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Break Down In Order To Build Up: Decomposing Small Molecules For Fragment-Based Drug Design With Emolfrag, Tairan Liu, Misagh Naderi, Chris Alvin, Supratik Mukhopadhyay, Michal Brylinski Apr 2017

Break Down In Order To Build Up: Decomposing Small Molecules For Fragment-Based Drug Design With Emolfrag, Tairan Liu, Misagh Naderi, Chris Alvin, Supratik Mukhopadhyay, Michal Brylinski

Faculty Publications

© 2017 American Chemical Society. Constructing high-quality libraries of molecular building blocks is essential for successful fragment-based drug discovery. In this communication, we describe eMolFrag, a new open-source software to decompose organic compounds into nonredundant fragments retaining molecular connectivity information. Given a collection of molecules, eMolFrag generates a set of unique fragments comprising larger moieties, bricks, and smaller linkers connecting bricks. These building blocks can subsequently be used to construct virtual screening libraries for targeted drug discovery. The robustness and computational performance of eMolFrag is assessed against the Directory of Useful Decoys, Enhanced database conducted in serial and parallel modes …

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Systematic Assessment Of Surfactants For Matrix-Assisted Laser Desorption/Ionization Mass Spectrometry Imaging, Bijay Banstola, Eulalie T. Grodner, Fan Cao, Fabrizio Donnarumma, Kermit K. Murray Apr 2017

Systematic Assessment Of Surfactants For Matrix-Assisted Laser Desorption/Ionization Mass Spectrometry Imaging, Bijay Banstola, Eulalie T. Grodner, Fan Cao, Fabrizio Donnarumma, Kermit K. Murray

Faculty Publications

© 2017 Elsevier B.V. A systematic method for evaluation of MALDI profiling and imaging was developed and applied to the use of three surfactants, sodium dodecyl sulfate (SDS), Triton X-100, and Tween 20, on rat brain tissue. For profiling studies, mass spectra were acquired from regular arrays of spots with manually deposited surfactant and matrix. The studies recorded the total number of peaks in the mass spectra from 2 to 20 kDa and compared the number of peaks and peak intensities with and without surfactant. It was found that SDS decreases the total number of peaks at all concentrations but …

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A Near-Infrared, Wavelength-Shiftable, Turn-On Fluorescent Probe For The Detection And Imaging Of Cancer Tumor Cells, Zhenhua Shen, Bijeta Prasai, Yuko Nakamura, Hisataka Kobayashi, Milcah S. Jackson, Robin L. Mccarley Apr 2017

A Near-Infrared, Wavelength-Shiftable, Turn-On Fluorescent Probe For The Detection And Imaging Of Cancer Tumor Cells, Zhenhua Shen, Bijeta Prasai, Yuko Nakamura, Hisataka Kobayashi, Milcah S. Jackson, Robin L. Mccarley

Faculty Publications

© 2017 American Chemical Society. Fast, selective, and noninvasive reporting of intracellular cancer-associated events and species will lead to a better understanding of tumorigenesis at the molecular level and development of precision medicine approaches in oncology. Overexpressed reductase presence in solid tumor cells is key to cancer progression and protection of those diseased cells from the oxidative effects of therapeutics meant to kill them. Human NAD(P)H:quinone oxidoreductase isozyme I (hNQO1), a cytoprotective 2-electron-specific reductase found at unusually high activity levels in cancer cells of multiple origins, has attracted significant attention due to its major role in metastatic pathways and its …

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Characterization Of A Putative Ccm Transporter, Cia8, In Chlamydomonas Reinhardtii Using Rnai Knockdown Mutants, Joshua Schwartzenburg Apr 2017

Characterization Of A Putative Ccm Transporter, Cia8, In Chlamydomonas Reinhardtii Using Rnai Knockdown Mutants, Joshua Schwartzenburg

Honors Capstones

No abstract provided.

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Perceived Sleep Quality And Subjective Social Class As Predictors Of Alcohol Consequences And Drinking Motivations In College Students, Shelby Alexandra Stewart Apr 2017

Perceived Sleep Quality And Subjective Social Class As Predictors Of Alcohol Consequences And Drinking Motivations In College Students, Shelby Alexandra Stewart

Honors Capstones

No abstract provided.

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A Latitudinal Phylogeographic Diversity Gradient In Birds, Brian Tilston Smith, Glenn F. Seeholzer, Michael G. Harvey, Andrés M. Cuervo, Robb T. Brumfield Apr 2017

A Latitudinal Phylogeographic Diversity Gradient In Birds, Brian Tilston Smith, Glenn F. Seeholzer, Michael G. Harvey, Andrés M. Cuervo, Robb T. Brumfield

Faculty Publications

© 2017 Smith et al. High tropical species diversity is often attributed to evolutionary dynamics over long timescales. It is possible, however, that latitudinal variation in diversification begins when divergence occurs within species. Phylogeographic data capture this initial stage of diversification in which populations become geographically isolated and begin to differentiate genetically. There is limited understanding of the broader implications of intraspecific diversification because comparative analyses have focused on species inhabiting and evolving in restricted regions and environments. Here, we scale comparative phylogeography up to the hemisphere level and examine whether the processes driving latitudinal differences in species diversity are …

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Dielectric Properties Of Biomass/Biochar Mixtures At Microwave Frequencies, Candice Ellison, Murat Sean Mckeown, Samir Trabelsi, Dorin Boldor Apr 2017

Dielectric Properties Of Biomass/Biochar Mixtures At Microwave Frequencies, Candice Ellison, Murat Sean Mckeown, Samir Trabelsi, Dorin Boldor

Faculty Publications

Material dielectric properties are important for understanding their response to microwaves. Carbonaceous materials are considered good microwave absorbers and can be mixed with dry biomasses, which are otherwise low-loss materials, to improve the heating efficiency of biomass feedstocks. In this study, dielectric properties of pulverized biomass and biochar mixtures are presented from 0.5 GHz to 20 GHz at room temperature. An open-ended coaxial-line dielectric probe and vector network analyzer were used to measure dielectric constant and dielectric loss factor. Results show a quadratic increase of dielectric constant and dielectric loss with increasing biochar content. In measurements on biochar, a strong …

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Expression Profiling Coupled With In-Silico Mapping Identifies Candidate Genes For Reducing Aflatoxin Accumulation In Maize, Ramesh Dhakal, Chenglin Chai, Ratna Karan, Gary L. Windham, William P. Williams, Prasanta K. Subudhi Apr 2017

Expression Profiling Coupled With In-Silico Mapping Identifies Candidate Genes For Reducing Aflatoxin Accumulation In Maize, Ramesh Dhakal, Chenglin Chai, Ratna Karan, Gary L. Windham, William P. Williams, Prasanta K. Subudhi

Faculty Publications

Aflatoxin, produced by Aspergillus flavus, is hazardous to health of humans and livestock. The lack of information about large effect QTL for resistance to aflatoxin accumulation is a major obstacle to employ marker-assisted selection for maize improvement. The understanding of resistance mechanisms of the host plant and the associated genes is necessary for improving resistance to A. flavus infection. A suppression subtraction hybridization (SSH) cDNA library was made using the developing kernels of Mp715 (resistant inbred) and B73 (susceptible inbred) and 480 randomly selected cDNA clones were sequenced to identify differentially expressed genes (DEGs) in response to A. flavus infection …

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Erratum To: Rapid Transcriptional Plasticity Of Duplicated Gene Clusters Enables A Clonally Reproducing Aphid To Colonise Diverse Plant Species. [Genome Biol. 18 (2017)(27)] Doi: 10.1186/S13059-016-1145-3, Thomas C. Mathers, Yazhou Chen, Gemy Kaithakottil, Fabrice Legeai, Sam T. Mugford, Patrice Baa-Puyoulet, Anthony Bretaudeau, Bernardo Clavijo, Stefano Colella, Olivier Collin, Tamas Dalmay, Thomas Derrien, Honglin Feng, Toni Gabaldón, Anna Jordan, Irene Julca, Graeme J. Kettles, Krissana Kowitwanich, Dominique Lavenier, Paolo Lenzi, Sara Lopez-Gomollon, Damian Loska, Daniel Mapleson, Florian Maumus, Simon Moxon, Daniel R.G. Price, Akiko Sugio, Manuella Van Munster, Marilyne Uzest, Darren Waite, Georg Jander, Denis Tagu, Alex C.C. Wilson Apr 2017

Erratum To: Rapid Transcriptional Plasticity Of Duplicated Gene Clusters Enables A Clonally Reproducing Aphid To Colonise Diverse Plant Species. [Genome Biol. 18 (2017)(27)] Doi: 10.1186/S13059-016-1145-3, Thomas C. Mathers, Yazhou Chen, Gemy Kaithakottil, Fabrice Legeai, Sam T. Mugford, Patrice Baa-Puyoulet, Anthony Bretaudeau, Bernardo Clavijo, Stefano Colella, Olivier Collin, Tamas Dalmay, Thomas Derrien, Honglin Feng, Toni Gabaldón, Anna Jordan, Irene Julca, Graeme J. Kettles, Krissana Kowitwanich, Dominique Lavenier, Paolo Lenzi, Sara Lopez-Gomollon, Damian Loska, Daniel Mapleson, Florian Maumus, Simon Moxon, Daniel R.G. Price, Akiko Sugio, Manuella Van Munster, Marilyne Uzest, Darren Waite, Georg Jander, Denis Tagu, Alex C.C. Wilson

Faculty Publications

After publication of this article [1] we noticed that reference 50 was incorrect. The correct reference 50 is as follows: Santamaría S, Gonzalez-Cabrera J, Martinez M, Grbic V, Castanera P, Diaz L, Ortego F. Digestive proteases in bodies and faeces of the two-spotted spider mite, Tetranychus urticae. J Insect Physiol. 2015; 78:69-77 http://www.sciencedirect.com/science/article/pii/S0022191015001018.

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Vitrification As An Alternative Approach For Sperm Cryopreservation In Marine Fishes, Rafael Cuevas-Uribe, E. Hu, Harry Daniels, Adriane O. Gill, Terrence R. Tiersch Apr 2017

Vitrification As An Alternative Approach For Sperm Cryopreservation In Marine Fishes, Rafael Cuevas-Uribe, E. Hu, Harry Daniels, Adriane O. Gill, Terrence R. Tiersch

Faculty Publications

The Southern Flounder Paralichthys lethostigma is a high-value species and a promising aquaculture candidate. Because sperm volume can be limited in this species (<500 >µL), new sperm cryopreservation methods need to be evaluated. Vitrification is an alternative to conventional slow-rate freezing, whereby small volumes are cryopreserved at high cooling rates (>1,000°C/min). The goal of this work was to develop a standardized approach for vitrification of Southern Flounder sperm. The specific objectives were to (1) evaluate thawing methods and vitrification solutions, (2) evaluate the postthaw membrane integrity of sperm vitrified in different cryoprotectant solutions, (3) examine the relationship between membrane …

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Stage-Discharge Relationship In Tidal Channels, William S. Kearney, Giulio Mariotti, Linda A. Deegan, Sergio Fagherazz Apr 2017

Stage-Discharge Relationship In Tidal Channels, William S. Kearney, Giulio Mariotti, Linda A. Deegan, Sergio Fagherazz

Faculty Publications

Long-term records of the flow of water through tidal channels are essential to constrain the budgets of sediments and biogeochemical compounds in salt marshes. Statistical models which relate discharge to water level allow the estimation of such records from more easily obtained records of water stage in the channel. Here, we compare four different types of stage-discharge models, each of which captures different characteristics of the stage-discharge relationship. We estimate and validate each of these models on a 2-month long time series of stage and discharge obtained with an acoustic Doppler current profiler in a salt marsh channel. We find …

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Bile Acid Sodium Symporter Bass6 Can Transport Glycolate And Is Involved In Photorespiratory Metabolism In Arabidopsis Thaliana, Paul F. South, Berkley J. Walker, Amanda P. Cavanagh, Vivien Rolland, Murray Badger, Donald R. Ort Apr 2017

Bile Acid Sodium Symporter Bass6 Can Transport Glycolate And Is Involved In Photorespiratory Metabolism In Arabidopsis Thaliana, Paul F. South, Berkley J. Walker, Amanda P. Cavanagh, Vivien Rolland, Murray Badger, Donald R. Ort

Faculty Publications

© 2017, American Society of Plant Biologists. All rights reserved. Photorespiration is an energy-intensive process that recycles 2-phosphoglycolate, a toxic product of the Rubisco oxygenation reaction. The photorespiratory pathway is highly compartmentalized, involving the chloroplast, peroxisome, cytosol, and mitochondria. Though the soluble enzymes involved in photorespiration are well characterized, very few membrane transporters involved in photorespiration have been identified to date. In this work, Arabidopsis thaliana plants containing a T-DNA disruption of the bile acid sodium symporter BASS6 show decreased photosynthesis and slower growth under ambient, but not elevated CO2. Exogenous expression of BASS6 complemented this photorespiration mutant phenotype. In …

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Biogeography Of A Plant Invasion: Drivers Of Latitudinal Variation In Enemy Release, Warwick J. Allen, Laura A. Meyerson, David Cummings, John Anderson, Ganesh P. Bhattarai, James T. Cronin Apr 2017

Biogeography Of A Plant Invasion: Drivers Of Latitudinal Variation In Enemy Release, Warwick J. Allen, Laura A. Meyerson, David Cummings, John Anderson, Ganesh P. Bhattarai, James T. Cronin

Faculty Publications

© 2016 John Wiley & Sons Ltd Aim: The relationship between herbivory and latitude may differ between native and invasive plant taxa, which can generate biogeographical heterogeneity in the strength of enemy release. Our aim was to compare latitudinal gradients in herbivory between native and invasive plants and investigate whether gradients are driven by local adaptation or phenotypic plasticity. Location: North America. Methods: Using sympatric native and invasive lineages of the wetland grass Phragmites australis and the specialist gall-fly Lipara rufitarsis, we conducted a field survey to examine whether the relationship between herbivory (the proportion of stems galled) and latitude …

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S17rs Sgfb No. 7 (Graduate Student Symposium), Wokil Bam, Jack Green, Amanda Fontenot Apr 2017

S17rs Sgfb No. 7 (Graduate Student Symposium), Wokil Bam, Jack Green, Amanda Fontenot

Student Senate Enrolled Legislation

To allocate a maximum of three thousand four hundred fifteen dollars and zero cents ($3,415.00) from the Student Government Legislative Contingency Account to help with costs associated with organizing the 2017 Graduate Student Symposium on March 17th-19th at Louisiana Universities Marine Consortium (LUMCON), hosted by the Coast and Environment Graduate Organization (CEGO).

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Recent Applications Of X-Ray Grating Interferometry Imaging To Evaluate Flame Retardancy Performance Of Brominated Flame Retardant, Mutairu B. Olatinwo, Kyungmin Ham, Jonathan Mccarney, Shashidhara Marathe, Jinghua Ge, Gerald Knapp, Leslie G. Butler Apr 2017

Recent Applications Of X-Ray Grating Interferometry Imaging To Evaluate Flame Retardancy Performance Of Brominated Flame Retardant, Mutairu B. Olatinwo, Kyungmin Ham, Jonathan Mccarney, Shashidhara Marathe, Jinghua Ge, Gerald Knapp, Leslie G. Butler

Faculty Publications

© 2017 Elsevier Ltd In this work, fire inhibition performance of four flame retardant formulations of brominated flame retardant (BFR: GreenArmor®), antimony(III) oxide (Sb2O3) and high impact polystyrene (HIPS) is reported. The standard Underwriters Laboratory (UL 94) vertical burn test was applied for assessing the flame retardancy of a variety of polymer blends. A formulation having 13.3 wt% GreenArmor®, 4 wt% Sb2O3 and 82.7 wt% HIPS, named sample D, successfully passed the flame test and was rated V-0. The other formulations with deficient composition exhibited low flame retardancy, as expected. The X-ray grating interferometry method is introduced for probing the …

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Resveratrol Enhances Brown Adipocyte Formation And Function By Activating Amp-Activated Protein Kinase (Ampk) Α1 In Mice Fed High-Fat Diet, Songbo Wang, Xingwei Liang, Qiyuan Yang, Xing Fu, Meijun Zhu, B. D. Rodgers, Qingyan Jiang, Michael V. Dodson, Min Du Apr 2017

Resveratrol Enhances Brown Adipocyte Formation And Function By Activating Amp-Activated Protein Kinase (Ampk) Α1 In Mice Fed High-Fat Diet, Songbo Wang, Xingwei Liang, Qiyuan Yang, Xing Fu, Meijun Zhu, B. D. Rodgers, Qingyan Jiang, Michael V. Dodson, Min Du

Faculty Publications

© 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim Scope: Enhancing the formation and function of brown adipose tissue (BAT) increases thermogenesis and hence reduces obesity. Thus, we investigate the effects of resveratrol (Resv) on brown adipocyte formation and function in mouse interscapular BAT (iBAT). Methods and results: CD1 mice and stromal vascular cells (SVCs) isolated from iBAT were treated with Resv. Expression of brown adipogenic and thermogenic markers, and involvement of AMP-activated protein kinase (AMPK)α1 were assessed. In vivo, Resv-enhanced expression of brown adipogenic markers, PR domain-containing 16 (PRDM16) and thermogenic genes, uncoupling protein 1 (UCP1) and cytochrome C …

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Maternal Retinoids Increase Pdgfrα+ Progenitor Population And Beige Adipogenesis In Progeny By Stimulating Vascular Development, Bo Wang, Xing Fu, Xingwei Liang, Zhixiu Wang, Qiyuan Yang, Tiande Zou, Wei Nie, Junxing Zhao, Pengfei Gao, Mei Jun Zhu, Jeanene M. De Avila, Joseph Maricelli, Buel D. Rodgers, Min Du Apr 2017

Maternal Retinoids Increase Pdgfrα+ Progenitor Population And Beige Adipogenesis In Progeny By Stimulating Vascular Development, Bo Wang, Xing Fu, Xingwei Liang, Zhixiu Wang, Qiyuan Yang, Tiande Zou, Wei Nie, Junxing Zhao, Pengfei Gao, Mei Jun Zhu, Jeanene M. De Avila, Joseph Maricelli, Buel D. Rodgers, Min Du

Faculty Publications

© 2017 The Authors Maternal vitamin A intake varies but its impact on offspring metabolic health is unknown. Here we found that maternal vitamin A or retinoic acid (RA) administration expanded PDGFRα+ adipose progenitor population in progeny, accompanied by increased blood vessel density and enhanced brown-like (beige) phenotype in adipose tissue, protecting offspring from obesity. Blockage of retinoic acid signaling by either BMS493 or negative RA receptor (RARαDN) over-expression abolished the increase in blood vessel density, adipose progenitor population, and beige adipogenesis stimulated by RA. Furthermore, RA-induced beige adipogenesis was blocked following vascular endothelial growth factor receptor (VEGFR) 2 knock …

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Louisiana Agriculture Spring, 2017, Lsu Agcenter Apr 2017

Louisiana Agriculture Spring, 2017, Lsu Agcenter

Louisiana Agriculture

No abstract provided.

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Can Functional Traits Account For Phylogenetic Signal In Community Composition?, Daijiang Li, Anthony R. Ives, Donald M. Waller Apr 2017

Can Functional Traits Account For Phylogenetic Signal In Community Composition?, Daijiang Li, Anthony R. Ives, Donald M. Waller

Faculty Publications

© 2017 The Authors. New Phytologist © 2017 New Phytologist Trust Phylogenetic and functional trait-based analyses inform our understanding of community composition, yet methods for quantifying the overlap in information derived from functional traits and phylogenies remain underdeveloped. Does adding traits to analyses of community composition reduce the phylogenetic signal in the residual variation? If not, then measured functional traits alone may be insufficient to explain community assembly. We propose a general statistical framework to quantify the proportion of phylogenetic pattern in community composition that remains after including measured functional traits. We then illustrate the framework with applications to two …

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Costs Of Reproduction And Carry-Over Effects In Breeding Albatrosses, Glenn T. Crossin, Richard A. Phillips, Christine R. Lattin, L. Michael Romero, Xavier Bordeleau, Christopher M. Harris, Oliver P. Love, Tony D. Williams Apr 2017

Costs Of Reproduction And Carry-Over Effects In Breeding Albatrosses, Glenn T. Crossin, Richard A. Phillips, Christine R. Lattin, L. Michael Romero, Xavier Bordeleau, Christopher M. Harris, Oliver P. Love, Tony D. Williams

Faculty Publications

© Antarctic Science Ltd 2016. We investigated the physiology of two closely related albatross species relative to their breeding strategy: black-browed albatrosses (Thalassarche melanophris) breed annually, while grey-headed albatrosses (T. chrysostoma) breed biennially. From observations of breeding fate and blood samples collected at the end of breeding in one season and feather corticosterone levels (fCort) sampled at the beginning of the next breeding season, we found that in both species some post-breeding physiological parameters differed according to breeding outcome (successful, failed, deferred). Correlations between post-breeding physiology and fCort, and links to future breeding decisions, were examined. In black-browed albatrosses, post-breeding …

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Global Networks For Invasion Science: Benefits, Challenges And Guidelines, Jasmin G. Packer, Laura A. Meyerson, David M. Richardson, Giuseppe Brundu, Warwick J. Allen, Ganesh P. Bhattarai, Hans Brix, Susan Canavan, Stefano Castiglione, Angela Cicatelli, Jan Čuda, James T. Cronin, Franziska Eller, Francesco Guarino, Wei Hua Guo, Wen Yong Guo, Xiao Guo, José L. Hierro, Carla Lambertini, Jian Liu, Vanessa Lozano, Thomas J. Mozdzer, Hana Skálová, Diego Villarreal, Ren Qing Wang, Petr Pyšek Apr 2017

Global Networks For Invasion Science: Benefits, Challenges And Guidelines, Jasmin G. Packer, Laura A. Meyerson, David M. Richardson, Giuseppe Brundu, Warwick J. Allen, Ganesh P. Bhattarai, Hans Brix, Susan Canavan, Stefano Castiglione, Angela Cicatelli, Jan Čuda, James T. Cronin, Franziska Eller, Francesco Guarino, Wei Hua Guo, Wen Yong Guo, Xiao Guo, José L. Hierro, Carla Lambertini, Jian Liu, Vanessa Lozano, Thomas J. Mozdzer, Hana Skálová, Diego Villarreal, Ren Qing Wang, Petr Pyšek

Faculty Publications

© 2016, Springer International Publishing Switzerland. Much has been done to address the challenges of biological invasions, but fundamental questions (e.g., which species invade? Which habitats are invaded? How can invasions be effectively managed?) still need to be answered before the spread and impact of alien taxa can be effectively managed. Questions on the role of biogeography (e.g., how does biogeography influence ecosystem susceptibility, resistance and resilience against invasion?) have the greatest potential to address this goal by increasing our capacity to understand and accurately predict invasions at local, continental and global scales. This paper proposes a framework for the …

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Fgf21 Mediates The Thermogenic And Insulin-Sensitizing Effects Of Dietary Methionine Restriction But Not Its Effects On Hepatic Lipid Metabolism, Desiree Wanders, Laura A. Forney, Kirsten P. Stone, David H. Burk, Alicia Pierse, Thomas W. Gettys Apr 2017

Fgf21 Mediates The Thermogenic And Insulin-Sensitizing Effects Of Dietary Methionine Restriction But Not Its Effects On Hepatic Lipid Metabolism, Desiree Wanders, Laura A. Forney, Kirsten P. Stone, David H. Burk, Alicia Pierse, Thomas W. Gettys

Faculty Publications

© 2017 by the American Diabetes Association. Dietary methionine restriction (MR) produces a rapid and persistent remodeling of white adipose tissue (WAT), an increase in energy expenditure (EE), and enhancement of insulin sensitivity. Recent work established that hepatic expression of FGF21 is robustly increased by MR. Fgf212/2 mice were used to test whether FGF21 is an essential mediator of the physiological effects of dietary MR. The MR-induced increase in energy intake and EE and activation of thermogenesis in WAT and brown adipose tissue were lost in Fgf212/2 mice. However, dietary MR produced a comparable reduction in body weight and adiposity …

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Efficacy Of Insect Growth Regulators And Diamide Insecticides For Control Of Stem Borers (Lepidoptera: Crambidae) In Sugarcane, B. E. Wilson, M. T. Vanweelden, J. M. Beuzelin, T. E. Reagan, J. A. Prado Apr 2017

Efficacy Of Insect Growth Regulators And Diamide Insecticides For Control Of Stem Borers (Lepidoptera: Crambidae) In Sugarcane, B. E. Wilson, M. T. Vanweelden, J. M. Beuzelin, T. E. Reagan, J. A. Prado

Faculty Publications

Field experiments assessed control of the stem borers, Diatraea saccharalis (F.) and Eoreuma loftini (Dyar), in sugarcane (Saccharum spp.) with selected insect growth regulators and diamide insecticides. Tebufenozide, novaluron, chlorantraniliprole, and flubendiamide were evaluated for D. saccharalis control in four field experiments in Louisiana between 2009 and 2014. Aerial application of the same insecticides was evaluated for control of E. loftini in commercial sugarcane fields in southern Texas in 2012 and 2015. Stalk injury from D. saccharalis in nontreated plots ranged from 7.4-28.1% bored internodes across the four experiments. All insecticides reduced D. saccharalis injury compared with nontreated plots (39.1-99.4% …

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“What About Hal?”: Imagining A Queer Physicality In Stanley Kubrick’S 2001: A Space Odyssey, Camille E.B. Boechler Apr 2017

“What About Hal?”: Imagining A Queer Physicality In Stanley Kubrick’S 2001: A Space Odyssey, Camille E.B. Boechler

Honors Capstones

No abstract provided.

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Material Evaluation Of A Lightweight, Automated Canned Pet Food Dispenser, Lauren Carriere Apr 2017

Material Evaluation Of A Lightweight, Automated Canned Pet Food Dispenser, Lauren Carriere

Honors Capstones

No abstract provided.

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Uncovering Novel Interactions Of The Mec1 Dna Damage Response Protein, Hug1, Ashley Curran Apr 2017

Uncovering Novel Interactions Of The Mec1 Dna Damage Response Protein, Hug1, Ashley Curran

Honors Capstones

No abstract provided.

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“Their Decision, It Didn’T Take Place”: The Forced Sterilization Of Native American Women In The United States, Emily Marie Owen Apr 2017

“Their Decision, It Didn’T Take Place”: The Forced Sterilization Of Native American Women In The United States, Emily Marie Owen

Honors Capstones

No abstract provided.

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The Role Of Human Trbp And Pact In Rnai-Mediated Antiviral Immunity And Exogenous Rnai Pathways In Caenorhabditis Elegans, Victoria Lulich Apr 2017

The Role Of Human Trbp And Pact In Rnai-Mediated Antiviral Immunity And Exogenous Rnai Pathways In Caenorhabditis Elegans, Victoria Lulich

Honors Capstones

No abstract provided.

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Stabilization In A Chemostat With Sampled And Delayed Measurements And Uncertain Growth Functions, Frédéric Mazenc, Jérome Harmand, Michael Malisoff Apr 2017

Stabilization In A Chemostat With Sampled And Delayed Measurements And Uncertain Growth Functions, Frédéric Mazenc, Jérome Harmand, Michael Malisoff

Faculty Publications

We provide a new control design for chemostats, under constant substrate input concentrations, using piecewise constant delayed measurements of the substrate concentration. Our growth functions can be uncertain and are not necessarily monotone. The dilution rate is the control. We use a new Lyapunov approach to derive conditions on the largest sampling interval and on the delay length to ensure asymptotic stabilization properties of a componentwise positive equilibrium point.

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Retention Of Stored Water Enables Tropical Tree Saplings To Survive Extreme Drought Conditions, Brett T. Wolfe Apr 2017

Retention Of Stored Water Enables Tropical Tree Saplings To Survive Extreme Drought Conditions, Brett T. Wolfe

Faculty Publications

Trees generally maintain a small safety margin between the stem water potential (stem) reached during seasonal droughts and the stem associated with their mortality. This pattern may indicate that species face similar mortality risk during extreme droughts. However, if tree species vary in their ability to regulate stem, then safety margins would poorly predict drought mortality. To explore variation among species in stem regulation, I subjected potted saplings of six tropical tree species to extreme drought and compared their responses with well-watered plants and pretreatment reference plants. In the drought treatment, soil water potential reached <-10 MPa, yet three species, Bursera simaruba (L.) Sarg., Cavanillesia platanifolia (Bonpl.) Kunth and Cedrela odorata L. had 100% survival and maintained stem near -1 MPa (i.e., desiccation-avoiding species). Three other species, Cojoba rufescens (Benth.) Britton and Rose, Genipa americana L. and Hymenaea courbaril L. had 50%, 0% and 25% survival, respectively, and survivors had stem <-6 MPa (i.e., desiccation-susceptible species). The desiccation-avoiding species had lower relative water content (RWC) in all organs and tissues (root, stem, bark and xylem) in the drought treatment than in the reference plants (means 72.0-90.4% vs 86.9-97.9%), but the survivors of the desiccation-susceptible C. rufescens had much lower RWC in the drought treatment (44.5-72.1%). Among the reference plants, the desiccation-avoiding species had lower tissue density, leaf-mass fraction and lateral-root surface area (LRA) than the desiccation-susceptible species. Additionally, C. platanifolia and C. odorata had reduced LRA in the drought treatment, which may slow water loss into dry soil. Together, these results suggest that the ability to regulate stem during extreme drought is associated with functional traits that favor retention of stored water and that safety margins during seasonal drought poorly predict survival during extreme drought.

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