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Articles 1 - 30 of 129
Full-Text Articles in Life Sciences
The Development Of A Dual-Tag Affinity Purification System And Its Application To Elucidate The Interacting Protein Network Surrounding The Human Telomere Binding Proteins Trf1, Trf2, And Pot1, Richard John Giannone
The Development Of A Dual-Tag Affinity Purification System And Its Application To Elucidate The Interacting Protein Network Surrounding The Human Telomere Binding Proteins Trf1, Trf2, And Pot1, Richard John Giannone
Doctoral Dissertations
Protein-protein interactions (PPI) play a vital role in almost every cellular process. Although many methodologies exist to probe PPIs, one of the most successful and widely employed is tandem affinity purification coupled with liquid chromatography and tandem mass spectrometry (LC-MS/MS). Although best demonstrated in yeast, TAP has encountered significant hurdles in its application to mammalian systems, especially the observed low yield of bait protein and its interacting partners after two consecutive purifications.
To address these issues, a novel dual-tag affinity purification (DAP) system was developed that not only enhances bait protein recovery, but also allows for rapid evaluation of dual-tag …
Cis-Acting Determinants Of Coronavirus Genome Translation And Replication, Kortney Michele Gustin
Cis-Acting Determinants Of Coronavirus Genome Translation And Replication, Kortney Michele Gustin
Doctoral Dissertations
Coronaviruses are a family of positive-sense, single-stranded, 5’-capped and 3’- polyadenylated RNA viruses that replicate entirely in the cell cytoplasm. Replication of the viral genome requires translation to produce proteins used for RNA synthesis and virion assembly. The 5’- and 3’- untranslated regions of the coronavirus genome have been found to contain cis-acting elements that are required for replication of the genome and a defective interfering RNA. Presumably, both viral and cellular proteins interact with these elements and serve as trans-acting factors in genome translation and replication. Of interest is the functional significance of a 5’-proximal cis-acting 397-nucleotide …
Comparative Functional Genomics Of The Sabath Family Of Methyltransferases In Plants, Nan Zhao
Comparative Functional Genomics Of The Sabath Family Of Methyltransferases In Plants, Nan Zhao
Doctoral Dissertations
Known members of the plant SABATH family of methyltransferases (MTs) have important biological functions by methylating hormones, signaling molecules and other metabolites. This dissertation aims to systematically investigate the biochemical and biological functions and evolution of SABATH genes in plants. The genomes of rice and poplar have been fully sequenced, which provides unprecedented opportunities for cross-species comparison of the SABATH family. Using a comparative genomic approach, 41 and 33 SABATH genes were identified in rice and poplar, respectively. The expression of these genes in different tissue was analyzed using RT-PCR approach and some genes highly expressed in multiple tissues were …
Plant Improvement For Insect Resistance: Testing Of The Candidate Organism Beauveria Bassiana, Transgenic Tobacco Expressing Protease Inhibitors, And Rapid Screen Of Insect Resistance Genes In An Agroinfiltration Transient Expression System, Brian M. Leckie
Doctoral Dissertations
This study focused on three aspects of plant improvement for insect resistance including: testing of candidate organisms for their production of insecticidal proteins, testing of transgenic plants expressing insect resistance genes, and testing novel systems for the evaluation of insect resistance genes. In the initial part of this study, the candidate fungus Beauveria bassiana was tested for its production of insecticidal proteins through a series of insect bioassays containing fungal protein extracts. These extracts were shown to be orally toxic to Plutella xylostella (diamondback moth) and Spodoptera frugiperda (fall armyworm). Assays involving protease treatments significantly decreased mortality indicating the presence …
Evaluation Of Statistical Correlation And Validation Methods For Construction Of Gene Co-Expression Networks, Suman Duvvuru
Evaluation Of Statistical Correlation And Validation Methods For Construction Of Gene Co-Expression Networks, Suman Duvvuru
Doctoral Dissertations
High-throughput technologies such as microarrays have led to the rapid accumulation of large scale genomic data providing opportunities to systematically infer gene function and co-expression networks. Typical steps of co-expression network analysis using microarray data consist of estimation of pair-wise gene co-expression using some similarity measure, construction of co-expression networks, identification of clusters of co-expressed genes and post-cluster analyses such as cluster validation. This dissertation is primarily concerned with development and evaluation of approaches for the first and the last steps – estimation of gene co-expression matrices and validation of network clusters. Since clustering methods are not a focus, only …
Plant Transcriptional Responses To Explosives As Revealed By Arabidopsis Thaliana Microarrays And Its Application In Phytoremediation And Phytosensing, Murali Malavalli Keerthi Narayana Raghavendra Rao
Plant Transcriptional Responses To Explosives As Revealed By Arabidopsis Thaliana Microarrays And Its Application In Phytoremediation And Phytosensing, Murali Malavalli Keerthi Narayana Raghavendra Rao
Doctoral Dissertations
This research focused on understanding genetic responses of plants to explosives, which is necessary to produce plants to detect and clean soil and water contaminated with toxic explosive compounds. The first study used microarray technology to reveal transcriptional changes in the model plant Arabidopsis thaliana exposed to the explosive compounds RDX (hexahydro-1,3,5-trinitro-1,3,5-triazine; Royal Demolition Explosive or Research Department Explosive) and TNT (2,4,6-trinitrotoluene). This study yielded a list of genes up- and downregulated by explosive compounds, which can be potentially used for phytoremediation (remediation using plants) or phytosensing (detection using plants) of explosive compounds. The second study presented biotechnology tools to …
Sp618-2008-2008 Corn Hybrid And Sweet Sorghum Silage Tests In Tennessee, The University Of Tennessee Agricultural Extension Service
Sp618-2008-2008 Corn Hybrid And Sweet Sorghum Silage Tests In Tennessee, The University Of Tennessee Agricultural Extension Service
Field & Commercial Crops
No abstract provided.
Rr09-03-2008 Soybean Variety Performance Tests In Tennessee, The University Of Tennessee Agricultural Extension Service
Rr09-03-2008 Soybean Variety Performance Tests In Tennessee, The University Of Tennessee Agricultural Extension Service
Field & Commercial Crops
No abstract provided.
W209 Cutleaf Evening Primrose (Oenothera Laciniata Hill), The University Of Tennessee Agricultural Extension Service
W209 Cutleaf Evening Primrose (Oenothera Laciniata Hill), The University Of Tennessee Agricultural Extension Service
Field & Commercial Crops
No abstract provided.
The Role Of Cytomegalovirus Viral Chemokines In Neutrophil Activation And Viral Dissemination, Mindy L. Miller-Kittrell
The Role Of Cytomegalovirus Viral Chemokines In Neutrophil Activation And Viral Dissemination, Mindy L. Miller-Kittrell
Doctoral Dissertations
CMV is the leading cause of both non-hereditary mental retardation and hearing loss and CMV infection following transplantation carries a serious risk for complications. The development of a CMV vaccine or better therapeutic treatment is desired but to develop these a more complete understanding of CMV pathogenesis is necessary. Sequence comparisons between attenuated and virulent strains of HCMV map major differences to a 15kb region (ULb’) containing the chemokine homolog, vCXCL-1. The vCXCL-1 protein of the Toledo (Tol) strain was previously shown to function in vitro as a CXC chemokine. Murine CMV (MCMV) also encodes a viral chemokine, MCK2. Prior …
Tissue Culture And Recombinant Dna Technology: Developing Protocols For Potentially Higher Yielding Switchgrass Cultivars, Stephen Michael Foulk
Tissue Culture And Recombinant Dna Technology: Developing Protocols For Potentially Higher Yielding Switchgrass Cultivars, Stephen Michael Foulk
Masters Theses
The purpose of this thesis project was to, firstly, establish and optimize protocols for high-throughput callus induction and plant regeneration for the new, higher yielding switchgrass (Panicum virgatum L.) cultivars NSL and SL93. Secondly, to subclone the complementary DNA (cDNA) of the anthocyanin transcription factor, C1, from pBECKS.red into pUC18 and pBSL15 for downstream use.
For the first part of this project the cultivars, NF/GA992, NF/GA993, NSL, and SL93, were tested for callus induction by plating whole dehusked caryopses on callus induction media (CIM) containing 8.5uM of the auxin dicamba. NF/GA992 responded best to the treatment with 44% of …
Characterization Of The Metallohistin Cdna Agnt84 And Pteris Vittata Tissue Culture For Phytoremediation, Blake Lee Joyce
Characterization Of The Metallohistin Cdna Agnt84 And Pteris Vittata Tissue Culture For Phytoremediation, Blake Lee Joyce
Masters Theses
Contamination of soils with toxic metals such as arsenic and cadmium has become a major environmental and human health risk. Phytoremediation provides a method to remove contaminants from soils that is not only economically viable but also environmentally sound. Metallohistins are proteins that have the capability to bind divalent metal ions such as Ni2+, Zn2+, Co2+, Cu2+ and Cd2+. In this study, a concatemer sequence was designed to try to increase the presence of metal-binding proteins in transgenic plants. Two methods to increase translational efficiency of the metallohistin protein were used: …
Impacts Of A 4-Lane Highway On The Spatial Ecology Of American Black Bears And The Effectiveness Of Wildlife Underpasses In Eastern North Carolina, Matthew Flanders Mccollister
Impacts Of A 4-Lane Highway On The Spatial Ecology Of American Black Bears And The Effectiveness Of Wildlife Underpasses In Eastern North Carolina, Matthew Flanders Mccollister
Masters Theses
From 2001 through 2005, the North Carolina Department of Transportation rerouted and upgraded a section of U.S. Highway 64 in Washington County to a 4-lane divided highway. This new roadway included 3 wildlife underpasses with adjacent wildlife fencing to mitigate the effects of the highway on wildlife, in particular American black bears (Ursus americanus). From 2000 to 2001, the University of Tennessee conducted research on the spatial ecology and population demographics of the black bear population at the new highway site and on a nearby control area of similar habitat composition. From 2006 to 2007, after highway construction, …
Effect Of First, Second And Third Chromosome On The Promoter Activity Of Cyp6a8 Gene Of Drosophila Melanogaster, Anirban Mukherjee
Effect Of First, Second And Third Chromosome On The Promoter Activity Of Cyp6a8 Gene Of Drosophila Melanogaster, Anirban Mukherjee
Masters Theses
The mechanism of insect CYP gene regulation is largely unknown. In the present investigation, I used Drosophila as a model insect to understand the role of X, 2nd and 3rd chromosomes on the promoter activity of Cyp6a8 gene. Two reporter transgenic strains, 0.8luc110 H-ry and 0.8luc14, carrying 0.8luc-A8 reporter transgene (chimera of 0.8-kb upstream DNA of Cyp6a8 and the firefly luciferase gene) on the 2nd and 3rd chromosomes of ry506, respectively were used. The X, 2nd and 3rd chromosomes of these two transgenic lines were replaced with corresponding chromosomes from DDT-resistant 91-R …
The Status Of Table Mountain Pine (Pinus Pungens) Stands On The Cherokee National Forest, Tennessee, Amy Louise Morgan
The Status Of Table Mountain Pine (Pinus Pungens) Stands On The Cherokee National Forest, Tennessee, Amy Louise Morgan
Masters Theses
Table Mountain pine (Pinus pungens Lamb.)(TMP) is a threatened species, endemic to the southern Appalachian Mountains. The status of TMP following the southern pine beetle (Dendroctonus frontalis Zimmerman) outbreak of 1999–2001 is unknown. This study focuses on stands of the Cherokee National Forest (CNF) in eastern Tennessee that had a TMP component in the 1994 Continuous Inventory of Stand Condition (CISC) data. This project has two parts: an inventory of the 1994 stands as well as a case study of cost comparison of release treatments for a young overstocked stand. The objective of the inventory was to visit …
Investigating The Oligomerization Of Vitronectin, Yacynth Ruwansara
Investigating The Oligomerization Of Vitronectin, Yacynth Ruwansara
Masters Theses
Vitronectin is a multi-functional glycoprotein that is present in the plasma and extra-cellular matrix of eukaryotes. It is capable of binding a wide variety of structurally different ligands, including plasminogen activators, plasminogen activator-inhibitors, proteases, cell surface receptors and components of the extra-cellular matrix. Vitronectin exists in two conformations – as a monomer in circulation, and as a multimer in the extracellular matrix. The pathway by which vitronectin undergoes the transition from monomer to multimer is not well characterized, but this laboratory has put forward evidence to suggest that the binding of vitronectin with plasminogen activator inhibitor type-1 (PAI-1), facilitates higher …
Evolution Of The Set Of Signal Transduction Proteins In 10 Species Of Shewanella, Harold Arthur Shanafield
Evolution Of The Set Of Signal Transduction Proteins In 10 Species Of Shewanella, Harold Arthur Shanafield
Masters Theses
The recent completion of the sequencing of several species of the Shewanella genus provides a unique opportunity for comparative genomics studies. We chose the first 10 fully sequenced Shewanella genomes to investigate the evolution of signal transduction proteins (ST). ST is a universal and highly regulated system, and as a very well-studied system provides an excellent starting point for investigation. Furthermore, Shewanella have been shown to have a large number of two-component systems and diguanylate cyclases relative to their genome size. In this study we investigate the evolution of signal transduction across several Shewanella strains by utilizing a domainlevel approach …
“Intervention Strategies To Enhance The Safety Of Ready-To-Eat Meat Products By Plant Essential Oils, Chayapa Techathuvanan
“Intervention Strategies To Enhance The Safety Of Ready-To-Eat Meat Products By Plant Essential Oils, Chayapa Techathuvanan
Masters Theses
Components of plant essential oil (PEO) extracts are known to have antimicrobial properties. However, their antimicrobial efficacy in food systems is low due to their hydrophobic nature and association with other food components. Incorporation of PEO components into an appropriate carrier may offer a potential solution to improve their activity in food systems. This study was conducted to determine the effect of PEO components (thymol, eugenol, linalool, carvacrol, and cinnamaldehyde) incorporated into zein coating on inactivation of Listeria monocytogenes on a ready-to-eat meat model, frankfurters (hot dogs). Hot dogs were inoculated with 7 log CFU/sample and dipped into prepared PEO-zein …
Novel Method For Recovery Of Escherichia Coli O157:H7 From Beef Surfaces, Matthew Adam Becher
Novel Method For Recovery Of Escherichia Coli O157:H7 From Beef Surfaces, Matthew Adam Becher
Masters Theses
A study was conducted to compare the efficiency of detection of Escherichia coli O157:H7 EDL 933 on external beef trim by commercial recovery systems based upon of the Microbial-Vac System (M-Vac) and excision sampling. Escherichia coli O157:H7 EDL 933 was cultured in tryptic soy broth for 24 hr at 37°C and transferred for three consecutive days before diluting and spot inoculating onto a 684 cm2 piece of beef trim (10 CFU/684 cm2). Beef trim was sampled with the M-Vac by passing the sampling head over the entire surface area in a vertical sampling pattern. The sampling head …
Buyer And Grower Perceptions Of Liner Quality And Associated Production Costs Of Nursery Liner Stock, Andrew H. Jeffers
Buyer And Grower Perceptions Of Liner Quality And Associated Production Costs Of Nursery Liner Stock, Andrew H. Jeffers
Masters Theses
Liner production is a key segment in the nursery industry. Due to a lack of specific of quality standards by governing industry organizations as well as a lack of general consensus among growers of perceived liner quality, a conjoint analysis study was developed to determine buyer and grower preferences for nursery liner product features during point-of-purchase decisions. The study used a visual survey using six variables (first order lateral roots (FOLR), price, region of production, and height, canopy density and caliper uniformity) with varying levels yielding a 3 x 3 x 3 x 2 x 2 x 2 factorial design. …
Characterization Of Vitronectin And Plasminogen Activator Inhibitor Type 1: Insights Into Metal Binding, And Production Of Reagents To Facilitate Structural Studies, Cynthia Lee Brown
Characterization Of Vitronectin And Plasminogen Activator Inhibitor Type 1: Insights Into Metal Binding, And Production Of Reagents To Facilitate Structural Studies, Cynthia Lee Brown
Masters Theses
Vitronectin is a multifunctional glycoprotein involved in regulation of such processes as hemostasis, cell migration, immunity, and tumor metastasis. Many of its functions require interaction with various binding partners. One such partner, plasminogen activator inhibitor-type 1 (PAI-1), belongs to the serine protease inhibitor (serpin) superfamily of proteins. PAI-1 helps regulate hemostasis by affecting blood clot breakdown, and helps regulate cell migration and tissue remodeling by affecting extracellular matrix digestion. Our laboratory is pursuing structural information on vitronectin and the complex formed between vitronectin and PAI-1. To this end, the work presented in this thesis focuses on two aims: characterizing the …
Roles, Perceptions, And Control Of Infant Feeding Among Low-Income Fathers In East Tennessee, Kristen Erika Anderson
Roles, Perceptions, And Control Of Infant Feeding Among Low-Income Fathers In East Tennessee, Kristen Erika Anderson
Masters Theses
INTRODUCTION: Introduction of solid foods before the recommended age of 4-6 months is a common practice in the United States, and appears to be especially prevalent among infants who are enrolled in the Special Supplemental Nutrition Program for Women, Infants, and Children (WIC). Currently, little is known about how fathers influence early infant feeding decisions, outside of the decision to breast- or formulafeed. The purpose of this study was to explore how fathers perceive the role they play in feeding and caring for their infants. METHODS: Participants were 21 male-caregivers, who were fathers or partners of the mothers …
The Effects Of Lactation And Negative Energy Balance On Kisspeptin-Stimulated Luteinizing Hormone And Growth Hormone In Dairy Cows, Brian K. Whitlock, Joseph A. Daniel, Robyn R. Wilborn, Herris S. Maxwell, Barbara P. Steele, James L. Sartin
The Effects Of Lactation And Negative Energy Balance On Kisspeptin-Stimulated Luteinizing Hormone And Growth Hormone In Dairy Cows, Brian K. Whitlock, Joseph A. Daniel, Robyn R. Wilborn, Herris S. Maxwell, Barbara P. Steele, James L. Sartin
Animal Science Publications and Other Works
Kisspeptin, a neuroendocrine regulator of gonadotropin releasing hormone, is hypothesized to integrate nutrition and hormones critical to metabolism and the regulation of reproduction. Since the negative energy balance of early lactation is associated with reduced fertility via suppression of gonadotropin secretion and enhanced growth hormone (GH) responsiveness, this experiment was designed to determine the effects of stage of lactation and negative energy balance on kisspeptin-10 (Kp-10) stimulated luteinizing hormone (LH) and GH concentrations. Five nonlactating [5.1 ± 0.8 (SEM) years; 577 ± 19 kg body weight (BW)] and five lactating [4.1 ± 0.6 years; 608 ± 11 kg BW] multiparous …
Pb1679 Forest - A - Syst: Self-Assessment To Prioritize Your Forest Uses, The University Of Tennessee Agricultural Extension Service
Pb1679 Forest - A - Syst: Self-Assessment To Prioritize Your Forest Uses, The University Of Tennessee Agricultural Extension Service
Forestry, Trees, and Timber
You are unique. The title “Forest Landowner” is one not held by many Tennesseans. Your ownership carries with it a sense of treasure, of enjoyment, of wildness. But it’s also a privilege, one that imparts responsibility, one that can be observed and one that increasingly can be measured.
If you were to be judged on your forestry practices, how would you score? Would you even know which parameters to assess or what questions to ask? Which of these forest uses aesthetics, recreation, soil, timber, water, wildlife—are more important? Have you ever intelligently, and intentionally, began a planning process for your …
Third Thursday 11-2008, Institute Of Agriculture
Effects Of Dairy Intake On Weight Maintenance, Michael B. Zemel, Joseph E. Donnelly, Bryan K. Smith, Debra K. Sullivan, Joanna Richards, Danielle Morgan-Hanusa, Matthew S. Mayo, Xiaocun Sun, Galen Cook-Wiens, Bruce W. Bailey, Emily L. Van Walleghen, Richard A. Washburn
Effects Of Dairy Intake On Weight Maintenance, Michael B. Zemel, Joseph E. Donnelly, Bryan K. Smith, Debra K. Sullivan, Joanna Richards, Danielle Morgan-Hanusa, Matthew S. Mayo, Xiaocun Sun, Galen Cook-Wiens, Bruce W. Bailey, Emily L. Van Walleghen, Richard A. Washburn
Nutrition Publications and Other Works
Background
To compare the effects of low versus recommended levels of dairy intake on weight maintenance and body composition subsequent to weight loss.
Design and Methods
Two site (University of Kansas-KU; University of Tennessee-UT), 9 month, randomized trial. Weight loss was baseline to 3 months, weight maintenance was 4 to 9 months. Participants were maintained randomly assigned to low dairy (< 1 dairy serving/d) or recommended dairy (> 3 servings/d) diets for the maintenance phase. Three hundred thirty eight men and women, age: 40.3 ± 7.0 years and BMI: 34.5 ± 3.1, were randomized; Change in weight and body composition (total fat, trunk fat) from 4 to …
Regional Reports, Southeastern Fishes Council
Regional Reports, Southeastern Fishes Council
Southeastern Fishes Council Proceedings
No abstract provided.
1 Plant Sciences Newsletter Fall 2008, Department Of Plant Sciences
1 Plant Sciences Newsletter Fall 2008, Department Of Plant Sciences
Plant Sciences Newsletter
No abstract provided.
Third Thursday 10-2008, Institute Of Agriculture
Number 50 (October 2008), Southern Fishes Council
Number 50 (October 2008), Southern Fishes Council
Southeastern Fishes Council Proceedings
(October 2008) - Use of Visible Implant Fluorescent Elastomer (VIE) Tag Technique on Darters (Teleostei: Percidae): Mortality and Tag Retention. By Joyce A. Coombs and J. Larry Wilson
Diversity and Distribution of Native Freshwater Mussels in Bayou Bartholomew, Arkansas. By Jeff A. Brooks, Russell L. Minton, Steven G. George, David M. Hayes, Ronnie Ulmer, and Frank Pezold
A Note on Three Collections of Cyprinodontid Fishes Housed in the British Museum of Natural History, Including Syntypes and Historically Important Specimens. By Royal D. Suttkus and James D. Williams
Minutes, Business Meeting, 33rd Annual Meeting, Southeastern Fishes Council
Regional Southeastern Fishes Council …