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Articles 1771 - 1800 of 4162
Full-Text Articles in Entire DC Network
Increased Phosphate Transport Of Arabidopsis Thalianapht1;1 By Site-Directed Mutagenesis Of Tyrosine 312 May Be Attributed To The Disruption Of Homomeric Interactions, Elena B. Fontenot, Sandra Feuer Ditusa, Naohiro Kato, Danielle M. Olivier, Renee Dale, Wei Yi Lin, Tzyy Jen Chiou, Megan A. Macnaughtan, Aaron P. Smith
Increased Phosphate Transport Of Arabidopsis Thalianapht1;1 By Site-Directed Mutagenesis Of Tyrosine 312 May Be Attributed To The Disruption Of Homomeric Interactions, Elena B. Fontenot, Sandra Feuer Ditusa, Naohiro Kato, Danielle M. Olivier, Renee Dale, Wei Yi Lin, Tzyy Jen Chiou, Megan A. Macnaughtan, Aaron P. Smith
Faculty Publications
& Sons Ltd. Members of the Pht1 family of plant phosphate (Pi) transporters play vital roles in Pi acquisition from soil and in plantaPi translocation to maintain optimal growth and development. The study of the specificities and biochemical properties of Pht1 transporters will contribute to improving the current understanding of plant phosphorus homeostasis and use-efficiency. In this study, we show through split in vivo interaction methods and in vitro analysis of microsomal root tissues that Arabidopsis thalianaPht1;1 and Pht1;4 form homomeric and heteromeric complexes. Transient and heterologous expression of the Pht1;1 variants, Pht1;1Y312D, Pht1;1Y312A and Pht1;1Y312F …
Il-1Β Reciprocally Regulates Chemokine And Insulin Secretion In Pancreatic Β-Cells Via Nf-Κb, Susan J. Burke, Krisztian Stadler, Danhong Lu, Evanna Gleason, Anna Han, Dallas R. Donohoe, Richard C. Rogers, Gerlinda E. Hermann, Michael D. Karlstad, J. Jason Collier
Il-1Β Reciprocally Regulates Chemokine And Insulin Secretion In Pancreatic Β-Cells Via Nf-Κb, Susan J. Burke, Krisztian Stadler, Danhong Lu, Evanna Gleason, Anna Han, Dallas R. Donohoe, Richard C. Rogers, Gerlinda E. Hermann, Michael D. Karlstad, J. Jason Collier
Faculty Publications
© 2015 the American Physiological Society. Proinflammatory cytokines impact islet β-cell mass and function by altering the transcriptional activity within pancreatic β-cells, producing increases in intracellular nitric oxide abundance and the synthesis and secretion of immunomodulatory proteins such as chemokines. Herein, we report that IL-1β, a major mediator of inflammatory responses associated with diabetes development, coordinately and reciprocally regulates chemokine and insulin secretion. We discovered that NF-κB controls the increase in chemokine transcription and secretion as well as the decrease in both insulin secretion and proliferation in response to IL-1β. Nitric oxide production, which is markedly elevated in pancreatic β-cells …
Increased Phosphate Transport Of Arabidopsis Thalianapht1;1 By Site-Directed Mutagenesis Of Tyrosine 312 May Be Attributed To The Disruption Of Homomeric Interactions, Elena B. Fontenot, Sandra Feuer Ditusa, Naohiro Kato, Danielle M. Olivier, Renee Dale, Wei Yi Lin, Tzyy Jen Chiou, Megan A. Macnaughtan, Aaron P. Smith
Increased Phosphate Transport Of Arabidopsis Thalianapht1;1 By Site-Directed Mutagenesis Of Tyrosine 312 May Be Attributed To The Disruption Of Homomeric Interactions, Elena B. Fontenot, Sandra Feuer Ditusa, Naohiro Kato, Danielle M. Olivier, Renee Dale, Wei Yi Lin, Tzyy Jen Chiou, Megan A. Macnaughtan, Aaron P. Smith
Faculty Publications
& Sons Ltd. Members of the Pht1 family of plant phosphate (Pi) transporters play vital roles in Pi acquisition from soil and in plantaPi translocation to maintain optimal growth and development. The study of the specificities and biochemical properties of Pht1 transporters will contribute to improving the current understanding of plant phosphorus homeostasis and use-efficiency. In this study, we show through split in vivo interaction methods and in vitro analysis of microsomal root tissues that Arabidopsis thalianaPht1;1 and Pht1;4 form homomeric and heteromeric complexes. Transient and heterologous expression of the Pht1;1 variants, Pht1;1Y312D, Pht1;1Y312A and Pht1;1Y312F …
Faculty Senate Newsletter, January 2015, Louisiana State University And Agricultural & Mechanical College
Faculty Senate Newsletter, January 2015, Louisiana State University And Agricultural & Mechanical College
LSU Faculty Senate Publications
Message from President: In one of his Proverbs of Hell, the late-Enlightenment poet William Blake shows the devil recommending that we “Bring out number weight and measure in a year of dearth.” Blake’s advice, uttered by the Provost of Perdition, throws a bituminous light on our contemporary preoccupation with assessment. Academic people everywhere not only labor under, but amicably collaborate in the production of statistics, measurements, evaluations, “metrics,” and a menagerie of purportedly informative numbers. We have arithmetical estimates of everything—except assessment itself. The absence of evidence for the efficacy of assessment is, if not overwhelming, at least imposing. Faculty …
Induced Jasmonate Signaling Leads To Contrasting Effects On Root Damage And Herbivore Performance, Jing Lu, Christelle Aurélie Maud Robert, Michael Riemann, Marco Cosme, Laurent Mène-Saffrané, Josep Massana, Michael Joseph Stout, Yonggen Lou, Jonathan Gershenzon, Matthias Erb
Induced Jasmonate Signaling Leads To Contrasting Effects On Root Damage And Herbivore Performance, Jing Lu, Christelle Aurélie Maud Robert, Michael Riemann, Marco Cosme, Laurent Mène-Saffrané, Josep Massana, Michael Joseph Stout, Yonggen Lou, Jonathan Gershenzon, Matthias Erb
Faculty Publications
© 2015 American Society of Plant Biologists. All rights reserved. Induced defenses play a key role in plant resistance against leaf feeders. However, very little is known about the signals that are involved in defending plants against root feeders and how they are influenced by abiotic factors. We investigated these aspects for the interaction between rice (Oryza sativa) and two root-feeding insects: the generalist cucumber beetle (Diabrotica balteata) and the more specialized rice water weevil (Lissorhoptrus oryzophilus). Rice plants responded to root attack by increasing the production of jasmonic acid (JA) and abscisic acid, whereas in contrast to in herbivore-attacked …
Factors Influencing Expression Of Antixenosis In Soybean To Anticarsia Gemmatalis And Spodoptera Frugiperda (Lepidoptera: Noctuidae), Arlindo Leal Boiça Júnior, Bruno Henrique Sardinha De Souza, Eduardo Neves Costa, Zulene Antonio Ribeiro, Michael Joseph Stout
Factors Influencing Expression Of Antixenosis In Soybean To Anticarsia Gemmatalis And Spodoptera Frugiperda (Lepidoptera: Noctuidae), Arlindo Leal Boiça Júnior, Bruno Henrique Sardinha De Souza, Eduardo Neves Costa, Zulene Antonio Ribeiro, Michael Joseph Stout
Faculty Publications
© The Authors 2015. Published by Oxford University Press on behalf of Entomological Society of America. This study aimed to evaluate some factors that influence the expression of antixenosis in soybean genotypes against Anticarsia gemmatalis Hübner and Spodoptera frugiperda (J. E. Smith) (Lepidoptera: Noctuidae). Free-choice and no-choice feeding assays were performed with the resistant soybean genotype IAC 100 and the susceptible genotype BRSGO 8360 using A. gemmatalis and S. frugiperda larvae. The following factors that may affect expression of resistance were evaluated: one larva versus two larvae per leaf disc; use of larvae without prior feeding suspension versus larvae starved …
Role Of Resistant Starch In Improving Gut Health, Adiposity, And Insulin Resistance, Michael J. Keenan, June Zhou, Maren Hegsted, Christine Pelkman, Holiday A. Durham, Diana B. Coulon, Roy J. Martin
Role Of Resistant Starch In Improving Gut Health, Adiposity, And Insulin Resistance, Michael J. Keenan, June Zhou, Maren Hegsted, Christine Pelkman, Holiday A. Durham, Diana B. Coulon, Roy J. Martin
Faculty Publications
© 2015 American Society for Nutrition. The realization that low-glycemic index diets were formulated using resistant starch led to more than a decade of research on the health effects of resistant starch. Determination of the metabolizable energy of the resistant starch product allowed for the performance of isocaloric studies. Fermentation of resistant starch in rodent studies results in what appears to be a healthier gut, demonstrated by increased amounts of short-chain fatty acids, an apparent positive change in the microbiota, and increased gene expression for gene products involved in normal healthy proliferation and apoptosis of potential cancer cells. Additionally, consumption …
Role Of Resistant Starch In Improving Gut Health, Adiposity, And Insulin Resistance, Michael J. Keenan, June Zhou, Maren Hegsted, Christine Pelkman, Holiday A. Durham, Diana B. Coulon, Roy J. Martin
Role Of Resistant Starch In Improving Gut Health, Adiposity, And Insulin Resistance, Michael J. Keenan, June Zhou, Maren Hegsted, Christine Pelkman, Holiday A. Durham, Diana B. Coulon, Roy J. Martin
Faculty Publications
© 2015 American Society for Nutrition. The realization that low-glycemic index diets were formulated using resistant starch led to more than a decade of research on the health effects of resistant starch. Determination of the metabolizable energy of the resistant starch product allowed for the performance of isocaloric studies. Fermentation of resistant starch in rodent studies results in what appears to be a healthier gut, demonstrated by increased amounts of short-chain fatty acids, an apparent positive change in the microbiota, and increased gene expression for gene products involved in normal healthy proliferation and apoptosis of potential cancer cells. Additionally, consumption …
Prowashonupana Barley Dietary Fibre Reduces Body Fat And Increases Insulin Sensitivity In Caenorhabditis Elegans Model, Chenfei Gao, Michael L. King, Zachary L. Fitzpatrick, Wenqian Wei, Jason F. King, Mingming Wang, Frank L. Greenway, John W. Finley, Jeffrey H. Burton, William D. Johnson, Michael J. Keenan, Frederick M. Enright, Roy J. Martin, Jolene Zheng
Prowashonupana Barley Dietary Fibre Reduces Body Fat And Increases Insulin Sensitivity In Caenorhabditis Elegans Model, Chenfei Gao, Michael L. King, Zachary L. Fitzpatrick, Wenqian Wei, Jason F. King, Mingming Wang, Frank L. Greenway, John W. Finley, Jeffrey H. Burton, William D. Johnson, Michael J. Keenan, Frederick M. Enright, Roy J. Martin, Jolene Zheng
Faculty Publications
© 2015 Elsevier Ltd. Prowashonupana barley (PWB) is high in β-glucan with moderate content of resistant starch. PWB reduced intestinal fat deposition (IFD) in wild type Caenorhabditis elegans (C. elegans, N2), and in sir-2.1 or daf-16 null mutants, and sustained a surrogate marker of lifespan, pharyngeal pumping rate (PPR), in N2, sir-2.1, daf-16, or daf-16/daf-2 mutants. Hyperglycaemia (2% glucose) reversed or reduced the PWB effect on IFD in N2 or daf-16/daf-2 mutants with a sustained PPR. mRNA expression of cpt-1, cpt-2, ckr-1, and gcy-8 were dose-dependently reduced in N2 or daf-16 mutants, elevated in daf-16/daf-2 mutants with reduction in cpt-1, …
Comparative Gut Microbiota Of 59 Neotropical Bird Species, Sarah M. Hird, César Sánchez, Bryan C. Carstens, Robb T. Brumfield
Comparative Gut Microbiota Of 59 Neotropical Bird Species, Sarah M. Hird, César Sánchez, Bryan C. Carstens, Robb T. Brumfield
Faculty Publications
© 2015 Hird, Sánchez, Carstens and Brumfield. The gut microbiota of vertebrates are essential to host health. Most non-model vertebrates, however, lack even a basic description of natural gut microbiota biodiversity. Here, we sampled 116 intestines from 59 Neotropical bird species and used the V6 region of the 16S rRNA molecule as a microbial fingerprint (average coverage per bird ~80,000 reads). A core microbiota of Proteobacteria, Firmicutes, Bacteroidetes, and Actinobacteria was identified, as well as several gut-associated genera. We tested 18 categorical variables associated with each bird for significant correlation to the gut microbiota; host taxonomic categories were most frequently …
Louisiana Agriculture Winter, 2015
Blueberries Improve Glucose Tolerance Without Altering Body Composition In Obese Postmenopausal Mice, Carrie M. Elks, Jennifer D. Terrebonne, Donald K. Ingram, Jacqueline M. Stephens
Blueberries Improve Glucose Tolerance Without Altering Body Composition In Obese Postmenopausal Mice, Carrie M. Elks, Jennifer D. Terrebonne, Donald K. Ingram, Jacqueline M. Stephens
Faculty Publications
© 2015 The Obesity Society. Objective Metabolic syndrome (MetS) risk increases significantly during menopause and remains elevated postmenopause. Several botanicals, including blueberries (BB), have been shown to delay MetS progression, but few studies have been conducted in postmenopausal animal models. Here, the effects of BB supplementation on obese postmenopausal mice using a chemically induced menopause model were examined. Methods After induction of menopause, mice were fed a high-fat diet or the same diet supplemented with 4% BB powder for 12 weeks. Body weight and body composition were measured, and mice were subjected to glucose and insulin tolerance tests. Serum triglycerides …
Isothiocyanate-Rich Moringa Oleifera Extract Reduces Weight Gain, Insulin Resistance, And Hepatic Gluconeogenesis In Mice, Patricio Rojas-Silva, Tugba Boyunegmez Tumer, Peter Kuhn, Allison J. Richard, Shawna Wicks, Jacqueline M. Stephens, Zhong Wang, Randy Mynatt, William Cefalu, Ilya Raskin
Isothiocyanate-Rich Moringa Oleifera Extract Reduces Weight Gain, Insulin Resistance, And Hepatic Gluconeogenesis In Mice, Patricio Rojas-Silva, Tugba Boyunegmez Tumer, Peter Kuhn, Allison J. Richard, Shawna Wicks, Jacqueline M. Stephens, Zhong Wang, Randy Mynatt, William Cefalu, Ilya Raskin
Faculty Publications
© 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. Scope: Moringa oleifera (moringa) is tropical plant traditionally used as an antidiabetic food. It produces structurally unique and chemically stable moringa isothiocyanates (MICs) that were evaluated for their therapeutic use in vivo. Methods and results: C57BL/6L mice fed very high fat diet (VHFD) supplemented with 5% moringa concentrate (MC, delivering 66 mg/kg/d of MICs) accumulated fat mass, had improved glucose tolerance and insulin signaling, and did not develop fatty liver disease compared to VHFD-fed mice. MC-fed group also had reduced plasma insulin, leptin, resistin, cholesterol, IL-1β, TNFα, and lower hepatic glucose-6-phosphatase …
Diosgenin, 4-Hydroxyisoleucine, And Fiber From Fenugreek: Mechanisms Of Actions And Potential Effects On Metabolic Syndrome, Scott Fuller, Jacqueline M. Stephens
Diosgenin, 4-Hydroxyisoleucine, And Fiber From Fenugreek: Mechanisms Of Actions And Potential Effects On Metabolic Syndrome, Scott Fuller, Jacqueline M. Stephens
Faculty Publications
© 2015 American Society for Nutrition. Metabolic syndrome and its complications continue to rise in prevalence and show no signs of abating in the immediate future. Therefore, the search for effective treatments is a high priority in biomedical research. Products derived from botanicals have a time-honored history of use in the treatment of metabolic diseases including type 2 diabetes. Trigonella foenum-graecum, commonly known as fenugreek, is an annual herbaceous plant that has been a staple of traditional herbal medicine in many cultures. Although fenugreek has been studied in both clinical and basic research settings, questions remain about its efficacy and …
Fat In Flames: Influence Of Cytokines And Pattern Recognition Receptors On Adipocyte Lipolysis, Ryan W. Grant, Jacqueline M. Stephens
Fat In Flames: Influence Of Cytokines And Pattern Recognition Receptors On Adipocyte Lipolysis, Ryan W. Grant, Jacqueline M. Stephens
Faculty Publications
© 2015 the American Physiological Society. Adipose tissue has the largest capacity to store energy in the body and provides energy through the release of free fatty acids during times of energy need. Different types of immune cells are recruited to adipose tissue under various physiological conditions, indicating that these cells contribute to the regulation of adipose tissue. One major pathway influenced by a number of immune cells is the release of free fatty acids through lipolysis during both physiological (e.g., cold stress) and pathophysiological processes (e.g., obesity, type 2 diabetes). Adipose tissue expansion during obesity leads to immune cell …
Seasonal Changes In Soil Organic Matter After A Decade Of Nutrient Addition In A Lowland Tropical Forest, Benjamin L. Turner, Joseph B. Yavitt, Kyle E. Harms, Milton N. Garcia, S. Joseph Wright
Seasonal Changes In Soil Organic Matter After A Decade Of Nutrient Addition In A Lowland Tropical Forest, Benjamin L. Turner, Joseph B. Yavitt, Kyle E. Harms, Milton N. Garcia, S. Joseph Wright
Faculty Publications
© 2015, US Government. Soil organic matter is an important pool of carbon and nutrients in tropical forests. The majority of this pool is assumed to be relatively stable and to turn over slowly over decades to centuries, although changes in nutrient status can influence soil organic matter on shorter timescales. We measured carbon, nitrogen, and phosphorus concentrations in soil organic matter and leaf litter over an annual cycle in a long-term nutrient addition experiment in lowland tropical rain forest in the Republic of Panama. Total soil carbon was not affected by a decade of factorial combinations of nitrogen, phosphorus, …
2015 Annual Report, Louisiana Rice Research Board, Lsu Agcenter
2015 Annual Report, Louisiana Rice Research Board, Lsu Agcenter
Louisiana Rice Research Board Annual Report
No abstract provided.
Cumulative Systolic Bp And Changes In Urine Albuminto-Creatinine Ratios In Nondiabetic Participants Of The Multi-Ethnic Study Of Atherosclerosis, Paul Zemaitis, Kiang Liu, David R. Jacobs, Mary Cushman, Ramon Durazo-Arvizu, David Shoham, Walter Palmas, Richard Cooper, Holly Kramer
Cumulative Systolic Bp And Changes In Urine Albuminto-Creatinine Ratios In Nondiabetic Participants Of The Multi-Ethnic Study Of Atherosclerosis, Paul Zemaitis, Kiang Liu, David R. Jacobs, Mary Cushman, Ramon Durazo-Arvizu, David Shoham, Walter Palmas, Richard Cooper, Holly Kramer
Faculty Publications
Background and objectives Cumulative exposure to elevated systolic BP (cumSBP) may affect progression of urine albumin excretion in the absence of diabetes. The objective of this study was to examine the association between cumSBP exposure and progression of spot urine albumin-to-creatinine ratio (UACR) in a multi-ethnic cohort of adults without diabetes. Design, setting, participants,&measurements The analysis included 3789 participants without severely increased urine albumin excretion or diabetes in the Multi-Ethnic Study of Atherosclerosis, a cohort of 6814 adults aged 45– 84 years. UACR was measured at baseline and approximately 1.6, 3.1, and 9.4 years after the baseline examination. cumSBP was …
"Go Not Far To Dine" Pedagogical Approaches To Sustainable Consumption In The Eighteenth-Century Studies Classroom And Beyond, Marlon Pareja, Sher Li Ong, Michelle Merrill, Samara Anne Cahill
"Go Not Far To Dine" Pedagogical Approaches To Sustainable Consumption In The Eighteenth-Century Studies Classroom And Beyond, Marlon Pareja, Sher Li Ong, Michelle Merrill, Samara Anne Cahill
1650-1850: Ideas, Aesthetics, and Inquiries in the Early Modern Era
No abstract provided.
An Eighteenth-Century Plea For Sustainable Forestry Ostervald's Description Des Montagnes & Vallees Du Pays De Neuchatel (1764), Alexandra Cook
An Eighteenth-Century Plea For Sustainable Forestry Ostervald's Description Des Montagnes & Vallees Du Pays De Neuchatel (1764), Alexandra Cook
1650-1850: Ideas, Aesthetics, and Inquiries in the Early Modern Era
No abstract provided.
A Resistant-Starch Enriched Yogurt: Fermentability, Sensory Characteristics, And A Pilot Study In Children, Frank Greenway, Jolene Zheng, Kayanush Aryana, Nikhil Dhurandhar, Richard Tulley, John Finley, Michael Keenan, Roy Martin, Christine Pelkman, Douglas Olson
A Resistant-Starch Enriched Yogurt: Fermentability, Sensory Characteristics, And A Pilot Study In Children, Frank Greenway, Jolene Zheng, Kayanush Aryana, Nikhil Dhurandhar, Richard Tulley, John Finley, Michael Keenan, Roy Martin, Christine Pelkman, Douglas Olson
Faculty Publications
The rising prevalence of obesity and the vulnerability of the pediatric age group have highlighted the critical need for a careful consideration of effective, safe, remedial and preventive dietary interventions. Amylose starch (RS2) from high-amylose maize (HAM) ferments in the gut and affects body weight. One hundred and ten children, of 7-8 (n=91) or 13-14 (n=19) years of age scored the sensory qualities of a yogurt supplemented with either HAM-RS2 or an amylopectin starch. The amylopectin starch yogurt was preferred to the HAM-RS2-enriched yogurt by 7-8 year old panelists (P<0.0001). Appearance, taste, and sandiness scores given by 13- to 14-year-old panelists were more favorable for the amylopectin starch yogurt than for HAM-RS2-enriched yogurt (P<0.05). HAM-RS2 supplementation resulted in acceptable (≥6 on a 1-9 scale) sensory and hedonic ratings of the yogurt in 74% of subjects. Four children consumed a HAM-RS2-enriched yogurt for four weeks to test its fermentability in a clinical trial. Three adolescents, but not the single pre-pubertal child, had reduced stool pH (P=0.1) and increased stool short-chain fatty acids (SCFAs) (P<0.05) including increased fecal acetate (P=0.02), and butyrate (P=0.089) from resistant starch (RS) fermentation and isobutyrate (P=0.01) from protein fermentation post-treatment suggesting a favorable change to the gut microbiota. HAM-RS2 was not modified by pasteurization of the yogurt, and may be a palatable way to increase fiber intake and stimulate colonic fermentation in adolescents. Future studies are planned to determine the concentration of HAM-RS2 that offers the optimal safe and effective strategy to prevent excessive fat gain in children.
Effects Of Light Quality And Light Quantity On The Growth Kinetics Of A Louisiana Native Microalgal/Cyanobacterial Co-Culture, Jonathan Zell Barnett
Effects Of Light Quality And Light Quantity On The Growth Kinetics Of A Louisiana Native Microalgal/Cyanobacterial Co-Culture, Jonathan Zell Barnett
LSU Master's Theses
One of the most important factors controlling the growth of microalgae is light. Light quality and light quantity have a dramatic effect on the production of biomass, lipids and pigments of microalgae. In this research, a native Louisiana co-culture containing Chlorella vulgaris (microalgae) and Leptolyngbya sp (cyanobacteria) was studied to determine the effects of various wavelength distributions and irradiance levels on growth kinetics. Growth rates, biomass levels, lipid contents and chlorophyll-a production was examined in batch cultures to determine which color light was optimum for cultivation. At 80 µmol/m^2-sec the species shifted from microalgae dominant to cyanobacteria dominant. The impact …
Effects Of Milk Replacer And Multivitamin-Mineral Supplementation On Performance Of Heat Stressed Dairy Calves, Steven Joseph Blair
Effects Of Milk Replacer And Multivitamin-Mineral Supplementation On Performance Of Heat Stressed Dairy Calves, Steven Joseph Blair
LSU Master's Theses
Seventy-one Holstein calves were used to evaluate the effects of milk replacer (MR) feeding management alone or in combination with a multivitamin-electrolyte supplement on growth and mitigation of heat stress. Milk replacer treatments consisted of Land O’Lakes Herdmaker Supreme (20% CP, 20% fat) and Land O’Lakes Warm Front (27% CP, 10% fat). Calves received either 0 or 20 ml Palamountains Calf Boost® in MR once daily. Calves were offered treatments beginning on day 4. Calves on 27% CP : 10% fat MR were fed 2.72kg MR twice daily for the first three weeks of life, and 3.86kg twice daily until …
Evaluating The Effects Of Silicon And Nitrogen Fertilization On Wheat Production, Brandon White
Evaluating The Effects Of Silicon And Nitrogen Fertilization On Wheat Production, Brandon White
LSU Master's Theses
Silicon (Si) fertilization provides numerous benefits to plants which can in turn lead to improved crop yields. Field studies were established at multiple sites in Louisiana on alluvial flood plain soils to establish an optimum application rate for CaSiO3 slag for wheat (Triticum aestivum) and determine which parameters contribute to grain yield increases. Treatments were arranged in a randomized complete block design with four replications consisting of twelve treatments: a factorial combination of two N (101 and 145 kg ha-1) and five Si rates (0, 1, 2, 4.5, and 9 Mt ha-1 as calcium silicate slag - CaSiO3, 14% Si), …
Examining Healthy Food Accessibility In Baton Rouge, Louisiana Using A Huff-Modified 2sfca Method, Xuan Kuai
Examining Healthy Food Accessibility In Baton Rouge, Louisiana Using A Huff-Modified 2sfca Method, Xuan Kuai
LSU Master's Theses
Food accessibility refers to people’s ability to access the service of food providers. Disparities in healthy food accessibility have long been a public health concern. This study proposes a new approach modified from the popular 2-Step Floating Catchment Area (2SFCA) method to measure spatial access. By incorporating a self-adaptive kernel density function extracted from the Huff Model, the proposed new method is termed the Huff-modified 2SFCA method. It is then applied to measure the healthy food accessibility in East Baton Rouge Parish, Louisiana. The research accounts for the economically disadvantaged groups that may walk or depend on public transit for …
Identification Of The Causal Agent Of Leaf And Crown Rot Of Liriope In Louisiana, Carla Milena Proano
Identification Of The Causal Agent Of Leaf And Crown Rot Of Liriope In Louisiana, Carla Milena Proano
LSU Master's Theses
Leaf and crown rot of Liriope is an increasing problem affecting Liriope in the nursery and landscape for the past eight years primarily in the southeastern United States. Symptoms start with water soaking of leaves at the crown area, followed by yellowing of the entire leaf starting at the base. Affected crowns rot and leaves turn brown leading to death of the plants. Phytophthora palmivora and Fusarium oxysporum were isolated and identified from ‘Big Blue’ Liriope symptomatic plants taken from the nursery and landscape. The pathogens were positively identified by morphological features of the pathogens and then confirmed with polymerase …
Impact Of Algae On Sugar Mill Effluents: Water Treatment And Added Value Assessment, Jacob Stephen Foy
Impact Of Algae On Sugar Mill Effluents: Water Treatment And Added Value Assessment, Jacob Stephen Foy
LSU Master's Theses
Installations similar to Louisiana sugar mills have been proposed as potential biorefineries for sugarcane, energy cane, and sweet sorghum. The nutrient-rich wastewater generated from the milling process can be used as an algal growth medium. Simultaneously, algae can serve as a water treatment strategy to deplete these effluents of excess nitrogen, phosphorus, and organic carbon. In this research the effluents of a sugar mill were characterized for water quality and nutrient characteristics; the effluents were determined to be suitable for growth of a native Louisiana co-culture of microalgae and cyanobacteria (Chlorella vulgaris/Leptolyngbya sp.); growth rate, biomass productivity and nutrient uptake …
Salt Tolerance Of Lactococcus Lactis R-604 As Influenced By Exposure To Various Stress Conditions, Ernesto Emilio Gonzalez Duran
Salt Tolerance Of Lactococcus Lactis R-604 As Influenced By Exposure To Various Stress Conditions, Ernesto Emilio Gonzalez Duran
LSU Master's Theses
Lactococcus lactis is a dairy culture bacterium widely used in dairy products that contain salt (NaCl) such as cheese and salted butter. Osmotic conditions generally hinder the growth of both pathogen and desirable bacteria. It has been observed that many stress-induced proteins are produced after exposure to an environmental stress protecting the cell against other stresses since the first exposure starts the defense mechanisms of the cells creating an effect of cross-protection. If salt tolerance is enhanced in desirable bacteria they would survive better in salty environments. The objective of this study was to evaluate the salt tolerance of Lactococcus …
Antioxidant Activity Of Lutein Entrapped In Poly (Dl-Lactide Co-Glycolide) Acid And Plga/Chitosan Nanoparticles, Toni Borel Lousteau
Antioxidant Activity Of Lutein Entrapped In Poly (Dl-Lactide Co-Glycolide) Acid And Plga/Chitosan Nanoparticles, Toni Borel Lousteau
LSU Master's Theses
Polymeric nanocarriers improve cellular uptake, stability, solubility, and functionality of entrapped drugs and nutraceuticals. The hypothesis of this study was that entrapping lutein, a hydrophobic antioxidant, in different polymeric nanoparticles (NPs) will improve its stability and antioxidant activity. The following objectives were proposed: 1. Synthesize and characterize polymeric nanoparticles of poly lactic co-glycolic acid (PLGA) and PLGA NPs covered with a layer of chitosan (PLGA/Chi) from a physicochemical perspective, and 2. Assess functionality of the entrapped lutein as a function of type of polymer in which entrapped. Nanoparticles were synthesized by emulsion evaporation method. Characterization included size, zeta potential, and …
Life Cycle Analysis Of An Airlifted Recirculation Aqualculture Facility, Marlon Alberetos Greensword
Life Cycle Analysis Of An Airlifted Recirculation Aqualculture Facility, Marlon Alberetos Greensword
LSU Master's Theses
Airlift-equipped recirculating aquaculture systems (RAS) provide water-circulation, aeration, and degassing efficiently and reliably. This project investigated the need for biofilters in a fish hatchery environment to address biofouling of tank water from hatching eggs. Eggs of various fish species were selected and Biological Oxygen Demand (BOD), total Kjeldahl nitrogen (TKN), and protein loading and content were measured and compared. Means for all samples were: 0.67±0.05g BOD₅/g, 10.89 nitrogen±0.84% and the mean protein content 69.22±3.82%. A statistical analysis indicates that Rachycentron canadum (cobia) and Ictalurus punctatus (channel catfish) is the most representative of the multi-species lot when compared to Balantiocheilus melanopterus …