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Faculty Publications

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Articles 541 - 570 of 745

Full-Text Articles in Biology

Algal Regulation Of Extracellular Enzyme Activity In Stream Microbial Communities Associated With Inert Substrata And Detritus, Steven T. Rier, Kevin A. Kuehn, Steven N. Francoeur Sep 2007

Algal Regulation Of Extracellular Enzyme Activity In Stream Microbial Communities Associated With Inert Substrata And Detritus, Steven T. Rier, Kevin A. Kuehn, Steven N. Francoeur

Faculty Publications

We tested the hypothesis that algae influence the activities of extracellular enzymes involved in mineralization processes within microbial assemblages in streams. We tested the prediction that the factors that influence algal biomass and photosynthesis (i.e., diel fluctuations in photosynthetically active radiation [PAR], long-term variations in light regime, and community development stage) would have a corresponding effect on extracellular enzyme activities. We also tested the prediction that algae would influence enzyme activities on inorganic substrata and in detrital communities where they ultimately would influence plant litter decomposition rates. We allowed microbial communities to develop on inert substrata (glass-fiber filters) or on …

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Distinguishing Importation From Diversification Of Quinolone-Resistant Neisseria Gonorrhoeae By Molecular Evolutionary Analysis, Keith A. Crandall, Marcos Perez-Losada, Margaret C. Bash, Michael Dan, Jonathan Zenilman, Raphael P. Viscidi Jun 2007

Distinguishing Importation From Diversification Of Quinolone-Resistant Neisseria Gonorrhoeae By Molecular Evolutionary Analysis, Keith A. Crandall, Marcos Perez-Losada, Margaret C. Bash, Michael Dan, Jonathan Zenilman, Raphael P. Viscidi

Faculty Publications

Distinguishing the recent introduction of quinolone resistant gonococci into a population from diversification of resistant strains already in the population is important for planning effective infection control strategies. We applied molecular evolutionary analyses to DNA sequences from 9 housekeeping genes and gyrA, parC and porB of 24 quinolone resistant N. gonorrhoeae (QRNG) and 24 quinolone sensitive isolates collected in Israel during 2000-2001. Results- Phylogenetic and eBURST analyses and estimates of divergence time indicated QRNG were introduced on 3 separate occasions and underwent limited diversification by mutation, deletion and horizontal gene transfer. Reconstruction of N. gonorrhoeae demography showed a slowly declining …

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A Direct Role Of Jh In The Control Of Imaginal Disc Formation And Growth In Manduca, J. W. Truman, K. Hiruma, J. P. Allee, S.G.B. Macwhinnie, David Champlin Ph.D., L. M. Riddiford May 2007

A Direct Role Of Jh In The Control Of Imaginal Disc Formation And Growth In Manduca, J. W. Truman, K. Hiruma, J. P. Allee, S.G.B. Macwhinnie, David Champlin Ph.D., L. M. Riddiford

Faculty Publications

No abstract provided.

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Selective Cholesterol Dynamics Between Lipoproteins And Caveolae/Lipid Rafts, Stephen M. Storey, Adalberto M. Gallegos, Barbara P. Atshaves, Avery L. Mcintosh, Gregory G. Martin, Rebecca D. Parr, Kerstin K. Landrock, Ann B. Kier, Judith M. Ball, Friedhelm Schroeder Jan 2007

Selective Cholesterol Dynamics Between Lipoproteins And Caveolae/Lipid Rafts, Stephen M. Storey, Adalberto M. Gallegos, Barbara P. Atshaves, Avery L. Mcintosh, Gregory G. Martin, Rebecca D. Parr, Kerstin K. Landrock, Ann B. Kier, Judith M. Ball, Friedhelm Schroeder

Faculty Publications

Although low-density lipoprotein (LDL) receptor-mediated cholesterol uptake through clathrin-coated pits is now well understood, the molecular details and organizing principles for selective cholesterol uptake/efflux (reverse cholesterol transport, RCT) from peripheral cells remain to be resolved. It is not yet completely clear whether RCT between serum lipoproteins and the plasma membrane occurs primarily through lipid rafts/caveolae or from non-raft domains. To begin to address these issues, lipid raft/caveolae-, caveolae-, and non-raft-enriched fractions were resolved from purified plasma membranes isolated from L-cell fibroblasts and MDCK cells by detergent-free affinity chromatography and compared with detergent-resistant membranes isolated from the same cells. Fluorescent sterol …

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Ultrastructure Of Teliospores And Promycelium And Basidiospore Formation In The Four-Spored Form Of Gymnoconia Nitens, One Of The Causes Of Orange Rust Of Rubus, C. W. Mims, E. A. Richardson, Josephine Taylor Jan 2007

Ultrastructure Of Teliospores And Promycelium And Basidiospore Formation In The Four-Spored Form Of Gymnoconia Nitens, One Of The Causes Of Orange Rust Of Rubus, C. W. Mims, E. A. Richardson, Josephine Taylor

Faculty Publications

Orange rust of Rubus is an interesting disease because of the fact that it can be caused by three different rust fungi that produce virtually identical symptoms. One is Gymnoconia peckiana (Howe in Peck) Trotter, which is a demicyclic species, while the other two are endocyclic forms historically referred to as Gymnoconia nitens (Schwein.) Kern & H.W. Thurston. Although the spores produced on infected Rubus leaves by these latter two forms are morphologically identical to the aeciospores of G. peckiana, they actually function as teliospores. However, the teliospores of one of the forms gives rise to two-celled promycelia that …

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Updated And New Amphibian And Reptile Records From Clark County, Illinois [Abstract], C. Drew Foster, Stephen J. Mullin Jan 2007

Updated And New Amphibian And Reptile Records From Clark County, Illinois [Abstract], C. Drew Foster, Stephen J. Mullin

Faculty Publications

No abstract provided.

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Population Responses Of Wood Frog (Rana Sylvatica) Tadpoles To Overwintered Bullfrog (Rana Catesbeiana) Tadpoles, Leroy J. Walston, Stephen J. Mullin Jan 2007

Population Responses Of Wood Frog (Rana Sylvatica) Tadpoles To Overwintered Bullfrog (Rana Catesbeiana) Tadpoles, Leroy J. Walston, Stephen J. Mullin

Faculty Publications

A fundamental goal in ecology is to understand how environmental variation influences the distribution of individuals within a population. In this study, we used laboratory experiments to examine the population responses of sympatric Wood Frog (Rana sylvatica) tadpoles to native overwintered Bullfrog (Rana catesbeiana) tadpoles. For periods of up to two weeks, we measured growth, activity, and refuge use of Wood Frog tadpoles in small mesocosms with and without an overwintered Bullfrog tadpole present. Bullfrog tadpoles had a negative effect on the growth of Wood Frog tadpoles allotopic (naive) to Bullfrogs, whereas the presence of Bullfrogs had no effect on …

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A New N-Terminal Recognition Domain In Caveolin-1 Interacts With Sterol Carrier Protein-2 (Scp-2), Rebecca D. Parr, Gregory G. Martin, Heather A. Hostetler, Megan E. Schroeder, Kiran D. Mir, Ann B. Kier, Judith M. Ball, Friedhelm Schroeder Jan 2007

A New N-Terminal Recognition Domain In Caveolin-1 Interacts With Sterol Carrier Protein-2 (Scp-2), Rebecca D. Parr, Gregory G. Martin, Heather A. Hostetler, Megan E. Schroeder, Kiran D. Mir, Ann B. Kier, Judith M. Ball, Friedhelm Schroeder

Faculty Publications

Although plasma membrane domains, such as caveolae, provide an organizing principle for signaling pathways and cholesterol homeostasis in the cell, relatively little is known regarding specific mechanisms, whereby intracellular lipid-binding proteins are targeted to caveolae. Therefore, the interaction between caveolin-1 and sterol carrier protein-2 (SCP-2), a protein that binds and transfers both cholesterol and signaling lipids (e.g., phosphatidylinositides and sphingolipids), was examined by yeast two-hybrid, in vitro binding and fluorescence resonance energy transfer (FRET) analyses. Results of the in vivo and in vitro assays identified for the first time the N-terminal amino acids (aa) 1−32 amphipathic α helix of SCP-2 …

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Full-Length, Glycosylated Nsp4 Is Localized To Plasma Membrane Caveolae By A Novel Raft Isolation Technique, Stephen M. Storey, Thomas F. Gibbons, Cecelia V. Williams, Rebecca D. Parr, Friedhelm Schroeder, Judith M. Ball Jan 2007

Full-Length, Glycosylated Nsp4 Is Localized To Plasma Membrane Caveolae By A Novel Raft Isolation Technique, Stephen M. Storey, Thomas F. Gibbons, Cecelia V. Williams, Rebecca D. Parr, Friedhelm Schroeder, Judith M. Ball

Faculty Publications

Rotavirus NSP4, initially characterized as an endoplasmic reticulum intracellular receptor, is a multifunctional viral enterotoxin that induces diarrhea in murine pups. There have been recent reports of the secretion of a cleaved NSP4 fragment (residues 112 to 175) and of the association of NSP4 with LC3-positive autophagosomes, raft membranes, and microtubules. To determine if NSP4 traffics to a specific subset of rafts at the plasma membrane, we isolated caveolae from plasma membrane-enriched material that yielded caveola membranes free of endoplasmic reticulum and nonraft plasma membrane markers. Analyses of the newly isolated caveolae from rotavirus-infected MDCK cells revealed full-length, high-mannose glycosylated …

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Assessment Of Genetic Diversity In The Usda And Cip-Fao International Nursery Collections Of Quinoa (Chenopodium Quinoa Willd.) Using Microsatellite Markers [Abstract], S. A. Christensen, Donald B. Pratt, C. Pratt, P. T. Nelson, M. R. Stevens, Eric N. Jellen, C. E. Coleman, D. J. Fairbanks, A. Bonifacio, Peter J. Maughan Jan 2007

Assessment Of Genetic Diversity In The Usda And Cip-Fao International Nursery Collections Of Quinoa (Chenopodium Quinoa Willd.) Using Microsatellite Markers [Abstract], S. A. Christensen, Donald B. Pratt, C. Pratt, P. T. Nelson, M. R. Stevens, Eric N. Jellen, C. E. Coleman, D. J. Fairbanks, A. Bonifacio, Peter J. Maughan

Faculty Publications

No abstract provided.

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From Observers To Participants: Joining The Scientific Community, Catherine A. Reinke, Susan R. Singer, Carl Mcdaniel, Carolyn J. Ferguson, Julia Vandermeer, Adam Williamson Jan 2007

From Observers To Participants: Joining The Scientific Community, Catherine A. Reinke, Susan R. Singer, Carl Mcdaniel, Carolyn J. Ferguson, Julia Vandermeer, Adam Williamson

Faculty Publications

In this essay, we have integrated the voices of our mentors and students to explore 45 years of undergraduate research experiences and their role in shaping our scientific community. In considering our collective experiences, we see undergraduate involvement in research as a rich source of community development, one that has both touched our lives and influenced our teaching.

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Threatened Fishes Of The World: Percilia Irwini (Eigenmann 1927) (Perciliidae), Evelyn Habit, Mark C. Belk Jan 2007

Threatened Fishes Of The World: Percilia Irwini (Eigenmann 1927) (Perciliidae), Evelyn Habit, Mark C. Belk

Faculty Publications

Common name: Carmelita de Concepcion (Spanish).

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Observations On The Diets Of An Anuran And Eight Lizard Taxa From Sonora, Chihuahua, And Coahuila, Mexico, With Some Notes On Clutch Sizes, Geoffrey R. Smith, J. A. Lemos-Espinal, Christopher B. Dibble, Megan E. Ogle, Joshua J. Schulte, Andrew J. Terlecky, Allison Boyd Jan 2007

Observations On The Diets Of An Anuran And Eight Lizard Taxa From Sonora, Chihuahua, And Coahuila, Mexico, With Some Notes On Clutch Sizes, Geoffrey R. Smith, J. A. Lemos-Espinal, Christopher B. Dibble, Megan E. Ogle, Joshua J. Schulte, Andrew J. Terlecky, Allison Boyd

Faculty Publications

No abstract provided.

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Biological Status Of Leatherside Chub: A Framework For Conservation Of Western Freshwater Fishes, Mark C. Belk, Jerald B. Johnson Jan 2007

Biological Status Of Leatherside Chub: A Framework For Conservation Of Western Freshwater Fishes, Mark C. Belk, Jerald B. Johnson

Faculty Publications

Outside of anadromous salmonids and a few endangered species, biology of native freshwater fishes of western North America is poorly known. What do we need to know to effectively manage native species and avoid decline and extinction? A recent analysis of the role of science in the Pacific salmon controversy outlines a clear framework for biological evaluation and management of native species. This framework has three components: (1) determine status of populations based on genetic and ecological variation, (2) identify and quantify threats to populations, and (3) determine actions to alleviate threats and promote conservation of populations. We use our …

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Amyloid-Β-Induced Pathological Behaviors Are Suppressed By Ginkgo Biloba Extract Egb 761 And Ginkgolides In Transgenic Caenorhabditis Elegans, Yanjue Wu, Zhixin Wu, Peter Butko, Yves Christen, Mary P. Lambert, William L. Klein, Christopher D. Link, Yuan Luo Dec 2006

Amyloid-Β-Induced Pathological Behaviors Are Suppressed By Ginkgo Biloba Extract Egb 761 And Ginkgolides In Transgenic Caenorhabditis Elegans, Yanjue Wu, Zhixin Wu, Peter Butko, Yves Christen, Mary P. Lambert, William L. Klein, Christopher D. Link, Yuan Luo

Faculty Publications

Amyloid-β (Aβ) toxicity has been postulated to initiate synaptic loss and subsequent neuronal degeneration seen in Alzheimer's disease (AD). We previously demonstrated that the standardized Ginkgo biloba extract EGb 761, commonly used to enhance memory and by AD patients for dementia, inhibits Aβ-induced apoptosis in neuroblastoma cells. In this study, we use EGb 761 and its single constituents to associate Aβ species with Aβ-induced pathological behaviors in a model organism, Caenorhabditis elegans. We report that EGb 761 and one of its components, ginkgolide A, alleviates Aβ-induced pathological behaviors, including paralysis, and reduces chemotaxis behavior and 5-HT hypersensitivity in a transgenic …

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Linking Bacterioplankton Community Structures To Environmental State Variables And Phytoplankton Assemblages In Two South Carolina Salt Marsh Estuaries, Wes Johnson, Alan J. Lewitus, Madilyn Fletcher Nov 2006

Linking Bacterioplankton Community Structures To Environmental State Variables And Phytoplankton Assemblages In Two South Carolina Salt Marsh Estuaries, Wes Johnson, Alan J. Lewitus, Madilyn Fletcher

Faculty Publications

Microorganisms are among the most important organisms to the ecology of salt marsh estuaries; however, fundamental questions regarding their distribution, environmental controls, and interactions with phytoplankton remain unanswered. We used denaturing gradient gel electrophoresis (DGGE) of bacterial rRNA genes and high performance liquid chromatography (HPLC) of phytoplankton photopigments to characterize planktonic communities from the Ashepoo, Combahee, and Edisto (ACE) Basin and North Inlet (NI) estuaries on the South Carolina coast, USA. Multivariate comparisons of the planktonic community profiles revealed that the 2 estuaries supported distinct bacterial communities. Furthermore, bacterial communities in both systems were partitioned into separate particle-associated (PA) and …

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African-American Mitochondrial Dnas Often Match Mtdnas Found In Multiple African Ethnic Groups, Bert Ely, Jamie Lee Wilson, Fatimah Jackson, Bruce A. Jackson Oct 2006

African-American Mitochondrial Dnas Often Match Mtdnas Found In Multiple African Ethnic Groups, Bert Ely, Jamie Lee Wilson, Fatimah Jackson, Bruce A. Jackson

Faculty Publications

Mitochondrial DNA (mtDNA) haplotypes have become popular tools for tracing maternal ancestry, and several companies offer this service to the general public. Numerous studies have demonstrated that human mtDNA haplotypes can be used with confidence to identify the continent where the haplotype originated. Ideally, mtDNA haplotypes could also be used to identify a particular country or ethnic group from which the maternal ancestor emanated. However, the geographic distribution of mtDNA haplotypes is greatly influenced by the movement of both individuals and population groups. Consequently, common mtDNA haplotypes are shared among multiple ethnic groups. We have studied the distribution of mtDNA …

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Interaction Of Ice Storms And Management Practices On Current Carbon Sequestration In Forests With Potential Mitigation Under Future Co2 Atmosphere, Heather R. Mccarthy, Ram Oren, Hyun-Seok Kim, Kurt H. Johnsen, Chris Maier, Seth G. Pritchard, Micheal Davis Aug 2006

Interaction Of Ice Storms And Management Practices On Current Carbon Sequestration In Forests With Potential Mitigation Under Future Co2 Atmosphere, Heather R. Mccarthy, Ram Oren, Hyun-Seok Kim, Kurt H. Johnsen, Chris Maier, Seth G. Pritchard, Micheal Davis

Faculty Publications

[1] Ice storms are disturbance events with potential impacts on carbon sequestration. Common forest management practices, such as fertilization and thinning, can change wood and stand properties and thus may change vulnerability to ice storm damage. At the same time, increasing atmospheric CO2 levels may also influence ice storm vulnerability. Here we show that a nonintensively managed pine plantation experienced a ∼250 g C m−2 reduction in living biomass during a single storm, equivalent to ∼30% of the annual net ecosystem carbon exchange of this ecosystem. Drawing on weather and damage survey data from the entire storm cell, …

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Ecological Fitting As A Determinant Of The Community Structure Of Platyhelminth Parasites Of Anurans, Daniel R. Brooks, Virginia León-Règagnon, Deborah Mclennan, Derek Zelmer Jul 2006

Ecological Fitting As A Determinant Of The Community Structure Of Platyhelminth Parasites Of Anurans, Daniel R. Brooks, Virginia León-Règagnon, Deborah Mclennan, Derek Zelmer

Faculty Publications

Host–parasite associations are assumed to be ecologically specialized, tightly coevolved systems driven by mutual modification in which host switching is a rare phenomenon. Ecological fitting, however, increases the probability of host switching, creating incongruences between host and parasite phylogenies, when (1) specialization on a particular host resource is a shared characteristic of distantly related parasites, and (2) the resource being tracked by the parasite is widespread among many host species. We investigated the effect of ecological fitting on structuring the platyhelminth communities of anurans from a temperate forest and grassland in the United States and tropical dry and wet forests …

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Aintegumenta Contributes To Organ Polarity And Regulates Growth Of Lateral Organs In Combination With Yabby Genes, Staci Nole-Wilson, Beth A. Krizek Jul 2006

Aintegumenta Contributes To Organ Polarity And Regulates Growth Of Lateral Organs In Combination With Yabby Genes, Staci Nole-Wilson, Beth A. Krizek

Faculty Publications

Lateral organs in flowering plants display polarity along their adaxial-abaxial axis with distinct cell types forming at different positions along this axis. Members of three classes of transcription factors in Arabidopsis (Arabidopsis thaliana; the Class III homeodomain/leucine zipper [HD-ZIP] proteins, KANADI proteins, and YABBY proteins) are expressed in either the adaxial or abaxial domain of organ primordia where they confer these respective identities. Little is known about the factors that act upstream of these polarity-determining genes to regulate their expression. We have investigated the relationship between AINTEGUMENTA (ANT), a gene that promotes initiation and growth of lateral …

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Growth, Feeding And Reproduction Of The Catfish Eremophilus Mutisii (Pisces : Trichomycteridae), From Artificial Reservoirs In Colombia, Gabriel Pinilla, Maritza Abril, Esperanza González Jun 2006

Growth, Feeding And Reproduction Of The Catfish Eremophilus Mutisii (Pisces : Trichomycteridae), From Artificial Reservoirs In Colombia, Gabriel Pinilla, Maritza Abril, Esperanza González

Faculty Publications

The catfish, Eremophilus mutisii, was cultured under different densities in artificial rainfall reservoirs at Caldas, Boyaca, Colombia. At capture, the average total length of the animals was 10 cm and the weight ranged between 9 and 10 g. These fish were in initial stages of sexual development. After a year in the reservoirs, they had increased in length and weight as follows (densities in parentheses): 5.22 cm and 27.23 g (0.5 individuals/m(2))); 1.98 cm and 8.79 g (1 individual/m(2)), and 2.45 cm and 0.82 g (2 individuals/m(2)). They were at the early stages of sexual maturity, and their condition …

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Cytochrome P4501a Is Induced In Endothelial Cell Lines From The Kidney And Lung Of The Bottlenose Dolphin, Tursiops Truncatus, Rita Anne Garrick, Bruce R. Woodin, Joanna Y. Wilson, Bobby L. Middlebrooks, John J. Stegman Mar 2006

Cytochrome P4501a Is Induced In Endothelial Cell Lines From The Kidney And Lung Of The Bottlenose Dolphin, Tursiops Truncatus, Rita Anne Garrick, Bruce R. Woodin, Joanna Y. Wilson, Bobby L. Middlebrooks, John J. Stegman

Faculty Publications

Marine mammals respond to the presence of polycyclic and planar halogenated aromatic hydrocarbons (PAH or PHAH) with the induced expression in endothelium of cytochrome P4501A1, regulated through the aryl hydrocarbon receptor (AHR) transcription factor. Physiological responses in other animals, such as edema and inflammation indicate that the endothelium may be compromised by exposure to AHR agonists, which are ubiquitous in the marine environment. In other mammals and fish the cellular and molecular consequences of exposure to AHR agonists have been elucidated in cultured endothelial cells. We have cultured and characterized cetacean endothelial cells (EC) and used them in induction studies. …

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A Hydrothermal After-Ripening Time Model For Seed Dormancy Loss In Bromus Tectorum L., Phil S. Allen, Necia B. Bair Mar 2006

A Hydrothermal After-Ripening Time Model For Seed Dormancy Loss In Bromus Tectorum L., Phil S. Allen, Necia B. Bair

Faculty Publications

After-ripening, the loss of dormancy under dry conditions, is associated with a decrease in mean base water potential for germination of Bromus tectorum L. seeds. After-ripening rate is a linear function of temperature above a base temperature, so that dormancy loss can be quantified using a thermal after-ripening time (TAR) model. To incorporate storage water potential into TAR, we created a hydrothermal after-ripening time (HTAR) model. Seeds from two B. tectorum populations were stored under controlled temperatures (20 or 30° C) and water potentials (400 to 40MPa). Subsamples were periodically removed from each storage treatment and incubated at 15 or …

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Regulation Of Cytoplasmic Dynein Atpase By Lis1, Mariano T. Mesngon, Cataldo Tarricone, Sachin Hebbar, Aimee Guillotte, E. William Schmitt, Lorene Lanier, Andrea Musacchio, Stephen J. King, Deanna S. Smith Feb 2006

Regulation Of Cytoplasmic Dynein Atpase By Lis1, Mariano T. Mesngon, Cataldo Tarricone, Sachin Hebbar, Aimee Guillotte, E. William Schmitt, Lorene Lanier, Andrea Musacchio, Stephen J. King, Deanna S. Smith

Faculty Publications

Mutations in Lis1 cause classical lissencephaly, a developmental brain abnormality characterized by defects in neuronal positioning.Over the last decade, a clear link has been forged between Lis1 and the microtubule motor cytoplasmic dynein. Substantial evidenceindicates that Lis1 functions in a highly conserved pathway with dynein to regulate neuronal migration and other motile events. Yeasttwo-hybrid studies predict that Lis1 binds directly to dynein heavy chains (Sasaki et al., 2000; Tai et al., 2002), but the mechanistic significance of this interaction is not well understood. We now report that recombinant Lis1 binds to native brain dynein and significantly increases the microtubule-stimulated enzymatic …

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A New Moustache Wasp In Dominican Amber, With An Account Of Apoid Wasp Evolution Emphasizing Crabroninae (Hymenoptera: Crabronidae), Daniel J. Bennett, Michael S. Engel Jan 2006

A New Moustache Wasp In Dominican Amber, With An Account Of Apoid Wasp Evolution Emphasizing Crabroninae (Hymenoptera: Crabronidae), Daniel J. Bennett, Michael S. Engel

Faculty Publications

A new, extinct species of the wasp genus Lindenius (Crabroninae: Crabronini: Crabronina) is described and figured from two exquisitely preserved specimens discovered in Early Miocene Dominican amber. Lindenius paleomystax, new species, represents the first record for the tribe Crabronini in Dominican amber and the southernmost record for the genus in the New World. The unique locality and habitat data begin to reveal a more complicated natural history for the genus than that suggested by Recent taxa alone. A checklist of fossil apoid wasps in amber is provided and the new species is discussed within the context of an overview …

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Nest-Site Selection In The Eastern Box Turtle, Terrapene Carolina Carolina, In Illinois [Abstract], Beth A. Flitz, Stephen J. Mullin Jan 2006

Nest-Site Selection In The Eastern Box Turtle, Terrapene Carolina Carolina, In Illinois [Abstract], Beth A. Flitz, Stephen J. Mullin

Faculty Publications

No abstract provided.

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Food For Early Succession Birds: Relationships Among Arthropods, Shrub Vegetation, And Soil, Richard N. Conner, Daniel Saenz, Brent Burt Jan 2006

Food For Early Succession Birds: Relationships Among Arthropods, Shrub Vegetation, And Soil, Richard N. Conner, Daniel Saenz, Brent Burt

Faculty Publications

During spring and early summer, shrub- and herbaceous-level vegetation provides nesting and foraging habitat for many shrub-habitat birds. We examined relationships among arthropod biomass and abundance, foliage leaf surface area and weight, vegetation ground cover, soil characteristics, relative humidity, and temperature to evaluate what factors may influence arthropod food resources for birds. Relative humidity was inversely associated with arthropod biomass; as humidity increased biomass decreased (r = -0.44, P = 0.004). We failed to detect any relationships between deciduous foliage (surface area and weight) and arthropod biomass or abundance. However, both arthropod abundance (r = 0.30, P = 0.06) and …

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Relationships Among Arthropods, Herbaceous-Shrub Layer Vegetation, And Soil In An Early Succession Pine Stand., Brent Burt, Richard N. Conner, Saenz Daniel Jan 2006

Relationships Among Arthropods, Herbaceous-Shrub Layer Vegetation, And Soil In An Early Succession Pine Stand., Brent Burt, Richard N. Conner, Saenz Daniel

Faculty Publications

During spring and early summer, shrub- and herbaceous-level vegetation provides nesting and foraging habitat for many shrub-habitat birds. We examine relationships among arthropod biomass and abundance, foliage leaf surface area and weight, vegetation ground cover, soil characteristics, relative humidity, and temperature to evaluate what factors may influence arthropod food resources for birds.

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The Rotavirus Enterotoxin Nsp4 Directly Interacts With The Caveolar Structural Protein Caveolin-1, Rebecca D. Parr, Stephen M. Storey, Deanne M. Mitchell, Avery Mcintosh, Minglong Zhou, Kiran D. Mir, Judith M. Ball Jan 2006

The Rotavirus Enterotoxin Nsp4 Directly Interacts With The Caveolar Structural Protein Caveolin-1, Rebecca D. Parr, Stephen M. Storey, Deanne M. Mitchell, Avery Mcintosh, Minglong Zhou, Kiran D. Mir, Judith M. Ball

Faculty Publications

Rotavirus nonstructural protein 4 (NSP4) is known to function as an intracellular receptor at the endoplasmic reticulum (ER) critical to viral morphogenesis and is the first characterized viral enterotoxin. Exogenously added NSP4 induces diarrhea in rodent pups and stimulates secretory chloride currents across intestinal segments as measured in Ussing chambers. Circular dichroism studies further reveal that intact NSP4 and the enterotoxic peptide (NSP4114-135) that is located within the extended, C-terminal amphipathic helix preferentially interact with caveola-like model membranes. We now show colocalization of NSP4 and caveolin-1 in NSP4-transfected and rotavirus-infected mammalian cells in reticular structures surrounding the nucleus …

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Allostasis, Homeostasis, And The Costs Of Physiological Adaptation, Sarah C. Coste Jan 2006

Allostasis, Homeostasis, And The Costs Of Physiological Adaptation, Sarah C. Coste

Faculty Publications

Sarah Coste reviews Allostasis, Homeostasis, and the Costs of Physiological Adaptation (edited by Jay Schulkin) for the Quarterly Review of Biology.

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