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Articles 1 - 30 of 1773
Full-Text Articles in Life Sciences
Johne’S Disease In A Pygmy Doe: A Diagnostic Dilemma, Madison Callicott, Kaitlyn Upton, Joseph Smith, Camille Cordero Aponte
Johne’S Disease In A Pygmy Doe: A Diagnostic Dilemma, Madison Callicott, Kaitlyn Upton, Joseph Smith, Camille Cordero Aponte
Faculty Publications and Other Works -- Large Animal Clinical Sciences
No abstract provided.
Winter Wheat Cover Crop Increased Subsoil Organic Carbon In A Long-Term Cotton Cropping System In Tennessee, Rounak Patra, Debasish Saha, Sindhu Jagdamma
Winter Wheat Cover Crop Increased Subsoil Organic Carbon In A Long-Term Cotton Cropping System In Tennessee, Rounak Patra, Debasish Saha, Sindhu Jagdamma
Biosystems Engineering and Soil Science Publications and Other Works
Long-term cover-cropping and no-tillage practices can facilitate soil organic carbon (SOC) accumulation in agroecosystems for soil health and climate mitigation benefits. However, the contribution of these conservation management practices to SOC gain from the subsoil layers is not been extensively studied. To understand this knowledge gap, it is essential to determine the distribution of total SOC and SOC fractions in response to management practices across the soil profile. Therefore, this study was conducted by leveraging a 40-year replicated field experiment in a continuous cotton (Gossypium hirsutum) system. The management treatments examined included three cover crop treatments: 1) hairy vetch, HV …
Unraveling The Molecular Foundations Behind The Diverged Behaviors Of Mouse Insulin 1 And Insulin 2, Connecting Diabetes Risk With Glucocorticoid Treatment And Chronic Migraine Through The Analysis Of Islet Chemistry, And Capturing Key Posttranslational Modifications All Through The Application Of A Novel Lc-Ims-Ms Workflow, Connor Christopher Long
Select or Award-Winning Individual Scholarship
We display the capabilities of our established liquid chromatography-ion mobility spectrometry-mass spectrometry (LC-IMS-MS) workflow in the investigations of islet chemistry at the sub-single-islet level. We begin by characterizing the structural differences of Ins1 and Ins2 to present novel insights as to why their behaviors diverge. We then examine the effects of the stress hormone corticosterone, the rodent equivalent of human cortisol that is often used as a therapeutic, on pancreatic peptide hormone secretion. We also uncover the molecular connection behind the inverse relationship between type 2 diabetes (T2D) risk and chronic migraine via the neuropeptides CGRP and PACAP. Lastly, we …
Buprenorphine Effects On Anxiety-Like Behavior In B6 Mice, Megan K. Thibert
Buprenorphine Effects On Anxiety-Like Behavior In B6 Mice, Megan K. Thibert
Select or Award-Winning Individual Scholarship
Buprenorphine, a semi-synthetic opioid prescribed for the treatment of opioid use disorder (OUD), has been suggested as a potential pharmacological treatment for anxiety. Some preclinical and clinical studies provide support for the anxiolytic effects of buprenorphine, but research in this area is scarce, and findings to date have been mixed. The present study was designed to test the hypothesis that buprenorphine alters anxiety-like behavior in C57BL/IJ (B6) mice measured using the elevated zero maze (EZM). Adult, male mice (n=10) were given subcutaneous injections of saline (control) and three doses of buprenorphine (0.3, 1, and 10 mg/kg). One hour following injection, …
Volume 17, Number 1 (Spring/Summer 2021), Ut Institute Of Agriculture
Volume 17, Number 1 (Spring/Summer 2021), Ut Institute Of Agriculture
Tennessee Land, Life and Science Magazine
Issue Highlights:
- The four pillars of the Institute of Agriculture
- Alumna forges partnership amid Waldo Canyon fire
- Fishery biologists revive a river
A Tissue Specific Transcriptomic, Proteomic And Phospho-Proteomic Atlas Of The Translational Machinery Of Arabidopsis Thaliana, Abdullah Salim
A Tissue Specific Transcriptomic, Proteomic And Phospho-Proteomic Atlas Of The Translational Machinery Of Arabidopsis Thaliana, Abdullah Salim
EURēCA: Exhibition of Undergraduate Research and Creative Achievement
Gene expression encompasses the flow of genetic information from DNA to mRNA (transcription) and from mRNA to protein (translation) along with the regulatory mechanisms underlying these processes. Omics technologies offer a powerful toolset with which to study gene expression at each of these stages. A recently published dataset integrating transcriptomic, proteomic and phospho-proteomic measurements from 30 Arabidopsis thaliana tissues provides a unique resource to explore gene expression.1 The translational machinery (the ribosome, and its initiation, elongation, and termination factors) are a core component in gene expression. Defects in translation can be lethal or lead to major developmental defects and …
Volume 16, Number 1 (Spring/Summer 2020), Ut Institute Of Agriculture
Volume 16, Number 1 (Spring/Summer 2020), Ut Institute Of Agriculture
Tennessee Land, Life and Science Magazine
Issue Highlights:
- The four pillars of the Institute of Agriculture
- Alumna forges partnership amid Waldo Canyon fire
- Fishery biologists revive a river
Unsustainable: A Planet In Crisis, Sam Yates
Unsustainable: A Planet In Crisis, Sam Yates
Ewing Gallery of Art & Architecture
Unsustainable: A Planet in Crisis features artwork ranging in material, discipline, and execution that addresses the theme of planetary crises – climate change, the rise of disease and superbugs, world conflict and national instability, plastics in the ocean, gun violence, pollution of the waterways from mining, air pollution from use of fossil fuels, the opioid crisis, and species extinction.
Participating artists are: Michele Banks, Brandon Ballengee, PhD, Scott Chimileski, PhD + Roberto Kolter, PhD, Brandon Donahue, Lorrie Fredette, Yeon Jin Kim Pam Longobardi, Dan Mills, John Sabraw, and Karen Shaw.
Labor Use And Labor Challenges Faced By Small Fruit And Vegetable Farms: The Case Of Tennessee, Justin L. Cross
Labor Use And Labor Challenges Faced By Small Fruit And Vegetable Farms: The Case Of Tennessee, Justin L. Cross
Haslam Scholars Projects
United States (U.S.) fruit and vegetable farms depend heavily on labor for the production of the crops they grow and sell. In recent years, it has become increasingly difficult for farms to obtain the labor they need to produce their crops. Therefore, labor management strategies have become critical in determining the profitability and long-term sustainability of farms specializing in the production of fruits and vegetables. These strategies are even more significant for smaller farms that face resource constraints that inhibit their use of alternative labor sources (e.g., migrant workers) or their ability to reduce their reliance on labor through mechanization. …
Volume 16, Number 2 (Fall/Winter 2020), Ut Institute Of Agriculture
Volume 16, Number 2 (Fall/Winter 2020), Ut Institute Of Agriculture
Tennessee Land, Life and Science Magazine
Issue Highlights:
- The four pillars of the Institute of Agriculture
- Alumna forges partnership amid Waldo Canyon fire
- Fishery biologists revive a river
Volume 15, Number 1 (Spring/Summer 2019), Ut Institute Of Agriculture
Volume 15, Number 1 (Spring/Summer 2019), Ut Institute Of Agriculture
Tennessee Land, Life and Science Magazine
Issue Highlights:
- The four pillars of the Institute of Agriculture
- Alumna forges partnership amid Waldo Canyon fire
- Fishery biologists revive a river
Applications Of Optimization Modeling In Multi-Disciplinary Engineering Research, Anton F. Astner, Ekramul Haque Ehite, Yang Li, Colin Sasthav
Applications Of Optimization Modeling In Multi-Disciplinary Engineering Research, Anton F. Astner, Ekramul Haque Ehite, Yang Li, Colin Sasthav
Biosystems Engineering and Soil Science Publications and Other Works
Optimization modeling is the process of selection of the best solution to a design problem using predetermined constraints from a set of prospective solutions. Increased computing power has made optimization solvers readily available for business/research needs. For example, Microsoft Excel has a simple, but robust solver. Such solvers can model linear, nonlinear, and integer programming problems that are limited in size. This study shows the use of the optimization model solvers in various research contexts.
Volume 15, Number 2 (Fall/Winter 2019), Ut Institute Of Agriculture
Volume 15, Number 2 (Fall/Winter 2019), Ut Institute Of Agriculture
Tennessee Land, Life and Science Magazine
Issue Highlights:
- The four pillars of the Institute of Agriculture
- Alumna forges partnership amid Waldo Canyon fire
- Fishery biologists revive a river
Volume 14, Number 1 (Spring/Summer 2018), Ut Institute Of Agriculture
Volume 14, Number 1 (Spring/Summer 2018), Ut Institute Of Agriculture
Tennessee Land, Life and Science Magazine
Issue Highlights:
- The four pillars of the Institute of Agriculture
- Alumna forges partnership amid Waldo Canyon fire
- Fishery biologists revive a river
Iteratively Improving Hi-C Experiments One Step At A Time, Rosela Golloshi, Jacob T. Sanders, Rachel Patton Mccord
Iteratively Improving Hi-C Experiments One Step At A Time, Rosela Golloshi, Jacob T. Sanders, Rachel Patton Mccord
Faculty Publications and Other Works -- Biochemistry, Cellular and Molecular Biology
The 3D organization of eukaryotic chromosomes affects key processes such as gene expression, DNA replication, cell division, and response to DNA damage. The genome-wide chromosome conformation capture (Hi-C) approach can characterize the landscape of 3D genome organization by measuring interaction frequencies between all genomic regions. Hi-C protocol improvements and rapid advances in DNA sequencing power have made Hi-C useful to study diverse biological systems, not only to elucidate the role of 3D genome structure in proper cellular function, but also to characterize genomic rearrangements, assemble new genomes, and consider chromatin interactions as potential biomarkers for diseases. Yet, the Hi-C protocol …
Tetratrichomonas And Trichomonas Spp.-Associated Disease In Free-Ranging Common Eiders (Somateria Mollissima) From Wellfleet Bay, Ma And Description Of Its1 Region Genotypes, Caroline M. Grunenwald, Inga Sidor, Randal Mickley, Chris Dwyer, Richard W. Gerhold Jr.
Tetratrichomonas And Trichomonas Spp.-Associated Disease In Free-Ranging Common Eiders (Somateria Mollissima) From Wellfleet Bay, Ma And Description Of Its1 Region Genotypes, Caroline M. Grunenwald, Inga Sidor, Randal Mickley, Chris Dwyer, Richard W. Gerhold Jr.
Faculty Publications and Other Works -- Biomedical and Diagnostic Sciences
During an outbreak of Wellfleet Bay virus (WFBV) in common eiders (Somateria mollissima) from the Cape Cod region of Massachusetts, several birds were diagnosed with trichomonosis consisting of multiple trichomonad species. Six birds were examined, with trichomonads found in ceca in four birds and associated typhlitis in three of these four birds. PCR and DNA sequencing utilizing trichomonad-specific primers targeting the ITS1 region of the ribosomal DNA (rDNA) revealed the presence of Tetratrichomonas gallinarum in the gastrointestinal tracts of five birds and Trichomonas spp. in the livers of two birds, one of which had a dual Te. gallinarum-Trichomonas …
Volume 14, Number 2 (Fall/Winter 2018), Ut Institute Of Agriculture
Volume 14, Number 2 (Fall/Winter 2018), Ut Institute Of Agriculture
Tennessee Land, Life and Science Magazine
Issue Highlights:
- The four pillars of the Institute of Agriculture
- Alumna forges partnership amid Waldo Canyon fire
- Fishery biologists revive a river
Hybrid Recombineering: Crispr/Cas9 Mutagenesis Of Murine Cytomegalovirus Bac, Cody Sain
Hybrid Recombineering: Crispr/Cas9 Mutagenesis Of Murine Cytomegalovirus Bac, Cody Sain
Haslam Scholars Projects
Human cytomegalovirus (HCMV) is a ubiquitous herpesvirus that can asymptomatically infect immunocompetent hosts with little-to-no impact. Conversely, HCMV can trigger life-threatening disease in immunocompromised hosts such as neonates, organ transplant recipients, and people living with AIDS. HCMV is a unique pathogen in that it can hijack the immune system for its benefit and disseminates throughout the body using host immune cells. Previous studies suggest that innate immune cells are responsible for viral dissemination. However, adequate methods for investigating the spread of CMV within a murine model remain incomplete. We implicate the innate immune cell the neutrophil as a major cell …
Social Status Modulates Restraint- Induced Neural Activity In Brain Regions Controlling Stress Vulnerability , Sahba Seddighi, Matthew A. Cooper
Social Status Modulates Restraint- Induced Neural Activity In Brain Regions Controlling Stress Vulnerability , Sahba Seddighi, Matthew A. Cooper
Haslam Scholars Projects
Understanding the cellular mechanisms that control resistance and vulnerability to stress is an important step toward identifying novel targets for the prevention and treatment of stress-related mental illness. Dominant and subordinate animals have been shown to exhibit different behavioral and physiological responses to stress, with dominants often showing stress resistance and subordinates often showing stress vulnerability. We have previously found that dominant hamsters exhibit reduced social avoidance following social defeat stress compared to subordinate hamsters, although the extent to which stress resistance in dominants generalizes to non-social stressors is unknown. In this study, dominant, subordinate, and control male Syrian hamsters …
Volume 13, Number 1 (Spring/Summer 2017), Ut Institute Of Agriculture
Volume 13, Number 1 (Spring/Summer 2017), Ut Institute Of Agriculture
Tennessee Land, Life and Science Magazine
Issue Highlights:
- The four pillars of the Institute of Agriculture
- Alumna forges partnership amid Waldo Canyon fire
- Fishery biologists revive a river
Hypericum Irazuense Kuntze Ex N. Robson In The Buenavista And Chirripó Páramos Of Costa Rica: Photographs Of Stem Cross Sections, Plants, And Study Sites, Sally P Horn, Matthew T. Kerr
Hypericum Irazuense Kuntze Ex N. Robson In The Buenavista And Chirripó Páramos Of Costa Rica: Photographs Of Stem Cross Sections, Plants, And Study Sites, Sally P Horn, Matthew T. Kerr
Geography Publications and Other Works
Hypericum irazuense Kuntze ex N. Robson is a common shrub in the high-elevation páramos that occur above treeline on the high peaks of the Cordillera de Talamanca in Costa Rica and westernmost Panama. In this report and accompanying high-resolution images we make available photographs of stem cross sections, plants, and habitats of H. irazuense in support of a recent study of the dendrochronological potential of the species (Kerr et al., forthcoming paper in Physical Geography) and other research on this plant and the páramo vegetation in which it occurs. We also include images from the Google EarthTM map …
Characterizing Tmx And Chemotactic Receptor Arrays Through Bacterial Two-Hybrid And Beta-Galactosidase Assays, Adam Keith Hubler
Characterizing Tmx And Chemotactic Receptor Arrays Through Bacterial Two-Hybrid And Beta-Galactosidase Assays, Adam Keith Hubler
Faculty Publications and Other Works -- Biochemistry, Cellular and Molecular Biology
No abstract provided.
Determination Of Meloxicam In Egg Whites And Yolks Using Reverse Phase Chromatography, Sherry Cox, Marcy Souza, Joan Bailey, Molly White, Krissten Gordon
Determination Of Meloxicam In Egg Whites And Yolks Using Reverse Phase Chromatography, Sherry Cox, Marcy Souza, Joan Bailey, Molly White, Krissten Gordon
Faculty Publications and Other Works -- Biomedical and Diagnostic Sciences
A new method of analysis has been developed and validated for the determination of meloxicam in egg whites and yolks. Following a liquid extraction for the whites and a solid phase extraction for the yolks, samples were separated on an XBridge C18 column and quantified using UV detection at 360 nm. The mobile phase was a mixture of water with glacial acetic acid and acetonitrile, with a flow rate of 1 mL/min. The procedure produced a linear curve over the concentration range 5 – 1500 ng/mL with a lower limit of quantification of 5 ng/mL. Intra- and inter-assay variability …
Volume 13, Number 2 (Fall/Winter 2017), Ut Institute Of Agriculture
Volume 13, Number 2 (Fall/Winter 2017), Ut Institute Of Agriculture
Tennessee Land, Life and Science Magazine
Issue Highlights:
- The four pillars of the Institute of Agriculture
- Alumna forges partnership amid Waldo Canyon fire
- Fishery biologists revive a river
Fire History Of The Appalachian Region: A Review And Synthesis, Charles W. Lafon, Adam T. Naito, Henri D. Grissino-Mayer, Sally P Horn, Thomas A. Waldrop
Fire History Of The Appalachian Region: A Review And Synthesis, Charles W. Lafon, Adam T. Naito, Henri D. Grissino-Mayer, Sally P Horn, Thomas A. Waldrop
Geography Publications and Other Works
The importance of fire in shaping Appalachian vegetation has become increasingly apparent over the last 25 years. This period has seen declines in oak (Quercus) and pine (Pinus) forests and other fire-dependent ecosystems, which in the near-exclusion of fire are being replaced by fire-sensitive mesophytic vegetation. These vegetation changes imply that Appalachian vegetation had developed under a history of burning before the fire-exclusion era, a possibility that has motivated investigations of Appalachian fire history using proxy evidence. Here we synthesize those investigations to obtain an up-to-date portrayal of Appalachian fire history. We organize the report by …
Vegetation Response To Canopy Disturbance And Season Of Burn During Oak Woodland And Savanna Restoration In Tennessee, Andrew Lee Vander Yacht, Seth A. Barrioz, Patrick D. Keyser, Craig A. Harper, David Buckley, David A. Buehler, Roger D. Applegate
Vegetation Response To Canopy Disturbance And Season Of Burn During Oak Woodland And Savanna Restoration In Tennessee, Andrew Lee Vander Yacht, Seth A. Barrioz, Patrick D. Keyser, Craig A. Harper, David Buckley, David A. Buehler, Roger D. Applegate
UT Extension publication
The removal of fire’s influence on plant community succession has resulted in the near disappearance of oak woodlands and savannas from the Appalachian region. Negative trends in associated plant and wildlife species could be reversed if these communities are restored, but management has been limited by inadequate canopy disturbance, resprouting of woody plants, and a lack of empirical research. To address these issues, we evaluated herbaceous and woody vegetation response on the
Cumberland Plateau in Tennessee to 5 replicated treatments involving canopy reduction and fire-season combinations and unmanaged controls. All categories of woody vegetation except large saplings density, but resprouting …
Evolution Of Long Centromeres In Fire Ants, Yu-Ching Huang, Chih-Chi Lee, Chia-Yi Kao, Ni-Chen Chang, Chung-Chi Lin, Dewayne Shoemaker, John Wang
Evolution Of Long Centromeres In Fire Ants, Yu-Ching Huang, Chih-Chi Lee, Chia-Yi Kao, Ni-Chen Chang, Chung-Chi Lin, Dewayne Shoemaker, John Wang
Entomology & Plant Pathology Publications and Other Works
Background: Centromeres are essential for accurate chromosome segregation, yet sequence conservation is low even among closely related species. Centromere drive predicts rapid turnover because some centromeric sequences may compete better than others during female meiosis. In addition to sequence composition, longer centromeres may have a transmission advantage.
Results: We report the first observations of extremely long centromeres, covering on average 34 % of the chromosomes, in the red imported fire ant Solenopsis invicta. By comparison, cytological examination of Solenopsis geminata revealed typical small centromeric constrictions. Bioinformatics and molecular analyses identified CenSol, the major centromeric satellite DNA repeat. We found that …
Convergence To Consensus In Heterogeneous Groups And The Emergence Of Informal Leadership, Sergey Gavrilets, Jeremy David Auerbach, Mark Van Vugt
Convergence To Consensus In Heterogeneous Groups And The Emergence Of Informal Leadership, Sergey Gavrilets, Jeremy David Auerbach, Mark Van Vugt
Faculty Publications and Other Works -- Ecology and Evolutionary Biology
When group cohesion is essential, groups must have efficient strategies in place for consensus decisionmaking. Recent theoretical work suggests that shared decision-making is often the most efficient way for dealing with both information uncertainty and individual variation in preferences. However, some animal and most human groups make collective decisions through particular individuals, leaders, that have a disproportionate influence on group decision-making. To address this discrepancy between theory and data, we study a simple, but general, model that explicitly focuses on the dynamics of consensus building in groups composed by individuals who are heterogeneous in preferences, certain personality traits (agreeability and …
Volume 12, Number 1 (Spring/Summer 2016), Ut Institute Of Agriculture
Volume 12, Number 1 (Spring/Summer 2016), Ut Institute Of Agriculture
Tennessee Land, Life and Science Magazine
Issue Highlights:
- The four pillars of the Institute of Agriculture
- Alumna forges partnership amid Waldo Canyon fire
- Fishery biologists revive a river
Quantifying Limits On Replication, Death, And Quiescence Of Mycobacterium Tuberculosis In Mice, Margaret M. Mcdaniel, Nitin Krishna, Winode G. Handagama, Shigetoshi Eda, Vitaly V. Ganusov
Quantifying Limits On Replication, Death, And Quiescence Of Mycobacterium Tuberculosis In Mice, Margaret M. Mcdaniel, Nitin Krishna, Winode G. Handagama, Shigetoshi Eda, Vitaly V. Ganusov
Microbiology Publications and Other Works
When an individual is exposed to Mycobacterium tuberculosis (Mtb) three outcomes are possible: bacterial clearance, active disease, or latent infection. It is generally believed that most individuals exposed to Mtb become latently infected and carry the mycobacteria for life. How Mtb is maintained during this latent infection remains largely unknown. During an Mtb infection in mice, there is a phase of rapid increase in bacterial numbers in the murine lungs within the first 3 weeks, and then bacterial numbers either stabilize or increase slowly over the period of many months. It has been debated whether the relatively constant numbers of …