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.
Results
Showing 1 to 20 of 27 for “"Nutrient Stress"”.
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Characterizing Low Nutrient Stress Resistance in Crop Sunflowers (Helianthus annus)
… met global food production demands, but abiotic stresses are predicted to decrease crop yield in the context of climate change. In order to prevent losses in crop yield under conditions of increasing environmental stress and to reduce environmental damage from unsustainable farming practices, …
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Shear flow modulates oxidative and nutrient stress in Pseudomonas aeruginosa
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2027-05-01
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The Role of Resveratrol and Sirtuin1 in Skeletal Muscle Under a Nutrient Stress
… mass is extremely sensitive to alterations in nutrients [reviewed in (Sharples et al., 2015)] and as such has been reported to reduce regenerative potential and increase atrophy in skeletal muscle cells and myotubes. Interestingly, the activation of Sirtuin1 (SIRT1) has been reported during DR …
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Marine microbial intact polar diacylglycerolipids and their application in the study of nutrient stress and bacterial production
… but also a dynamic role in defining planktonic nutrient needs and cellular C:N:P ratios in the environment. Additionally, microcosm incubations were amended with phosphate and ammonium, and in the course of several days this elicited a shift in the ratios of IP-DAGs. This study was the first to …
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Marine microbial intact polar diacylglycerolipids and their application in the study of nutrient stress and bacterial production
… but also a dynamic role in defining planktonic nutrient needs and cellular C:N:P ratios in the environment. Additionally, microcosm incubations were amended with phosphate and ammonium, and in the course of several days this elicited a shift in the ratios of IP-DAGs. This study was the first to …
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Impaired Ulk1 Ser555 Phosphorylation Promotes Amino Acid Reliance and Links Mitochondrial Inefficiency to Systemic Metabolic Inflexibility
… between energetic substrates in response to nutrient availability—is essential for systemic energy balance and protection against metabolic disease. Loss of this adaptive capacity contributes to metabolic diseases marked by obesity, insulin resistance, and dyslipidemia, elevating the risk of …
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Towards extending coarse-grained circuit-host modeling to complex environments
… mechanistic modeling of chloramphenicol and nutrient stress.
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Satellite-derived fluorescence quantum yields as indicators of phytoplankton photophysiology
… research has demonstrated the effects of both nutrient stress and photoacclimation on fluorescence yield. Here, a novel satellite product comprising seven years of fluorescence quantum yields, derived from MODIS/Aqua normalized fluorescence line heights and corrected for pigment packaging …
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Response of Arabidopsis to bacterial presence under iron stress
… extreme cases, plant death. In response to these stressful conditions, microbial interactions can lead to improved plant health, however the mechanism by which this occurs is not understood. In this study we cocultured an Arabidopsis MTP8 knockout line, which is susceptible to iron stress, as well …
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Investigating Hfq-dependent Small Regulatory RNA, Bsr34, and Its Roles in Brucella abortus Physiology and Pathogenicity
… regulators of bacterial virulence and stress adaptation, yet remain largely uncharacterized in Brucella. Following the identification of Hfq-associated sRNA candidates in B. suis, this study provides the first functional characterization of Bsr34, an Hfq-dependent sRNA in B. abortus …
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Global characterization of the Pho regulon in Caulobacter crescentus
… offers insight into how Caulobacter responds to nutrient stress, as well as a better understanding of the connectivity and output of the phosphate limitation response pathway.
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The Effect of Constant Relative Growth Rate Versus Constant Specific Growth Rate on Oocystis SP
… the cultures grown most likely did not undergo nutrient stress except during GS1 at 20°C. Given the results under these conditions, neither GS1 nor GS2 is better than the other at keeping the biomass composition steady across the temperatures or for increasing the biomass and lipid during …
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Molecular Characterization of Arabidopsis thaliana Snf1-Related Kinase 1
Plants have molecular mechanisms for nutrient-related stress responses; however, their exact regulation remains unclear. For example, the integral myo-inositol (inositol) signal transduction pathway allows Arabidopsis thaliana to sense and respond to changes in environmental stimuli, such as water, …
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Enhancement of Carotenoid Biosynthesis and Antioxidant Responses in Diatoms by Light Modulation
… network in lowering or repairing light stress or damage is poorly understood. <br></br><br></br> My thesis consists of the concomitant investigation of the photoprotective and antioxidant network functioning in the coastal diatom <i>Skeletonema marinoi</i>, and during an experiment at …
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An investigation of the influence of drought and other soil factors on the structure of a calcareous grassland.
… of drought with soil heterogeneity and mineral nutrient stress. Efforts have been made to differentiate between mechanisms of drought tolerance and drought avoidance, and this has allowed some assessment of the contribution of diversity in morphology, life history and physiology to the …
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Biophysical responses of lymphocytes to environmental stress
… promote survival under conditions of limited nutrient availability. We first investigate the relationship between cell density, volume, buoyant mass, and passage time through a narrow constriction under a variety of environmental stresses. Osmotic stress significantly affects density and …
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Production of biofuels and biodegradable plastics from common waste substrates in engineered Ralstonia eutropha
… from common waste streams. When experiencing nutrient stress in the presence of high carbons, R. eutropha can store carbon and energy in the form of polyhydroxyalkanoates (PHAs), a biodegradable and biocompatible plastic. In this thesis, the native carbon storage system was genetically …
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Microbial Genome Evolution Due to Multifaceted Symbiosis within the Tsetse Fly (Diptera: Glossinidae)
… My work first examines the importance of nutrient provisioning, specifically thiamine (Vitamin B1), for the maintenance of a stable symbiotic environment within the tsetse host. These studies demonstrated that Sodalis required exogenous thiamine for proliferation due to the erosion of …
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Development of an eicosapentaenoic acid production bioprocess using an indigenous microalgal isolate
… for superior EPA production in both growth and stress conditions, using both fluorescent microscopy and flask studies. Studies investigated increasing biomass, improving EPA content, and optimising overall EPA productivity in a multi-stage bioprocess. Growth studies found self-regulatory systems …
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Regulation of yeast development by mRNA methylation
… the yeast Saccharomyces cerevisiae experiencing nutrient limitation undergo a restriction of cellular potential and commitment in which the cells cease vegetative, mitotic growth and commit to meiosis. We show that the period prior to commitment can be divided further into two distinct phases: an …
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