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Detecting Parasite Associations Within Multi-Species Host And Parasite Communities, Tad A. Dallas, Anna Liisa Laine, Otso Ovaskainen Oct 2019

Detecting Parasite Associations Within Multi-Species Host And Parasite Communities, Tad A. Dallas, Anna Liisa Laine, Otso Ovaskainen

Faculty Publications

© 2019 The Author(s) Published by the Royal Society. All rights reserved. Understanding the role of biotic interactions in shaping natural communities is a long-standing challenge in ecology. It is particularly pertinent to parasite communities sharing the same host communities and individuals, as the interactions among parasites—both competition and facilitation—may have far-reaching implications for parasite transmission and evolution. Aggregated parasite burdens may suggest that infected host individuals are either more prone to infection, or that infection by a parasite species facilitates another, leading to a positive parasite–parasite interaction. However, parasite species may also compete for host resources, leading to the …

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Characterizing Cdk8/19 Inhibitors Through A Nfκb-Dependent Cell-Based Assay, Jng Li, Donald C. Porter, Eugenia Broude, Igor Roninson, Mengqian Chen Oct 2019

Characterizing Cdk8/19 Inhibitors Through A Nfκb-Dependent Cell-Based Assay, Jng Li, Donald C. Porter, Eugenia Broude, Igor Roninson, Mengqian Chen

Faculty Publications

Cell-based assays for CDK8/19 inhibition are not easily defined, since there are no known cellular functions unique to these kinases. To solve this problem, we generated derivatives of 293 cells with CRISPR knockout of one or both of CDK8 and CDK19. Double knockout (dKO) of CDK8 and CDK19 together (but not individually) decreased the induction of transcription by NFκB (a CDK8/19-potentiated transcription factor) and abrogated the effect of CDK8/19 inhibitors on such induction. We generated wild type (WT) and dKO cell lines expressing luciferase from an NFκB-dependent promoter. Inhibitors selective for CDK8/19 over other CDKs decreased TNFα-induced luciferase expression in …

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The Gut-Microbiome In Gulf War Veterans: A Preliminary Report, Patricia A. Janulewicz, Ratanesh K. Seth, Jeffrey M. Carlson, Joy Ajama, Emily Quinn, Timothy Heeren, Nancy Klimas, Steven M. Lasley, Ronnie Horner, Kimberly Sullivan, Saurabh Chatterjee Oct 2019

The Gut-Microbiome In Gulf War Veterans: A Preliminary Report, Patricia A. Janulewicz, Ratanesh K. Seth, Jeffrey M. Carlson, Joy Ajama, Emily Quinn, Timothy Heeren, Nancy Klimas, Steven M. Lasley, Ronnie Horner, Kimberly Sullivan, Saurabh Chatterjee

Faculty Publications

Gulf War Illness (GWI) is a chronic multi-symptom disorder affecting the central nervous system (CNS), immune and gastrointestinal (GI) systems of Gulf War veterans (GWV). We assessed the relationships between GWI, GI symptoms, gut microbiome and inflammatory markers in GWV from the Boston Gulf War Illness Consortium (GWIC). Three groups of GWIC veterans were recruited in this pilot study; GWV without GWI and no gastrointestinal symptoms (controls), GWV with GWI and no gastrointestinal symptoms (GWI-GI), GWV with GWI who reported gastrointestinal symptoms (GW+GI). Here we report on a subset of the first thirteen stool samples analyzed. Results showed significantly different …

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Egestion Versus Excretion: A Meta-Analysis Examining Nutrient Release Rates And Ratios Across Freshwater Fauna, Halvor Halvorson, Carla Atkinson Oct 2019

Egestion Versus Excretion: A Meta-Analysis Examining Nutrient Release Rates And Ratios Across Freshwater Fauna, Halvor Halvorson, Carla Atkinson

Faculty Publications

In aquatic settings, animals directly affect ecosystem functions through excretion of dissolved nutrients. However, the comparative role of egestion as an animal-mediated nutrient flux remains understudied. We conducted a literature survey and meta-analysis to directly compare nitrogen (N), phosphorus (P), and N:P of egestion compared to excretion rates and ratios across freshwater animals. Synthesizing 215 datasets across 47 animal species (all primary consumers or omnivores), we show that the total N and P egestion rates exceed inorganic N and P excretion rates but not total N and P excretion rates, and that proportions of P egested compared to excreted depend …

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Age And Growth Of Hardhead Catfish And Gafftopsail Catfish In Coastal Louisiana, Usa, Shane Flinn, Stephen Midway Oct 2019

Age And Growth Of Hardhead Catfish And Gafftopsail Catfish In Coastal Louisiana, Usa, Shane Flinn, Stephen Midway

Faculty Publications

The Hardhead Catfish Ariopsis felis and Gafftopsail Catfish Bagre marinus are marine catfishes that have low recreational and commercial landings in U.S. waters, although they are among the most abundant species in coastal waters of the Gulf of Mexico. Few biological studies exist on marine catfishes, with most studies focusing on their unique reproductive biology. This study evaluated weight-length relationships for Gafftopsail Catfish (n = 264) and Hardhead Catfish (n = 823) sampled from across coastal Louisiana, USA, during 2016-2018; subsamples (93 and 266, respectively) were aged using lapilli for age and growth analyses. Hardhead Catfish showed a small but …

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Frequent Fire Reorganizes Fungal Communities And Slows Decomposition Across A Heterogeneous Pine Savanna Landscape, Tatiana A. Semenova-Nelsen, William J. Platt, Taylor R. Patterson, Jean Huffman, Benjamin A. Sikes Oct 2019

Frequent Fire Reorganizes Fungal Communities And Slows Decomposition Across A Heterogeneous Pine Savanna Landscape, Tatiana A. Semenova-Nelsen, William J. Platt, Taylor R. Patterson, Jean Huffman, Benjamin A. Sikes

Faculty Publications

© 2019 The Authors. New Phytologist © 2019 New Phytologist Trust Pyrogenic savannas with a tree–grassland ‘matrix’ experience frequent fires (i.e. every 1–3 yr). Aboveground responses to frequent fires have been well studied, but responses of fungal litter decomposers, which directly affect fuels, remain poorly known. We hypothesized that each fire reorganizes belowground communities and slows litter decomposition, thereby influencing savanna fuel dynamics. In a pine savanna, we established patches near and away from pines that were either burned or unburned in that year. Within patches, we assessed fungal communities and microbial decomposition of newly deposited litter. Soil variables and …

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Pacts 1.0: A Crowdsourced Reporting Standard For Paleoclimate Data, Kristine Delong Oct 2019

Pacts 1.0: A Crowdsourced Reporting Standard For Paleoclimate Data, Kristine Delong

Faculty Publications

The progress of science is tied to the standardization of measurements, instruments, and data. This is especially true in the Big Data age, where analyzing large data volumes critically hinges on the data being standardized. Accordingly, the lack of community-sanctioned data standards in paleoclimatology has largely precluded the benefits of Big Data advances in the field. Building upon recent efforts to standardize the format and terminology of paleoclimate data, this article describes the Paleoclimate Community reporTing Standard (PaCTS), a crowdsourced reporting standard for such data. PaCTS captures which information should be included when reporting paleoclimate data, with the goal of …

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Hinge Region In Dna Packaging Terminase Pul15 Of Herpes Simplex Virus: A Potential Allosteric Target For Antiviral Drugs, Lana F. Thaljeh, J. Ainsley Rothschild, Misagh Naderi, Lyndon M. Coghill, Jeremy M. Brown, Michal Brylinski Oct 2019

Hinge Region In Dna Packaging Terminase Pul15 Of Herpes Simplex Virus: A Potential Allosteric Target For Antiviral Drugs, Lana F. Thaljeh, J. Ainsley Rothschild, Misagh Naderi, Lyndon M. Coghill, Jeremy M. Brown, Michal Brylinski

Faculty Publications

Approximately 80% of adults are infected with a member of the herpesviridae family. Herpesviruses establish life-long latent infections within neurons, which may reactivate into lytic infections due to stress or immune suppression. There are nine human herpesviruses (HHV) posing health concerns from benign conditions to life threatening encephalitis, including cancers associated with viral infections. The current treatment options for most HHV conditions mainly include several nucleoside and nucleotide analogs targeting viral DNA polymerase. Although these drugs help manage infections, their common mechanism of action may lead to the development of drug resistance, which is particularly devastating in immunocompromised patients. Therefore, …

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Sympathetic Innervation Of The Interscapular Brown Adipose Tissue In Mouse, Marie François, Hayden Torres, Clara Huesing, Rui Zhang, Carson Saurage, Nathan Lee, Emily Qualls-Creekmore, Sangho Yu, Christopher D. Morrison, David Burk, Hans Rudolf Berthoud, Heike Münzberg Oct 2019

Sympathetic Innervation Of The Interscapular Brown Adipose Tissue In Mouse, Marie François, Hayden Torres, Clara Huesing, Rui Zhang, Carson Saurage, Nathan Lee, Emily Qualls-Creekmore, Sangho Yu, Christopher D. Morrison, David Burk, Hans Rudolf Berthoud, Heike Münzberg

Faculty Publications

© 2019 The Authors. Annals of the New York Academy of Sciences published by Wiley Periodicals, Inc. on behalf of New York Academy of Sciences. The recent discovery of significant brown fat depots in adult humans has revived discussion of exploiting brown fat thermogenesis in the control of energy balance and body weight. The sympathetic nervous system (SNS) has a key role in the activation of brown fat and functional mapping of its components will be crucial for the development of specific neuromodulation techniques. The mouse is an important species used for molecular genetic modulations, but its small size is …

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Ecological And Genomic Attributes Of Novel Bacterial Taxa That Thrive In Subsurface Soil Horizons, Tess E. Brewer, Emma L. Aronson, Keshav Arogyaswamy, Sharon A. Billings, Jon K. Botthoff, Ashley N. Campbell, Nicholas C. Dove, Dawson Fairbanks, Rachel E. Gallery, Stephen C. Hart, Jason Kaye, Gary King, Geoffrey Logan, Kathleen A. Lohse, Mia R. Maltz, Emilio Mayorga, Caitlin O'Neill, Sarah M. Owens, Aaron Packman, Jennifer Pett-Ridge, Alain F. Plante, Daniel D. Richter, Whendee L. Silver, Wendy H. Yang, Noah Fierer Oct 2019

Ecological And Genomic Attributes Of Novel Bacterial Taxa That Thrive In Subsurface Soil Horizons, Tess E. Brewer, Emma L. Aronson, Keshav Arogyaswamy, Sharon A. Billings, Jon K. Botthoff, Ashley N. Campbell, Nicholas C. Dove, Dawson Fairbanks, Rachel E. Gallery, Stephen C. Hart, Jason Kaye, Gary King, Geoffrey Logan, Kathleen A. Lohse, Mia R. Maltz, Emilio Mayorga, Caitlin O'Neill, Sarah M. Owens, Aaron Packman, Jennifer Pett-Ridge, Alain F. Plante, Daniel D. Richter, Whendee L. Silver, Wendy H. Yang, Noah Fierer

Faculty Publications

While most bacterial and archaeal taxa living in surface soils remain undescribed, this problem is exacerbated in deeper soils, owing to the unique oligotrophic conditions found in the subsurface. Additionally, previous studies of soil microbiomes have focused almost exclusively on surface soils, even though the microbes living in deeper soils also play critical roles in a wide range of biogeochemical processes. We examined soils collected from 20 distinct profiles across the United States to characterize the bacterial and archaeal communities that live in subsurface soils and to determine whether there are consistent changes in soil microbial communities with depth across …

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Allele-Specific Enhancer Interaction At The Peg3 Imprinted Domain, Joomyeong Kim, Wesley D. Frey, Kaustubh Sharma, Subash Ghimire, Ryoichi Teruyama, Lisa Stubbs Oct 2019

Allele-Specific Enhancer Interaction At The Peg3 Imprinted Domain, Joomyeong Kim, Wesley D. Frey, Kaustubh Sharma, Subash Ghimire, Ryoichi Teruyama, Lisa Stubbs

Faculty Publications

Copyright: © 2019 Kim et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. The parental allele specificity of mammalian imprinted genes has been evolutionarily well conserved, although its functional constraints and associated mechanisms are not fully understood. In the current study, we generated a mouse mutant with switched active alleles driving the switch from paternal-to-maternal expression for Peg3 and the maternal-to-paternal expression for Zim1. The expression levels of Peg3 and Zim1, but not …

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Efficiency Of Insect-Proof Net Tunnels In Reducing Virus-Related Seed Degeneration In Sweet Potato, K. O. Ogero, J. F. Kreuze, M. A. Mcewan, N. D. Luambano, H. Bachwenkizi, K. A. Garrett, K. F. Andersen, S. Thomas-Sharma, R. A.A. Van Der Vlugt Oct 2019

Efficiency Of Insect-Proof Net Tunnels In Reducing Virus-Related Seed Degeneration In Sweet Potato, K. O. Ogero, J. F. Kreuze, M. A. Mcewan, N. D. Luambano, H. Bachwenkizi, K. A. Garrett, K. F. Andersen, S. Thomas-Sharma, R. A.A. Van Der Vlugt

Faculty Publications

Virus-related degeneration constrains production of quality sweet potato seed, especially under open field conditions. Once in the open, virus-indexed seed is prone to virus infection leading to decline in performance. Insect-proof net tunnels have been proven to reduce virus infection under researcher management. However, their effectiveness under farmer-multiplier management is not known. This study investigated the ability of net tunnels to reduce degeneration in sweet potato under farmer-multiplier management. Infection and degeneration were assessed for two cultivars, Kabode and Polista, grown in net tunnels and open fields at two sites with varying virus pressures. There was zero virus incidence at …

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Fecundity Of The Parental And Fitness Of The F1 Populations Of Corn Earworm From Refuge Ears Of Seed Blend Plantings With Genuity® Smartstax™ Maize, Jianguo Guo, Fei Yang, Sebe Brown, David Kern, Graham P. Head, Paula A. Price, Ying Niu, Fangneng Huang Oct 2019

Fecundity Of The Parental And Fitness Of The F1 Populations Of Corn Earworm From Refuge Ears Of Seed Blend Plantings With Genuity® Smartstax™ Maize, Jianguo Guo, Fei Yang, Sebe Brown, David Kern, Graham P. Head, Paula A. Price, Ying Niu, Fangneng Huang

Faculty Publications

Seed blend, also called ‘refuge-in-the-bag (RIB)’, has been used as a refuge strategy to generate susceptible insect populations for Bt maize resistance management in the U.S. Corn Belt. A major concern related to the use of RIB is the cross-pollination of maize plants that cause Bt protein expression in the kernels of refuge ears. Bt protein expression in the refuge ears can negatively affect the insect populations on refuge plants, especially for ear feeders such as the corn earworm, Helicoverpa zea (Boddie). The current study investigated the reproduction of three populations of H. zea collected from a pure stand of …

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Hinge Region In Dna Packaging Terminase Pul15 Of Herpes Simplex Virus: A Potential Allosteric Target For Antiviral Drugs, Lana F. Thaljeh, J. Ainsley Rothschild, Misagh Naderi, Lyndon M. Coghill Oct 2019

Hinge Region In Dna Packaging Terminase Pul15 Of Herpes Simplex Virus: A Potential Allosteric Target For Antiviral Drugs, Lana F. Thaljeh, J. Ainsley Rothschild, Misagh Naderi, Lyndon M. Coghill

Faculty Publications

Approximately 80% of adults are infected with a member of the herpesviridae family. Herpesviruses establish life-long latent infections within neurons, which may reactivate into lytic infections due to stress or immune suppression. There are nine human herpesviruses (HHV) posing health concerns from benign conditions to life threatening encephalitis, including cancers associated with viral infections. The current treatment options for most HHV conditions mainly include several nucleoside and nucleotide analogs targeting viral DNA polymerase. Although these drugs help manage infections, their common mechanism of action may lead to the development of drug resistance, which is particularly devastating in immunocompromised patients. Therefore, …

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Response Of Water Resources To Future Climate Change In A High-Latitude River Basin, Peng Qi, Guangxin Zhang, Yi Jun Xu, Zhikun Xia, Ming Wang Oct 2019

Response Of Water Resources To Future Climate Change In A High-Latitude River Basin, Peng Qi, Guangxin Zhang, Yi Jun Xu, Zhikun Xia, Ming Wang

Faculty Publications

Global water resources are affected by climate change as never before. However, it is still unclear how water resources in high latitudes respond to climate change. In this study, the water resource data for 2021-2050 in the Naoli River Basin, a high-latitude basin in China, are calculated by using the SWAT-Modflow Model and future climate scenarios RCP4.5 and RCP8.5. The results show a decreasing trend. When compared to the present, future streamflow is predicted to decrease by 2.73 × 108 m3 in 2021-2035 and by 1.51 × 108 m3 in 2036-2050 in the RCP4.5 scenario, and by 8.16 × 108 …

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Dam Effects On Downstream Riparian Wetlands: The Nenjiang River, Northeast China, Yuexin Zheng, Guangxin Zhang, Yanfeng Wu, Y. Jun Xu, Changlei Dai Oct 2019

Dam Effects On Downstream Riparian Wetlands: The Nenjiang River, Northeast China, Yuexin Zheng, Guangxin Zhang, Yanfeng Wu, Y. Jun Xu, Changlei Dai

Faculty Publications

Many studies have found that damming a river can change downstream hydrology, sediment transport, channel morphology, and fish habitat. However, little is known about river dam effects on downstream riparian wetland dynamics and their quantitative relationship with hydrological alterations. In this study, hydrological time series and wetland distribution data spanning nearly 40 years (1978-2016) before and after the construction of a large dam in 2005 across the Nenjiang River in Northeast China were used to reveal the impact of dam on the downstream discharge regime and wetland degradation. Hydro-statistical and stepwise multiple regression analyses were performed to quantify the relationship …

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Quantifying Soil Health In A Topographically Diverse Warm-Season Perennial Pasture Over-Seeded With A Mix Of Cool-Season Annuals, Kathleen M. Bridges, Lisa M. Fultz, Montgomery W. Alison, Kun Jun Han, Bisoondat Macoon, William D. Pitman Oct 2019

Quantifying Soil Health In A Topographically Diverse Warm-Season Perennial Pasture Over-Seeded With A Mix Of Cool-Season Annuals, Kathleen M. Bridges, Lisa M. Fultz, Montgomery W. Alison, Kun Jun Han, Bisoondat Macoon, William D. Pitman

Faculty Publications

Over-seeding cool-season annual forages in pastures in the southeastern US provides increased grazing opportunities for livestock and reduces the amount of hay needed during winter. The constant presence of vegetation can benefit soil health, the biological aspect of which has only received cursory investigation to date. Since 2009, a commercial cattle grazing operation located in south Mississippi has been over-seeding a diverse mixture of oats (Avena sativa L.), triticale (X Triticosecale Wittmack), annual ryegrass (Lolium multiflorum Lam.), hairy vetch (Vicia villosa Roth), radish (Raphanus sativus L.), turnips (Brassica rapa L. subsp. rapa), red clover (Trifolium pratense L.), ball clover (Trifolium …

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Relative Resistance To Breaking Of Pinus Taeda And Pinus Palustris, Cory Garms, Thomas J. Dean Oct 2019

Relative Resistance To Breaking Of Pinus Taeda And Pinus Palustris, Cory Garms, Thomas J. Dean

Faculty Publications

Patterns from hurricane damage indicate that longleaf pine is more windfirm than loblolly pine. Tree windfirmess has been attributed to many factors including species and material properties like wood strength and stiffness. Because longleaf pine wood is stronger and stiffer than loblolly pine wood, this study used static winching methodology to see if these properties account for differences in wind firmness by measuring bending force required to break stems (MMAX). Stress-strain diagrams were constructed for pulled trees to explore how they behave under increasing loads. Based on these diagrams, living trees appear to act as linear elastic materials as they …

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Leaf Reflectance Spectroscopy Captures Variation In Carboxylation Capacity Across Species, Canopy Environment And Leaf Age In Lowland Moist Tropical Forests, Jin Wu, Alistair Rogers, Loren P. Albert, Kim Ely, Neill Prohaska, Brett T. Wolfe, Raimundo Cosme Oliveira, Scott R. Saleska, Shawn P. Serbin Oct 2019

Leaf Reflectance Spectroscopy Captures Variation In Carboxylation Capacity Across Species, Canopy Environment And Leaf Age In Lowland Moist Tropical Forests, Jin Wu, Alistair Rogers, Loren P. Albert, Kim Ely, Neill Prohaska, Brett T. Wolfe, Raimundo Cosme Oliveira, Scott R. Saleska, Shawn P. Serbin

Faculty Publications

Understanding the pronounced seasonal and spatial variation in leaf carboxylation capacity (Vc,max) is critical for determining terrestrial carbon cycling in tropical forests. However, an efficient and scalable approach for predicting Vc,max is still lacking. Here the ability of leaf spectroscopy for rapid estimation of Vc,max was tested. Vc,max was estimated using traditional gas exchange methods, and measured reflectance spectra and leaf age in leaves sampled from tropical forests in Panama and Brazil. These data were used to build a model to predict Vc,max from leaf spectra. The results demonstrated that leaf spectroscopy accurately predicts Vc,max of mature leaves in Panamanian …

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Climate And Plant Trait Strategies Determine Tree Carbon Allocation To Leaves And Mediate Future Forest Productivity, Anna T. Trugman, Leander D.L. Anderegg, Brett T. Wolfe, Benjamin Birami, Nadine K. Ruehr, Matteo Detto, Megan K. Bartlett, William R.L. Anderegg Oct 2019

Climate And Plant Trait Strategies Determine Tree Carbon Allocation To Leaves And Mediate Future Forest Productivity, Anna T. Trugman, Leander D.L. Anderegg, Brett T. Wolfe, Benjamin Birami, Nadine K. Ruehr, Matteo Detto, Megan K. Bartlett, William R.L. Anderegg

Faculty Publications

Forest leaf area has enormous leverage on the carbon cycle because it mediates both forest productivity and resilience to climate extremes. Despite widespread evidence that trees are capable of adjusting to changes in environment across both space and time through modifying carbon allocation to leaves, many vegetation models use fixed carbon allocation schemes independent of environment, which introduces large uncertainties into predictions of future forest responses to atmospheric CO2 fertilization and anthropogenic climate change. Here, we develop an optimization-based model, whereby tree carbon allocation to leaves is an emergent property of environment and plant hydraulic traits. Using a combination of …

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Isolation And Characterization Of Cdna Clones Encoding A Novel Subfamily Sporamin B In Sweet Potato, Jollanda Effendy, Don R. Labonte, Darda Efendi Oct 2019

Isolation And Characterization Of Cdna Clones Encoding A Novel Subfamily Sporamin B In Sweet Potato, Jollanda Effendy, Don R. Labonte, Darda Efendi

Faculty Publications

Three cDNAs (IbH23, IbH41, and IbH74) encoding sporamin of sweet potato, were isolated from a skinning injury cDNA library. The open reading frame consisted of 288 nucleotides and the deduced polypeptide sequences consist of 96 amino acids with missing 127 amino acid residues at 5′. The sequences shared identity [42-62% (IbH23 and IbH41) and 40-61% (IbH74)] to sporamins A and B previously identified in other sweet potato species. The IbSpors contained three of four signature cysteine residues of sporamin family (Cys135, Cys198, Cys209). In addition to similarity to sporamins, these cDNA clones also showed similarities to miraculin (29-35%); Kunitz trypsin …

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Postbreeding Habitat Use By Golden-Cheeked Warblers (Setophaga Chrysoparia), Melanie R. Colón, Mark R. Hutchinson, Ashley M. Long, Gary Voelker, Michael L. Morrison Oct 2019

Postbreeding Habitat Use By Golden-Cheeked Warblers (Setophaga Chrysoparia), Melanie R. Colón, Mark R. Hutchinson, Ashley M. Long, Gary Voelker, Michael L. Morrison

Faculty Publications

The period following breeding but prior to migration is an important, though understudied, component of the avian annual life cycle. We quantified habitat use by endangered Golden-cheeked Warblers (Setophaga chrysoparia) during the postbreeding period in Golden-cheeked Warbler breeding habitat (i.e., oak-juniper [Quercus-Juniperus] woodlands) predominated by Texas oak (Quercus buckleyi) or post oak (Q. stellata), as well as in immediately adjacent oak woodland, oak savanna, and riparian vegetation not usually associated with breeding activity for this species. Most (87%) of the Golden-cheeked Warblers we detected were in oak-juniper woodlands, especially in Texas oak sites, but we also detected warblers in each …

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Habitability Of The Oceanic Alkaline Serpentinite Subsurface: A Case Study Of The Lost City Hydrothermal Field, Susan Q. Lang, William J. Brazelton Oct 2019

Habitability Of The Oceanic Alkaline Serpentinite Subsurface: A Case Study Of The Lost City Hydrothermal Field, Susan Q. Lang, William J. Brazelton

Faculty Publications

The Lost City hydrothermal field is a dramatic example of the biological potential of serpentinization. Microbial life is prevalent throughout the Lost City chimneys, powered by the hydrogen gas and organic molecules produced by serpentinization and its associated geochemical reactions. Microbial life in the serpentinite subsurface below the Lost City chimneys, however, is unlikely to be as dense or active. The marine serpentinite subsurface poses serious challenges for microbial activity, including low porosities, the combination of stressors of elevated temperature, high pH and a lack of bioavailable ∑CO2. A better understanding of the biological opportunities and challenges in serpentinizing systems …

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An Integrated Approach For Constraining Depositional Zones In A Tide-Influenced River: Insights From The Gorai River, Southwest Bangladesh, Edwin J. Bomer, Carol A. Wilson, Dilip K. Datta Oct 2019

An Integrated Approach For Constraining Depositional Zones In A Tide-Influenced River: Insights From The Gorai River, Southwest Bangladesh, Edwin J. Bomer, Carol A. Wilson, Dilip K. Datta

Faculty Publications

The tidal to fluvial transition (TFT) of estuaries and coastal rivers is one of the most complex environments on Earth with respect to the transportation and deposition of sediment, owing in large part to competing fluvial and marine processes. While there have been recent advances in the stratigraphic understanding of the TFT, it is still unclear whether these findings are site-specific or representative of mixed tidal-fluvial systems worldwide. Yet, research from this depositional domain holds profound societal and economic importance. For instance, understanding the underlying stratigraphic architecture of channel margins is critical for assessing geomorphic change for fluvio-deltaic settings, which …

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Detecting Dna Methylation Using Surface-Enhanced Raman Spectroscopy, Syed Mohammad Abid Hasan, Yuyang He, Te Wei Chang, Jianwei Wang, Manas Ranjan Gartia Oct 2019

Detecting Dna Methylation Using Surface-Enhanced Raman Spectroscopy, Syed Mohammad Abid Hasan, Yuyang He, Te Wei Chang, Jianwei Wang, Manas Ranjan Gartia

Faculty Publications

Copyright © 2018 American Chemical Society. Among all of the epigenetic events that are responsible for various diseases such as cancer, lupus, and several birth defects, DNA methylation is one of the crucial ones. It occurs because of the alkylation of various bases. These modifications of genes carried through altered creations of proteins ultimately lead to various diseases. For example, a vital cause behind canine lymphoma is found to be DNA methylation in the guanine base. In this work, we analyzed the methylated and nonmethylated guanine structure with the assistance of surface-enhanced Raman spectroscopy and density functional theory (DFT). Because …

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Mother-To-Mother: Evaluation Of The Sustainability Of A Peer Model To Communicate Nutrition Messages In Mozambique, Disa Lubker Cornish, Halkeno Tura, Susan Roberts-Dobie Oct 2019

Mother-To-Mother: Evaluation Of The Sustainability Of A Peer Model To Communicate Nutrition Messages In Mozambique, Disa Lubker Cornish, Halkeno Tura, Susan Roberts-Dobie

Faculty Publications

Background: Over the past twenty-five years, Africa had experienced the smallest relative decrease of child undernutrition in any world region. Many aid organizations were redirecting efforts and resources to supporting community - based initiatives such as Community Health Work (CHW). Aim / Objectives: While peer models showed short term hope, there was limited long-term evidence. The study expounded upon an evaluation on a health promotion program using the Care Group Model. The objective of this research was to examine the sustainability of health gains associated with the use of CHWs via a Care Group Model as a health promotion strategy …

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The Effect Of Group Polarization On Opposition To Donald Trump, Marija A. Bekafigo, Elena V. Stepanova, Brian A. Eiler, Kenji Noguchi, Kathleen L. Ramsey Oct 2019

The Effect Of Group Polarization On Opposition To Donald Trump, Marija A. Bekafigo, Elena V. Stepanova, Brian A. Eiler, Kenji Noguchi, Kathleen L. Ramsey

Faculty Publications

Using focus groups, we examined support and opposition for Donald Trump prior to the 2016 presidential election. When ingroup members participate in discussion, this conversation alone typically strengthens and intensifies members’ initial attitudes. We used a pre‐ to post‐focus‐group questionnaire to assess attitudes toward Trump, his campaign, and policies. We argue that group polarization influenced people’s opinions about Trump such that attitudes became more extreme after discussion with like‐minded individuals. We report changes for Trump nonsupporters for which group polarization occurred on attitudes toward illegal immigration, political correctness, the military, women, and veterans after the group discussion. For each, level …

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Visualizing Nutrient Effects On Root Pattern Formation, Robert E. Zdor Oct 2019

Visualizing Nutrient Effects On Root Pattern Formation, Robert E. Zdor

Faculty Publications

This lab gives students hands-on experience with visualizing the root architecture of plants exposed to varying concentrations of the vital nutrient phosphorus. By maintaining Brassica sp. seedlings in the presence of different quantities of phosphate, students can quantify changes in the number of lateral roots as an example of how the environment influences plant pattern formation. Additional variables in the experimental design, such as the use of plant mutants altered in plant regulator action or the presence of plant regulators in the plant growth medium, allow for exploration of how plant growth regulators are involved in root development. The quantitative …

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Shelf Inputs And Lateral Transport Of Mn, Co, And Ce In The Western North Pacific Ocean, Peter L. Morton, William M. Landing, Alan M. Shiller, Thomas D. Kelly, Michael Bizimis, John R. Donat, Eric H. De Carlo, Joseph Shacat Sep 2019

Shelf Inputs And Lateral Transport Of Mn, Co, And Ce In The Western North Pacific Ocean, Peter L. Morton, William M. Landing, Alan M. Shiller, Thomas D. Kelly, Michael Bizimis, John R. Donat, Eric H. De Carlo, Joseph Shacat

Faculty Publications

The margin of the western North Pacific Ocean releases redox-active elements like Mn, Co, and Ce into the water column to undergo further transformation through oxide formation, scavenging, and reductive dissolution. Near the margin, the upper ocean waters enriched in these elements are characterized by high dissolved oxygen, low salinity, and low temperature, and are a source of the North Pacific Intermediate Water. High dissolved concentrations are observed across the Western Subarctic Gyre, with a rapid decrease in concentrations away from the margin and across the subarctic-subtropical front. The particulate concentrations of Mn, Co, and Ce are also high in …

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Effect Of Bark Application With Beauveria Bassiana And Permethrin Insecticide On The Walnut Twig Beetle (Coleoptera: Curculionidae) In Black Walnut Bolts, Albert E. Mayfield, Jennifer Juzwik, Jamison Scholer, John D. Vandenberg, Adam Taylor, Timothy Schowalter Sep 2019

Effect Of Bark Application With Beauveria Bassiana And Permethrin Insecticide On The Walnut Twig Beetle (Coleoptera: Curculionidae) In Black Walnut Bolts, Albert E. Mayfield, Jennifer Juzwik, Jamison Scholer, John D. Vandenberg, Adam Taylor, Timothy Schowalter

Faculty Publications

Formulations of entomopathogenic (insect-killing) fungi represent alternatives to synthetic insecticides in the management of forest and shade tree insects. We evaluated bark spray applications of the entomopathogen Beauveria bassiana (Balsamo) Vuillemin (Hypocreales: Cordycipitaceae) strain GHA (BotaniGardES), permethrin insecticide (Astro), and water (control) on colonization of black walnut (Juglans nigra L.) (Fagales: Juglandaceae) bolts by the walnut twig beetle (Pityophthorus juglandis Blackman) (Coleoptera: Curculionidae), vector of the fungus that causes thousand cankers disease. Treated bolts were baited with a P. juglandis aggregation pheromone lure and deployed in infested walnut trees. Bark application of permethrin prevented P. juglandis colonization of the phloem. …

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