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 39 for “"biotic stress"”.
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ROLE FOR HYDROGEN PEROXIDE DURING ABIOTIC AND BIOTIC STRESS SIGNALING IN PLANTS
… growth, development and yield. Common for such stress conditions is that they induce the accumulation of harmful reactive oxygen species (ROS). ROS, such as hydrogen peroxide (H2O2), are now also considered to be important signal molecules that regulate the defense response of plants to stress. …
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Genic copy number variation associated with abiotic/biotic stress among a set of progenitors of contemporary maize germplasm
… variation occurring in genes associated with abiotic/biotic stress tolerance. To facilitate SV discovery those read sequences not aligning to B73 reference genome were first assembled and then bioinformatically characterized. This resulted in the discovery of 37 putative novel resistance genes …
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An Analysis of the Arabidopsis Aquaporin TIP1;1 and Analysis of Stress Response Signaling in Arabidopsis
The stress response pathways in Arabidopsis were studied, using publically available Affymetrix ATH1 microarray data. The salt stress signaling pathways were dissected, by comparing the salt stress response to other abiotic/biotic stress responses or the response to plant hormones. The analysis, …
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A Genomic Assessment of Vicia Villosa Roth: Evaluation by Flow Cytometry, Canonical Discriminant Analysis, and Replicated cDNA Microarray Analysis
… targets were hybridized to 142 cDNA clones of biotic stress genes and gene sequences of soybean that were robotically spotted onto aminosilicated slides. The microarray data was analyzed using the individual fluorescence intensities to fit two statistical models with a mixed model analysis of …
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The Role of Arabidopsis thaliana Annexins 1, 2 and 4 in Extracellular ATP Signalling
… of eATP in plants occurs in response to biotic and abiotic stresses. eATP causes downstream responses such as increase in cytosolic free calcium ([Ca$^{2+}$]$_{cyt}$), reactive oxygen species (ROS), nitric oxide (NO) and phosphatidic acid (PA). The identification of $\it{Arabidopsis}$ …
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The role of genotypic diversity in stabilizing plant productivity in variable environments
… 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 by experiments investigating the ability of A. thaliana genotypic …
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The Arabidopsis thaliana Heat Shock Transcription Factor A1b Transcriptional Regulatory Network
… cellular processes to cope with environmental stress conditions, which include the initiation of complex transcriptional regulatory circuits. The heat shock transcription factors (HSFs) have been shown to be central regulators of plant responses to abiotic and biotic stress conditions. However, …
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Evolutionary conservation and characterization of the metazoan amino acid response
Signaling pathways that respond to stress and sense nutrient availability are highly conserved throughout eukaryotes. In mammalian cells, these pathways have evolved to regulate immune responses, representing important therapeutic targets. Interestingly, components of these pathways can be found in …
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Characterization of KPAP, a Novel Pokeweed Antiviral Protein Isoform
… as other isoforms under phytohormone stimulated biotic stress, however, they showed a slight decrease in drought. In this study, I provide preliminary groundwork on the KPAP gene model, expression in abiotic stresses, protein structure, depurination activity and potential binding arrangement on …
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Feasibility study using remote sensing technologies to improve zonal vineyard management
… specific zones of canopy size, water stress, yield, some superior fruit compositions, and the resulting wine sensory attributes within a single vineyard site. This study also confirmed that the mechanism of plant defense systems against biotic stress could have impacts on the spectral …
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Evolutionary conservation and characterization of the metazoan amino acid response
Signaling pathways that respond to stress and sense nutrient availability are highly conserved throughout eukaryotes. In mammalian cells, these pathways have evolved to regulate immune responses, representing important therapeutic targets. Interestingly, components of these pathways can be found in …
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Transcriptional responses of Eucalyptus clones to the gall wasp, Leptocybe invasa
… in the response of plants to a wide variety of stresses. This means that it is possible to develop a hypothetical model of the response of Eucalyptus to L. invasa by incorporating results from studies investigating the response of other plant species to insect pests. This model can then be …
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Design and Application of Probes of Novel Bioactivities
… signals, such as the drug clofibrate and biotic stress, were studied. Confocal microscopy enabled the dynamics of the peroxisome to be visualised in a variety of cell types and species, including both plant and mammalian cells. In addition to this computational studies were carried out to …
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Investigating the effects of genetic variation on heterochromatic crossover events in Arabidopsis thaliana
… were evaluated using natural variation and biotic stress. Significant crossover frequency variation was recorded throughout the genome in Col- 0/relict F1 hybrids. A diverse panel of Arabidopsis accessions further investigated the influence of *cis* effects on heterochromatic crossover …
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Biochemical and Functional Characterization of Induced Terpene Formation in Arabidopsis Roots
… and induced chemical defense mechanisms against biotic stress. Emission of volatile compounds from plants facilitates interactions with both beneficial and pathogenic organisms. However, knowledge of the chemical defense in roots is still limited. In this study, we have examined the root-specific …
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Effects of several abiotic and biotic factors and plant hormones on growth, morophology, and camptothecin accumulation in Camptotheca acuminata seedlings
… dissertation seeks to explore the effects of abiotic factors [nitrogen (N), sodium chloride (NaCl), and ultraviolet (UV) light], biotic factor [acetylsalicylic acid (ASA)], and plant hormones [benzyl adenine (BA) and naphthalene acetic acid (NAA)] on growth, morphology, and secondary …
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An investigation of the role of Arabidopsis thaliana plant natriuretic peptide in planta
… appropriately to changes in their environment (stresses) in order to survive. Critical to survival is the maintenance of water and ion homeostasis. The mechanisms by which plants achieve this are poorly understood. Traditionally plant stress responses were thought to be communicated by five …
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Genetic analysis of cowpea (Vigna unguiculata L. WALP) agronomic variables in phosphorus limiting soil.
… been characteristically low as a result of both abiotic and biotic stresses. Among the abiotic stresses, yield losses due to phosphorus (P) deficiency is an important factor. Identification and selection of cowpea genotypes possessing suitable agronomic traits is key for cultivar design and …
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Genetic analysis of cowpea (Vigna unguiculata L. WALP) agronomic variables in phosphorus limiting soil.
… been characteristically low as a result of both abiotic and biotic stresses. Among the abiotic stresses, yield losses due to phosphorus (P) deficiency is an important factor. Identification and selection of cowpea genotypes possessing suitable agronomic traits is key for cultivar design and …
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