Life Sciences Commons^™

Influence Of Four Salinity Treatments On Growth And Leaf Nutrient Content Of Three Taxodium Genotypes, Lijing Zhou, David Creech

Faculty Publications

No abstract provided.

Influence Of A Modified Pot-In-Pot Production Strategy On Root Temperature And Growth Of Rhododendron × ‘Mrs. G.G. Gerbing’ In Full Sun, Brennan Whitehead, David Creech

Faculty Publications

No abstract provided.

Low Temperature Induces Two Growth-Arrested Stages And Change Of Secondary Metabolites In Bursaphelenchus Xylophilus, L. L. Zhao, W. Wei, David L. Kulhavy, Xing Yao Zhang, Jiang Hua Sun

Faculty Publications

The third-stage dispersal juvenile (JIII) is the stage for survival and dispersal in the winter of the pine wood nematode,

Bursaphelenchus xylophilus. Through investigations at different temperatures, we found two kinds of growth-arrested development, including the adult longevity extension and JIII formation induced by low temperature. They showed similar characters: densely packed lipid droplets and extended longevity. We considered that there were four stages in the formation of growth-arrested stages: induction, growth-arrested pathway, growth-arrested development and cold-tolerance duration. Moreover, at 4◦C there were significant changes in secondary metabolites, which may be related to signal communication and metabolism associated with …

Spatial Ecology Of The Coachwhip, Masticophis Flagellum (Squamata: Colubridae), In Eastern Texas, Richard W. Johnson, Robert R. Fleet, Michael B. Keck, D. Craig Rudolph

Faculty Publications

We radio-tracked nine Masticophis flagellum (Coachwhips) to determine home range, habitat use, and movements in eastern Texas from April to October 2000. Home ranges of Coachwhips contained more oak savanna macrohabitat than early-successional pine plantation or forested seep, based on the availability of these three macrohabitats in the study area. Likewise, within their individual home ranges, Coachwhips used oak savanna more than the other two macrohabitats, based on availability. An analysis of microhabitat use revealed that, relative to random sites within their home range, Coachwhips were found at sites with fewer pine trees and more herbaceous vegetation taller than 30 …

Selection For Salt Tolerance In Tidal Freshwater Swamp Species: Advances Using Bald Cypress As A Model For Restoration (Chapter 14), David Creech

Faculty Publications

No abstract provided.

Red-Cockaded Woodpecker Foraging Behavior, D. Craig Rudolph, Richard N. Conner, Richard R. Schaefer, Nancy E. Koerth

Faculty Publications

We studied Red-cockaded Woodpeckers (Picoides borealis) to examine the effect of status and gender on foraging behavior. Foraging behavior of breeding pairs extended beyond separation by foraging height to include zones (bole, trunk in crown, primary limb, secondary limb) of the tree used and foraging methods (scaling, probing, excavating). Helper males and juvenile females maintained partial spatial separation from breeding adults. Helper males maintained spatial separation from breeding adults by exploiting limbs within tree crowns in both longleaf (Pinus palustris) and loblolly-shortleaf (P. taeda, P. echinata) pine forests, but also increased use of boles in loblolly-shortleaf pine in concert with …

Enzymes As Feed Additive To Aid In Responses Against Eimeria Species In Coccidia-Vaccinated Broilers Fed Corn-Soybean Meal Diets With Different Protein Levels, J. Parker, E. O. Oviedo Rondon, Beatrice A. Clack, S. Clemente-Hernandez, J. Osborne, J. C. Remus, H. Kettunen, H. Makivuokko, E. M. Pierson

Faculty Publications

This research aimed to evaluate the effects of adding a combination of exogenous enzymes to starter diets varying in protein content and fed to broilers vaccinated at day of hatch with live oocysts and then challenged with mixed Eimeria spp. Five hundred four 1-d-old male Cobb-500 chickens were distributed in 72 cages. The design consisted of 12 treatments. Three anticoccidial control programs [ionophore (IO), coccidian vaccine (COV), and coccidia-vaccine + enzymes (COV + EC)] were evaluated under 3 CP levels (19, 21, and 23%), and 3 unmedicated-uninfected (UU) negative controls were included for each one of the protein levels. All …

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 …

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 …

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 …

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.

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 …

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

Faculty Publications

No abstract provided.

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 …

Appropriate Physical Education Service For All Students, Ron French, Lisa Silliman-French, Deborah Buswell

Faculty Publications

All students, including those with disabilities, deserve appropriate, safe, and meaningful physical education instructional programs as identified by Texas Education Agency (2006) and that are reflected in the National Association for Sport and Physical Education (NASPE, 2005) standards.

Perceived Benefits Of Students' Service-Learning Experiences With Hippotherapy, Deborah Buswell, Filitsa Leriou

Faculty Publications

The term hippotherapy has its roots in the Greek language, and is translated as treatment with the help of the horse (Glasow, 2003). Using horseback tiding as a form of natural exercise dates back to Hippocrates (460-377 B.C.). Although therapeutic riding and hippotherapy are both used as forms of treatment for persons with disabilities, they are not synonymous. Hippotherapy is prescribed by a physician and utilizes equine movement as part of a treatment strategy and is used by physical, occupational, and speech therapists "as part of an integrated treatment program to achieve functional outcomes" (American Hippotherapy Association, 2003, What is …