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Articles 541 - 552 of 552
Full-Text Articles in Genetics and Genomics
Weak Olfactory Preferences Of The Gall Midge Asphondylia Borrichiae, Associated Fungal Endophytes And Implications On Gene Flow And Host Range Expansion, Frances S. Nagle
Weak Olfactory Preferences Of The Gall Midge Asphondylia Borrichiae, Associated Fungal Endophytes And Implications On Gene Flow And Host Range Expansion, Frances S. Nagle
UNF Graduate Theses and Dissertations
Asphondylia borrichaie is a small fly (Diptera: Cecidomyiidae) that is currently undergoing host-associated sympatric divergence. Asphondylia borrichaie is an ambrosia galler, these insects utilize a host plant for oviposition, but its offspring also rely on a symbiotic fungus (or fungal community) to promote the formation of the gall as well as serve as a food source for the developing larvae. Previous studies indicate that A. borrichaie consists of two host- associated populations based on its original host plant Borrichia frutescens (Asterales: Asteraceae), and another one from the two Iva species (I. frutescens (Asterales: Asteraceae) and I. imbricata …
Breaking The Chain – The Role Of Intersexual Genetic Correlations In Sexual Dimorphism And The Consequences And Limits Of Their Evolution, Matthew Ma Maoloni, Tara Newman, Tristan Af Long Dr.
Breaking The Chain – The Role Of Intersexual Genetic Correlations In Sexual Dimorphism And The Consequences And Limits Of Their Evolution, Matthew Ma Maoloni, Tara Newman, Tristan Af Long Dr.
Theses and Dissertations (Comprehensive)
In many sexually reproducing species, males and females often differ in countless ways beyond their primary sexual organs. This phenomenon is known as sexual dimorphism, and it is generally considered to be an adaptive response to differences in the selection pressures experienced by males and females. Despite the advantages associated with sexual dimorphism, it does not evolve completely unhindered – there are plenty of biological effects that can limit the extent and rate of divergence between the sexes. This research project focusses on the potential role of the intersexual genetic correlation (rmf) – which describes the …
The Receptor Basis Of Serotonergic Modulation In An Olfactory Network, Tyler Ryan Sizemore
The Receptor Basis Of Serotonergic Modulation In An Olfactory Network, Tyler Ryan Sizemore
Graduate Theses, Dissertations, and Problem Reports (ETD)
Neuromodulation is a nearly ubiquitous process that endows the nervous system with the capacity to alter neural function at every level (synaptic, circuit, network, etc.) without necessarily adding new neurons. Through the actions of neuromodulators, the existing neural circuitry can be adaptively tuned to achieve flexible network output and similarly dynamic behavioral output. However, despite their near ubiquity in all sensory modalities, the mechanisms underlying neuromodulation of sensory processing remain poorly understood. In this dissertation, I address three main questions regarding the mechanisms of one modulator (serotonin) within one sensory modality (olfaction). I begin by establishing a "functional atlas" of …
Population Genetic Structure Of Bobcats (Lynx Rufus) In South Dakota: Using Harvested Samples To Inform Management, Stuart C. Fetherston
Population Genetic Structure Of Bobcats (Lynx Rufus) In South Dakota: Using Harvested Samples To Inform Management, Stuart C. Fetherston
Electronic Theses and Dissertations
A primary objective of state wildlife management agencies is to establish sustainable harvest levels for game species. An important component of sustainable management practices is the identification of appropriate management units for monitoring and establishing defensible harvest levels. Across their range, bobcats (Lynx rufus) are an ecologically and economically important species. Despite their importance, little is known about the genetic structure of bobcat populations in South Dakota. We used tissue sampled from n = 1,215 bobcats harvested across the state from 2014–2019 to infer population genetic structure. We used 17 microsatellite loci and a sex identification marker to assign individuals …
Analysis Of Subtelomeric Rextal Assemblies Using Quast, Tunazzina Islam, Desh Ranjan, Mohammad Zubair, Eleanor Young, Ming Xiao, Harold Riethman
Analysis Of Subtelomeric Rextal Assemblies Using Quast, Tunazzina Islam, Desh Ranjan, Mohammad Zubair, Eleanor Young, Ming Xiao, Harold Riethman
Computer Science Faculty Publications
Genomic regions of high segmental duplication content and/or structural variation have led to gaps and misassemblies in the human reference sequence, and are refractory to assembly from whole-genome short-read datasets. Human subtelomere regions are highly enriched in both segmental duplication content and structural variations, and as a consequence are both impossible to assemble accurately and highly variable from individual to individual. Recently, we developed a pipeline for improved region-specific assembly called Regional Extension of Assemblies Using Linked-Reads (REXTAL). In this study, we evaluate REXTAL and genome-wide assembly (Supernova) approaches on 10X Genomics linked-reads data sets partitioned and barcoded using the …
Spermidine Rescued Ptpn2/22 Function In Crispr-Cas9-Edited T-Cells With Ptpn2/22 Snps Linked To Crohn's Disease And Rheumatoid Arthritis, Ameera Shaw
Electronic Theses and Dissertations, 2020-2023
Inflammatory autoimmune diseases like Crohn's Disease (CD) and Rheumatoid Arthritis (RA) share some of the same single nucleotide polymorphisms (SNPs) in protein tyrosine phosphatase non-receptor types 2 and 22 (PTPN2/22), which contribute to their pathogenesis. In clinical CD and RA samples, PTPN2:rs478582 and PTPN22:rs2476601 were found to exacerbate a number of inflammatory processes associated with CD and RA. To confirm the role of these SNPs in CD and RA pathogenesis, CRISPR-Cas9 was used to induce the SNPs in T-cells. Cells were also treated with the naturally occurring polyamine, spermidine, to restore PTPN2/22 function and reverse the inflammatory effects of the …
Composition And Homology In The Taxonomic Classification Of Escherichia Coli, Tanya Irani
Composition And Homology In The Taxonomic Classification Of Escherichia Coli, Tanya Irani
Theses and Dissertations (Comprehensive)
As new techniques have been introduced, specifically the possibility of complete genome sequencing, better methods of defining bacterial species have also been proposed. One of the most recently proposed methods, using bioinformatic techniques, is to calculate the average nucleotide identity (ANI) between the homologous genome segments of different isolates. Another method for species discrimination that has been tested successfully is the similarity of DNA compositional signatures. However, in a recent update, DNA signatures split the available Escherichia coli complete genomes into three groups. To check if this result was consistent with such genomes belonging to different species, we tested methods …
In Silico Investigation Of Cardiac Arrhythmia Susceptibility In Long Qt Phenotype, Anthony Owusu-Mensah, Victoria Lam, Bright Tsevi, Michel Audette, Makarand Deo
In Silico Investigation Of Cardiac Arrhythmia Susceptibility In Long Qt Phenotype, Anthony Owusu-Mensah, Victoria Lam, Bright Tsevi, Michel Audette, Makarand Deo
Electrical & Computer Engineering Faculty Publications
Long QT Syndrome (LQTS) is associated with cardiac arrhythmia and sudden cardiac death. The Long QT Type 2 (LQT2) phenotype, which accounts for 35–40 % of all LQTS patients, is caused by mutations in HERG gene. The mechanisms of arrhythmia in presence of LQT2 conditions are not fully understood. We utilized anatomically and electrophysiologically realistic numerical simulations to elucidate the mechanisms of arrhythmia initiation in presence of blockade in rapid component of delayed rectifier potassium current, IKr. We utilized a 3D finite element model of rabbit ventricles integrated with His-purkinje network to simulate whole heart response to LQT2 …
The Origin Of Novel Trait Inferred From Transcriptomic Analysis And A Targeted Gene Approach In The Beetle Horns., Naureen Fatima
The Origin Of Novel Trait Inferred From Transcriptomic Analysis And A Targeted Gene Approach In The Beetle Horns., Naureen Fatima
Graduate Theses, Dissertations, and Problem Reports (ETD)
The origin of the evolutionary new trait (evolutionary novelty) and its subsequent evolution is of great interest for biologists in various fields, and beetle horns have been used to address this fundamental biological question. Previous studies on one of the horned beetle species, Onthophagus taurus, that utilized comparative gene expression analyses, suggested legs to be a strong candidate of the origin of horns. At the same time, their horns are secondary sexual traits whose development is regulated by the same gene (doublesex) as genitalia, which also originates from paired appendages such as legs. However, little is known …
Population Genetics Of A Reintroduced Fisher (Pekania Pennanti) Population In West Virginia, Caroline E. Harms
Population Genetics Of A Reintroduced Fisher (Pekania Pennanti) Population In West Virginia, Caroline E. Harms
Graduate Theses, Dissertations, and Problem Reports (ETD)
Fishers (Pekania pennanti) were reintroduced in West Virginia in 1969 with no population wide genetic analysis ever having been conducted. Genetic analysis of reintroduced populations is vital to assess genetic diversity as an indicative of population viability. My objective was to collect fisher samples throughout West Virginia, nearby states where fisher may be migrating (PA and NY), and the New Hampshire source population to provide a full genetic interpretation of the reintroduced West Virginia population. Genetic analysis was used to measure genetic diversity, admixture or delineation of subpopulations, and effective population size. Sample location and genetic data were …
Open Problems In Extracellular Rna Data Analysis: Insights From An Ercc Online Workshop, Roger P Alexander, Robert R Kitchen, Juan Pablo Tosar, Matthew Roth, Pieter Mestdagh, Klaas E A Max, Joel Rozowsky, Karolina Elżbieta Kaczor-Urbanowicz, Justin Chang, Leonora Balaj, Bojan Losic, Eric L Van Nostrand, Emily Laplante, Bogdan Mateescu, Brian S White, Rongshan Yu, Aleksander Milosavljevic, Gustavo Stolovitzky, Ryan M Spengler
Open Problems In Extracellular Rna Data Analysis: Insights From An Ercc Online Workshop, Roger P Alexander, Robert R Kitchen, Juan Pablo Tosar, Matthew Roth, Pieter Mestdagh, Klaas E A Max, Joel Rozowsky, Karolina Elżbieta Kaczor-Urbanowicz, Justin Chang, Leonora Balaj, Bojan Losic, Eric L Van Nostrand, Emily Laplante, Bogdan Mateescu, Brian S White, Rongshan Yu, Aleksander Milosavljevic, Gustavo Stolovitzky, Ryan M Spengler
Faculty, Staff and Students Publications
We now know RNA can survive the harsh environment of biofluids when encapsulated in vesicles or by associating with lipoproteins or RNA binding proteins. These extracellular RNA (exRNA) play a role in intercellular signaling, serve as biomarkers of disease, and form the basis of new strategies for disease treatment. The Extracellular RNA Communication Consortium (ERCC) hosted a two-day online workshop (April 19–20, 2021) on the unique challenges of exRNA data analysis. The goal was to foster an open dialog about best practices and discuss open problems in the field, focusing initially on small exRNA sequencing data. Video recordings of workshop …
Novel Mutations In The Gtpbp3 Gene For Mitochondrial Disease And Characteristics Of Related Phenotypic Spectrum: The First Three Cases From China, Hui-Ming Yan, Zhi-Mei Liu, Bei Cao, Victor Wei Zhang, Yi-Duo He, Zheng-Jun Jia, Hui Xi, Jing Liu, Fang Fang, Hua Wang
Novel Mutations In The Gtpbp3 Gene For Mitochondrial Disease And Characteristics Of Related Phenotypic Spectrum: The First Three Cases From China, Hui-Ming Yan, Zhi-Mei Liu, Bei Cao, Victor Wei Zhang, Yi-Duo He, Zheng-Jun Jia, Hui Xi, Jing Liu, Fang Fang, Hua Wang
Faculty, Staff and Students Publications
Combined Oxidative Phosphorylation Deficiency 23 (COXPD23) caused by mutations in GTPBP3 gene is a rare mitochondrial disease, and this disorder identified from the Chinese population has not been described thus far. Here, we report a case series of three patients with COXPD23 caused by GTPBP3 mutations, from a severe to a mild phenotype. The main clinical features of these patients include lactic acidosis, myocardial damage, and neurologic symptoms. Whole genome sequencing and targeted panels of candidate human mitochondrial genome revealed that patient 1 was a compound heterozygote with novel mutations c.413C > T (p. A138V) and c.509_510del (p. E170Gfs∗42) in GTPBP3 …