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Comparative Population Genomics Of Neotropical Forest Birds, Michael Gaston Harvey Jan 2015

Comparative Population Genomics Of Neotropical Forest Birds, Michael Gaston Harvey

LSU Doctoral Dissertations

The causes and implications of differences in geographic variation across species are generally poorly understood, but comparative studies have the potential to provide better understanding of what factors predispose species to undergo population divergence and whether population divergence has lasting evolutionary impacts. Here, I examined geographic variation in birds using molecular data from across the genome. I characterized genetic diversity, estimated population history, and tested for impacts of landscape history as well as ecological traits on genetic parameters. I found evidence that diverse historical processes have led to present-day genetic variation in Neotropical bird species, including divergence, population expansion, migration, …

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Uncertainty Analyses Of Climate Change Impact On Hydrologic Projections, Ehsan Beigi Jan 2015

Uncertainty Analyses Of Climate Change Impact On Hydrologic Projections, Ehsan Beigi

LSU Doctoral Dissertations

This study conducts uncertainty analysis on future region-scale hydrologic projections under the uncertain climate change projections of the IPCC Fifth and Forth Assessment Reports. The hierarchical Bayesian model averaging (HBMA) method is adopted to segregate and prioritize sources of climate projection uncertainty, obtain ensemble mean of hydrologic projection, and quantify the hydrologic projection uncertainty arising from individual uncertainty sources. This study deals with the choices of greenhouse gas (GHG) concentration trajectories, global climate models (GCMs), and GCM initial conditions as three major uncertainty sources in downscaled precipitation and temperature projections. The method is applied to investigate future hydrologic projections in …

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Rhetoric And Food: The Rise Of The Food Truck Movement, Bryan W. Moe Jan 2015

Rhetoric And Food: The Rise Of The Food Truck Movement, Bryan W. Moe

LSU Doctoral Dissertations

This analysis is an attempt to study the rise of a new mobile food medium the food truck. I examine the movement of rhetorical actors, the situation, the audiences, and discourses created and sustained through rhetorical practices. These include looking into contemporary controversies, the history and storytelling that helps to convey identity, a new aesthetic experience created by the medium, and specifically their sophistic character and rhetoric helping them speak on issues of social justice and change. To understand these texts, I examine each of them in light of their rhetorical situation and the convergence of a multitude of kairotic …

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Cellulose Nanofibers From Energycane Bagasse And Their Applications In Core-Shell Structured Hydrogels, Yiying Yue Jan 2015

Cellulose Nanofibers From Energycane Bagasse And Their Applications In Core-Shell Structured Hydrogels, Yiying Yue

LSU Doctoral Dissertations

Cellulose fibers (Cellulose I, cellulose II and cellulose I/II Hybrid fibers) were successfully extracted from energycane bagasse by using a combined NaOH and NaClO2 treatment. After the delignification process, most lignin and hemicellulose were removed with a 27.4wt% yield of cellulose fibers, and the mean diameter of cellulose fibers decreased from 137±46 (raw fiber bundles) to 12±5μm (unpacked fibers). The raw bagasse fibers showed a three-step pyrolysis process, while isolated cellulose fibers had a one-step pyrolysis process. NaClO2 treatment caused the reduction of cellulose thermal stability due to its acting on lignin and cellulose. With 10h NaOH treatment, the ribbon …

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Pathogenic Enteric Viruses In Louisiana Oysters And Environmental Waters, Naim Montazeri Djouybari Jan 2015

Pathogenic Enteric Viruses In Louisiana Oysters And Environmental Waters, Naim Montazeri Djouybari

LSU Doctoral Dissertations

Norovirus (NoV) and pathogenic enteroviruses are the major causes of gastroenteritis in humans worldwide, and are usually transmitted through direct or indirect exposure to raw or partially treated sewage. Filter-feeding shellfish concentrate virus particles from the water and transmit them to humans. The occurrence of norovirus GI and GII and fecal indicators in Louisiana eastern oysters (Crassostrea virginica) and harvest water were investigated on a biweekly basis for almost one year. Only one oyster sample was positive for NoV GII at 3.5 log10 genomic copies/g digestive tissues. A stool specimen obtained from an infected individual associated with a norovirus outbreak …

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The Plagues Of Colonialism: Representations Of Suffering In The Colonial And Postcolonial Francophone Algerian Novel From 1950-1966, Benjamin Jack Sparks Jan 2015

The Plagues Of Colonialism: Representations Of Suffering In The Colonial And Postcolonial Francophone Algerian Novel From 1950-1966, Benjamin Jack Sparks

LSU Doctoral Dissertations

The indigenous Francophone Algerian novel dates from the early 1950s and since then has been a political manifestation of uneasiness. The anticolonial undertones of this literature demonstrate the sufferings and harsh realities of life under an oppressive colonial regime; meanwhile the postcolonial novel continues the representation of this suffering through the residual effects of colonialism and the impact of the bloody decolonization war. This dissertation contributes to the discourse regarding suffering as a result of French colonial oppression in light of François Hollande’s official recognition of the trauma of colonialism and the acceptance of the events from 1954-1962 as a …

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Investigation Of Potentially Hazardous Particulate Matter In Homes: Designing A Particle Filtration System, John Scott Young Jan 2015

Investigation Of Potentially Hazardous Particulate Matter In Homes: Designing A Particle Filtration System, John Scott Young

LSU Master's Theses

This research documents the process of designing a technique, materials, and method to filter particulate matter (PM) deposited on surfaces in homes. PM collected from homes in a known industrial corridor, Baton Rouge, was tested for key pollutants sorbed to their surface in an investigation of household air depositions. This research successfully designed a collection method for bulk samples and a filtration apparatus and method for collecting sized laboratory testable samples using porous membrane filtration technology. This research found relatively high concentrations of polycyclic aromatic hydrocarbons (PAHs), and the presence of some metals. This research also found the presence of …

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Metacommunity Dynamics And The Biogeography Of Central Louisiana Crayfishes, William Robert Budnick Jan 2015

Metacommunity Dynamics And The Biogeography Of Central Louisiana Crayfishes, William Robert Budnick

LSU Master's Theses

The greatest diversity of crayfishes, especially of rare Orconectes species, is found in the central Louisiana watersheds (Red River, Mermentau, Calcasieu, and Vermillion-Teche), and most species are widely distributed among the drainages. The purpose of this research was to lay groundwork for species distribution and metacommunity modelling for crayfishes in this region. To address this goal, two field studies were performed in the summers of 2013 and 2014, as well as an indoor laboratory study. Analyses of broadly distributed species indicated no significant correlations between species abundances and habitat variables nor any significant environmental gradients for those species. Within-drainage variability …

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A Quantitative Study Using Constructist Learning Activities To Connect Biology Concepts To Local Environmental Issues In A Non-Major Introductory College Biology Course, Michaelyn Broussard Jan 2015

A Quantitative Study Using Constructist Learning Activities To Connect Biology Concepts To Local Environmental Issues In A Non-Major Introductory College Biology Course, Michaelyn Broussard

LSU Doctoral Dissertations

Among the general population, there has continued to be a struggle to improve environmental literacy with the knowledge, attitude, and awareness of basic environmental issues locally and nationally. Despite efforts through many formal and informal programs, the result nationally has indicated little to no understanding of basic environmental issues (Coyle, 2005). Many educators such as Sobel (1996, 2004) and Louv (2005) have documented the lack of positive outdoor experiences or environmental behaviors. The purpose of this study was to incorporate local environmental examples through constructivist learning techniques within a general biology non-major course to promote an increase in environmental literacy …

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Functional Motifs In Siamese, A Plant Cyclin-Dependent Kinase Inhibitor, Narender Kumar Jan 2015

Functional Motifs In Siamese, A Plant Cyclin-Dependent Kinase Inhibitor, Narender Kumar

LSU Doctoral Dissertations

SIAMESE (SIM) and SIAMESE-RELATED-PROTEIN1 (SMR1), the founding members of the SIM/SMRs gene family, suppress mitosis and onset of endoreplication in the Arabidopsis’s trichome and sepal development, respectively, and hence have been suggested to be CDK inhibitors. In this study, I have investigated the exact role of SIM and SMRs and their evolutionarily conserved function throughout land plant evolution. Using split luciferase complementation (SLC), I have shown that both SIM and a distantly related a bryophyte “Physcomitrella patens” SMR (pSMR1) interacts with multiple types of Cyclin Dependent Kinases (CDKs). I have multiple lines of evidence that establish SIM and SMRs as …

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The Electronic Structure Of Environmentally Persistent Free Radicals Formed On Metal Oxide Surfaces, Chad Allen Thibodeaux Jan 2015

The Electronic Structure Of Environmentally Persistent Free Radicals Formed On Metal Oxide Surfaces, Chad Allen Thibodeaux

LSU Doctoral Dissertations

We have investigated the electronic structure of environmentally persistent free radicals (EPFRs) formed on two different metal oxides: Cu(II)O and ZnO. Cu(II)O is known to be one of the most active metal oxides to form EPFRs. ZnO, however, forms the longest-lived EPFRs. First, we examined the adsorption of phenol on different crystal faces of ZnO. Ultraviolet photoelectron spectroscopy (UPS) shows direct evidence of charge transfer away from the ZnO to the phenol. This differs from the hypothesized mechanism of EPFR formation that says that an electron is transferred to the metal oxide. UPS difference spectra also shows that the phenol …

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Mechanisms Controlling Stem Cell Differentiation, Tran Doan Ngoc Tran Jan 2015

Mechanisms Controlling Stem Cell Differentiation, Tran Doan Ngoc Tran

LSU Doctoral Dissertations

Mesenchymal stem cells are multipotent cells that can differentiate into many cell types. However, the molecular mechanism controlling this process remains unclear. We utilized rat dental follicle stem cells (rDFSCs) and human adipose derived stem cells (hASCs) to study the mechanisms controlling osteogenesis and adipogenesis. Elevations in the intracellular Ca2+ concentration are a phenomenon commonly observed during stem cell differentiation but cease after the process is complete. The Transient Receptor Potential Melastatin 4 (TRPM4) is an ion channel that controls Ca2+ signals in excitable and non-excitable cells. However, there are no studies on TRPM4 in stem cells. In another study, …

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Bacterial Xanthine Dehydrogenase Regulators, Smitha Sivapragasam Jan 2015

Bacterial Xanthine Dehydrogenase Regulators, Smitha Sivapragasam

LSU Doctoral Dissertations

Bacteria are resilient organisms that tend to evolve rapidly in order to acquire abilities to survive in a constantly changing environment. Transcriptional regulators play a vital role in regulating the function of various essential proteins of the cell. The gene encoding Xanthine Dehydrogenase Regulator (XdhR), a transcriptional regulator, is divergently oriented to the gene cluster (xdhABC) encoding Xanthine Dehydrogenase (Xdh) protein in Streptomyces coelicolor, Agrobacterium tumefaciens and Ralstonia solanacearum. Xdh participates in purine salvage pathway in converting adenine to guanine. My research here is aimed at identifying the novel function of Xdh and XdhR in the above mentioned bacteria. XdhR …

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Nucleolar Proteins Are Essential For Ribosome Biogenesis And Nuclear Homeostasis In Drosophila Melanogaster, Yubo Wang Jan 2015

Nucleolar Proteins Are Essential For Ribosome Biogenesis And Nuclear Homeostasis In Drosophila Melanogaster, Yubo Wang

LSU Doctoral Dissertations

Four nucleostemin-like proteins (NS1-4) were identified previously in Drosophila melanogaster. NS1 and NS2 are nucleolar proteins, while NS3 and NS4 are cytoplasmic. Here we show that NS2 is homologous to the human nucleostemin-like protein, Ngp1, and that endogenous NS2 and exogenous GFP-NS2 enriches within peripheral regions of nucleoli in larval polyploid midgut cells. Like NS1, depletion of NS2 in midgut cells blocked the release of the 60S ribosomal subunit as detected by the accumulation GFP-RpL11 within nucleoli, and this likely led to a general loss of 60S subunit proteins as shown by immunoblot analyses. At the ultrastructural level, nucleoli in …

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Method Development For The Assignment Of Nmr Peaks And The Determination Of Quaternary Protein Structure Using Reductive Methylation, Pamlea Nicole Brady Jan 2015

Method Development For The Assignment Of Nmr Peaks And The Determination Of Quaternary Protein Structure Using Reductive Methylation, Pamlea Nicole Brady

LSU Doctoral Dissertations

The work described herein is centered on reductive methylation, a chemical modification reaction, which allows for the introduction of methyl groups at the primary amines of the lysine side chain and at the N-terminus. The resulting methyl groups are effective probes for the study of protein structure and dynamics using nuclear magnetic resonance spectroscopy (NMR). Described herein is work conducted on the development of tools for the study of protein structure using reductive methylation, highlighting options for addressing limitations of the labeling method encountered by its practical use. Chapter 1 serves as a brief introduction to protein structure and the …

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Caregiver Perceptions Of Speech-Language Pathologist (Slp) Communication: Examining How Slps Talk With Caregivers About Child Language Disorders, Karmen L. Porter Jan 2015

Caregiver Perceptions Of Speech-Language Pathologist (Slp) Communication: Examining How Slps Talk With Caregivers About Child Language Disorders, Karmen L. Porter

LSU Doctoral Dissertations

The purpose of this study was to identify how SLP communication regarding language disorders was perceived by caregivers. Employing a qualitative methodology, the caregivers of 10 children, identified with a language-based reading impairment, participated in semi-structured interviews concerning their experiences communicating with SLPs. As a whole, the findings showed the value caregivers place on receiving clear, concrete, and timely diagnostic information, the variability and complexity associated with caregivers’ understanding of language disorders, and the reciprocal relationship between key SLP communication practices, caregiver knowledge, and effective collaboration. Some of the key themes emphasized in regard to SLP communication practices included: recognition …

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Time-Resolved Investigations Of Continuous Flow Synthesis Of Nanomaterials And Catalysis Using Millifluidic Reactors For Biomass Conversion Reactors, Chelliah V Navin Jan 2015

Time-Resolved Investigations Of Continuous Flow Synthesis Of Nanomaterials And Catalysis Using Millifluidic Reactors For Biomass Conversion Reactors, Chelliah V Navin

LSU Doctoral Dissertations

Millifluidics can be used as a simple tool and convenient platform to perform in-situ investigations on nanoparticles synthesis to generate real-time information in a continuous flow fashion. These investigations can be used to observe the relationship between the structure and performance of nanoparticles for catalytic applications as a function of space and time. These improvements in nanoparticles research offer unique advantages to develop catalysts with molecular strategies. In order to showcase these advantages of the millifluidic reactors, here we: A. Extensively covered a complete literature review on Lab-on-a-chip devices for gold nanoparticle synthesis and as a catalyst support for continuous …

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Calibration And Categorization Of Plant Available Silicon In Louisiana Soils, Tapasya Babu Jan 2015

Calibration And Categorization Of Plant Available Silicon In Louisiana Soils, Tapasya Babu

LSU Doctoral Dissertations

A survey was conducted to document the silicon (Si) content of soils from 27 (selected) agrarian parishes of Louisiana using different extraction procedures. For 0.01 M calcium chloride (CaCl©ü) extraction procedure, all surveyed soils (n=212) fell below 56 mg Si kg⁻©ö. For five of the procedures, about 50% of surveyed soils in Louisiana had Si level below the critical Si level that thus far established in other regions. Calcium silicate slag and wollastonite were compared through chemical extractions after laboratory incubation with six different soil types, and then an assessment of quantity of monosilicic acid (H©þSiO©þ) sorbed and the quantity …

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Impact Of Exposure To Weathered Crude Oil And Accumulation Of Pahs In Crawfish (Procambarus Clarkii), Brittany Lynn Chichester Jan 2015

Impact Of Exposure To Weathered Crude Oil And Accumulation Of Pahs In Crawfish (Procambarus Clarkii), Brittany Lynn Chichester

LSU Master's Theses

The number of pipelines transporting crude oil and other refined petroleum products across the U.S. has increased 15.4% from 2004 to 2013. In Louisiana, over 3,450 miles of liquid petroleum pipelines crisscross the state. In January 2013, crude oil was accidentally released from an underground pipeline into Bayou Sorrel, Louisiana. This freshwater wetland is located within the Atchafalaya River Basin which is home to large populations of wild crawfish that could be impacted by the crude oil released. This study aims to assess the potential lethal impacts that crude oil spill may have produced in adult crawfish (P. clarkii) and …

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Fermentable Non-Digestible Dietary Fiber And Bioactive Compounds Affect Aging And Fat Deposition In Caenorhabditis Elegans, Chenfei Gao Jan 2015

Fermentable Non-Digestible Dietary Fiber And Bioactive Compounds Affect Aging And Fat Deposition In Caenorhabditis Elegans, Chenfei Gao

LSU Doctoral Dissertations

Overweight and obesity have been imposing $147 billion a year to the health care system in the United States. Limited medications are available in the market with side effects. Surgical treatments are second-line obesity treatments. Short chain fatty acids (SCFAs) produced from the fermentable resistant starch improves the secretion of satiety hormones peptide YY (PYY) and glucagon-like peptide 1 (GLP-1) from L-endocrine cells of cecum and colon. We hypothesized that consumption of fermentable non-digestible dietary fiber and bioactive compounds will increase insulin sensitivity, reduce body fat, and improve healthspan in Caenorhabditis elegans (C. elegans), and hyperglycemia (2% glucose) that may …

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An Ontological (Re)Thinking: Ubuntu And Buddhism In Higher Education, David Wayne Robinson-Morris Jan 2015

An Ontological (Re)Thinking: Ubuntu And Buddhism In Higher Education, David Wayne Robinson-Morris

LSU Doctoral Dissertations

Institutions of higher education, the nation’s ideological filters, shape our world and our very being-in-the-world. Given the current anthro-cultural state of affairs around the globe, this investigation posits institutions of higher education’s complicity in the proliferation of societal dis-ease and its responsibility in assisting to recalibrate the global moral compass. Following these assertions this inquiry is focused on the other-than-ness of higher education, and re-imagines both humanity and higher education to be what it is not yet, but must become. More specifically, through Buddhism and Ubuntu, this investigation (re)thinks institutions of higher education as transformational educative environments of human becoming …

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Peer Coaching Effects On Targeted Teaching Behaviors And Teacher Self-Efficacy In An Early Field Experience, Deanna Kay Rice Jan 2015

Peer Coaching Effects On Targeted Teaching Behaviors And Teacher Self-Efficacy In An Early Field Experience, Deanna Kay Rice

LSU Doctoral Dissertations

Abstract This study examined the effect of peer coaching on the development of effective teaching behaviors and teacher self-efficacy of education students in an early field experience. The convenience sample (N = 99) included undergraduate students enrolled in a required foundational course in special education at a large public university in the southern United States. Training methods included online video instruction on targeted effective and ineffective teaching behaviors. The effective behaviors included (a) established student learning objective prior to beginning a lesson, (b) explained and/or modeled how pupil can discover answer or solve a problem, (c) checked for understanding by …

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"Superbly Sterile:" Queer Reproduction In Victorian Literature And Culture, Mary Timothy Wilson Jan 2015

"Superbly Sterile:" Queer Reproduction In Victorian Literature And Culture, Mary Timothy Wilson

LSU Doctoral Dissertations

Examining a broad range of texts,“‘Superbly Sterile:’ Queer Reproduction in Victorian Literature and Culture,” argues that Thomas Hardy’s final naturalist novels, popular nineteenth-century vampire narratives, and the fiction of Oscar Wilde queered the bildungsroman (or novel of development) through characters who failed or refused to progress along sexual and maturational timelines. Where these texts’ critics have tended to read them as cautionary tales about homosexuality or predatory female sexuality, this dissertation contends that they also presented alternate forms of kinship and reproduction. They do so through the use of recursive, inverted, or otherwise backward relationships to time. Where Victorian sexology …

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Impact And Management Of The Mexican Rice Borer (Lepidoptera: Crambidae) In Bioenergy Crop Agroecosystems, Matthew Travis Vanweelden Jan 2015

Impact And Management Of The Mexican Rice Borer (Lepidoptera: Crambidae) In Bioenergy Crop Agroecosystems, Matthew Travis Vanweelden

LSU Doctoral Dissertations

The Mexican rice borer, Eoreuma loftini (Dyar) (Lepidoptera: Crambidae) is an invasive stem borer pest of sugarcane, rice, corn, and sorghum, and poses a threat to the production of dedicated bioenergy feedstocks in the U. S. Gulf Coast region. Studies were conducted to assess insect-plant interactions between E. loftini and bioenergy and conventional cultivars of sugarcane and sorghum, including yield response, oviposition preference, and host suitability. In addition, the efficacy of select cultural and biological control tactics to manage E. loftini in these crops was assessed. Bioenergy sugarcane (energycane) and sweet sorghum exhibited reduced E. loftini injury; however, these crops …

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Effect Of The Herbicide Atrazine On Phytoplankton, Water Quality, And Ecosystem Functions In Louisiana Estuaries, Alexis Victoria Starr Jan 2015

Effect Of The Herbicide Atrazine On Phytoplankton, Water Quality, And Ecosystem Functions In Louisiana Estuaries, Alexis Victoria Starr

LSU Master's Theses

Pesticides are used primarily for agricultural purposes in the US and while these chemicals provide many benefits, the inherent toxicity of the compounds pose a substantial risk to the environment. These chemicals may enter water bodies in areas with a high proportion of agricultural land use through surface run off, ground water discharge, and erosion, and negatively impact non-target aquatic organisms. As a result, Louisiana’s estuaries may be vulnerable to a variety of compounds, including the herbicide atrazine. Atrazine is used extensively throughout the Midwest and has been known to enter the Mississippi River through surface runoff and ground water …

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Examining The Effectiveness Of A Minority Bridge Program On The Academic Success Of African American Undergraduates At Predominantly White Institutions: A Mixed Methods Approach, Brandi Roberts Jan 2015

Examining The Effectiveness Of A Minority Bridge Program On The Academic Success Of African American Undergraduates At Predominantly White Institutions: A Mixed Methods Approach, Brandi Roberts

LSU Doctoral Dissertations

ABSTRACT The purpose of this study was to examine the effectiveness of a minority bridge program’s (MBP) impact on the academic success of African American undergraduates at a predominantly White institution (PWI). Minority bridge programs (MBP) are transition programs designed to academically and socially prepare students transition points in their educational careers. The goal of the MBP examined in this study was to acclimate minority students to college during the summer between high school and college. Although a few studies have been conducted on the effectiveness of MBPs, those studies are largely descriptive and lack empirical evidence. Drawing from the …

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Three Year Assessment Of Nearshore Crude Oil Contamination In The Gulf Of Mexico Using Gulf Menhaden (Brevoortia Patronus) As An Indicator Species: Menhaden Watch, Gregory Michael Olson Jan 2015

Three Year Assessment Of Nearshore Crude Oil Contamination In The Gulf Of Mexico Using Gulf Menhaden (Brevoortia Patronus) As An Indicator Species: Menhaden Watch, Gregory Michael Olson

LSU Doctoral Dissertations

Approximately 4.9 million barrels of crude oil along with natural gas were released into the Gulf of Mexico (GoM) from April to July 2010 (Deepwater Horizon, DWH, spill). Impacts of this magnitude seldom occur in the GoM (Ixtoc I was the last spill close to this magnitude occurring in 1979), and one cannot predict when they will happen. Major constituents of concern found in crude oil are Polycyclic Aromatic Hydrocarbons (PAHs), which often have low volatility that allows for prolonged existence in the environment. PAHs are compounds of concern according to the United States Environmental Protection Agency (USEPA), with one …

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Examining Male Infertility; The Association Between Age, Environment, And Reproductive Success In Male Patients That Have Participated In Assisted Reproductive Technology, Jeanne Lee Glaser Jan 2015

Examining Male Infertility; The Association Between Age, Environment, And Reproductive Success In Male Patients That Have Participated In Assisted Reproductive Technology, Jeanne Lee Glaser

LSU Doctoral Dissertations

As the number and age of human couples turning to assisted reproductive technology (ART) continues to increase, it is essential for clinicians to understand infertility threats related to both female and male patients. The objective of this study was to evaluate the association between age, environment, and reproductive success in male patients having participated in assisted reproductive technology. In corresponding experiments, male infertility variables such as; age, lifestyle exposures, body mass index (BMI), and infertility length with current partner (ILCP) were investigated. A retrospective collection of clinical male patient data from 2011 to 2014 was evaluated. Thirty-five variables were collected …

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A Comprehensive Optimization Framework For Designing Sustainable Renewable Energy Production Systems, Aryan Geraili Nejadfomeshi Jan 2015

A Comprehensive Optimization Framework For Designing Sustainable Renewable Energy Production Systems, Aryan Geraili Nejadfomeshi

LSU Doctoral Dissertations

As the world has recognized the importance of diversifying its energy resource portfolio away from fossil resources and more towards renewable resources such as biomass, there arises a need for developing strategies which can design renewable sustainable value chains that can be scaled up efficiently and provide tangible net environmental benefits from energy utilization. The objective of this research is to develop and implement a novel decision-making framework for the optimal design of renewable energy systems. The proposed optimization framework is based on a distributed, systematic approach which is composed of different layers including systems-based strategic optimization, detailed mechanistic modeling …

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Genetic And Transcriptomic Analyses Of The Rice Pathogenic Bacterium, Burkholderia Glumae, Reveal The Important Roles Of The Regulatory Gene, Tepr, For Bacterial Survival In Environmental Stresses, Jingyu Peng Jan 2015

Genetic And Transcriptomic Analyses Of The Rice Pathogenic Bacterium, Burkholderia Glumae, Reveal The Important Roles Of The Regulatory Gene, Tepr, For Bacterial Survival In Environmental Stresses, Jingyu Peng

LSU Master's Theses

Burkholderia glumae causes bacterial panicle blight in rice by producing the phytotoxin, toxoflavin, as a major virulence factor. Production of toxoflavin is negatively regulated by tepR, which encodes a sigma 54-dependent response regulator. In order to gain insights into the comprehensive biological functions of tepR, the genome-wide transcriptional profile dependent on tepR was analyzed through comparative transcriptome analysis between a tepR defective mutant and the wild-type strain, resulting in the identification of 238 differentially expressed genes (DEGs). Gene Ontology (GO) enrichment analysis indicated that genes involved in flagella assembly and stress response were highly enriched in tepR defective strain. Kyoto …

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