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Contemporary Organic Transformations Enabled By Novel Cationic Processes, Caitlan Elizabeth Ayala Jan 2016

Contemporary Organic Transformations Enabled By Novel Cationic Processes, Caitlan Elizabeth Ayala

LSU Doctoral Dissertations

This dissertation focuses on the development of synthetic methodologies in organic synthesis in two different areas. Chapter 1 discusses the more recent examples of transforming alcohols to their corresponding alkyl chlorides. The first area of our group’s research interest is the development of a mild chlorination method from unactivated alcohols, detailed in Chapter 2. Chapter 3 provides an insight into the history of oxyallyl cations, the basis of the second methodology development project in our laboratory. This chapter focuses on the traditional reactions that utilize these reactive intermediates, and it also showcases the concept of direct nucleophilic addition and the …

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Masculinity And Social Change: Exploring Generative Masculinity Development In Resident Assistant Men Through The Social Change Model Of Leadership Development, Joshua David Finch Jan 2016

Masculinity And Social Change: Exploring Generative Masculinity Development In Resident Assistant Men Through The Social Change Model Of Leadership Development, Joshua David Finch

LSU Master's Theses

In this study, men’s identity development among Resident Assistants (RAs) at Louisiana State University is investigated using a constructivist approach. Societal expectations of men tend to value hegemonic masculinity, which reinforces a drive for dominance, objectification, and high-risk behaviors (Edwards & Jones, 2009). Whereas, generative masculinity is characterized by a sense of responsibility, desire to give back, comfort with self, willingness to confront and break gender stereotypes, and the use of personal strengths to foster wellbeing (Badaszewski, 2014). Many characteristics of generative masculinity align with the Seven C’s of Social Change as described in the Social Change Model of Leadership …

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The Characterization Of Alpha- And Beta-Carbonic Anhydrases Of Arabidopsis Thaliana, Robert John Dimario Jan 2016

The Characterization Of Alpha- And Beta-Carbonic Anhydrases Of Arabidopsis Thaliana, Robert John Dimario

LSU Doctoral Dissertations

Carbonic anhydrases (CAs) are zinc-metalloenzymes that interconvert two inorganic carbon (Ci) species, CO2 and HCO3-. In Arabidopsis thaliana, there are eight Alpha-CA genes, six Beta-CA genes, three Gamma-CA genes, and two Gamma-CA-like genes. The majority of CA research in plants has focused on finding a link between CA activity and photosynthesis rates. Since the CA genes are expressed in different plant tissues and multiple CA isoforms are distributed among various organelles of the plant cell, I hypothesize that CAs facilitate CO2 diffusion among cell compartments and maintain Ci pools for carbon-requiring reactions by interconverting CO2 and HCO3-. This thesis focuses …

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Evaluation Of Absorption And Uptake Of Soil- And Foliar-Applied Silicon In Rice And Its Accumulation Under Different Phosphorus Rates, Flávia Bastos Agostinho Jan 2016

Evaluation Of Absorption And Uptake Of Soil- And Foliar-Applied Silicon In Rice And Its Accumulation Under Different Phosphorus Rates, Flávia Bastos Agostinho

LSU Master's Theses

Silicon (Si) fertilization has gained attention in rice (Oryza sativa) production. However, the common soil-applied sources are amended at high rates, whereas the efficacy of foliar Si application is yet to be proven. A series of pot experiments were conducted to (1) elucidate the effects of different Si sources on grain yield and Si accumulation of rice supplied with varying P rates, and 2) evaluate Si absorption and uptake by rice via foliar- and soil-application of Si fertilizers. First, three phosphorus (P) rates (0, 112, and 224 kg P ha-1) and three Si sources: two soil-applied (wollastonite and silicate slag) …

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The Influence Of Enrollment In Career And Technical Education Courses On The Achievement Of High School Special Education Students, Melinda Simoneaux Partin Jan 2016

The Influence Of Enrollment In Career And Technical Education Courses On The Achievement Of High School Special Education Students, Melinda Simoneaux Partin

LSU Doctoral Dissertations

This dissertation joins a conversation in the special education arena about the academic and vocational agenda for special education high school students. It explores the influence of enrollment in Career Technical Education (CTE) courses on the achievement of high school special education (SPED) students. The purpose of this study was to compare the achievement of special education (SPED) students enrolled in Career Technical Education (CTE) courses with special education (SPED) students who were not enrolled in Career Technical Education (CTE) courses. The study was designed to determine whether or not SPED students enrolled in CTE improved on the academic scores …

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Immune Gene Variation And Susceptibility To Upper Respiratory Tract Disease In Gopher Tortoises, Jean Pierre Elbers Jan 2016

Immune Gene Variation And Susceptibility To Upper Respiratory Tract Disease In Gopher Tortoises, Jean Pierre Elbers

LSU Doctoral Dissertations

The immune system defends the host from bacteria, fungi, parasites, and viruses. The immune system is partially under genetic control through immune response genes, such as those of the major histocompatibility complex (MHC) whose nucleotide variation influences the host’s ability to recognize foreign pathogens and can influence disease susceptibility. Populations of threatened species generally possess low levels of genetic variation, and genetically depauperate hosts may be at greater risk of infectious disease contributing to extirpations because they also possess low immunogenetic variation. My dissertation examines the relationship between immunogenetic variation and disease susceptibility and the factors that influence innate immune …

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Chemical Communication: The Effects Of Stress-Induced Apocrine Sweat On Human Perceptions And Interactions, Laura Caitlyn Hatcher Jan 2016

Chemical Communication: The Effects Of Stress-Induced Apocrine Sweat On Human Perceptions And Interactions, Laura Caitlyn Hatcher

LSU Doctoral Dissertations

In times of stress, humans secrete a type of sweat (apocrine sweat) that they do not secrete at any other time. This sweat has been previously shown to influence others who are exposed to it. The current project seeks to explore how apocrine sweat influences the people who are exposed to it. Using the framework of Emotional Contagion Theory, two studies were conducted to assess the effects of stress-induced apocrine sweat on human perceptions and interactions. Study 1 saw participants exposed to either thermoregulatory sweat or apocrine sweat before watching a short, fear-inducing video. Participants then reported their levels of …

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Systematics Of Targeted Flat Sedges (Cyperus, Cyperaceae) Of The Americas, Including A Floristic Analysis Of An Imperiled Sedge-Rich Prairie Community, Christopher Simon Reid Jan 2016

Systematics Of Targeted Flat Sedges (Cyperus, Cyperaceae) Of The Americas, Including A Floristic Analysis Of An Imperiled Sedge-Rich Prairie Community, Christopher Simon Reid

LSU Doctoral Dissertations

The sedge family, Cyperaceae, is a large group with approximately 5,000 species distributed among ca. 100 genera. Sedges are economically and ethnobotanically important. They are conspicuous members of many floras around the world and provide vital food and cover for wildlife. The focus of this dissertation is on the genus Cyperus, which includes about 900 species. Due to its large size, advancements in knowledge of Cyperus are made in small “bites”. The molecular phylogenetics component of this research focused on New World Cyperus. Chapter 2 presents a phylogentic analysis employing sequences from the nuclear ITS region. Chapter 3 presents a …

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Private Market Alternatives For Maintaining Wetland Viability In Coastal Louisiana: A Double-Hurdle Approach, Hua Wang Jan 2016

Private Market Alternatives For Maintaining Wetland Viability In Coastal Louisiana: A Double-Hurdle Approach, Hua Wang

LSU Doctoral Dissertations

The coastal zone of Louisiana contains more than three million wetland acres, or about 40 percent of the nation’s total. Since 1930, Louisiana has experienced a net loss of over 1,900 square miles of coastal wetlands. Currently at risk are the remaining coastal wetlands, 80 percent of which are under private ownership. The acceptance of private wetland owners to restoration programs and their participation in these programs are critical if future coastal restoration efforts are to be successful. Gaining the cooperation by the coastal landowners, however, is complicated by the fact that while the public benefits accruing from wetland protection …

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Molecular Simulation Studies Of Hydrophobins Near Gas, Oil And Water Interfaces, Yuwu Chen Jan 2016

Molecular Simulation Studies Of Hydrophobins Near Gas, Oil And Water Interfaces, Yuwu Chen

LSU Doctoral Dissertations

This dissertation contains fundamental, classical molecular simulation studies of the properties of hydrophobins (a unique family of surface-active proteins produced by filamentous fungi in soil) near interfaces involving gas, oil, water, organic solvents and polymers. These studies are relevant to possibly using hydrophobins as natural oil dispersants and in processing of polymers. Preliminary studies by the Russo group suggest that these small surface-active proteins can encapsulate oil, gases and polymers in cylindrical structures. We have performed classic molecular dynamics (MD) simulation and potential of mean force (PMF) calculations of a class I hydrophobin EAS using both all-atom and coarse-grained representations. …

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Parenting The Gifted And Talented Child: A Qualitative Inquiry Of The Perceptions Of Mothers Regarding Their Unique Experiences In Raising Gifted And Talented Children, Mary F. Hidalgo Jan 2016

Parenting The Gifted And Talented Child: A Qualitative Inquiry Of The Perceptions Of Mothers Regarding Their Unique Experiences In Raising Gifted And Talented Children, Mary F. Hidalgo

LSU Doctoral Dissertations

The lived experiences of mothers raising gifted and talented (G/T) children can differ from the lived experiences of mothers raising non-G/T children, and these unique experiences may spark concern, impact choices, and exacerbate stress and anxiety. The purpose of this study was to gather data in order to illustrate the distinctly defining experiences and perceptions of mothers currently raising G/T children as well as to consider both the internal and external factors affecting and influencing perspectives and self-efficacy. Utilizing a qualitative, case study research design approach, the researcher conducted interviews with eight volunteer mothers willing to share their thoughts and …

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Exploration Of Bimetallic Nickel And Cobalt Complexes For Catalytic Oxidative Cleavage Of Alkenes And Hydroformylation, Ciera Vonn Duronslet Jan 2016

Exploration Of Bimetallic Nickel And Cobalt Complexes For Catalytic Oxidative Cleavage Of Alkenes And Hydroformylation, Ciera Vonn Duronslet

LSU Doctoral Dissertations

The “old” bimetallic nickel complexes, meso- and rac-Ni2Cl4(et,ph-P4) were investigated as possible “catalysts” for the oxidative cleavage of alkenes using an unsaturated fatty acid, oleic acid, as the substrate. The “new” bimetallic nickel complexes with a stronger chelating tetraphosphine ligand, meso- and rac-Ni2Cl4(et,ph-P4-Ph), were also synthesized and tested for the oxidative cleavage of oleic acid. All four dinickel complexes were found to be active for the oxidative cleavage of oleic acid, producing extremely small amounts of aldehyde product. The Stanley research group also discovered the oxidative cleavage of alkenes using only the “old” et,ph-P4 tetraphosphine ligands with no metal centers. …

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Synthesis And Characterization Of Cyclic Polypeptoids By Organo-Mediated Controlled Zwitterionic Ring-Opening Polymerization And Development Of Redox-Responsive Polypeptoid Micelles As Drug Delivery Carriers, Ang Li Jan 2016

Synthesis And Characterization Of Cyclic Polypeptoids By Organo-Mediated Controlled Zwitterionic Ring-Opening Polymerization And Development Of Redox-Responsive Polypeptoid Micelles As Drug Delivery Carriers, Ang Li

LSU Doctoral Dissertations

Peptoids are peptidomimetic polymers, which have attracted much attention over the past two decades. They have similar building blocks to peptides, and the similarity makes the backbone of peptoids hydrophilic and biocompatible.1 Two types of peptoid polymers are under development. One is sequence-defined peptoids, which exhibit excellent bioactivities.2 Another one is polypeptoids. The good biocompatibility and highly tunable side chain substituents allow polypeptoids to be used broadly in future biomedical applications. Varying polymer architectures, including linear polymers, cyclic polymers, comb-like polymers, and dendrimers can provide distinctive properties to the polymers. Cyclic polymers employ a cyclic architecture and lack chain ends, …

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African-American Single Mothers' Experiences While Furthering Their Education, Kimberly Rayshun James Jan 2016

African-American Single Mothers' Experiences While Furthering Their Education, Kimberly Rayshun James

LSU Doctoral Dissertations

The government as expressed the importance of a post-secondary education for career advancement, and they have displayed the income increase and rate of return between post-secondary degrees and a high school diploma. Due to the benefits of income and career advancement with a post-secondary education, more women are enrolling in colleges and universities, especially African-American single mothers; however, the graduation rate with this group is low. Little research concentrated on the experiences of African-American single mothers while obtaining their post-secondary education, and more research has focused on the connection between the women and stereotypes that followed the race since slavery. …

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Lag Time Between Parental First Concerns About Development And Entry Into Early Intervention: Impact Of Child/Family Factors, First Concerns, And Symptom Presentation, Jennifer S. Beighley Jan 2016

Lag Time Between Parental First Concerns About Development And Entry Into Early Intervention: Impact Of Child/Family Factors, First Concerns, And Symptom Presentation, Jennifer S. Beighley

LSU Doctoral Dissertations

Autism Spectrum Disorder (ASD) is a neurodevelopmental disorder that impacts an individual’s ability to relate to and communicate with others. Although children often do not receive a diagnosis until age 4-5 years (Centers for Disease Control and Prevention, 2014), parents typically recognize developmental problems by age 2 years (Chawarska et al., 2007), and often in the first year of life (Kishore & Basu, 2011). However, these early concerns do not always translate into appropriate or timely steps to access care. Few studies have examined factors relating to the time lag that exists between early concerns and action. Because early intervention …

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The Vulnerability Of Louisiana To Hurricane Damage And The Value Of Wetlands For Hurricane Risk Reduction, James Luke Boutwell Jan 2016

The Vulnerability Of Louisiana To Hurricane Damage And The Value Of Wetlands For Hurricane Risk Reduction, James Luke Boutwell

LSU Doctoral Dissertations

Coastal Louisiana is annually threatened by coastal storms. Population grown, wetland loss, and potentially increasing storm frequency are likely to increase coastal vulnerability to these events. Increasingly, coastal management entities are managing land resources to reduce the economic impact of natural disasters with the use of natural infrastructure. This is true in Louisiana where the Louisiana Coastal Master Plan allocates billions of dollars to coastal restoration projects, many of which are intended to mitigate economic damages from tropical storms and hurricanes. Despite this significant proposed investment, the risk reduction value provided by these projects is not well known. This analysis …

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Studies Of The Properties Of Designed Nanoparticles Using Atomic Force Microscopy, Steve Matthew Deese Jan 2016

Studies Of The Properties Of Designed Nanoparticles Using Atomic Force Microscopy, Steve Matthew Deese

LSU Doctoral Dissertations

The purpose of the research in this dissertation was to elucidate the intrinsic properties of how nanoparticles are different from bulk materials. This was done by mechanical and electronic studies of the properties of designed nanoparticles using advanced modes of atomic force microscopy. Information relating to the work functions, contact potential difference, Young’s Moduli, elasticity, and viscoelasticity can be investigated using state-of-the-art atomic force microscope (AFM) experiments. Subsurface imaging of polystyrene encapsulated cobalt nanoparticles was achieved for the first time using Force Modulation Microscopy (FMM) in conjunction with contact mode AFM. Previously prepared sample of polystyrene coated cobalt nanoparticles were …

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Fundamental Studies Of Humic Acid's Influence On Pollutant Toxicity To Aquatic Organisms, Rachel Dawn Deese Jan 2016

Fundamental Studies Of Humic Acid's Influence On Pollutant Toxicity To Aquatic Organisms, Rachel Dawn Deese

LSU Doctoral Dissertations

The main purpose of the research presented in this dissertation was to further understand the intricate and convoluted interactions between natural organic material, biological entities, and pollutants. This was achieved by utilizing humic acids (HAs) from differing sources, chemically modified humic acid, two biological entities (model biomembranes and Artemia Franciscana), and three types of pollutants (cations, surfactants, and carbon nanotubes). Fluorescence spectroscopy and model biomembranes were used to measure the change in HA’s ability to interact with the biomembranes in the presence of cations. Three differently sourced HAs, chemical modified HAs, and a range of cations were studied to elucidate …

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Silent Suffering: A Phenomenological Study Of African American Women Facing Infertility & Lessons Learned For Work-Life Balance, Kimberley Faye Williams Jan 2016

Silent Suffering: A Phenomenological Study Of African American Women Facing Infertility & Lessons Learned For Work-Life Balance, Kimberley Faye Williams

LSU Doctoral Dissertations

Although African American women represent the largest female demographic in the workforce (NABCP, 2014) and have the highest rates of infertility (Chandra, Copen & Stephen, 2013), their career and life experiences remain underrepresented in scholarship. Framed through the critical lens of Intersectionality, this phenomenological qualitative study explored the lived experiences of 11 African American women as they struggled with infertility and the competing demands of work and family life. The two major themes that emerged were: (1) silent suffering, and (2) lack of sensitivity and support in the workplace. The subthemes that supported silent suffering included: (1) emotional distress and …

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Synthesis And Characterization Of Polyhalogenated Boron Dipyrromethenes And Carboranylbisthiophene Oligomers, Ning Zhao Jan 2016

Synthesis And Characterization Of Polyhalogenated Boron Dipyrromethenes And Carboranylbisthiophene Oligomers, Ning Zhao

LSU Doctoral Dissertations

Chapter 1 of this dissertation shows a brief overview of fundamental concepts and classic synthetic routes of BODIPY dyes. The synthetic strategies and various application (e.g. PDT sensitizers and fluorescent indicators) of halogenated BODIPYs are also presented in this chapter. Chapters 2-4 describe the synthesis of three new polyhalogenated BODIPY platforms and their regioselective functionalization. Such new platforms provide new methodologies for producing both symmetric and asymmetric BODIPYs. Pd(0)-catalyzed cross-couplings and aromatic substitution reactions were applied to investigate the reactivity and regioselectivity of different halogen groups on the BODIPY platforms. The studies showed that the reactivity order of the halogens …

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Metabolic Preconditioning Of Mammalian Cells: Approaches For Increasing Biostability After Desiccation, Apurva Shrihari Borcar Jan 2016

Metabolic Preconditioning Of Mammalian Cells: Approaches For Increasing Biostability After Desiccation, Apurva Shrihari Borcar

LSU Doctoral Dissertations

Selected species in nature are able to tolerate prolonged periods of severe water stress. Survival of cellular desiccation in these anhydrobiotic organisms is conferred by a number of mechanisms including accumulation of stabilizing solutes, such as trehalose, and expression of Late Embryogenesis Abundant (LEA) proteins. An additional feature shared by some anhydrobiotic animals is the capacity to suppress mitochondrial oxidative phosphorylation in preparation for desiccation. These mechanisms improve the physiological robustness of cells to stress. The primary aim of this dissertation is to evaluate forms of metabolic preconditioning and to test the most propitious as a means to improve desiccation …

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Black Girl Magic: How Black Women Administrators Navigate The Intersection Of Race And Gender In Workspace Silos At Predominantly White Institutions, Allison Michelle Smith Jan 2016

Black Girl Magic: How Black Women Administrators Navigate The Intersection Of Race And Gender In Workspace Silos At Predominantly White Institutions, Allison Michelle Smith

LSU Doctoral Dissertations

In choosing to look at the impact of white racially homogeneous work environments, if any, in relation to Black women higher education administrators, this research was grounded in Patricia Hill Collins’ Black Feminist Thought. Utilizing Black Feminist Thought, rooted in intersectionality, provided a sturdy foundation for one interested in conducting research specific to Black women, whether the discourse is race, gender, and/or any other intersecting identities. Black Feminist Thought conveys the message that Black women have similar yet different experiences from White women and similar yet different experiences from Black men, while simultaneously having shared yet different experiences than other …

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An Integrated Approach To Ambrosia Beetle Management In Ornamental Tree Nurseries: Biology Of And Control Measures For Exotic Xyleborina, Christopher Werle Jan 2016

An Integrated Approach To Ambrosia Beetle Management In Ornamental Tree Nurseries: Biology Of And Control Measures For Exotic Xyleborina, Christopher Werle

LSU Doctoral Dissertations

Ambrosia beetles have been a challenge to profitable nursery production for decades, with management recommendations focused on population monitoring and properly-timed insecticidal applications. Beetles disperse from forests starting in early spring, but few studies have determined the extent of this flight period, or how far they will fly into a nursery. And while the use of semiochemicals by ambrosia beetles has been widely examined, their use of visual cues including colors represents another gap in our knowledge. In addition to these under-studied behavioral traits, the available chemical control measures for ambrosia beetles are not completely effective, and repeated applications become …

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Coastal Flood Risk In A Changing Climate Along The Northern Gulf Of Mexico, Matthew Vernon Bilskie Jan 2016

Coastal Flood Risk In A Changing Climate Along The Northern Gulf Of Mexico, Matthew Vernon Bilskie

LSU Doctoral Dissertations

Coastal regions around the world are experiencing increased vulnerability from natural and manmade disasters. It is anticipated that coastal flood risk will increase due to the effects of climate change, and sea level rise (SLR) in particular. A dynamic, physics-based, framework to compute coastal flood inundation maps under various climate change scenarios was developed. The novel modeling system includes not only SLR, but considers future projections of shoreline evolution and primary dune morphology, upland migration of intertidal marsh, and land use land cover change. A present day hurricane storm surge model was generated for the Mississippi, Alabama, and Florida panhandle …

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Data-Driven Rational Drug Design, Yun Ding Jan 2016

Data-Driven Rational Drug Design, Yun Ding

LSU Doctoral Dissertations

Vast amount of experimental data in structural biology has been generated, collected and accumulated in the last few decades. This rich dataset is an invaluable mine of knowledge, from which deep insights can be obtained and practical applications can be developed. To achieve that goal, we must be able to manage such "Big Data'' in science and investigate them expertly. Molecular docking is a field that can prominently make use of the large structural biology dataset. As an important component of rational drug design, molecular docking is used to perform large-scale screening of putative associations between small organic molecules and …

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Analysis Of Insect Pest Reports At Lsu Residential Life, Namoona Acharya Jan 2016

Analysis Of Insect Pest Reports At Lsu Residential Life, Namoona Acharya

LSU Master's Theses

Urban insect pests are adversely affecting student living on campus at LSU. Insect pest reporting was started systematically in 2000 at LSU Residential Life after introducing Maximo database. To analyze the insect pest reports, complaints from students on ants, bed bugs and cockroaches were selected from the database. From the 16-year data set, the growth trend of reports of ants, bed bugs and cockroaches was found to be increasing. The highest reported month and year for ants was September 2004. In August 2008, cockroaches were most reported on. Bed bug reports peaked in October 2009. Based on the reports, the …

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Perceived Barriers To Autism Spectrum Disorder Services, Lindsey Willis Williams Jan 2016

Perceived Barriers To Autism Spectrum Disorder Services, Lindsey Willis Williams

LSU Doctoral Dissertations

Autism Spectrum Disorder (ASD) is a lifelong neurodevelopmental disorder with hallmark symptoms that can be severely impairing to both the individual and the overall family dynamic. The path to diagnostic and therapy services is often lengthy and complex. Despite various state and federal efforts to improve service access, disparities remain evident across ethnic, socioeconomic, and geographic lines with caregivers reporting financial, cultural, geographic, and practical (e.g., transportation, scheduling) barriers. For those able to access treatment, several interventions have been proven efficacious in addressing ASD symptoms, problem behaviors, and adaptive skills deficits. Other often-used interventions include those without established merit for …

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The Effect Of True Colors Workshop Participation On Time-To-Degree, Rachel K. Davis Jan 2016

The Effect Of True Colors Workshop Participation On Time-To-Degree, Rachel K. Davis

LSU Master's Theses

This study explores the relationship between major changes and time-to-degree at a large, public university in the Southeastern United States. In addition, it analyzes the effects of participation in True Colors workshops (a major decision-making intervention) on major changes and time-to-degree while controlling for competing explanations (i.e., demographic factors, GPA, major). While researchers have often suggested a link between major changes and enrollment beyond four years, they have not often studied this relationship. Moreover, researchers have not studied the effectiveness of True Colors major decision-making workshops on major changes and/or time-to-degree. Existing research establishes the negative effects of extended enrollment …

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The Influence Of Selected Academic And Demographic Characteristics On The Success Of First-Year Students Enrolled In A Baccalaureate Nursing Program, Scelitta F. Bond Jan 2016

The Influence Of Selected Academic And Demographic Characteristics On The Success Of First-Year Students Enrolled In A Baccalaureate Nursing Program, Scelitta F. Bond

LSU Doctoral Dissertations

The primary purpose of the study was to determine the influence of selected demographic and academic characteristics on success in nursing education among first year baccalaureate nursing students enrolled in a private college in the Southern region of the United States. The participants in the study were 102 baccalaureate students admitted to the nursing program in Fall, 2013. For the purpose of the study, success was defined as a grade of C or higher in two clinical nursing courses in the first year of the nursing program. Academic and demographic criteria were examined and compared using means, standard deviations, Independent …

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Development Of Functional Markers For Resistance To Leaf Scald In Sugarcane, Andres Felipe Gutierrez Viveros Jan 2016

Development Of Functional Markers For Resistance To Leaf Scald In Sugarcane, Andres Felipe Gutierrez Viveros

LSU Doctoral Dissertations

Leaf scald, caused by Xanthomonas albilineans, is a major sugarcane disease worldwide. The disease is managed primarily with resistant cultivars obtained through classical breeding; however, the erratic symptom expression hinders the reliability and reproducibility of the selection process. The development of molecular markers associated with incompatible/compatible reaction can overcome this limitation. Suppression subtractive hybridization (SSH) and quantitative trait locus (QTL) mapping were the strategies used to find leaf scald resistance-associated genes and molecular markers in sugarcane. SSH results showed that genes involved in signal perception and transduction, and DNA binding, were highly expressed in the resistant clone LCP 85-384 compared …

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