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 20 of 321 for “"genotypic"”.
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Phenotypic and Genotypic characterisation of Bacillus sporothermodurans
… this study was to determine whether there was a genotypic difference in the structure of B. sporothermodurans spores between those strains isolated from UHT strains and those from other sources (i.e. raw milk, feed concentrate and silage). Due to the fact that B. sporothermodurans spores are …
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Phenotypic and genotypic analysis of intestinal spirochacies
… amongst S. pilosicoli isolates. In several cases genotypically similar isolates originated from different animals suggesting that cross-species transmission may have occurred. The Caco-2 and Caco-21HT29 cell models have been proposed as potentially realistic models of intestinal infection. …
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Phenotypic and genotypic characterisation of Clostridium Difficile
… was to investigate both the phenotypic and genotypic characteristics of two populations of toxigenic clinical isolates of C. difficile which were recovered from two separate hospital trusts within the UK. Phenotypic characterisation of the isolates was undertaken using analytical profile …
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Genotypic and Environmental Effects on Soybean Canopy Photosynthesis
Three studies were conducted to identify environmental and genetic factors controlling soybean (Glycine max (L.) Merr.) canopy photosynthetic CO$\sb2$-exchange rates (CER) using automatic mobile transparent chambers. In the first study, CER from chlorophyll-deficient, near-isogenic lines were …
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Phenotypic and genotypic characterization of Thalassiosira pseudonana (Bacillariophyceae) strains
… although variation in production was observed. Genotypic characterization based on DNA barcode genes revealed that the strains were identical; however, Amplified Fragment Length Polymorphism (AFLP) analyses indicated that the axenic strains belonged to three different clusters. Although the …
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Quantifying genotypic and environmental factors affecting potato canopy growth
There is a high degree of variation in potato yield which may contribute to the current UK yield plateau. There is a strong correlation between light intercepted, total biomass produced and biomass partitioned to the tubers as yield. Variation in potato canopy growth can be analysed using …
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Genotypic and Phenotypic Determinants of Japanese Encephalitis Virus Geographical Expansion
… objective of this dissertation was to elucidate genotypic and phenotypic determinants of JEV geographical expansion by relating differences in the molecular epidemiology of virus isolates to the phenotypic properties of the isolates through in vitro and in vivo investigations. Phylogeographic …
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Genotypic variation in Actinidia deliciosa fruit size and carbohydrate content
In a global and increasingly competitive fresh produce market, more attention is being given to fruit quality traits and consumer satisfaction. Kiwifruit occupies a niche position in the worldwide market, when compared to apples, oranges or bananas. It is a fruit with extraordinarily good …
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Phylogenetic approaches for quantifying the genotypic diversity of influenza viruses
… need to characterize the observed and unobserved genotypic diversity of the internal genes of avian influenza viruses across the global influenza ecosystem. However, this effort has been limited by the lack of a pansubtypic nomenclature to partition and describe the complex lineage distribution of …
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Phenotypic and Genotypic Models of Streptococcal Colonization of the Human Tonsil
… determine if phenotype might be informed by the genotypic profile. During the course of this work, we introduce new palatine tonsil tumorderived cell lines for their novel usefulness as a model for studying pharyngitis. Using primary tonsil epithelial cells from non-malignant patient samples to …
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Enhancing Vallisneria americana restoration using knowledge of genotypic and phenotypic diversity
… across the species' distribution in the Potomac. Genotypic (0.1-1.0) and allelic diversity (1.5-5.5), observed heterozygosity (0.34-0.72), and relatedness (-0.06-1.00) varied greatly along rivers and across latitude. Hudson V. americana had the lowest genetic diversity and Potomac had the highest. …
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Genotypic and Phenotypic Variation of the Florida Scrub Lizard (Sceloporus Woodi)
… of locomotion. In the 2nd chapter I examine the genotypic variation of S. woodi in the Ocala National Forest. The loss of natural habitat due to fragmentation is a major threat to the conservation of species. The Florida scrub lizard (Sceloporus woodi) is restricted to open, sunny, scrub habitat, …
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Phenotypic, Genotypic, and Pathogenic Evaluation of E. coli ST131 Clinical Isolates
Since their identification in 2008, E. coli ST131 isolates have become a major cause of cystitis and pyelonephritis. However, these strains are not known to encode different, or increased numbers of virulence factors compared to other sequence types of pathogenic E. coli. To date, no data in the …
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The role of genotypic diversity in stabilizing plant productivity in variable environments
… both conventional and subsistence agriculture. Genotypic diversity among accessions of A. thaliana buffered against abiotic stress, specifically nutrient and heat stress, and increased yield stability through compensation. The role of compensatory interactions in genotypic mixtures was supported …
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A Genotypic Comparison of Staphylococcus lugdunensis Clinical Isolates of Diverse Geographic Origin
At the present time, little is known about the newly described coagulase negative staphylococcus, Staphylococcus lagdunensis. However, this organism has been associated with serious invasive infections and can easily be mistaken for Staphylococcus aureus both clinically and phenotypically. To learn …
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