129 results match your criteria: "The Ohio State University Ohio Agricultural Research and Development Center[Affiliation]"
Poult Sci
September 2008
Department of Animal Sciences, The Ohio State University/Ohio Agricultural Research and Development Center, Wooster 44691, USA.
The membrane-associated heparan sulfate proteoglycan families, consisting of the syndecans and glypicans, are low-affinity receptors for fibroblast growth factor 2 (FGF2) that are essential in regulating the cellular response to FGF2. Fibroblast growth factor 2 is a potent stimulator of skeletal muscle cell proliferation and a strong inhibitor of differentiation. The regulation of the expression of the syndecans and glypicans will likely play a role in modulating the effects of FGF2 on cellular growth properties.
View Article and Find Full Text PDFPlant Mol Biol
July 2008
Department of Horticulture and Crop Science, The Ohio State University/Ohio Agricultural Research and Development Center, Wooster, OH 44691, USA.
Plant Physiol
March 2008
Department of Horticulture and Crop Science, The Ohio State University/Ohio Agricultural Research and Development Center, Wooster, OH 44691, USA.
In Arabidopsis (Arabidopsis thaliana) the low-temperature induction of genes encoding the C-REPEAT BINDING FACTOR (CBF) transcriptional activators is a key step in cold acclimation. CBFs in turn activate a battery of downstream genes known as the CBF regulon, which collectively act to increase tolerance to low temperatures. Fundamental questions are: What determines the size and scope of the CBF regulon, and is this is a major determinant of the low-temperature tolerance capacity of individual plant species? Here we have begun to address these questions through comparative analyses of Medicago truncatula and Medicago sativa subsp.
View Article and Find Full Text PDFBiol Reprod
April 2008
Department of Animal Sciences, The Ohio State University/Ohio Agricultural Research and Development Center, Wooster, Ohio 44691, USA.
The corpus luteum (CL) produces oxytocin (OXT), which has been proposed to regulate the pulsatile release of prostaglandin F2alpha during luteolysis in ruminants. This action of OXT is mediated via oxytocin receptors (OXTRs) present on uterine epithelial cells. It is hypothesized that luteal OXT acts as a paracrine regulator of resident immune cells.
View Article and Find Full Text PDFNew Phytol
May 2008
Department of Plant Pathology, The Ohio State University, 201 Kottman Hall, 2021 Coffey Road, Columbus, OH 43210, USA; Departments of.
The mechanisms and conditions affecting expression of systemic induced resistance (SIR) in pine are not clearly understood. Two hypotheses were tested here: that SIR against a pathogen induced by either a pathogen or an insect involves coordinated shifts in phloem secondary metabolism; and that fertility affects the production of these compounds. To test these hypotheses, a tripartite system was used comprising Austrian pine (Pinus nigra) grown under three different fertility regimes, the fungal pathogen Diplodia pinea, and the defoliator Neodiprion sertifer.
View Article and Find Full Text PDFPlant Dis
December 2007
Department of Plant Pathology, The Ohio State University/OARDC, Wooster.
Sensitivities of 89 isolates of Phytophthora cactorum, the causal agent of crown rot and leather rot on strawberry plants, from seven states (Florida, Maine, North Carolina, Ohio, Oregon, South Carolina, and New York) to the QoI fungicide azoxystrobin were determined based on mycelium growth and zoospore germination. Radial growth of mycelia on lima bean agar amended with azoxystrobin at 0.001, 0.
View Article and Find Full Text PDFNew Phytol
February 2008
Department of Ecology, Swedish University of Agricultural Sciences, Box 7044, SE-750 07 Uppsala, Sweden.
Here, the growth-differentiation balance hypothesis (GDBH) was tested by quantifying temporal variation in the relative growth rate (RGR), net assimilation rate (NAR), and phenylpropanoid concentrations of two willow species (Salix sericea and Salix eriocephala) across five fertility levels. Initially, RGR increased and total phenylpropanoids declined (although every individual phenolic did not) as fertility increased, but NAR was unaffected. Subsequently, NAR and phenylpropanoids declined in the low fertility treatment, generating a quadratic response of secondary metabolism across the nutrient gradient.
View Article and Find Full Text PDFPlant Physiol
December 2007
Department of Plant Pathology, The Ohio State University/Ohio Agricultural Research and Development Center, Wooster, Ohio 44691, USA.
Transient expression is a rapid, useful approach for producing proteins of interest in plants. Tobacco mosaic virus (TMV)-based transient expression vectors can express very high levels of foreign proteins in plants. However, TMV vectors are, in general, not efficiently delivered to plant cells by agroinfection.
View Article and Find Full Text PDFBiol Reprod
December 2007
Department of Animal Sciences, The Ohio State University/Ohio Agricultural Research and Development Center, Wooster, Ohio 44691, USA.
Luteal cells are potent activators of T cell proliferation in vitro. The purpose of this study was to determine which subset of T cells is stimulated by luteal cells and whether luteal cell-induced T cell activation elicits a proinflammatory or anti-inflammatory T cell response. The first objective was to determine if luteal cell-stimulated T cell proliferation was mediated by class I or II major histocompatibility complex (MHC) molecules.
View Article and Find Full Text PDFReprod Biol Endocrinol
January 2007
Department of Animal Sciences, The Ohio State University/Ohio Agricultural Research and Development Center, Wooster, Ohio 44691, USA.
Background: Bovine luteal parenchymal cells express class II major histocompatibility complex (MHC) molecules and stimulate class II MHC-dependent activation of T cells in vitro. The ability of a class II MHC-expressing cell type to elicit a response from T cells in vivo is also dependent on expression of costimulatory molecules by the antigen presenting cell and delivery of a costimulatory signal to the T cell. Whether bovine luteal parenchymal cells express costimulatory molecules and can deliver the costimulatory signal is currently unknown.
View Article and Find Full Text PDFPlant Physiol
May 2006
Department of Horticulture and Crop Science, The Ohio State University/Ohio Agricultural Research and Development Center, Wooster, Ohio 44691, USA.
The domestication and improvement of fruit-bearing crops resulted in a large diversity of fruit form. To facilitate consistent terminology pertaining to shape, a controlled vocabulary focusing specifically on fruit shape traits was developed. Mathematical equations were established for the attributes so that objective, quantitative measurements of fruit shape could be conducted.
View Article and Find Full Text PDFReproduction
April 2006
Department of Animal Sciences, The Ohio State University/Ohio Agricultural Research and Development Center, 1680 Madison Avenue, Wooster, Ohio 44691, USA.
Luteal cells express class II major histocompatibility complex (MHC) molecules and can stimulate T lymphocyte proliferation in vitro. However, it is unknown whether luteal cells express the intracellular components necessary to process the peptides presented by class II MHC molecules. The objective of the present study was to examine the expression and regulation of three major class II-associated antigen processing components--class II MHC-associated invariant chain (Ii), DMalpha and DMbeta--in luteal tissue.
View Article and Find Full Text PDFBiol Reprod
March 2006
Department of Animal Sciences, The Ohio State University/Ohio Agricultural Research and Development Center, Wooster, Ohio 44691, USA.
Interferon-gamma (IFNG) induces apoptotic cell death in bovine luteal cells, but the pathway(s) involved in this process are not well defined. Evidence supporting the involvement of an IFNG-inducible enzymatic pathway that degrades tryptophan in IFNG-induced death of bovine luteal cells is presented in this study. The IFNG-inducible enzyme indoleamine 2,3-dioxygenase (INDO) catalyzes the first step in a metabolic pathway that degrades tryptophan.
View Article and Find Full Text PDFJ Chem Ecol
November 2005
Department of Entomology, The Ohio State University/Ohio Agricultural Research and Development Center, 1680 Madison Avenue, Wooster, OH 44691, USA.
The growth-differentiation balance hypothesis (GDBH) postulates that variation in resource availability can increase or decrease allocation to secondary metabolism, depending on how growth is affected relative to carbon assimilation. Growth and leaf area of black poplar (Populus nigra) increased substantially in response to increased nutrient availability, while net assimilation rate and photosynthesis were less strongly affected. In response, total phenolic glycoside concentrations declined, which is consistent with GDBH.
View Article and Find Full Text PDFJ Virol
May 2005
Department of Entomology, The Ohio State University-Ohio Agricultural Research and Development Center (OARDC), 1680 Madison Ave., Wooster, OH 44691, USA.
The genome of the nucleorhabdovirus maize fine streak virus (MFSV) consists of 13,782 nucleotides of nonsegmented, negative-sense, single-stranded RNA. The antigenomic strand consisted of seven open reading frames (ORFs), and transcripts of all ORFs were detected in infected plants. ORF1, ORF6, and ORF7 had significant similarities to the nucleocapsid protein (N), glycoprotein (G), and polymerase (L) genes of other rhabdoviruses, respectively, whereas the ORF2, ORF3, ORF4, and ORF5 proteins had no significant similarities.
View Article and Find Full Text PDFJ Dairy Sci
February 2005
Department of Animal Sciences, The Ohio State University Ohio Agricultural Research and Development Center, Wooster 44691, USA.
The effects of using a water-soluble adjuvant or an emulsified oil-based adjuvant on the safety, antibody titer, and clinical responses of an Escherichia coli J5 bacterin were tested in an experimental infection trial. Fifty-one cows were assigned to 17 blocks of 3. Two cows within each block of 3 were vaccinated with a commercially prepared E.
View Article and Find Full Text PDFGene
July 2004
Department of Entomology, The Ohio State University-Ohio Agricultural Research and Development Center, 1680 Madison Avenue, Wooster, OH 44691, USA.
Four traE homologs, designated traE1, traE2, traE3 and traE4, were identified and amplified from the genome of the leafhopper-transmitted corn stunt pathogen Spiroplasma kunkelii and were predicted to encode membrane-bound adenine tri-phosphatases (ATPases). Deduced proteins of all traE genes have 62.3% to 89.
View Article and Find Full Text PDFDev Growth Differ
February 2004
Department of Animal Sciences, The Ohio State University/Ohio Agricultural Research and Development Center, Wooster, OH, USA.
Heparan sulfate proteoglycans, syndecan-1 and glypican, are low-affinity receptors for fibroblast growth factor 2 (FGF2). Since FGF2 stimulates skeletal muscle cell proliferation but inhibits differentiation, differences in syndecan-1 and glypican expression might affect muscle development and growth by changing the intensity of FGF2 signaling. In the present study, the pectoralis major muscle from 14 to 24-day-old-embryos, and from 1 to 16-week-old birds from a turkey line (F) selected for increased 16-week bodyweight and its genetic control line (RBC2), were used to address how syndecan-1 and glypican are expressed during skeletal muscle formation.
View Article and Find Full Text PDFReprod Biol Endocrinol
November 2003
Department of Animal Sciences, The Ohio State University/Ohio Agricultural Research and Development Center, 1680 Madison Avenue, Wooster, OH 44691, USA.
Biol Reprod
August 2003
Department of Animal Sciences, The Ohio State University/Ohio Agricultural Research and Development Center, Wooster, Ohio 44691, USA.
Bovine luteal cells express class I and II major histocompatibility complex molecules and stimulate T lymphocyte proliferation in vitro. Proliferation of T lymphocytes is greater in cocultures of luteal cells and T lymphocytes collected following administration of a luteolytic dose of prostaglandin (PG) F2alpha to the cow. Whether this results from changes in luteal cells that increase their ability to stimulate T lymphocyte proliferation or from changes in T lymphocytes that enhance their ability to respond to luteal cells is unclear.
View Article and Find Full Text PDFPoult Sci
November 2002
Department of Animal Sciences, The Ohio State University/Ohio Agricultural Research and Development Center, Wooster, Ohio, USA.
Heparan sulfate proteoglycans (HSPG) are a group of extracellular matrix molecules that link skeletal muscle cells to their extrinsic environment. To investigate if HSPG expression is affected by muscle growth and gender, a turkey line (F) selected for increased 16-wk BW and its unselected random-bred control line, RBC2, were used in the present study. Heparan sulfate (HS) and HSPG levels were measured in embryonic and posthatch pectoralis major muscle.
View Article and Find Full Text PDFJ Virol
October 2002
The Ohio State University-Ohio Agricultural Research and Development Center, Food Animal Health Research Program, 1680 Madison Avenue, Wooster, OH 44691, USA.
Bovine enteric caliciviruses (BEC) are associated with diarrhea in young calves. The BEC strains detected in Europe form a third genogroup within the genus "Norwalk-like viruses" (NLV) of the family Caliciviridae. In this report, we present sequence, clinical, and histological data characterizing a novel enteropathogenic BEC strain, NB, detected in fecal specimens from calves in the United States.
View Article and Find Full Text PDFDev Growth Differ
April 1999
Department of Animal Sciences, The Ohio State University/Ohio Agricultural Research and Development Center, Wooster, USA.
Myogenic satellite cells are essential for postnatal muscle growth and the regeneration of muscle in response to injury. An understanding of how the extracellular matrix affects satellite cell activity, and the temporal and spatial expression of extracellular matrix macromolecules is largely unknown. In the avian genetic muscle weakness, low score normal (LSN), satellite cell proliferation and differentiation rates are significantly lower than that observed in normal chicken satellite cells, which may be attributed to a late embryonic increase in the expression of decorin.
View Article and Find Full Text PDFPlant Physiol
March 1995
Department of Horticulture and Crop Science, The Ohio State University/Ohio Agricultural Research and Development Center, Wooster, Ohio 44691-4096 (J.G.S., S.O.S.).
A polysaccharide produced by Bradyrhizobium japonicum bacteroids in nodules (NPS) on soybean (Glycine max [L.] Merr.) roots is different in composition and structure from the extracellular polysaccharide produced in culture by this organism.
View Article and Find Full Text PDFAppl Environ Microbiol
December 1993
Department of Plant Pathology, The Ohio State University Ohio Agricultural Research and Development Center, Wooster, Ohio 44691.
Rhizosphere bacteria were isolated from root tip segments of cucumber seedlings grown in a suppressive, slightly decomposed light-colored peat mix, a conducive, more decomposed dark-colored peat mix, and a suppressive dark peat mix amended with composted hardwood bark. The bacteria were identified by a gas chromatographic fatty acid methyl ester analysis. The total number of taxa recovered from a single root tip segment ranged from 9 to 18.
View Article and Find Full Text PDF