Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 17 of 17 for “"Multiple resistance"”.
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Molecular Definition of Cytochrome P450 -Mediated Multiple Resistance in Helicoverpa Zea
… for the acquisition of insecticide resistance. To evaluate this hypothesis, I conducted a series of experiments with Helicoverpa zea, a polyphagous noctuid of economic importance. Studies at the population level demonstrated that exposure to xanthotoxin, a linear furanocoumarin, …
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Reduced Chemical Weed Control Options in Virginia for Corn and Turfgrass and Characterization of Sorghum halepense Expressing Multiple Resistance to Nicosulfuron and Glyphosate
… systems requires the judicious use of multiple weed control tactics and prevents over-reliance on any one tactic. In this context, sustainable weed management plays a critical role in the mitigation of one of agriculture's most pressing problems- herbicide resistance. Research conducted …
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Field induced switching in multilayer rhombic magnetic rings
… digital logic, and sensors through the use of multiple resistance states exhibited within these devices. The magnetization reversal characteristics of these structures are explored in an effort to fully understand interactions occurring within the devices and their resulting effect on giant …
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Patterns of antimicrobial resistance among enteric bacteria found in multi-site group-level cohorts of humans and swine
The prevalence of antimicrobial resistance (AMR) phenotypes and genotypic characteristics (Class 1 integron and AMR gene cassettes) in commensal Escherichia coli (EC) and vancomycin resistant Enterococcus faecium (EF) isolated from humans and swine in a semi-closed, integrated farrow-to-fork …
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Non-target-site resistance to ALS inhibitors in waterhemp
… cropping region. The evolution of herbicide resistance and multiple resistance mechanisms within the species is one of the major properties making it difficult to control, and ALS-resistant waterhemp populations have been found and studied considerably. A waterhemp population (designated MCR) …
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Signal Transduction and Transcriptional Regulation Pathways Essential for Azole Resistance in Candida albicans
… UPC2 activating mutations contribute to azole resistance, whereas disruption increases azole susceptibility. We further investigated the relationship of UPC2 to fluconazole susceptibility, particularly in azole-resistant strains. In addition to the reduced fluconazole minimum inhibitory …
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The Universal Stress Proteins of Micrococcus Luteus Are Metabolic Regulators That Confer Resistance to a Diverse Set of Stress Factors
… transcriptome revealed a dysregulation of multiple resistance mechanisms by failing to suppress transposable elements, failing to downregulate metabolic processes, and loss of Rho transcription factor control through failure to upregulate NusG. Characterization of the Usp616 revealed that …
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Computational dissection and prediction of cancer immunotherapy response
… signature are associated with immunotherapy resistance, and we reasoned targeting this signature with acetylation-reader bromodomain inhibitors would allow suppression of multiple resistance mechanisms at once. We show that bromodomain inhibitors exhibit considerable synergism with anti-PD1 …
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QTL discovery for Japanese beetle resistance in aphid-resistant germplasm, stacking aphid-resistant genes, and metabolite profiling studies in soybean
… soybean aphid (<Aphis glycines> Matsumura) resistance genes into soybean [<Glycine max >(L.) Merr.] cultivars, it is important to retain resistance to insect defoliators. In order to improve MSU aphid-resistant germplasm for resistance to Japanese beetle (<Popillia japonica> Newman), a …
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Liberation Textualities: Decoloniality, Feminism, and Aesthetics in Anglophone Caribbean and Indigenous North American Resistance Literature
… American women and an expanded framework of resistance literature. I argue that resistance itself is in fact a broad tradition within which many texts, representations, and ideas intersect. While this project is sensitive to the profound historical, socioeconomic, and cultural differences …
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Structural characterization of superbug proteins involved in regulating beta-lactam resistance
… by fueling the evolution and dissemination of multiple resistance mechanisms, including: (1) production of hydrolytic β-lactamase enzymes that inactivate β-lactams, (2) expression of PBPs with low-affinity for β-lactams and (3) overexpression of multidrug efflux pumps which actively expunge …
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Defects and Interface Engineering of SnO2 Based Nanomaterials for High Performance Memory Applications
… to meet these requirements. By achieving multiple resistance states in metal oxides, the memory capacity can be multiplied at the same cell size hence the development of metal oxide switching materials is important for achieving high-performance memory devices. In this thesis, a …
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Investigating Damage, Genetic Correlations, and Natural Selection to Understand Multiple Plant Defenses in Passiflora incarnata
<p>Plants commonly produce multiple, seemingly redundant defenses, but the reasons for this are poorly understood. The specificity of defenses to particular herbivores could drive investment in multiple defenses. Alternatively, genetic correlations between defenses could lead to their joint …
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Impacts of organic and conventional neurotoxic pesticides on a pest and a pollinator in almond agroecosystems (Prunus dulcis)
… or diethyl maleate. Because P450-mediated resistance to the pyrethroid insecticide bifenthrin has been reported in Kern County, California, determining the range of pesticides metabolized by P450s is critical for making management decisions designed to delay widespread cross- and …
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INTEGRATING FUNGICIDE RESISTANCE MONITORING AND FORECASTING MODELS FOR THE PRECISION MANAGEMENT OF GRAPEVINE DOWNY MILDEW
… systems. Within this context, fungicide resistance has become a key constraint to the sustainable management of grapevine diseases, particularly for P. viticola, which is classified as a high-risk pathogen for resistance development due to its biological characteristics. The repeated and …
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Pinnipeds as sentinels of antimicrobial resistance: mapping antimicrobial resistance genes in the waters of the United Kingdom
Antimicrobial resistance (AMR) is a continual and growing threat to human and animal health. There is a lack of information about environmental reservoirs of AMR, many of which feed into the marine habitat. Pinnipeds are often used as sentinels of ocean health because they are long lived, apex …
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A waterhemp saga: Seed production, genetics, hybridization, and the creation and discovery of quad-stack individuals
… of this species is its propensity to evolve resistance to herbicides—a feat which it has now accomplished for herbicides with four different modes of action, with the evolution of resistance to other herbicide modes of action expected in the future. Options for chemical control of this …