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 29 for “"Trichome"”.
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The regulation of genes involved in trichome development
… occur in flowering plants. The leaf hairs, or trichomes, of Arabidopsis thaliana are macroscopic single cells that have been used as a model system for cell fate determination, cell expansion, cell cycle regulation, cell wall deposition, as well as other processes. Initiation of the trichome …
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Isolation and Characterization of Two siamese Phenotypic Modifiers and Their Role in Endoreplication and Trichome Development
… gene of Arabidopsis thaliana result in reduced trichome branching without altering the ploidy level of trichomes. This implies that ENS1 regulates trichome branching in an endoreplication-independent manner. Mutations in ENS1 also enhance the multicellularity of sim mutant trichomes indicating …
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Gene expression profiling in different stages of development of Arabidopsis thaliana leaftrichomes at the single cell level
… during life cycle of A. thaliana leaf hair cell (trichome) were explored in this work. After onset of trichome development this cell changes its cell cycle: it starts endoreduplication (a modified cell cycle in which DNA replication continues in the absence of mitosis and cytokinesis). This makes …
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Gene expression and biochemistry of isoprenoid biosynthesis in the glandular secretory trichomes of Artemisia annua
… possesses small 10-cell biseriate glandular trichomes on the surface of its aerial tissues. These trichomes were isolated from floral tissue using a Bead Beater based method. Expression patterns of expressed sequence tags from a trichome library whose Basic Local Alignment Search Tool (BLAST) …
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Characterization of acifluorfen selectivity mechanisms in tomato and related Lycopersicon species
… rating after treatment. The relationship of trichome and stomate density, quantity of epicuticular wax and cuticle, and wax composition to acifluorfen tolerance was determined. There was no correlation between trichome density and acifluorfen tolerance or susceptibility, however, an inverse …
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The Potato Leafhopper, Empoasca Fabae, Soybean Pubescence, and Hopperburn Resistance
… cv. 'Clark' differing in the nature of the trichome cover.
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DNA Methylation and Genetic Divergence Associated with an Inducible Defensive Response in Mimulus guttatus
… by increasing the number of hair-like glandular trichomes, a putative defensive trait that reduces the magnitude of damage by insects. This plastic response is transgenerationally inherited in a way that is sensitive to genome-wide demethylation when transmitted through the maternal but not the …
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A CFD Study of Pollution Dispersion in Street Canyon and Effects of Leaf Hair on PM2.5 Deposition
… part of this thesis investigates the impact of trichome morphology and wind speed on the deposition of 0.3 μm and 1.0 μm particles on leaves. Using the one-way coupling approach to predict the fluid-particle interactions with the assumption that all particles that impact the leaf or trichome …
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Transgenerational Plasticity is Sex-dependent and Persistent in Yellow Moneyflower (Mimulus guttatus)
… induction of increased glandular trichome production in response to simulated insect damage. Here we test for differences between maternal and paternal transmission of this response and examine its persistence over five generations following damage. Maternal and paternal damage …
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Identification and analysis of genes involved in cotton fibre initiation.
… extensive genetic knowledge of Arabidopsis leaf trichomes could aid in the elucidation of the genetic mechanisms controlling cotton fibre differentiation. Trichomes are small hairs on the plant surface, originating from single epidermal cells in a developmental process that appears very similar …
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Genetic mapping and molecular characterization of tbr1 mutant in Arabidopsis thaliana
Arabidopsis thaliana trichomes exhibit strong birefringence under polarized light, a characteristic of cell walls containing large amounts of highly ordered cellulose microfibrils. The tbr1 mutant of Arabidopsis lacks trichome birefringence and is deficient in secondary cell wall cellulose …
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Abiotic stressors in the dogwood anthracnose complex
… Discula destructiva conidia may germinate at trichome bases where damage may cause the leaching of nutrients. Also, the difference in stomatal damage may account, in part, for differences in disease susceptibility. Cardinal growth temperatures and response to thermal stress regimes were …
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The genetics of parallel evolution: a case study using thermal and non-thermal ecotypes of Mimulus guttatus from Yellowstone National Park
… system, and two more putatively adaptive traits; trichome production and pigment patterning. I employ a targeted comparative quantitative trait loci (QTL) analysis to ask whether the genetics underlying the transitions I observe in YNP are the same or different compared to parallel phenotypic …
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The genetics of parallel evolution: a case study using thermal and non-thermal ecotypes of Mimulus guttatus from Yellowstone National Park
… system, and two more putatively adaptive traits; trichome production and pigment patterning. I employ a targeted comparative quantitative trait loci (QTL) analysis to ask whether the genetics underlying the transitions I observe in YNP are the same or different compared to parallel phenotypic …
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Understanding How Whole Genome Duplication in Plants Impacts Herbivore-plant Interactions
… performance corresponded with changes in trichome morphology, an important physical defense against insect herbivores. The results corroborated the findings of Chapter 1 by showing that preference of both herbivore species was unaffected by WGD in their host plant. There were, however, …
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Studies in the Dryopteris inaequalis (Dryopteridaceae) complex
… cytology is used as a basis for classification. Trichome characters, indusium, spore and guard-cell sizes proved to be of great taxonomic utility in defining species and cytotypes in the complex. Guard-cell and spore sizes in the different taxa are positively correlated to ploidal level. …
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Testing Subspecies Limits in <i>Monardella Villosa</i>
… on the basis of leaf thickness, shape, and trichome characteristics, yet many intermediates are known. We investigated morphological differences in natural populations of two subspecies (M. v. subsp. villosa and M. v. subsp. franciscana) in the Scott Creek watershed, north of Davenport, in …
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Fine structure of the ovipositor and studies of feeding and oviposition site selection by the serpentine leafminer, Liriomyza trifolii (Burgess) (Diptera: Agromyzidae)
… on the plant, and negatively related to leaf trichome density. Spatial distribution of feeding and oviposition sites within plants under LD was variable, and no specific pattern of preference was discerned. An experiment to determine the effect of plant growth regulators on site selection by …
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Interaction Between Insects and Apple (Malus X Domestica Borkh.): Insect Behavior, Genotypic Preference, and Plant Phenolics With Emphasis on Japanese Beetle (Popillia Japonica Newman)
… host plants in an artificial environment. Trichome density appeared different among three genotypes. 'York', the non-preferred genotype, had highest specific leaf weight and concentration of phloridzin, a feeding repellent. 'Liberty' the preferred genotype, had the lowest specific leaf …
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Estudo histopatológico da polpa de dentes unirradiculares de humanos, portadores de doença periodontal envolvendo o ápice radicular
… stained with Hematoxylin - Eosin and Gomore's trichome, and examined under the microscope. Within the limites of this investigation, we can conclude that: 1) ln 100 % of the cases, the coronal pulp showed to be fo soft connective tissue; 2) ln 23 % of the cases, fibroses was present at the …
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