applications, Nitinol, a nickel-titanium shape memory alloy, holds significant favor due to its biocompatibility and super elasticity. Since its discovery in the early 1960s, Nitinol has been the subject of ongoing research and fresh insights into how this alloy operates are of great importance to the industry.Nitinol wires sourced from manufacturers exhibit substantial uncertainty in their actuation temperature, also known as the austenite finish temperature. This study aims to investigate a heat-treatment method that can reduce these uncertainties, ultimately narrowing down the precise and consistent austenite finish temperature for two types of Nitinol wire: a single wire and a coiled variant.To achieve this, Nitinol samples were subjected to heat treatment in a furnace, with temperature and time parameters ranging from 500 to 650 °C and 5 minutes to 2 hours. Subsequently, the austenite finish temperature was triggered and recorded by immersing the heat-treated samples in degassed and deionized water at a controlled temperature.This research defines a straightforward yet effective approach that produces dependable results under controlled conditions. This method has the potential to streamline the determination of austenite finish temperatures, making future research more efficient. It may also open doors for innovative and efficient methods investigating the impact of heat treatment on Nitinol wires.
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An Apparatus for Fetal Descent Simulation
Authors: Benjamin Merrell. Mentors: Preston Manwaring. Insitution: Brigham Young University. Stage 1 and 2 labor is often characterized by manual examination of the maternal pelvis for fetal position and continuous monitoring by fetal cardiotocography. This practice has not changed in decades despite newer technology becoming available. Manual pelvic examinations have wide inter-examiner variability. Newer technology requires education and training. Unfortunately, both the decades old standard of care and newer technologies target Western markets with high reimbursements. Our lab is seeking to develop simple, robust, reliable, and low-cost technologies for low- and middle-income countries (LMICs) that don’t require the extensive education and training of modern western medical technologies. To facilitate this development, we, in collaboration with obstetric professionals, have created a 3D-printed test jig with a movable carriage that follows the normal path of fetal head delivery to test various stage 1 and 2 labor technologies in both dry and aqueous environments. Device requirements include: 1) delivery path must be representative of normal nulliparous and multiparous fetal head trajectories; 2) device must not utilize electronics or metal that could interfere with various tracking technologies; 3) device must provide a repeatable path for inter-technology evaluations; 4) device should allow for later expansion for higher-fidelity simulations. This presentation represents our early development work and initial outcomes.
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Exploring the Role of Dopamine and ATP in Microglial Motility and Morphology
Authors: Christopher Galbraith, Derek Langford, Hillary Wadsworth, Eliza White, Erin Taylor, Lauren Ford. Mentors: Jordan Yorgason. Insitution: Brigham Young University. Microglia are monocyte derived immune cells and exhibit complex signaling behavior that include phagocytic activity to threats and prolonged neuronal activity. ATP (adenosine triphosphate) is a known chemoattractant for microglia, but how chemoattraction is modulated by other transmitters is not well understood. ATP is co-packaged and released with dopamine, thus the present work examines microglia morphology and motility in the context of these two transmitters. Microelectroiontophoresis and multiphoton microscopy were used in brain slices from transgenic mice to examine effects of dopamine and ATP signaling on microglia. Lipopolysaccharide (LPS) transitioned the microglia from ramified to amoeboid morphology over a period of 4 hours. LPS also increased both dopamine and ATP release, as measured by fast scan cyclic voltammetry on a similar time course. Surprisingly, dopamine itself did not act as a chemoattractant to microglia, despite increasing after LPS treatment. By examining this relationship between neuronal and microglial activation we can better understand the complex circuitry of the reward pathway and immune system activation.
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Elucidating the Neural Mechanisms of Dopamine and Drugs of Abuse on Anxiety Using Dlight1 Sensors, VR, and 2-Photon Microscopy in Mice
Authors: Daniel Luke Isemonger, Jacob Cecil, Noah Moffat, Nathaniel Horne, Jordan Yorgason. Mentors: Jordan Yorgason. Insitution: Brigham Young University. Anxiety disorders are increasingly prevalent, and can be exacerbated by drug use, which can contribute to further drug seeking behavior. The underlying neural mechanisms of this relationship are not fully understood, but dopamine transmission is thought to play a key role. The goal of this project is to develop innovative tools to elucidate the role of dopamine and drugs of abuse on anxiety-like behavior and its relation to drug seeking in mice. Specifically, dopamine sensors and 2-photon microscopy via implanted endoscopic lenses, will be used to image dopamine dynamics in the NAcc of behaving mice while they are engaging in a virtual environment (VR) mimicking drug exposure and stress conditions. Using the simulation, mice are exposed to fearful stimuli, which will be related to behavioral responses (movement distance, speed, direction) and extracellular release events. By combining these techniques, we will be able to gain a deeper understanding of how dopamine terminal signaling contributes to drug seeking. This research has the potential to shed new light on the neural relationship between drugs of abuse and anxiety. This could help to inform the development of novel drugs and treatments for this disorder.
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LAB Diet Preference
Authors: Andrew Call. Mentors: John Chaston. Insitution: Brigham Young University. The main goal for this project is to confirm previous predictions of specific genes that may influence flies’ dietary preference to consume lactic acid bacteria (LAB). The preference of LAB is a normal phenotype that flies have, because the bacteria is essential for their gut microbiota. A previous genome-wide association study (GWAS) by another student in my mentor’s lab predicted genes that lead flies to prefer to consume diets that have live LAB. This genetically determined fly phenotype was measured by calculating the frequency and number of times the flies would choose the LAB inoculated diet over a control diet. My role will be to test if 7 genes have the influence predicted by this previous analysis. The experiment will follow close with the one previously performed by the student who predicted the genes I’m testing. I’ll be using a flyPAD which has a small arena (cage) that will hold one fly. Inside that arena are 2 wells that contain food. These wells have sensors attached to them, so each time the fly takes a sip of food, an electronic signal will be sent to a computer that keeps track of the number of sips from each well, the duration of each sip taken and time in between each sip and graph all the results taken for comparison between a control group and the test groups. I will starve 48 female mutant drosophila melanogaster for 3 hours prior to the experiment and then place them inside the flyPAD where I have previously placed 1 μl of 1:1 yeast-glucose diets in each well, however I will inoculate 0.05 μl of LAB in one of the diets. I will track each sip the flies take from each of the two foods for 1 hour. To measure accurately, there will be 2 controls also being tested. I will use flies that do not contain the genetic mutation and I will also have control arenas where both food wells do not contain LAB.I expect that any mutant that has a reduced preference for LAB-inoculated diet relative to the control diet represents a validated prediction of the previous study. In some cases, there may be no variation in preference for the control or LAB-inoculated diet, indicating a gene that does not contribute to fly preference for LAB in the diet. If none of the mutants tested validate the genome-wide association predictions, I will go back to the gene list and select one additional subset of genes to test if these influence the genetic prediction. We previously focused on genes that had multiple hits in the previous experiment, regardless of how significant the predictions were. In this second round, I will simply select the ten most significant remaining genes. Overall, this project will help confirm the previously selected genes with their association with a diet preference of lactic acid bacteria, improving the gut microbiota of Drosophila melanogaster.
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Achievement Goals and Burnout in Pre-Health Profession Undergraduate Students
Authors: Hunter Nelson. Mentors: Jamie Jensen. Insitution: Brigham Young University. Burnout is a mental condition resulting from prolonged stress in work or school. The Healthcare workforce experiences burnout much more than other career fields and many students in undergraduate STEM are pursuing a career in this field. The Pre-Health degree is one of the most competitive and demanding majors in STEM and we expect there to be high levels of burnout amongst these students. Our purpose was to gather and analyze data on the goals and burnout of pre-health care undergraduate students. We used surveys to collect data from students ranging from Freshmen to Seniors. The survey asked students questions regarding their goal motivations and feelings of burnout. Our results display a correlation between mastery-avoidance and experiencing burnout. By understanding these relationships, we can better help pre-health students avoid burnout.
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Effect of food depth on microbiome of Drosophila melanogaster
Authors: Rebecca Kreutz. Mentors: John Chaston. Insitution: Brigham Young University. Previous studies of the relationship between Drosophila melanogaster and its microbiome have shown that the bacteria in fruit flies can have a large effect on life history strategy. Higher proportions of Acetobacter, a genus of aerobic bacteria, correlate with faster development to reproductive maturity and higher, earlier fecundity. Greater proportions of Lactobacillus, a genus of anaerobic bacteria, correlate with lower initial reproduction but longer lifespan and maintenance of somatic cells. Despite this, the determinants of a Drosophila’s microbiome are still not well understood. This study will explore the relationship between the depth of the food that flies mature in and the proportion of anaerobic bacteria found in the flies. To test this, I will prepare vials with varying amounts of food, place fly eggs in them, inoculate them with a mixture of Acetobacter and Lactobacillus, homogenize the flies that mature, and compare the proportions of bacteria across the different food depths. Greater food depth will mimic food that is more rotten, because as fruit rots it becomes softer and the fly larvae are able to burrow deeper. As the flies gain greater access to the inside of the fruit, there may be an increase in the proportion of anaerobic bacteria in the fly’s gut, due to the reduced access of the bacteria to the air. Because different food depths can simulate different fruit ages, this study may be able to establish a relationship between the season the flies mature and their microbiome.
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Quaking Aspen Pathogen Defense in the Presence of Climate Change Related Drought
Authors: Allison Perkins, Aubrey Hawks, Talia Karasov. Mentors: Talia Karasov. Insitution: University of Utah. Over the past two decades, studies have documented a 20% decline in Quaking Aspen (Populus tremuloides) populations in western North America (Worrall et al., 2015; Stanke et al., 2021). This phenomenon has been fittingly characterized Sudden Aspen Decline (SAD), and is an increasingly pressing issue as the role of aspen as an ecologically irreplaceable keystone species impacts the health of the surrounding forests (Singer et al., 2019). SAD has been attributed to the interplay of climate change-driven drought and other biotic and abiotic factors that are less well characterized (Anderegg et al., 2013a). One potential contributor to SAD is biotic pests and pathogens (Marchetti et al., 2011; Anderegg et al., 2013a; Worrall et al., 2015). My study system includes both natural populations of aspen representing a precipitation gradient and a controlled garden experiment. The field experiments span five distinct sites across Utah & Colorado, selected and montintered by the Anderegg lab of the University of Utah. The experimental garden contains approximately 300 tree saplings subjected to various levels of drought stress, managed by the Anderegg lab on the University of Utah campus. Through the integration of both controlled and natural experiments, my research aims to comprehensively evaluate the impact of drought exposure on pathogen abundance and chemical defenses in aspen trees.Over the past two decades, studies have documented a 20% decline in Quaking Aspen (Populus tremuloides) populations in western North America (Worrall et al., 2015; Stanke et al., 2021). This phenomenon has been fittingly characterized Sudden Aspen Decline (SAD), and is an increasingly pressing issue as the role of aspen as an ecologically irreplaceable keystone species impacts the health of the surrounding forests (Singer et al., 2019). SAD has been attributed to the interplay of climate change-driven drought and other biotic and abiotic factors that are less well characterized (Anderegg et al., 2013a). One potential contributor to SAD is biotic pests and pathogens (Marchetti et al., 2011; Anderegg et al., 2013a; Worrall et al., 2015). Recent investigations have indicated a link between SAD and specific microbial diseases, suggesting that the increasing frequency and severity of droughts due to climate change might make aspen more vulnerable to certain pathogens, even though many of the most common pathogens of aspen in general require more abundant water (Aung et al., 2018). For example, the foliar Melamspora fungal pathogens require abundant water and are not frequently observed in drought stressed trees.On the other hand, Cytospora, which causes a devastating canker disease in aspen trunks, occurs at higher frequency in plots of trees suffering damage from drought (Guyon, 1996). Lin et al. (2023) shows changes to phyllospheric microbiome in aspen during drought, but far less is known about the leaves specifically. Could drought lead to an altered microbiome in aspen leaves? If different or possibly opportunistic pathogens are better able to colonize the leaf tissue under drought stress, this may be the case.It’s known that plants with a reduced diversity of microbiomes are more susceptible to pathogens (Zheng et al., 2020), but the there is little understanding how drought may reduce microbial diversity in aspen. Aspen have two main groups of chemical defenses (SPGs and CTs) that occur in relatively high levels in the leaf (Lindroth et al., 2023). It is well established that these defend against insect herbivores and that they come with a trade-off for plant growth (Marchetti et al, 2011). There is some observational evidence that these secondary compounds have an effect on pathogens (Jacoby et al., 2021), but there are few controlled studies on this idea. Additionally, Metlen et al. 2009 describes how trees in North America produce higher rates of these metabolites under wetter conditions, attributed to possible UV protection. However, the impact of additional environmental changes have of on the abundance of these compounds is understudied. Aspen are an ideal system to study forest disease and drought because the genus’ (Populus) genomes are easily sequenced and relatively tractable, aspen generally exhibit rapid vegetative growth, their defensive chemistry is relatively well known, and most importantly, they grow in cloned groves that reduce the genetic variation in experiments (Lindroth et al., 2023, Luquez et al., 2007).
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Lysine Methyltransferase SETD7 Methylates Two Novel Residues on Histone H3
Authors: Braxton Bird. Mentors: Sarah Franklin. Insitution: University of Utah. Heart disease ends the lives of nearly 700,000 people each year and has been the leading cause of death in the United States since 1950. Around this time researchers discovered that some modifications involving our genetic code could be altered to affect gene expression but leaves the DNA intact, which was later termed epigenetics. Today we’ve discovered that these epigenetic modifications, including post translational modifications (PTMS), regulate genes linked to cardiovascular disease. We recently examined the histone lysine methyltransferase SETD7, which is most prominently known for its ability to methylate histone H3K4. SETD7’s expression is upregulated in multiple types of heart disease in both humans and mice and is essential for cardiomyocyte differentiation in embryonic development. In addition to its ability to methylated H3K4, SETD7 has been shown to methylate 8 other histone residues. To further characterize the histone residues methylated by SETD7, we carried out an unbiased analysis of lysine residues methylated by SETD7 using an in vitro methyltransferase assay coupled with tandem mass spectrometry. We hypothesized that SETD7 may modify additional sites than those that have previously been identified. Our analysis determined that SETD7 monomethylates two novel residues on histone H3: lysine 36 (K36) and lysine 122 (K122). These sites of modification were also confirmed by western blotting for site specific antibodies to these methylation marks. Although our understanding of both these residues is limited, we do know that K36 methylation is linked to DNA replication and genomic stability while K122 methylation is downregulated in drug-resistant MCF-7/ADR cancer cells. These two novel methylation sites suggest that this lysine methyltransferase plays a more complex role in regulating epigenetic modifications and gene expression than previously recognized. Although the identification of this new enzymatic activity for SETD7 is important for understanding the dynamic function of methyltransferases, additional studies will be necessary to fully elucidate the role of SETD7 in cardiac physiology and gene regulation.
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Utilizing Genomic and Metabolic Data to Investigate the Evolutionary Ecology of Ant-Farmed Fungi
Authors: America Cox, Kendra Autumn , Bryn Dentinger. Mentors: Bryn Dentinger. Insitution: University of Utah. Neotropical ants of the Attini tribe evolved the innate ability to farm fungi. Agaricomycetidae contains two clades that are cultivated by ants: the lepiotaceous and pterulaceous cultivars. However, there are free-living relatives phylogenetically distributed throughout each cultivar clade. Comparison between the free-living relatives and attine system cultivars may identify the evolutionary differences caused by, or initially enabling, agricultural symbiosis. Our research compares free-living relatives and cultivars through genomic and metabolic analysis. Attines undertake significant cultivar maintenance through the regulation of pathogenic contamination of their fungal “gardens” as well as the provision of specific growth substrates, including insect frass. Noting the apparently specialized substrates cultivars receive from the ants, we conducted a pilot test for a growth media preference between a lepiotaceous cultivar, a pterulaceous cultivar, and a free-living pterulaceous relative. We placed the fungi on regular PDY media and PDY media infused with caterpillar frass, and the cultivars either changed structure or had improved growth on the frass-infused media. Following the pilot test, we will run metabolic assays on the cultivars and free-living relatives on different media types. This may indicate a media preference which gives further insight to the attine-fungal symbiotic relationship opposed to the fungal free-living relatives revealing pieces of the fungi’s evolutionary history. We performed DNA extraction, PCR testing, Sanger sequencing of the ITS region, and then whole genome sequencing on the cultivars and their free-living relatives. Sanger sequencing allowed us to build phylogenetic trees to examine the relationship between the free-living fungi and cultivars. The whole genome sequencing allowed us to use antiSMASH software to generate predicted secondary metabolite clusters in a fungi species that “escaped” cultivation, a cultivar, and a free-living relative. This preliminary data suggests a diversification of fungal secondary metabolites occurs after attine domestication. By looking at fungal metabolic and genomic data, we hope to gain insight into the fungi’s evolutionary history and agricultural symbiosis.
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