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- Xanthomonas axonopodis pv. glycines (2)
- Allosteric Regulation (Respiratory Pigments) (1)
- Allosteric model (1)
- Ambystoma (1)
- Anhydrobiosis (Life without Water) (1)
Articles 1 - 23 of 23
Full-Text Articles in Life Sciences
Influence Of Reproductive And Environmental Factors On Population Size .. Of Wild Hyacinth [Camassia Angusta (Engelm.· And A. Gray) Blank. (Liliaceae)], An Illinois Endangered Species, Kevin Franken, Janice Coons, Henry Owen, Eric Smith, John Ebinger
Influence Of Reproductive And Environmental Factors On Population Size .. Of Wild Hyacinth [Camassia Angusta (Engelm.· And A. Gray) Blank. (Liliaceae)], An Illinois Endangered Species, Kevin Franken, Janice Coons, Henry Owen, Eric Smith, John Ebinger
Faculty Research & Creative Activity
Wild hyacinth (Camassia angusta) is a perennial species native to mesic prairies of the midwestern and south-central United States. In Illinois, the only extant population of this state-endangered species is in a small section of degraded black-soil prairie along a railroad track right-of-way south of Elwin, Macon County. The objectives of this study were to determine the population status, seed production, and effects of scarification and stratification on germination of C. angusta. The population was surveyed from 1990 to 2007. A survey of other plant species present was conducted in 1999. The site consisted of approximately 75% native and 25% …
Influence Of Reproductive And Environmental Factors On Population Size .. Of Wild Hyacinth [Camassia Angusta (Engelm.· And A. Gray) Blank. (Liliaceae)], An Illinois Endangered Species, Kevin M. Franken, Janice M. Coons, Henry R. Owen, Eric L. Smith, John E. Ebinger
Influence Of Reproductive And Environmental Factors On Population Size .. Of Wild Hyacinth [Camassia Angusta (Engelm.· And A. Gray) Blank. (Liliaceae)], An Illinois Endangered Species, Kevin M. Franken, Janice M. Coons, Henry R. Owen, Eric L. Smith, John E. Ebinger
Faculty Research & Creative Activity
Wild hyacinth (Camassia angusta) is a perennial species native to mesic prairies of the midwestern and south-central United States. In Illinois, the only extant population of this state-endangered species is in a small section of degraded black-soil prairie along a railroad track right-of-way south of Elwin, Macon County. The objectives of this study were to determine the population status, seed production, and effects of scarification and stratification on germination of C. angusta. The population was surveyed from 1990 to 2007. A survey of other plant species present was conducted in 1999. The site consisted of approximately 75% native and 25% …
Comparative Vegetative Anatomy And Systematics Of Laeliinae (Orchidaceae), William Louis Stern, Barbara S. Carlsward
Comparative Vegetative Anatomy And Systematics Of Laeliinae (Orchidaceae), William Louis Stern, Barbara S. Carlsward
Faculty Research & Creative Activity
Laeliinae are one of the most prominent orchid subtribes, with c. 40 genera and nearly 1500 species, and contain a disparate group of taxa with widely varying morphological features. There does not appear to be a complex of characters to which one can refer in order to delineate the subtribe as a whole. Thus, it was thought that vegetative anatomy might provide clues to the monophyly of the group. The microscopic structure of the leaves, stems and roots of representatives of most of the genera was studied. It was concluded that the anatomy lacks overall uniformity and that vegetative characters …
Comparative Vegetative Anatomy And Systematics Of Laeliinae (Orchidaceae), William Stern, Barbara Carlsward
Comparative Vegetative Anatomy And Systematics Of Laeliinae (Orchidaceae), William Stern, Barbara Carlsward
Faculty Research & Creative Activity
Laeliinae are one of the most prominent orchid subtribes, with c. 40 genera and nearly 1500 species, and contain a disparate group of taxa with widely varying morphological features. There does not appear to be a complex of characters to which one can refer in order to delineate the subtribe as a whole. Thus, it was thought that vegetative anatomy might provide clues to the monophyly of the group. The microscopic structure of the leaves, stems and roots of representatives of most of the genera was studied. It was concluded that the anatomy lacks overall uniformity and that vegetative characters …
Thermodynamics Of Effector Binding To Hemocyanin: Influence Of Temperature, Ariane Pott, Michael A. Menze, Manfred K. Grieshaber
Thermodynamics Of Effector Binding To Hemocyanin: Influence Of Temperature, Ariane Pott, Michael A. Menze, Manfred K. Grieshaber
Faculty Research & Creative Activity
Hemocyanins are allosterically regulated oxygen carriers freely dissolved in the blood of many crustaceans. The natural modulator urate accumulates under hypoxic conditions in the hemolymph of Homarus vulgaris, and increases the oxygen affinity of the respiratory pigment. Other non-physiological effectors such as caffeine, dimethylxanthines and methylxanthines are also known to modulate the oxygen-binding properties of hemocyanin. In order to gain insight into the thermodynamic driving forces of these interactions we analyzed the binding of several urate analogs to dodecameric hemocyanin at different temperatures by employing isothermal titration calorimetry (ITC). All investigated non-physiological effectors including caffeine, dimethylxanthines and methylxanthines bind exothermically …
Investigation Of Insect Visits To Flowers Of Stylisma Pickeringii (Patterson Bindweed), An Endangered Plant Of Illinois Sand Prairies, A. E. Claerbout, H. R. Owen, Janice M. Coons, B. L. Todd
Investigation Of Insect Visits To Flowers Of Stylisma Pickeringii (Patterson Bindweed), An Endangered Plant Of Illinois Sand Prairies, A. E. Claerbout, H. R. Owen, Janice M. Coons, B. L. Todd
Faculty Research & Creative Activity
Little is known about the reproductive biology of Stylisma pickeringii var. pattersonii, an endangered plant in Illinois occurring in only three counties (Cass, Henderson, and Mason). The objective of this study was to estimate flower densities and temporal (time of day and seasonal) differences in insect visitation to flowers of S. pickeringii in 2002 for native populations in Henderson and Mason Counties. A 50 m transect was located where S. pickeringii was most abundant and quadrats (0.25 m2) were placed on alternate sides of the tape measure at every meter at random distances from the transect. The number of flowers …
Thermoregulation Of Male Elaphe Spiloides In An Agriculturally-Fragmented Forest In Illinois, C. Drew Foster, Sarabeth Kleuh, Stephen J. Mullin
Thermoregulation Of Male Elaphe Spiloides In An Agriculturally-Fragmented Forest In Illinois, C. Drew Foster, Sarabeth Kleuh, Stephen J. Mullin
Faculty Research & Creative Activity
Anthropogenic forest fragmentation increases the amount of edge habitat. Although edges are harsh environments for many native species, ratsnakes often prefer this habitat. We examined thermoregulatory effectiveness of Central Ratsnakes (Elaphe spiloides) using forest edges preferentially to determine if edge preference is driven by increased thermoregulatory efficiencies. Six male subjects were located every 1-2 days using radio-telemetry and temperature sensitive transmitters. Subjects did not thermoregulate more efficiently in edges than in forest. Snakes were thermoconformers in both habitat types suggesting edge preference might be driven by other factors.
Sucrose Phosphate Synthase Expression Influences Poplar Phenology, Thomas Canam, Ji-Young Park, Kyu-Young Kang, Faride Unda, Shawn D. Mansfield
Sucrose Phosphate Synthase Expression Influences Poplar Phenology, Thomas Canam, Ji-Young Park, Kyu-Young Kang, Faride Unda, Shawn D. Mansfield
Faculty Research & Creative Activity
The objective of this study was to manipulate the intracellular pools of sucrose, and investigate its role in regulating plant growth, phenology (leaf senescence and bud break) and fibre development. This objective was achieved by differentially expressing an Arabidopsis (Arabidopsis thaliana L. Heynh.) sucrose phosphate synthase (SPS) gene in hybrid poplar (Populus alba · Populus grandidentata Michx.), a model system for tree biology with substantial industrial relevance in the context of short rotation forestry and a target bioenergy crop. Phenotypic differences were evident in the transgenic trees, as both the timing of bud flush and leaf senescence were altered compared …
How Do Animal Mitochondria Tolerate Water Stress?, Michael A. Menze, Steven C. Hand
How Do Animal Mitochondria Tolerate Water Stress?, Michael A. Menze, Steven C. Hand
Faculty Research & Creative Activity
The vast majority of animal species do not tolerate severe water stress, but the encysted embryo of the brine shrimp Artemia franciscana is an exceptionally useful organism to investigate physiological mechanisms for enduring extreme environmental insults. Any substantial reduction in cellular water poses a threat to survival. Nevertheless anhydrobiotic animals survive virtually complete loss of cellular water. The mechanisms that govern “life without water” (anhydrobiosis) are still not well understood. With certain exceptions, it seems that a recurring strategy for tolerating severe water loss involves the accumulation of both low molecular weight solutes (e.g. trehalose or other polyol) and highly …
Evaluation Of Glyphosate-Tolerant Soybean Cultivars For Resistance To Bacterial Pustule, Lopa Goradia, Glen Hartman, Steven L. Daniel
Evaluation Of Glyphosate-Tolerant Soybean Cultivars For Resistance To Bacterial Pustule, Lopa Goradia, Glen Hartman, Steven L. Daniel
Faculty Research & Creative Activity
Xanthomonas axonopodis pv. glycines causes bacterial pustule of soybean, which is a common disease in many soybean-growing areas of the world and is controlled by a single recessive gene (rxp gene) commonly found in many conventional glyphosate-sensitive soybean cultivars. Since glyphosate-tolerant cultivars are commonly planted today, there has been no information about whether these new cultivars have bacterial pustule resistance. The goal of this study was to screen glyphosate-tolerant soybean cultivars for resistance to X. axonopodis pv. glycines. Three experiments were completed to evaluate resistance. In experiment 1, 525 commercial glyphosate-tolerant cultivars from 2001 were inoculated with X. axonopodis pv. …
Effect Of Surface Stability On Core Muscle Activity For Dynamic Resistance Exercises, Jeffrey Willardson, Fabio E. Fontana, Eadric Bressel
Effect Of Surface Stability On Core Muscle Activity For Dynamic Resistance Exercises, Jeffrey Willardson, Fabio E. Fontana, Eadric Bressel
Faculty Research and Creative Activity
To compare core muscle activity during resistance exercises performed on stable ground vs. the BOSU Balance Trainer. Methods: Twelve trained men performed the back squat, dead lift, overhead press, and curl lifts. The activity of the rectus abdominis, external oblique abdominis, transversus abdominis/internal oblique abdominis, and erector spinae muscles was assessed. Subjects performed each lift under three separate conditions including standing on stable ground with 50% of a 1-RM, standing on a BOSU Balance Trainer with 50% of a 1-RM, and standing on stable ground with 75% of a 1-RM. Results: Significant differences were noted between the stable 75% of …
Effect Of Rest Interval Length On The Volume Completed During Upper Body Resistance Exercise, Humberto Miranda, Roberto Simão, Leonardo Marmo Moreira, Renato Aparecido De Souza, João Antônio Alves De Souza, Belmiro Freitas De Salles, Jeffrey Willardson
Effect Of Rest Interval Length On The Volume Completed During Upper Body Resistance Exercise, Humberto Miranda, Roberto Simão, Leonardo Marmo Moreira, Renato Aparecido De Souza, João Antônio Alves De Souza, Belmiro Freitas De Salles, Jeffrey Willardson
Faculty Research and Creative Activity
The purpose of the current study was to compare the workout volume (sets x resistance x repetitions per set) completed during two upper body resistance exercise sessions that incorporated 1 minute versus 3 minute rest intervals between sets and exercises. Twelve trained men completed two experimental sessions that consisted of 5 upper body exercises (i.e. barbell bench press, incline barbell bench press, pec deck flye, barbell lying triceps extension, triceps pushdown) performed for three sets with an 8- RM load. The two experimental sessions differed only in the length of the rest interval between sets and exercises; one session with …
Demographics Of A Geographically-Isolated Population Of Threatened Salamander (Caudata: Ambystomatidae) In Central Illinois, Stephen J. Mullin, Sarabeth Klueh
Demographics Of A Geographically-Isolated Population Of Threatened Salamander (Caudata: Ambystomatidae) In Central Illinois, Stephen J. Mullin, Sarabeth Klueh
Faculty Research & Creative Activity
Amphibian populations that use small isolated wetlands are often small in size, susceptible to stochastic extinction processes, and have little to no contact with other populations. One can ascertain the persistence of such populations only by obtaining data that allow the prediction of future changes in population’s size, and propensity to achieve a sustainable number of individuals. The number of metamorphosing larvae leaving a pond predicts the viability of a salamander population, and thus, the number recruited into the terrestrial adult population. The Jefferson Salamander, Ambystoma jeffersonianum, is a listed threatened species in Illinois, occurring at fewer than 15 ponds …
Natural History Notes: Rhinocheilus Lecontei Tesselatus (Longevity), Stephen J. Mullin
Natural History Notes: Rhinocheilus Lecontei Tesselatus (Longevity), Stephen J. Mullin
Faculty Research & Creative Activity
No abstract provided.
Vegetative Anatomy And Systematics Of Triphorinae (Orchidaceae), Barbara S. Carlsward, William Louis Stern
Vegetative Anatomy And Systematics Of Triphorinae (Orchidaceae), Barbara S. Carlsward, William Louis Stern
Faculty Research & Creative Activity
Triphorinae represents a group of three anatomically simple genera, the structural features of which are unspecialized. The anomocytic stomatal pattern occurs in all genera; it predominates in Triphora . A foliar hypodermis, sclerenchyma, fibre bundles and stegmata are absent. The mesophyll is homogeneous. The exodermal and endodermal cells in the roots are entirely thin-walled and tilosomes are absent. However, there are anatomical modifications that appear to be unique: root hairs in Monophyllorchis are borne on velamenal buttresses and, in Psilochilus , they arise endogenously. In the root vascular system of Psilochilus , the metaxylem occurs as a circumferential band. The …
Behavioral Explanations Underlying The Lack Of Trap Effectiveness For Small-Scale Management Of Japanese Beetles (Coleoptera: Scarabaeidae), Paul Switzer, Patrick Enstrom, Carissa Schoenick
Behavioral Explanations Underlying The Lack Of Trap Effectiveness For Small-Scale Management Of Japanese Beetles (Coleoptera: Scarabaeidae), Paul Switzer, Patrick Enstrom, Carissa Schoenick
Faculty Research & Creative Activity
Traps containing a combination floral and synthetic pheromone lure are used to monitor and manage Japanese beetles, Popillia japonica Newman (Coleoptera: Scarabaeidae). One key factor limiting trap effectiveness for beetle control is the "trap spillover" phenomenon, in which the trap attracts beetles without capturing them, resulting in increased damage to surrounding host plants. We investigated the mechanisms underlying trap spillover by conducting two studies in a soybean field in east central Illinois. In the first study, we set up trap stations for 1 d and compared the sex, size, and egg load (for females) of beetles caught in the traps …
Vegetative Anatomy And Systematics Of Triphorinae (Orchidaceae), Barbara Carlsward, William Stern
Vegetative Anatomy And Systematics Of Triphorinae (Orchidaceae), Barbara Carlsward, William Stern
Faculty Research & Creative Activity
Triphorinae represents a group of three anatomically simple genera, the structural features of which are unspecialized. The anomocytic stomatal pattern occurs in all genera; it predominates in Triphora . A foliar hypodermis, sclerenchyma, fibre bundles and stegmata are absent. The mesophyll is homogeneous. The exodermal and endodermal cells in the roots are entirely thin-walled and tilosomes are absent. However, there are anatomical modifications that appear to be unique: root hairs in Monophyllorchis are borne on velamenal buttresses and, in Psilochilus , they arise endogenously. In the root vascular system of Psilochilus , the metaxylem occurs as a circumferential band. The …
Botany At Eastern Illinois University, Marissa Jernegan, Nancy Coutant, Janice Coons
Botany At Eastern Illinois University, Marissa Jernegan, Nancy Coutant, Janice Coons
Faculty Research & Creative Activity
Eastern Illinois University was established in 1899, and from its beginning the importance of the botanical sciences was recognized. Two terms of botany were required for the four year program. Dr. Otis W. Caldwell, a botanist, was one of the original faculty members. He taught all of the biology courses and initiated the acquisition of a greenhouse. Caldwell was the first in a series of talented and dedicated botany professors including Edgar N. Transeau, Ernest L. Stover, Hiram F. Thut and John E. Ebinger. These and many other professors incorporated a field component into almost all classes. This dedication to …
Investigation Of Insect Visits To Flowers Of Stylisma Pickeringii (Patterson Bindweed), An Endangered Plant Of Illinois Sand Prairies, A. Claerbout, H. Owen, Janice Coons, B. Todd
Investigation Of Insect Visits To Flowers Of Stylisma Pickeringii (Patterson Bindweed), An Endangered Plant Of Illinois Sand Prairies, A. Claerbout, H. Owen, Janice Coons, B. Todd
Faculty Research & Creative Activity
Little is known about the reproductive biology of Stylisma pickeringii var. pattersonii, an endangered plant in Illinois occurring in only three counties (Cass, Henderson, and Mason). The objective of this study was to estimate flower densities and temporal (time of day and seasonal) differences in insect visitation to flowers of S. pickeringii in 2002 for native populations in Henderson and Mason Counties. A 50 m transect was located where S. pickeringii was most abundant and quadrats (0.25 m2) were placed on alternate sides of the tape measure at every meter at random distances from the transect. The number of flowers …
Evaluation Of Glyphosate-Tolerant Soybean Cultivars For Resistance To Bacterial Pustule, Lopa Goradia, Glen Hartman, Steven Daniel
Evaluation Of Glyphosate-Tolerant Soybean Cultivars For Resistance To Bacterial Pustule, Lopa Goradia, Glen Hartman, Steven Daniel
Faculty Research & Creative Activity
Xanthomonas axonopodis pv. glycines causes bacterial pustule of soybean, which is a common disease in many soybean-growing areas of the world and is controlled by a single recessive gene (rxp gene) commonly found in many conventional glyphosate-sensitive soybean cultivars. Since glyphosate-tolerant cultivars are commonly planted today, there has been no information about whether these new cultivars have bacterial pustule resistance. The goal of this study was to screen glyphosate-tolerant soybean cultivars for resistance to X. axonopodis pv. glycines. Three experiments were completed to evaluate resistance. In experiment 1, 525 commercial glyphosate-tolerant cultivars from 2001 were inoculated with X. axonopodis pv. …
Sucrose Phosphate Synthase Expression Influences Poplar Phenology, Thomas Canam, Ji-Young Park, Kyu-Young Kang, Faride Unda, Shawn Mansfield
Sucrose Phosphate Synthase Expression Influences Poplar Phenology, Thomas Canam, Ji-Young Park, Kyu-Young Kang, Faride Unda, Shawn Mansfield
Faculty Research & Creative Activity
The objective of this study was to manipulate the intracellular pools of sucrose, and investigate its role in regulating plant growth, phenology (leaf senescence and bud break) and fibre development. This objective was achieved by differentially expressing an Arabidopsis (Arabidopsis thaliana L. Heynh.) sucrose phosphate synthase (SPS) gene in hybrid poplar (Populus alba · Populus grandidentata Michx.), a model system for tree biology with substantial industrial relevance in the context of short rotation forestry and a target bioenergy crop. Phenotypic differences were evident in the transgenic trees, as both the timing of bud flush and leaf senescence were altered compared …
Behavioral Explanations Underlying The Lack Of Trap Effectiveness For Small-Scale Management Of Japanese Beetles (Coleoptera: Scarabaeidae), Paul V. Switzer, Patrick C. Enstrom, Carissa A. Schoenick
Behavioral Explanations Underlying The Lack Of Trap Effectiveness For Small-Scale Management Of Japanese Beetles (Coleoptera: Scarabaeidae), Paul V. Switzer, Patrick C. Enstrom, Carissa A. Schoenick
Faculty Research & Creative Activity
Traps containing a combination floral and synthetic pheromone lure are used to monitor and manage Japanese beetles, Popillia japonica Newman (Coleoptera: Scarabaeidae). One key factor limiting trap effectiveness for beetle control is the "trap spillover" phenomenon, in which the trap attracts beetles without capturing them, resulting in increased damage to surrounding host plants. We investigated the mechanisms underlying trap spillover by conducting two studies in a soybean field in east central Illinois. In the first study, we set up trap stations for 1 d and compared the sex, size, and egg load (for females) of beetles caught in the traps …
Botany At Eastern Illinois University, Marissa C. Jernegan, Nancy E. Coutant, Janice M. Coons
Botany At Eastern Illinois University, Marissa C. Jernegan, Nancy E. Coutant, Janice M. Coons
Faculty Research & Creative Activity
Eastern Illinois University was established in 1899, and from its beginning the importance of the botanical sciences was recognized. Two terms of botany were required for the four year program. Dr. Otis W. Caldwell, a botanist, was one of the original faculty members. He taught all of the biology courses and initiated the acquisition of a greenhouse. Caldwell was the first in a series of talented and dedicated botany professors including Edgar N. Transeau, Ernest L. Stover, Hiram F. Thut and John E. Ebinger. These and many other professors incorporated a field component into almost all classes. This dedication to …