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Lsu General Catalog 2018-2019, Louisiana State University And Agricultural And Mechanical College Jan 2018

Lsu General Catalog 2018-2019, Louisiana State University And Agricultural And Mechanical College

LSU General Catalog

The LSU General Catalog describes all undergraduate and graduate departments and programs with degree requirements and courses offered for each one. The LSU General Catalog includes information on registration and financial aid as well as academic services offered to all students.

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Nanotechnology Considerations For Poultry And Livestock Production Systems - A Review, Mohamed I. El Sabry, Kenneth W. Mcmillin, Cristina M. Sabliov Jan 2018

Nanotechnology Considerations For Poultry And Livestock Production Systems - A Review, Mohamed I. El Sabry, Kenneth W. Mcmillin, Cristina M. Sabliov

Faculty Publications

© 2018 by Mohamed I. El Sabry. The global animal productivity should proportionally increase to meet the food needs of a growing population. This article presents an overview of the current and promising nano-applications in poultry and livestock production systems that could offer opportunities for improved efficiencies and productivity. Some basic information on nanotechnology and the economics of nanotechnology is provided. Poultry and animal production systems, current situation and available tools and techniques are presented in parallel with animal health care, animal nutrition, animal shetter and food processing nano-applications and their advantages. These applications are directly or indirectly related to …

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Characterization Of Prostate Cancer Cell Progression In Zebrafish Xenograft Model, Wei Xu, Brittany A. Foster, Mackenzie Richards, Kenneth R. Bondioli, Girish Shah, Christopher C. Green Jan 2018

Characterization Of Prostate Cancer Cell Progression In Zebrafish Xenograft Model, Wei Xu, Brittany A. Foster, Mackenzie Richards, Kenneth R. Bondioli, Girish Shah, Christopher C. Green

Faculty Publications

Early diagnosis of prostate cancer (PCa) is critical for the application of efficient treatment to PCa patients. However, the majority of PCas remains indolent from several months to several years before malignancy. Current diagnosis methods have limitations in their reliability and are inefficient in time cost. Thus, an efficient in vivo PCa cell xenograft model is highly desired for diagnostic studies in PCas. In the present study we present a standardized procedure to create a PCa cell xenograft model using zebrafish (Danio rerio) as the host. PC3-CTR cells, a cell line from adenocarcinoma with stable expression of calcitonin receptor (CRT), …

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Ex Vivo Gut Culture For Studying Differentiation And Migration Of Small Intestinal Epithelial Cells, Xiaofei Sun, Xing Fu, Min Du, Mei Jun Zhu Jan 2018

Ex Vivo Gut Culture For Studying Differentiation And Migration Of Small Intestinal Epithelial Cells, Xiaofei Sun, Xing Fu, Min Du, Mei Jun Zhu

Faculty Publications

© 2018 The Authors. Epithelial cultures are commonly used for studying gut health. However, due to the absence of mesenchymal cells and gut structure, epithelial culture systems including recently developed three-dimensional organoid culture cannot accurately represent in vivo gut development, which requires intense cross-regulation of the epithelial layer with the underlying mesenchymal tissue. In addition, organoid culture is costly. To overcome this, a new culture system was developed using mouse embryonic small intestine. Cultured intestine showed spontaneous peristalsis, indicating the maintenance of the normal gut physiological structure. During 10 days of ex vivo culture, epithelial cells moved along the gut …

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Louisiana Agriculture Winter, 2018, Lsu Agcenter Jan 2018

Louisiana Agriculture Winter, 2018, Lsu Agcenter

Louisiana Agriculture

No abstract provided.

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Medical Implications Of Space Radiation Exposure Due To Low-Altitude Polar Orbits, Jeffery C. Chancellor, Serena M. Auñon-Chancellor, John Charles Jan 2018

Medical Implications Of Space Radiation Exposure Due To Low-Altitude Polar Orbits, Jeffery C. Chancellor, Serena M. Auñon-Chancellor, John Charles

Faculty Publications

INTRODUCTION: Space radiation research has progressed rapidly in recent years, but there remain large uncertainties in predicting and extrapolating biological responses to humans. Exposure to cosmic radiation and solar particle events (SPEs) may pose a critical health risk to future spaceflight crews and can have a serious impact on all biomedical aspects of space exploration. The relatively minimal shielding of the cancelled 1960s Manned Orbiting Laboratory (MOL) program's space vehicle and the high inclination polar orbits would have left the crew susceptible to high exposures of cosmic radiation and high dose-rate SPEs that are mostly unpredictable in frequency and intensity. …

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2018 Annual Report, Louisiana Rice Research Board, Lsu Agcenter Jan 2018

2018 Annual Report, Louisiana Rice Research Board, Lsu Agcenter

Louisiana Rice Research Board Annual Report

No abstract provided.

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Reducing Cardiovascular Disparities Through Community-Engaged Implementation Research: A National Heart, Lung, And Blood Institute Workshop Report, George A. Mensah, Richard S. Cooper, Anna Maria Siega-Riz, Lisa A. Cooper, Justin D. Smith, C. Hendricks Brown, John M. Westfall, Elizabeth O. Ofili, Leshawndra N. Price, Sonia Arteaga, Melissa C. Green Parker, Cheryl R. Nelson, Bradley J. Newsome, Nicole Redmond, Rebecca A. Roper, Bettina M. Beech, Jada L. Brooks, Debra Furr-Holden, Samson Y. Gebreab, Wayne H. Giles, Regina Smith James, Tené T. Lewis, Ali H. Mokdad, Kari D. Moore, Joseph E. Ravenell, Al Richmond, Nancy E. Schoenberg, Mario Sims, Gopal K. Singh, Anne E. Sumner, Roberto P. Treviño, Karriem S. Watson, M. Larissa Avilés-Santa Jan 2018

Reducing Cardiovascular Disparities Through Community-Engaged Implementation Research: A National Heart, Lung, And Blood Institute Workshop Report, George A. Mensah, Richard S. Cooper, Anna Maria Siega-Riz, Lisa A. Cooper, Justin D. Smith, C. Hendricks Brown, John M. Westfall, Elizabeth O. Ofili, Leshawndra N. Price, Sonia Arteaga, Melissa C. Green Parker, Cheryl R. Nelson, Bradley J. Newsome, Nicole Redmond, Rebecca A. Roper, Bettina M. Beech, Jada L. Brooks, Debra Furr-Holden, Samson Y. Gebreab, Wayne H. Giles, Regina Smith James, Tené T. Lewis, Ali H. Mokdad, Kari D. Moore, Joseph E. Ravenell, Al Richmond, Nancy E. Schoenberg, Mario Sims, Gopal K. Singh, Anne E. Sumner, Roberto P. Treviño, Karriem S. Watson, M. Larissa Avilés-Santa

Faculty Publications

Cardiovascular disparities remain pervasive in the United States. Unequal disease burden is evident among population groups based on sex, race, ethnicity, socioeconomic status, educational attainment, nativity, or geography. Despite the significant declines in cardiovascular disease mortality rates in all demographic groups during the last 50 years, large disparities remain by sex, race, ethnicity, and geography. Recent data from modeling studies, linked micromap plots, and small-Area analyses also demonstrate prominent variation in cardiovascular disease mortality rates across states and counties, with an especially high disease burden in the southeastern United States and Appalachia. Despite these continued disparities, few large-scale intervention studies …

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Recognizing The Danger Zone: Response Of Female White-Tailed To Discrete Hunting Events, Jeffery D. Sullivan, Stephen S. Ditchkoff, Bret A. Collier, Charles R. Ruth, Joshua B. Raglin Jan 2018

Recognizing The Danger Zone: Response Of Female White-Tailed To Discrete Hunting Events, Jeffery D. Sullivan, Stephen S. Ditchkoff, Bret A. Collier, Charles R. Ruth, Joshua B. Raglin

Faculty Publications

The landscape of fear theory proposes that prey should utilize habitat over space and time such that demographic risk is minimized. White-Tailed deer Odocoileus virginianus respond to temporally and spatially predictable threats posed by humans consistent with the landscape of fear theory. However, few studies examining the response of deer to hunting have accounted for the localized nature of risk. To determine if white-Tailed deer are able to recognize and respond to risks posed by hunters relative to specific hunting locations, we equipped 38 female white-Tailed deer with GPS collars August-December 2013-2015. Deer were generally found to increase use of …

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Metabolic And Mechanical Effects Of Laddermill Graded Exercise Testing, Timothy D. Allerton, Conrad P. Earnest, Neil M. Johannsen Jan 2018

Metabolic And Mechanical Effects Of Laddermill Graded Exercise Testing, Timothy D. Allerton, Conrad P. Earnest, Neil M. Johannsen

Faculty Publications

The purpose of this study was to compare the metabolic responses and mechanical impact forces during a maximal graded exercise test (GXT) on a laddermill (LM) vs. a standard treadmill (TM). Twenty college-aged men (n = 10) and women completed a GXT on the TM and LM in random order. During the GXT, expired gases (VO2 and VCO2), heart rate, accelerometer data, blood lactate (BLa), and rating of perceived exertion (RPE) were collected in the last minute of each stage. Data were analyzed by paired t-tests and presented herein as mean ± SD. Treadmill exercise resulted in a higher VO2peak …

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Double-Crop Soybean Response To Potassium On Mid-Atlantic Coastal Plain And Piedmont Soils, Md Rasel Parvej, Anna S. Williams, David L. Holshouser, William H. Frame, Mark S. Reiter Jan 2018

Double-Crop Soybean Response To Potassium On Mid-Atlantic Coastal Plain And Piedmont Soils, Md Rasel Parvej, Anna S. Williams, David L. Holshouser, William H. Frame, Mark S. Reiter

Faculty Publications

Potassium fertilization research on soybean [Glycine max (L.) Merr.] double cropped with winter wheat (Triticum aestivum L.) is lacking. We characterized double-crop soybean response to fertilizer K across 22 Coastal Plain and Piedmont sites with and/or without wheat straw removal during 2013 to 2015. Mehlich-1 soil-K concentrations at 0- to 15- and 0- to 30-cm depths were better in explaining relative yield variability (r2 = 0.80), defining critical soil-K concentrations that ranged from 40 to 75 mg K kg–1 for 0- to 15-cm and 36 to 66 mg K kg–1 for 0- to 30-cm depths, and identifying K-deficient sites (100% …

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Correlation And Calibration Of Soil-Test Potassium From Different Soil Depths For Full-Season Soybean On Coarse-Textured Soils, Anna S. Williams, Md Rasel Parvej, David L. Holshouser, William H. Frame, Mark S. Reiter Jan 2018

Correlation And Calibration Of Soil-Test Potassium From Different Soil Depths For Full-Season Soybean On Coarse-Textured Soils, Anna S. Williams, Md Rasel Parvej, David L. Holshouser, William H. Frame, Mark S. Reiter

Faculty Publications

Quantifying soil-K availabilities at deeper depths may be necessary to determine optimum fertilizer-K rate for soybean [Glycine max (L.) Merr.] grown on low cation exchange capacity (CEC) soils that are prone to K leaching. We characterized full-season soybean response to fertilizer-K across 19 coarse-textured low- CEC sites during 2013 and 2014. Mehlich-1 soil-K concentrations at 0- to 15- and 0- to 30-cm depths better correlated with relative yield and explained 90% of relative yield variation compared to 77% for 0- to 60-cm depth. Critical soil-K concentrations were similar for relative yield, V5 plant-K concentration, and R2 leaf-K concentration, ranging from …

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Gluten-Free Bakery And Pasta Products: Prevalence And Quality Improvement, Yupeng Gao, Marlene E. Janes, Busarawan Chaiya, Margaret A. Brennan, Charles S. Brennan, Witoon Prinyawiwatkul Jan 2018

Gluten-Free Bakery And Pasta Products: Prevalence And Quality Improvement, Yupeng Gao, Marlene E. Janes, Busarawan Chaiya, Margaret A. Brennan, Charles S. Brennan, Witoon Prinyawiwatkul

Faculty Publications

An increasing demand of gluten-free (GF) products is caused by a growing number of diagnosed coeliacs and a consumption trend to eliminate allergenic proteins from diet. Driven by the rapidly growing market, comprehensive understanding of GF products is necessary. The purpose of this review was to concisely present an overview of various approaches to improve physicochemical and sensory qualities of GF bread, cake/muffin and pasta/noodle products. Some novel techniques used in GF products were discussed in this review. These techniques included the use of different alternative flours (including GF cereals, pseudo-cereals, legume flours, fruit and vegetable powders and seafood powders), …

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Investigating The Role Of Mitochondrial Respiratory Dysfunction During Hexavalent Chromium-Induced Lung Carcinogenesis, James T.F. Wise, Lei Wang, Michael C. Alstott, Ntube N.O. Ngalame, Yuting Wang, Zhuo Zhang, Xianglin Shi Jan 2018

Investigating The Role Of Mitochondrial Respiratory Dysfunction During Hexavalent Chromium-Induced Lung Carcinogenesis, James T.F. Wise, Lei Wang, Michael C. Alstott, Ntube N.O. Ngalame, Yuting Wang, Zhuo Zhang, Xianglin Shi

Faculty Publications

Hexavalent chromium [Cr(VI)] is a lung carcinogen and its complete mechanism of action remains to be investigated. Metabolic reprogramming of key energy metabolism pathways (e.g., increased anaerobic glycolysis in the presence of oxygen or “Warburg effect,” dysregulated mitochondrial function, and lipogenesis) are important to cancer cell and tumor survival and growth. In our current understanding of Cr(VI)-induced carcinogenesis, the role for metabolic reprogramming remains unclear. In this study, we treated human lung epithelial cells (BEAS-2B) with Cr(VI) for 6 months and obtained malignantly transformed cells from an isolated colony grown in soft agar. We also used Cr(VI)-transformed cells from two …

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Intramyocellular Lipid Droplet Size Rather Than Total Lipid Content Is Related To Insulin Sensitivity After 8 Weeks Of Overfeeding, Jeffrey D. Covington, Darcy L. Johannsen, Paul M. Coen, David H. Burk, Diana N. Obanda, Philip J. Ebenezer, Charmaine S. Tam, Bret H. Goodpaster, Eric Ravussin, Sudip Bajpeyi Dec 2017

Intramyocellular Lipid Droplet Size Rather Than Total Lipid Content Is Related To Insulin Sensitivity After 8 Weeks Of Overfeeding, Jeffrey D. Covington, Darcy L. Johannsen, Paul M. Coen, David H. Burk, Diana N. Obanda, Philip J. Ebenezer, Charmaine S. Tam, Bret H. Goodpaster, Eric Ravussin, Sudip Bajpeyi

Faculty Publications

© 2017 The Obesity Society Objective: Intramyocellular lipid (IMCL) is inversely related to insulin sensitivity in sedentary populations, yet no prospective studies in humans have examined IMCL accumulation with overfeeding. Methods: Twenty-nine males were overfed a high-fat diet (140% caloric intake, 44% from fat) for 8 weeks. Measures of IMCL, whole-body fat oxidation from a 24-hour metabolic chamber, muscle protein extracts, and muscle ceramide measures were obtained before and after the intervention. Results: Eight weeks of overfeeding did not increase overall IMCL. The content of smaller lipid droplets peripherally located in the myofiber decreased, while increases in larger droplets correlated …

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Effect Of Silicate Slag Application On Wheat Grown Under Two Nitrogen Rates, Brandon White, Brenda S. Tubana, Tapasya Babu, Henry Mascagni, Flavia Agostinho, Lawrence E. Datnoff, Steve Harrison Dec 2017

Effect Of Silicate Slag Application On Wheat Grown Under Two Nitrogen Rates, Brandon White, Brenda S. Tubana, Tapasya Babu, Henry Mascagni, Flavia Agostinho, Lawrence E. Datnoff, Steve Harrison

Faculty Publications

Field studies were established on the alluvial floodplain soils in Louisiana, from 2013 to 2015, to evaluate the effect of silicate slag applications on productivity of wheat (Triticum aestivum), under sufficient and high nitrogen (N) application rates. 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 N ha-1) and five silicate slag rates (0, 1, 2, 4.5, and 9 Mg ha-1), and two control plots (with and without lime). Nitrogen had a greater impact on wheat productivity than silicate slag application. Wheat grain …

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Incorporating Flaxseed (Linum Usitatissimum) Oil Into Queso Blanco At Different Stages Of The Cheese Manufacturing Process, Cristhiam Gurdian, Vondel Reyes, Emmanuel Kyereh, Franklin Bonilla, Cesar Galindo, Alexander Chouljenko, Kevin Mis Solval, Charles Boeneke, Joan M. King, Subramaniam Sathivel Dec 2017

Incorporating Flaxseed (Linum Usitatissimum) Oil Into Queso Blanco At Different Stages Of The Cheese Manufacturing Process, Cristhiam Gurdian, Vondel Reyes, Emmanuel Kyereh, Franklin Bonilla, Cesar Galindo, Alexander Chouljenko, Kevin Mis Solval, Charles Boeneke, Joan M. King, Subramaniam Sathivel

Faculty Publications

The objective of this study was to evaluate the physicochemical and microbial properties of queso blanco (QB) with flaxseed oil (FO) incorporated at different stages of the cheese manufacturing process. Whole milk was homogenized, coagulated with citric acid, salted with NaCl, and the resulting curds were pressed. Then QBFO was produced by incorporating FO during homogenization (QBFO-H), coagulation (QBFO-C), or salting (QBFO-S). The cheeses were stored at 8 °C for 30 days. Significantly lower lipid oxidation in QB was observed when FO was added during coagulation or salting compared to homogenization. However, lipid oxidation values of QBFO-H did not exceed …

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Effect Of Lactation On Conceptus-Maternal Interactions At The Initiation Of Implantation In Cattle: I. Effects On The Conceptus Transcriptome And Amino Acid Composition Of The Uterine Luminal Fluid, Niamh Forde, Constantine A. Simintiras, Roger G. Sturmey, Alexander Graf, Eckhard Wolf, Helmut Blum, Pat Lonergan Dec 2017

Effect Of Lactation On Conceptus-Maternal Interactions At The Initiation Of Implantation In Cattle: I. Effects On The Conceptus Transcriptome And Amino Acid Composition Of The Uterine Luminal Fluid, Niamh Forde, Constantine A. Simintiras, Roger G. Sturmey, Alexander Graf, Eckhard Wolf, Helmut Blum, Pat Lonergan

Faculty Publications

Approximately 65-75 days postpartum (dpp), the estrous cycles of nonlactating (dried off immediately postpartum: n = 12) and lactating (n = 13) Holstein Friesian cows were synchronized and on day 7 a single blastocyst derived from superovulated nulliparous Holstein Friesian heifers was transferred to each cow. A control group of nulliparous heifers (n = 8) were synchronized, inseminated to a standing heat, and slaughtered on the same day as nonlactating and lactating recipients (day 19; estrus = day 0). The uterine horn ipsilateral to the corpus luteum was flushed with 10 ml phosphate-buffered saline and the conceptus, and uterine luminal …

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Association Mapping For Traits Related To Nitrogen Use Efficiency In Tropical Maize Lines Under Field Conditions, Júlia Silva Morosini, Leandro De Freitas Mendonça, Danilo Hottis Lyra, Giovanni Galli, Miriam Suzane Vidotti, Roberto Fritsche-Neto Dec 2017

Association Mapping For Traits Related To Nitrogen Use Efficiency In Tropical Maize Lines Under Field Conditions, Júlia Silva Morosini, Leandro De Freitas Mendonça, Danilo Hottis Lyra, Giovanni Galli, Miriam Suzane Vidotti, Roberto Fritsche-Neto

Faculty Publications

Aims: Nitrogen deficiency is one of the most critical abiotic stresses for maize (Zea mays) cultivation worldwide. For a productive and sustainable scenario, developing genotypes more efficient in nitrogen use is essential. This study aimed to identify single nucleotide polymorphism (SNP) markers associated with nitrogen use efficiency (NUE) traits under field conditions and candidate genes related to these markers by genome-wide association study (GWAS). Methods: Sixty-four tropical maize inbred lines were evaluated in ideal and low nitrogen conditions for total root length (TRL) and low nitrogen tolerance index (LNTI). GWAS was performed using a fixed and random model circulating probability …

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Growth And Development Of Two Broiler Strains With Low Protein And Crystalline Amino Acid Supplemented Diets, Chaoyang Li Nov 2017

Growth And Development Of Two Broiler Strains With Low Protein And Crystalline Amino Acid Supplemented Diets, Chaoyang Li

LSU Master's Theses

The objective of this research was to compare the growth performance of broilers from two commercial breeds with control, low protein and low protein supplemented with crystalline amino acids diets. This was a randomized block design, and identical experiments were conducted on successively in two years. In each experiment, day-old chicks, Ross 708 broilers and Cobb 405 broilers, were randomly assigned into three dietary treatments: 1) positive control, 2) low crude protein (LP), and 3) LP + crystalline amino acids (CAA). A three phase feeding program was used. Feed and water were provided ad-libitum. On d 12, 19, 26, 33, …

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The Influence Of Student Housing And Selected Academic And Personal Demographic Characteristics On The Retention Of Students From The Second To Third Year At A Research University (Ru/Vh), Loren S. Mcintyre Nov 2017

The Influence Of Student Housing And Selected Academic And Personal Demographic Characteristics On The Retention Of Students From The Second To Third Year At A Research University (Ru/Vh), Loren S. Mcintyre

LSU Doctoral Dissertations

The purpose of this study was to determine the influence of participation in a content-based residential college versus non-participation in a content-based residential college on retention in the second year of study at a research university-very high research activity (RU/VH) in the southern portion of the United States. The dependent variable of the study was whether or not the traditional-age, first-time freshman students enrolled at the study institution in their fifth semester, or second to third year, of study. The target population for this study was defined as traditional-age, first-time college freshmen who enrolled in a research university-very high research …

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Evaluating The Effect Of Chitosan, Water-Soluble Chitosan And Chitosan Application Techniques On The Quality Of Refrigerated Catfish Fillets, Franklin Bonilla Torres Nov 2017

Evaluating The Effect Of Chitosan, Water-Soluble Chitosan And Chitosan Application Techniques On The Quality Of Refrigerated Catfish Fillets, Franklin Bonilla Torres

LSU Master's Theses

Chitosan (CH) is a biopolymer synthetized by deacetylation of chitin, it is found in the exoskeleton of crustaceans, cell wall of fungi, and insects. CH’s water insolubility limited the used of this compound in some food systems. However, enzymatic hydrolysis of CH yields water-soluble chitosan (WSC). The aim of this study was to evaluate the effect of chitosan, water-soluble chitosan, and chitosan application techniques on the quality of refrigerated catfish fillets. This research was conducted in two separated studies. In the first study, three solution treatments were prepared: (1) a 1% acetic acid (AA) solution, (2) a 0.5% CH solution …

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Incorporation Of Biorationals And Trap Crop For Stink Bug Management In Soybeans, Kukuh Hernowo Nov 2017

Incorporation Of Biorationals And Trap Crop For Stink Bug Management In Soybeans, Kukuh Hernowo

LSU Doctoral Dissertations

Stink bugs are one of the most important seed sucking pests impacting soybean production in Louisiana. Exploration of chemicals that exhibit attraction or repellent activities toward this major pest would be beneficial to develop a push-pull strategy against this pest complex. Spinosad and neem are two commercially available natural insecticides that were claimed to have attractant and repellent activities against stink bugs. To test the potential of these chemicals, a series of experiments was conducted to investigate the olfactory, tactile, feeding, and oviposition preference of stink bugs toward different commercial spinosad products and neem. Additionally, two years of field experiments …

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Effects Of Soil Silicon Amendment And Nitrogen Levels On Rice Insect Pest Complex, James Michael P. Villegas Nov 2017

Effects Of Soil Silicon Amendment And Nitrogen Levels On Rice Insect Pest Complex, James Michael P. Villegas

LSU Master's Theses

Rice plants are consistently subjected to various pressures by insect pests throughout the growing season. The main insect pest complex reported in Louisiana are the rice water weevil (major early-season insect pest), fall armyworm (sporadic early-season pest), sugarcane borer and rice stalk borer (long- established but sporadic stem boring pests), Mexican rice borer (an invasive stem-boring pest), and rice stink bug (major late-season pest). Soil silicon amendment has been shown to enhance plant resistance against herbivorous pests. Rice is a typical silicon-accumulating graminaceous crop. Field and greenhouse experiments were conducted from 2015 to 2017 to investigate the effects of soil …

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Sweetpotato Virus C And Its Contribution To The Potyvirus Complex In Sweetpotato (Ipomoea Batatas), Favio E. Herrera Eguez Nov 2017

Sweetpotato Virus C And Its Contribution To The Potyvirus Complex In Sweetpotato (Ipomoea Batatas), Favio E. Herrera Eguez

LSU Doctoral Dissertations

In Louisiana, sweetpotato (Ipomoea batatas) is infected in Louisiana by the four ubiquitous potyviruses: Sweetpotato feathery mottle virus (SPFMV), Sweetpotato virus G (SPVG), Sweetpotato virus 2 (SPV2) and the strain of SPFMV previously known as the common strain, recently renamed as Sweetpotato virus C (SPVC). These four viruses belong to the Potyviridae family, with single stranded RNA of ~11kb. In this group of plant viruses, a single polyprotein is coded entirely but later cleaved into ten mature proteins: P1, HC-pro, P3, 6K1, CI, 6K2, NIa-VPg, NIa-Pro Nib and Coat Protein (CP). In sweetpotato potyviruses, two additional open reading …

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Alteration Of Gut Microbiota And Other Properties In Zucker Diabetic Fatty Rats After Antibiotics, Diet And Donor Transplant, Ryan Page Nov 2017

Alteration Of Gut Microbiota And Other Properties In Zucker Diabetic Fatty Rats After Antibiotics, Diet And Donor Transplant, Ryan Page

LSU Master's Theses

The compositions of bacterial communities inhabiting the human gut are associated with regulating energy balance, immune response, and neurological functions. Many of these benefits are attributed to byproducts of bacteria that feed on fermentable fibers. Research has shown that obese or lean host can transfer their phenotype to germ-free recipients, via microbiota transplant, without alteration in recipient diet. However, transfer may be attenuated by established microbial communities in conventionally-raised rodents or other species. A knockdown of recipient communities may be required before a transplant for microbiota of donors to populate gut of recipient. This study examined whether obese Zucker Diabetic …

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The Role Of Histone H2a.Z Abundance In Modulating Responses To Phosphorus Deficiency In Rice, Sara Zahraeifard Nov 2017

The Role Of Histone H2a.Z Abundance In Modulating Responses To Phosphorus Deficiency In Rice, Sara Zahraeifard

LSU Doctoral Dissertations

Histone variants contribute to chromatin complexity by creating specialized nucleosomes. Here, to investigate the pattern of H2A.Z histone variant distribution and its role in modulating gene expression in rice (Oryza sativa L.), we performed genome-wide profiling of ARP6-dependent H2A.Z deposition in rice seedlings. We demonstrated that under controlled conditions, the majority of H2A.Z deposition is within protein-coding genes (PCG), and the most highly expressed genes are enriched with H2A.Z at their 5’ ends near the transcription start site (TSS), whereas the medium- to low-expressed genes contain H2A.Z across the entire gene. Based on H2A.Z deposition, we categorized genes into …

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Effect Of Hot Water Conditioning On Microbial Safety And Quality Of In-Shell Pecans, Karuna Kharel Nov 2017

Effect Of Hot Water Conditioning On Microbial Safety And Quality Of In-Shell Pecans, Karuna Kharel

LSU Master's Theses

Hot water conditioning of in-shell pecans is one common practice followed by industries to facilitate shelling. It also acts as a preventive control for potential microbiological contamination that might occur during pre- and post-harvest processes. However, heat treatment may have an effect on the eating quality of nuts. The main objectives of the study were to develop a post-harvest hot water treatment intervention as a kill step to destroy foodborne pathogens on in-shell pecans and evaluate the effect of treatments on physicochemical properties, consumer acceptance and purchase intent of dehulled and roasted pecans. The time (1-5 min) and temperature (70, …

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Evaluation Of Winter Management Methods To Enhance Survival Of The Giant Salvinia Weevil, Cyrtobagous Salviniae, Lori Robyn Moshman Nov 2017

Evaluation Of Winter Management Methods To Enhance Survival Of The Giant Salvinia Weevil, Cyrtobagous Salviniae, Lori Robyn Moshman

LSU Master's Theses

Giant salvinia (Salvinia molesta Mitchell) is a noxious aquatic weed in the southeastern United States. Dense plant mats create ecological and economic consequences by displacing native species and impacting freshwater industries. Biological control programs using the salvinia weevil (Cyrtobagous salviniae Calder and Sands, Coleoptera: Curculionidae) have limited efficacy in giant salvinia’s northernmost range due to the weevil’s low cold tolerance and long-term establishment rates. Spunbonded polypropylene (SBP) fabrics and manipulation of plant density were evaluated as two strategies for managing giant salvinia mats during winter. Greenhouse, laboratory, and field experiments were conducted to determine the suitability of these …

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The Stadium Effect: Rodent Damage Patterns In Rice Fields Explored Using Giving-Up Densities, Clare R. Jones, Renee P. Lorica, James M. Villegas, Angelee F. Ramal, Finbarr G. Horgan, Grant R. Singleton, Alexander M. Stuart Nov 2017

The Stadium Effect: Rodent Damage Patterns In Rice Fields Explored Using Giving-Up Densities, Clare R. Jones, Renee P. Lorica, James M. Villegas, Angelee F. Ramal, Finbarr G. Horgan, Grant R. Singleton, Alexander M. Stuart

Faculty Publications

Rodents are globally important pre-harvest pests of rice. In Southeast Asia, rodent damage to growing rice crops is commonly concentrated towards the center of rice fields, away from the field edge, resulting in a clear pattern known as the “stadium effect.” To further understand this behavior of rodent pests and to develop recommendations for future research and management, we examined the relation between giving-up densities (GUDs) and damage patterns. In Tanay, Luzon, Philippines, GUD trays containing pieces of coconut in a matrix of sand were placed at 4 different distances from the field edge to quantify the perceived risk of …

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