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Articles 1 - 30 of 34
Full-Text Articles in Life Sciences
Late Embryogenesis Abundant Proteins Protect Human Hepatoma Cells During Acute Desiccation, Shumin Li, Nilay Chakraborty, Apurva Borcar, Michael A. Menze, Mehmet Toner, Steven C. Hand
Late Embryogenesis Abundant Proteins Protect Human Hepatoma Cells During Acute Desiccation, Shumin Li, Nilay Chakraborty, Apurva Borcar, Michael A. Menze, Mehmet Toner, Steven C. Hand
Faculty Research & Creative Activity
Expression of late embryogenesis abundant (LEA) proteins is highly correlated with desiccation tolerance in anhydrobiotic animals, selected land plants, and bacteria. Genes encoding two LEA proteins, one localized to the cytoplasm/nucleus (AfrLEA2) and one targeted to mitochondria (AfrLEA3m), were stably transfected into human HepG2 cells. A trehalose transporterwas used for intracellular loading of this disaccharide. Cellswere rapidly and uniformly desiccated to low water content (<0.12 g H2O/g dry weight) with a recently developed spin-drying technique. Immediately on rehydration, control cells without LEA proteins or trehalose exhibited 0% membrane integrity, comparedwith 98% in cells loaded with trehalose and expressing AfrLEA2 or AfrLEA3m; surprisingly, AfrLEA3m without trehalose conferred 94% protection. Cell proliferation across 7 d showed an 18-fold increase for cells dried with AfrLEA3m and trehalose, compared with 27-fold for nondried controls. LEA proteins dramatically enhance desiccation tolerance in mammalian cells and offer the opportunity for engineering biostability in the dried state.
Metabolic Preconditioning Of Mammalian Cells: Mimetic Agents For Hypoxia Lack Fidelity In Promoting Phosphorylation Of Pyruvate Dehydrogenase, Apurva Borcar, Michael A. Menze, Mehmet Toner, Steven C. Hand
Metabolic Preconditioning Of Mammalian Cells: Mimetic Agents For Hypoxia Lack Fidelity In Promoting Phosphorylation Of Pyruvate Dehydrogenase, Apurva Borcar, Michael A. Menze, Mehmet Toner, Steven C. Hand
Faculty Research & Creative Activity
Induction of HIF-1α by oxygen limitation promotes increased phosphorylation and catalytic depression of mitochondrial pyruvate dehydrogenase (PDH) and an enhanced glycolytic poise in cells. Cobalt chloride and desferrioxamine are widely used as mimics for hypoxia because they increase the levels of HIF-1α. We evaluated the ability of these agents to elicit selected physiological responses to hypoxia as a means to metabolically precondition mammalian cells, but without the detrimental effects of hypoxia. We show that, while CoCl2 does increase HIF-1α in a dose-dependent manner, it unexpectedly and strikingly decreases PDH phosphorylation at E1α sites 1, 2, and 3 (Ser293, Ser300, and …
Intracellular Expression Of An Ice Nucleation Protein Reduces Cryoinjury In Insect Cells, Avril M. Harder
Intracellular Expression Of An Ice Nucleation Protein Reduces Cryoinjury In Insect Cells, Avril M. Harder
Student Honors Theses
Exposure of insect cells to subzero temperatures typically leads to cell membrane disruption and lethal intracellular ice formation. This study seeks to examine the cryoprotective value of trangenically expressing a bacterial ice nucleation protein (INP) in Spodoptera frugiperda (Sf-21) cells. The bacterium Pseudomonas syringae naturally produces a membrane-bound INP (inaZ), capable of structuring water and initiating ice formation at temperatures as high as -2 °C. I hypothesized that intracellular expression of an altered form of inaZ (PsINP) in Sf-21 cells will mediate highly regulated ice nucleation when cells are cooled to -80 °C in a slow, controlled manner, …
Long-Term Effects Of Estradiol Replacement In The Olfactory System, Britto P. Nathan, Michael Tonsor, Robert G. Struble
Long-Term Effects Of Estradiol Replacement In The Olfactory System, Britto P. Nathan, Michael Tonsor, Robert G. Struble
Faculty Research & Creative Activity
Olfactory dysfunction often precedes other clinical symptoms in chronic neurodegenerative diseases like Alzheimer’s and Parkinson’s disease. Estrogen deficiency and apoE genotype are known risk factors in these diseases and these factors also affect olfaction. Therefore we examined the effects of estradiol replacement following ovariectomy on expression of apoE and markers of cell proliferation, neuronal maturation, synaptogenesis and reactive gliosis in the primary olfactory pathway of wild-type (WT) and apoE knockout (KO) mice. Estradiol replacement increased apoE staining in the olfactory nerve and glomerular layers. Estradiol increased astrocyte density and olfactory epithelium (OE) thickness regardless of the genotype. In addition estradiol …
Long-Term Effects Of Estradiol Replacement In The Olfactory System, Britto Nathan, Michael Tonsor, Robert Struble
Long-Term Effects Of Estradiol Replacement In The Olfactory System, Britto Nathan, Michael Tonsor, Robert Struble
Faculty Research & Creative Activity
Olfactory dysfunction often precedes other clinical symptoms in chronic neurodegenerative diseases like Alzheimer’s and Parkinson’s disease. Estrogen deficiency and apoE genotype are known risk factors in these diseases and these factors also affect olfaction. Therefore we examined the effects of estradiol replacement following ovariectomy on expression of apoE and markers of cell proliferation, neuronal maturation, synaptogenesis and reactive gliosis in the primary olfactory pathway of wild-type (WT) and apoE knockout (KO) mice. Estradiol replacement increased apoE staining in the olfactory nerve and glomerular layers. Estradiol increased astrocyte density and olfactory epithelium (OE) thickness regardless of the genotype. In addition estradiol …
Long-Term Survival Of Anoxia Despite Rapid Atp Decline In Embryos Of The Annual Killifish Austrofundulus Limnaeus, Jason E. Podrabsky, Michael A. Menze, Steven C. Hand
Long-Term Survival Of Anoxia Despite Rapid Atp Decline In Embryos Of The Annual Killifish Austrofundulus Limnaeus, Jason E. Podrabsky, Michael A. Menze, Steven C. Hand
Faculty Research & Creative Activity
Embryos of the annual killifish Austrofundulus limnaeus can survive for months in the complete absence of oxygen. Survival of anoxia is associated with entry into a state of metabolic dormancy known as diapause. However, extreme tolerance of anoxia is retained for several days of post-diapause development. Rates of heat dissipation in diapause II and 4 days post-diapause II embryos were measured under aerobic conditions and during the transition into anoxia. Phosphorylated adenylate compounds were quantified in embryos during entry into anoxia and after 12 hr of aerobic recovery. Rates of heat dissipation were not affected by exposure to anoxia in …
A New Species Of Saphonecrus (Hymenoptera, Cynipoidea) Associated With Plant Galls On Castanopsis (Fagaceae) In China, Zhiwei Liu, Xiao-Hui Yang, Dao-Hong Zhu, Yi-Yuan He
A New Species Of Saphonecrus (Hymenoptera, Cynipoidea) Associated With Plant Galls On Castanopsis (Fagaceae) In China, Zhiwei Liu, Xiao-Hui Yang, Dao-Hong Zhu, Yi-Yuan He
Faculty Research & Creative Activity
A new cynipid species, Saphonecrus hupingshanensis Liu, Yang, et Zhu, sp. nov. (Hymenoptera: Cynipidae: Synergini), is described from China. This is the first species of the inquilinous tribe Synergini ever known to have an association with chinquapins (Fagaceae: Castanopsis). The biology and implication to species diversity of Cynipidae in eastern and southeast Asia are discussed.
A New Species Of Saphonecrus (Hymenoptera, Cynipoidea) Associated With Plant Galls On Castanopsis (Fagaceae) In China, Zhiwei Liu, Xiao-Hui Yang, Dao-Hong Zhu, Yi-Yuan He
A New Species Of Saphonecrus (Hymenoptera, Cynipoidea) Associated With Plant Galls On Castanopsis (Fagaceae) In China, Zhiwei Liu, Xiao-Hui Yang, Dao-Hong Zhu, Yi-Yuan He
Faculty Research & Creative Activity
A new cynipid species, Saphonecrus hupingshanensis Liu, Yang, et Zhu, sp. nov. (Hymenoptera: Cynipidae: Synergini), is described from China. This is the first species of the inquilinous tribe Synergini ever known to have an association with chinquapins (Fagaceae: Castanopsis). The biology and implication to species diversity of Cynipidae in eastern and southeast Asia are discussed.
Comparing Thigh Muscle Cross-Sectional Area And Squat Strength Among National Class Olympic Weightlifters, Power Lifters, And Bodybuilders, James J. Di Naso, Brian L. Pritschet, John D. Emmett, Jill W. Owen, Jeffrey Willardson, Travis W. Beck, Jason M. Defreitas, Fabio E. Fontana
Comparing Thigh Muscle Cross-Sectional Area And Squat Strength Among National Class Olympic Weightlifters, Power Lifters, And Bodybuilders, James J. Di Naso, Brian L. Pritschet, John D. Emmett, Jill W. Owen, Jeffrey Willardson, Travis W. Beck, Jason M. Defreitas, Fabio E. Fontana
Faculty Research and Creative Activity
Few studies have compared anthropometric characteristics among national class athletes from different resistance training disciplines, such as Olympic Weightlifting (OL), Power Lifting (PL), and Bodybuilding (BB). Objective: The purpose of the current study was to determine if significant differences exist in the relationship between thigh muscle cross-sectional area and back squat strength among national class athletes from the sports of OL, PL, and BB. Methods: Fifteen national class athletes were assessed for back squat strength, mid-thigh circumference, and mid-thigh skinfold from which total thigh cross-sectional was estimated. A series of One-Way ANOVAs and Pearson Product Moment Correlations were used to …
Genome Wide Analysis Of Hepatic Gene Silencing In Mammalian Cell Variants, Jeffrey L. Kurkewich
Genome Wide Analysis Of Hepatic Gene Silencing In Mammalian Cell Variants, Jeffrey L. Kurkewich
Undergraduate Honors Theses
Using microarray data, a genome wide analysis of hepatic gene-silencing in four hepatoma variant cell lines was carried out. The purpose of this analysis was to identify candidate genes that may be able to restore liver function in non-functional cell variants, ultimately giving insight into the mechanisms behind global hepatic gene expression. Based on a selection scheme allowing only for genes activated or repressed at least 5 fold in 2 out of the 4 variant cell lines, 225 genes were found to be repressed while a total of 76 genes were found to be activated. Of the repressed genes identified, …
Effects Of Hot Water On Breaking Seed Dormancy Of The Endangered Kankakee Mallow (Iliamna Remota Greene (Malvaceae), April Mcdonnell, Marissa Grant, Janice M. Coons
Effects Of Hot Water On Breaking Seed Dormancy Of The Endangered Kankakee Mallow (Iliamna Remota Greene (Malvaceae), April Mcdonnell, Marissa Grant, Janice M. Coons
Faculty Research & Creative Activity
Iliamna remota Greene (Kankakee mallow, Malvaceae) is listed as endangered in Illinois and is endemic to Langham Island in the Kankakee River, Kankakee County, Illinois. Information on ways to break seed dormancy of I. remota would be useful for restoration and management. The purpose of this study was to determine if hot water at different temperatures and for different lengths of time would break seed dormancy. Seeds were dipped for 60 seconds into water at 70, 80, 90 or 100 degrees C with 22 degrees C dips as a control. In another trial, seeds were dipped into 80 degrees C …
Trehalose Transporter From African Chironomid Larvae Improves Desiccation Tolerance Of Chinese Hamster Ovary Cells, Nilay Chakraborty, Michael A. Menze, Heidi Elmoazzen, Halong Vu, Martin Yarmush, Steven C. Hand, Mehmet Toner
Trehalose Transporter From African Chironomid Larvae Improves Desiccation Tolerance Of Chinese Hamster Ovary Cells, Nilay Chakraborty, Michael A. Menze, Heidi Elmoazzen, Halong Vu, Martin Yarmush, Steven C. Hand, Mehmet Toner
Faculty Research & Creative Activity
Dry preservation has been explored as an energy-efficient alternative to cryopreservation, but the high sensitivity of mammalian cells to desiccation stress has been one of the major hurdles in storing cells in the desiccated state. An important strategy to reduce desiccation sensitivity involves use of the disaccharide trehalose. Trehalose is known to improve desiccation tolerance in mammalian cells when present on both sides of the cell membrane. Because trehalose is membrane impermeant the development of desiccation strategies involving this promising sugar is hindered. We explored the potential of using a high-capacity trehalose transporter (TRET1) from the African chironomid Polypedilum vanderplanki[21] …
Using Comparative Genomics For Inquiry-Based Learning To Dissect Virulence Of Escherichia Coli O157:H7 And Yersinia Pestis, David J. Baumler, Lois M. Banta, Kai F. Hung, Jodi A. Schwarz, Eric L. Cabot, Jeremy D. Glasner, Nicole T. Perna
Using Comparative Genomics For Inquiry-Based Learning To Dissect Virulence Of Escherichia Coli O157:H7 And Yersinia Pestis, David J. Baumler, Lois M. Banta, Kai F. Hung, Jodi A. Schwarz, Eric L. Cabot, Jeremy D. Glasner, Nicole T. Perna
Faculty Research & Creative Activity
Genomics and bioinformatics are topics of increasing interest in undergraduate biological science curricula. Many existing exercises focus on gene annotation and analysis of a single genome. In this paper, we present two educational modules designed to enable students to learn and apply fundamental concepts in comparative genomics using examples related to bacterial pathogenesis. Students first examine alignments of genomes of Escherichia coli O157:H7 strains isolated from three food-poisoning outbreaks using the multiple-genome alignment tool Mauve. Students investigate conservation of virulence factors using the Mauve viewer and by browsing annotations available at the A Systematic Annotation Package for Community Analysis of …
Taxonomic Revision Of True Morels (Morchella) In Canada And The United States, Michael Kuo, Damon Dewsbury, Kerry O'Donnell, M. Carter, John Moore, Stephen Renner, Jean-Marc Moncalvo, Stephen Canfield, Steven Stephenson, Andrew Methven, Thomas Volk
Taxonomic Revision Of True Morels (Morchella) In Canada And The United States, Michael Kuo, Damon Dewsbury, Kerry O'Donnell, M. Carter, John Moore, Stephen Renner, Jean-Marc Moncalvo, Stephen Canfield, Steven Stephenson, Andrew Methven, Thomas Volk
Faculty Research & Creative Activity
Recent molecular phylogenetic studies have revealed the existence of at least 50 species of Morchella worldwide and demonstrated a high degree of continental endemism within the genus. Here we describe 19 phylogenetic species of Morchella from North America, 14 of which are new (M. diminutiva, M. virginiana, M. esculentoides, M. prava, M. cryptica, M. frustrata, M. populiphila, M. sextelata, M. septimelata, M. capitata, M. importuna, M. snyderi, M. brunnea and M. septentrionalis). Existing species names (M. rufobrunnea, M. tomentosa, M. punctipes and M. angusticeps) are applied to four phylogenetic species, and formal description of one species (M. sp. "Mel-8") is …
Taxonomic Revision Of True Morels (Morchella) In Canada And The United States, Michael Kuo, Damon R. Dewsbury, Kerry O'Donnell, M. Carol Carter, John David Moore, Stephen A. Renner, Jean-Marc Moncalvo, Stephen A. Canfield, Steven L. Stephenson, Andrew S. Methven, Thomas J. Volk
Taxonomic Revision Of True Morels (Morchella) In Canada And The United States, Michael Kuo, Damon R. Dewsbury, Kerry O'Donnell, M. Carol Carter, John David Moore, Stephen A. Renner, Jean-Marc Moncalvo, Stephen A. Canfield, Steven L. Stephenson, Andrew S. Methven, Thomas J. Volk
Faculty Research & Creative Activity
Recent molecular phylogenetic studies have revealed the existence of at least 50 species of Morchella worldwide and demonstrated a high degree of continental endemism within the genus. Here we describe 19 phylogenetic species of Morchella from North America, 14 of which are new (M. diminutiva, M. virginiana, M. esculentoides, M. prava, M. cryptica, M. frustrata, M. populiphila, M. sextelata, M. septimelata, M. capitata, M. importuna, M. snyderi, M. brunnea and M. septentrionalis). Existing species names (M. rufobrunnea, M. tomentosa, M. punctipes and M. angusticeps) are applied to four phylogenetic species, and formal description of one species (M. sp. "Mel-8") is …
Effects Of Hot Water On Breaking Seed Dormancy Of The Endangered Kankakee Mallow (Iliamna Remota Greene (Malvaceae), April Mcdonnell, Marissa Grant, Janice Coons
Effects Of Hot Water On Breaking Seed Dormancy Of The Endangered Kankakee Mallow (Iliamna Remota Greene (Malvaceae), April Mcdonnell, Marissa Grant, Janice Coons
Faculty Research & Creative Activity
Iliamna remota Greene (Kankakee mallow, Malvaceae) is listed as endangered in Illinois and is endemic to Langham Island in the Kankakee River, Kankakee County, Illinois. Information on ways to break seed dormancy of I. remota would be useful for restoration and management. The purpose of this study was to determine if hot water at different temperatures and for different lengths of time would break seed dormancy. Seeds were dipped for 60 seconds into water at 70, 80, 90 or 100 degrees C with 22 degrees C dips as a control. In another trial, seeds were dipped into 80 degrees C …
Size Assortment In Mixed-Species Groups Of Juvenile-Phase Striped Parrotfish (Scarus Iserti) In The Bahamas, Paul Switzer, Daniel Quinn
Size Assortment In Mixed-Species Groups Of Juvenile-Phase Striped Parrotfish (Scarus Iserti) In The Bahamas, Paul Switzer, Daniel Quinn
Faculty Research & Creative Activity
Striped parrotfish (Scarus iserti) often form heterospecific groups with other reef fishes. In this study, we examined the species and body size composition of these groups on reefs in The Bahamas. Groups averaged approximately 4 S. iserti and 2 associated species, with surgeonfish (Acanthurus chirurgus and A. bahianus), slippery dick (Halichoeres bivittatus), and bluehead wrasse (Thalassoma bifasciatum) as the most common associates. Fewer groups than expected had only 1 associate; groups with 3 or more associates were more common than expected. Both the S. iserti and associated species tended to be closely sizematched within a group, perhaps due to benefits …
Size Assortment In Mixed-Species Groups Of Juvenile-Phase Striped Parrotfish (Scarus Iserti) In The Bahamas, Paul Switzer, Daniel Quinn
Size Assortment In Mixed-Species Groups Of Juvenile-Phase Striped Parrotfish (Scarus Iserti) In The Bahamas, Paul Switzer, Daniel Quinn
Faculty Research & Creative Activity
Striped parrotfish (Scarus iserti) often form heterospecific groups with other reef fishes. In this study, we examined the species and body size composition of these groups on reefs in The Bahamas. Groups averaged approximately 4 S. iserti and 2 associated species, with surgeonfish (Acanthurus chirurgus and A. bahianus), slippery dick (Halichoeres bivittatus), and bluehead wrasse (Thalassoma bifasciatum) as the most common associates. Fewer groups than expected had only 1 associate; groups with 3 or more associates were more common than expected. Both the S. iserti and associated species tended to be closely sizematched within a group, perhaps due to benefits …
Comparison Of Nutritive Value, Cost, Viscosity And Acceptability Among Developed Oral Nutritional Supplements And Commercially-Prepared Supplements, Melanie Burns, Christa Huxel, Kathleen O'Rourke, Linda Simpson
Comparison Of Nutritive Value, Cost, Viscosity And Acceptability Among Developed Oral Nutritional Supplements And Commercially-Prepared Supplements, Melanie Burns, Christa Huxel, Kathleen O'Rourke, Linda Simpson
Faculty Research & Creative Activity
No abstract provided.
Seed Biology Of Physaria Ludoviciana (Silvery Bladderpod; Brassicaceae ), An Endangered Species In Sand Prairies Of The Midwest, Marissa C. Grant, Ann E. Claerbout, Janice M. Coons, Henry R. Owen
Seed Biology Of Physaria Ludoviciana (Silvery Bladderpod; Brassicaceae ), An Endangered Species In Sand Prairies Of The Midwest, Marissa C. Grant, Ann E. Claerbout, Janice M. Coons, Henry R. Owen
Faculty Research & Creative Activity
Physaria ludoviciana (Nuttal) O'Kane & Al-Shehbaz (silvery bladderpod) is a state endangered species in Illinois, Minnesota and Wisconsin, the eastern edge of its range. Our goal was to investigate its seed biology (production, dispersal, seed bank longevity, afterripening, seed longevity after storage using germination and emergence, and seedling establishment). This information will be useful for conservation efforts of this endangered species. Over a ten-year period, various seed biology parameters were measured. Infructescences were counted to estimate seed production with 110–744 seeds per reproductive plant. Soil samples were collected at various distances to estimate dispersal where seeds dispersed less than a …
Isolation And Characterization Of Galactinol Synthases From Hybrid Poplar, Faride Unda, Thomas Canam, Lindsay Preston, Shawn D. Mansfield
Isolation And Characterization Of Galactinol Synthases From Hybrid Poplar, Faride Unda, Thomas Canam, Lindsay Preston, Shawn D. Mansfield
Faculty Research & Creative Activity
The raffinose family of oligosaccharides (RFOs) serve as transport carbohydrates in the phloem, storage compounds in sink tissues, and putative biological agents to combat both abiotic and biotic stress in several plant species. To investigate further the functional roles of this class of compounds in trees, two cDNAs encoding galactinol synthase (GolS, EC 2.4.1.123), which catalyses the first step in the biosynthesis of RFOs, were identified and cloned from hybrid poplar (Populus alba3grandidentata). Phylogenetic analyses of the Populus GolS isoforms with other known GolS proteins suggested a putative role for these enzymes during biotic or abiotic stress in hybrid poplar. …
Effectiveness And Utility Of Acoustic Recordings For Surveying Tropical Birds, Antonio Celis-Murillo, Jill L. Deppe, Michael P. Ward
Effectiveness And Utility Of Acoustic Recordings For Surveying Tropical Birds, Antonio Celis-Murillo, Jill L. Deppe, Michael P. Ward
Faculty Research & Creative Activity
Although acoustic recordings have recently gained popularity as an alternative to point counts for surveying birds, little is known about the relative performance of the two methods for detecting tropical bird species across multiple vegetation types. During June and July 2008, we collected species detection/nondetection data to compare the performance of a quadraphonic acoustic recording system and point counts for estimating species richness and composition and detection probabilities of 15 rare, moderately common, and common tropical bird species across six structurally distinct vegetation types (coastal dune scrub, mangrove, low-stature deciduous thorn forest, early and late successional medium-stature semievergreen forest, and …
Comparison Of Nutritive Value, Cost, Viscosity And Acceptability Among Developed Oral Nutritional Supplements And Commercially-Prepared Supplements, Melanie Burns, Christa R. Huxel, Kathleen A. O'Rourke, Linda D. Simpson
Comparison Of Nutritive Value, Cost, Viscosity And Acceptability Among Developed Oral Nutritional Supplements And Commercially-Prepared Supplements, Melanie Burns, Christa R. Huxel, Kathleen A. O'Rourke, Linda D. Simpson
Faculty Research & Creative Activity until 2018 (FCS)
No abstract provided.
A Tale Of Two Tournaments: The Red Cross Games And The Early Ncaa-Nit Relationship, Chad R. Carlson
A Tale Of Two Tournaments: The Red Cross Games And The Early Ncaa-Nit Relationship, Chad R. Carlson
Faculty Research and Creative Activity
The purpose of this article is to explore the relationship between the National Invitational Tournament (NIT) and National Collegiate Athletic Association (NCAA). To do so, the author explores the Red Cross War Benefit Games, which pitted the champions of the two tournaments against one another, with the proceeds benefiting the Red Cross. These contests represented the only times the two tournaments or their teams interacted. The author explores the Games’ significance and the manner in which they helped propel the NCAA men’s basketball tournament to preeminent status.
Book Review: National Title: The Unlikely Tale Of The Naib Tournament, Chad R. Carlson
Book Review: National Title: The Unlikely Tale Of The Naib Tournament, Chad R. Carlson
Faculty Research and Creative Activity
No abstract provided.
Acute Effects Of Antagonist Stretching On Jump Height, Torque, And Electromyography Of Agonist Musculature, John B. Sandberg, Dale R. Wagner, Jeffrey Willardson, Gerald Aparecido Smith
Acute Effects Of Antagonist Stretching On Jump Height, Torque, And Electromyography Of Agonist Musculature, John B. Sandberg, Dale R. Wagner, Jeffrey Willardson, Gerald Aparecido Smith
Faculty Research and Creative Activity
Although there has been substantial research on the acute effects of static stretching on subsequent force and power development, the outcome after stretching of the antagonist musculature has not been examined. The purpose of this study was to investigate the effects of static stretching of antagonist musculature on multiple strength and power measures. Sixteen trained men were tested for vertical jump height and isokinetic peak torque production during knee extension at 60°.s (SlowKE) and 300°.s (FastKE). Electromyography was recorded for the vastus lateralis and the biceps femoris muscles during isokinetic knee extension. Subjects performed these tests in a randomized counterbalanced …
Sequencing And Phylogenetic Analysis Of The Wsp Gene Of Wolbachia In Three Geographic Populations Of An Oak Gall Wasp, Andricus Mairei (Hymenoptera: Cynipidae), From Hunan, South China, Xiao-Hui Yang, Dao-Hong Zhu, Zhiwei Liu, Ling Zhao
Sequencing And Phylogenetic Analysis Of The Wsp Gene Of Wolbachia In Three Geographic Populations Of An Oak Gall Wasp, Andricus Mairei (Hymenoptera: Cynipidae), From Hunan, South China, Xiao-Hui Yang, Dao-Hong Zhu, Zhiwei Liu, Ling Zhao
Faculty Research & Creative Activity
To understand the effects of Wolbachia in Andricus mairei Kieffer , an oak gall wasp ( Cynipini, Cynipidae) that forms clusters of up to 30 monothalamous galls in the catkins of Quercus glandulifera var. brevipetiolata Nakai, we examined the presence and infection frequency of Wolbachia in three widely separated geographic populations of A. mairei in Hunan Province, South China, using polymerase chain reaction and sequence determination of the wsp gene of Wolbachia from the three populations. Our survey results showed that Wolbachia infection rates were unusually high in the three test populations : 100% for the male wasps from all …
Isolation And Characterization Of Galactinol Synthases From Hybrid Poplar, Faride Unda, Thomas Canam, Lindsay Preston, Shawn Mansfield
Isolation And Characterization Of Galactinol Synthases From Hybrid Poplar, Faride Unda, Thomas Canam, Lindsay Preston, Shawn Mansfield
Faculty Research & Creative Activity
The raffinose family of oligosaccharides (RFOs) serve as transport carbohydrates in the phloem, storage compounds in sink tissues, and putative biological agents to combat both abiotic and biotic stress in several plant species. To investigate further the functional roles of this class of compounds in trees, two cDNAs encoding galactinol synthase (GolS, EC 2.4.1.123), which catalyses the first step in the biosynthesis of RFOs, were identified and cloned from hybrid poplar (Populus alba3grandidentata). Phylogenetic analyses of the Populus GolS isoforms with other known GolS proteins suggested a putative role for these enzymes during biotic or abiotic stress in hybrid poplar. …
Effectiveness And Utility Of Acoustic Recordings For Surveying Tropical Birds, Antonio Celis-Murillo, Jill Deppe, Michael Ward
Effectiveness And Utility Of Acoustic Recordings For Surveying Tropical Birds, Antonio Celis-Murillo, Jill Deppe, Michael Ward
Faculty Research & Creative Activity
Although acoustic recordings have recently gained popularity as an alternative to point counts for surveying birds, little is known about the relative performance of the two methods for detecting tropical bird species across multiple vegetation types. During June and July 2008, we collected species detection/nondetection data to compare the performance of a quadraphonic acoustic recording system and point counts for estimating species richness and composition and detection probabilities of 15 rare, moderately common, and common tropical bird species across six structurally distinct vegetation types (coastal dune scrub, mangrove, low-stature deciduous thorn forest, early and late successional medium-stature semievergreen forest, and …
Seed Biology Of Physaria Ludoviciana (Silvery Bladderpod; Brassicaceae ), An Endangered Species In Sand Prairies Of The Midwest, Marissa Grant, Ann Claerbout, Janice Coons, Henry Owen
Seed Biology Of Physaria Ludoviciana (Silvery Bladderpod; Brassicaceae ), An Endangered Species In Sand Prairies Of The Midwest, Marissa Grant, Ann Claerbout, Janice Coons, Henry Owen
Faculty Research & Creative Activity
Physaria ludoviciana (Nuttal) O'Kane & Al-Shehbaz (silvery bladderpod) is a state endangered species in Illinois, Minnesota and Wisconsin, the eastern edge of its range. Our goal was to investigate its seed biology (production, dispersal, seed bank longevity, afterripening, seed longevity after storage using germination and emergence, and seedling establishment). This information will be useful for conservation efforts of this endangered species. Over a ten-year period, various seed biology parameters were measured. Infructescences were counted to estimate seed production with 110–744 seeds per reproductive plant. Soil samples were collected at various distances to estimate dispersal where seeds dispersed less than a …