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Articles 31 - 60 of 598
Full-Text Articles in Biology
Mitochondrial Energetics Of Benthic And Pelagic Antarctic Teleosts, Eloy Martinez, Michael A. Menze, Joseph P. Torres
Mitochondrial Energetics Of Benthic And Pelagic Antarctic Teleosts, Eloy Martinez, Michael A. Menze, Joseph P. Torres
Faculty Research & Creative Activity
Antarctic fauna are highly adapted to the frigid waters of the Southern Ocean. This study describes the in vitro temperature sensitivity of oxygen consumption rates measured in liver mitochondria from the pelagic notothenioid Pleuragramma antarcticum between 5 and 35 C. Oxygen fluxes were measured after the addition of millimolar levels of pyruvate, malate, succinate and glutamate (state II, LEAK) and saturating levels of ADP [state III, oxidative phosphorylation (OXPHOS)]. State III respiration significantly decreased above 18.7 C. A comparison of the oxidative capacities among P. antarcticum and other notothenioids showed significant differences in state III respiration, where benthic species exhibited …
Activities Of Methionine-Γ-Lyase In The Acidophilic Archaeon “Ferroplasma Acidarmanus” Strain Fer1, M. A. Khan, Madeline M. Lopez-Munoz, Charles W. Kaspar, Kai F. Hung
Activities Of Methionine-Γ-Lyase In The Acidophilic Archaeon “Ferroplasma Acidarmanus” Strain Fer1, M. A. Khan, Madeline M. Lopez-Munoz, Charles W. Kaspar, Kai F. Hung
Kai F. Hung
Biogeochemical processes on exposed pyrite ores result in extremely high levels of sulfuric acid at these locations. Acidophiles that thrive in these conditions must overcome significant challenges, including an environment with proton concentrations at pH 3 or below. The role of sulfur metabolism in the archaeon “Ferroplasma acidarmanus” strain fer1’s ability to thrive in this environment was investigated due to its growth-dependent production of methanethiol, a volatile organic sulfur compound. Two putative sequences for methionine- γ-lyase (EC 4.4.1.11), an enzyme known to carry out α,γ-elimination on L-methionine to produce methanethiol, were identified in fer1. Bioinformatic analyses identified a conserved pyridoxal-5′-phosphate …
Activities Of Methionine-Γ-Lyase In The Acidophilic Archaeon “Ferroplasma Acidarmanus” Strain Fer1, M. Khan, Madeline Lopez-Munoz, Charles Kaspar, Kai Hung
Activities Of Methionine-Γ-Lyase In The Acidophilic Archaeon “Ferroplasma Acidarmanus” Strain Fer1, M. Khan, Madeline Lopez-Munoz, Charles Kaspar, Kai Hung
Faculty Research & Creative Activity
Biogeochemical processes on exposed pyrite ores result in extremely high levels of sulfuric acid at these locations. Acidophiles that thrive in these conditions must overcome significant challenges, including an environment with proton concentrations at pH 3 or below. The role of sulfur metabolism in the archaeon “Ferroplasma acidarmanus” strain fer1’s ability to thrive in this environment was investigated due to its growth-dependent production of methanethiol, a volatile organic sulfur compound. Two putative sequences for methionine- γ-lyase (EC 4.4.1.11), an enzyme known to carry out α,γ-elimination on L-methionine to produce methanethiol, were identified in fer1. Bioinformatic analyses identified a conserved pyridoxal-5′-phosphate …
Activities Of Methionine-Γ-Lyase In The Acidophilic Archaeon “Ferroplasma Acidarmanus” Strain Fer1, M. A. Khan, Madeline M. Lopez-Munoz, Charles W. Kaspar, Kai F. Hung
Activities Of Methionine-Γ-Lyase In The Acidophilic Archaeon “Ferroplasma Acidarmanus” Strain Fer1, M. A. Khan, Madeline M. Lopez-Munoz, Charles W. Kaspar, Kai F. Hung
Faculty Research & Creative Activity
Biogeochemical processes on exposed pyrite ores result in extremely high levels of sulfuric acid at these locations. Acidophiles that thrive in these conditions must overcome significant challenges, including an environment with proton concentrations at pH 3 or below. The role of sulfur metabolism in the archaeon “Ferroplasma acidarmanus” strain fer1’s ability to thrive in this environment was investigated due to its growth-dependent production of methanethiol, a volatile organic sulfur compound. Two putative sequences for methionine- γ-lyase (EC 4.4.1.11), an enzyme known to carry out α,γ-elimination on L-methionine to produce methanethiol, were identified in fer1. Bioinformatic analyses identified a conserved pyridoxal-5′-phosphate …
Mechanisms Of Freeze Avoidance In Eggs Of The Antarctic Naked Dragonfish (Gymnodraco Acuticeps) And Atlantic Tomcod (Microgadus Tomcod), Jeremy M. Carlson
Mechanisms Of Freeze Avoidance In Eggs Of The Antarctic Naked Dragonfish (Gymnodraco Acuticeps) And Atlantic Tomcod (Microgadus Tomcod), Jeremy M. Carlson
Student Honors Theses
A remarkable number of marine teleosts belonging to the perciform suborder Notothenioidei and the paracanthopterygian suborder Gadoidei (cods and their allies) have evolved biophysical and physiological adaptations that promote freeze avoidance to temperatures as low as 1oC below the equilibrium freezing point of their body fluids (Cheng et al. 2003; Costanzo et al. 1995; Howes 1991; Raymond and DeVries 1977). Among the Notothenioids endemic to the Antarctic Ocean, the naked dragonfish (Gymnodraco acuticeps, Figure 1) inhabits the ice-laden waters near McMurdo Sound where the annual water temperature remains stable at -1.87 ± 0.1oC (Komatsu et al. 1970; Bargelloni et al. …
Isoform-Specific Effects Of Apoe On Neurite Outgrowth In Olfactory Epithelium Culture, Aseem Hussain, Minh Luong, Apryl Pooley, Britto P. Nathan
Isoform-Specific Effects Of Apoe On Neurite Outgrowth In Olfactory Epithelium Culture, Aseem Hussain, Minh Luong, Apryl Pooley, Britto P. Nathan
Britto P. Nathan
The apolipoprotein E4 (apoE4) genotype is a major risk factor for developing late-onset Alzheimer’s disease (AD). Inheritance of apoE4 is also associated with impairments in olfactory function in early stages of AD. In this project we examined the effects of the three common isoforms of human apoE (apoE2, apoE3, and apoE4) on neuronal differentiation and neurite outgrowth in explant cultures of mouse olfactory epithelium (OE).
The Spatial Distribution Of The Japanese Beetle, Popillia Japonica, In Soybean Fields, Stacey A. Sara, Emily B. Mccallen, Paul V. Switzer
The Spatial Distribution Of The Japanese Beetle, Popillia Japonica, In Soybean Fields, Stacey A. Sara, Emily B. Mccallen, Paul V. Switzer
Paul V. Switzer
The Japanese beetle, Popillia japonica Newman (Coleoptera: Scarabaeidae), is a serious pest of many agricultural and horticultural plants. Relatively little research has investigated the distributions of Japanese beetles in agricultural fields, and this lack of information makes pest management more difficult. In the present study, the spatial distribution of Japanese beetles in soybean fields was examined. Specifically, how the distribution and abundance of beetles was affected by distance from an edge, edge direction, and edge type was examined. An edge effect for density was discovered; beetle numbers decreased significantly with increasing distance from the field edge. The east and south …
Isoform-Specific Effects Of Apoe On Neurite Outgrowth In Olfactory Epithelium Culture, Aseem Hussain, Minh Luong, Apryl Pooley, Britto P. Nathan
Isoform-Specific Effects Of Apoe On Neurite Outgrowth In Olfactory Epithelium Culture, Aseem Hussain, Minh Luong, Apryl Pooley, Britto P. Nathan
Faculty Research & Creative Activity
The apolipoprotein E4 (apoE4) genotype is a major risk factor for developing late-onset Alzheimer’s disease (AD). Inheritance of apoE4 is also associated with impairments in olfactory function in early stages of AD. In this project we examined the effects of the three common isoforms of human apoE (apoE2, apoE3, and apoE4) on neuronal differentiation and neurite outgrowth in explant cultures of mouse olfactory epithelium (OE).
Assessing Multiple Endpoints Of Atrazine Ingestion On Gravid Northern Watersnakes (Nerodia Sipedon) And Their Offspring, Lorin A. Neuman-Lee, Karen F. Gaines, Kyle A. Baumgartner, Jayme R. Voorhees, James M. Novak, Stephen J. Mullin
Assessing Multiple Endpoints Of Atrazine Ingestion On Gravid Northern Watersnakes (Nerodia Sipedon) And Their Offspring, Lorin A. Neuman-Lee, Karen F. Gaines, Kyle A. Baumgartner, Jayme R. Voorhees, James M. Novak, Stephen J. Mullin
Faculty Research & Creative Activity
Ecotoxicological studies that focus on a single endpoint might not accurately and completely represent the true ecological effects of a contaminant. Exposure to atrazine, a widely used herbicide, disrupts endocrine function and sexual development in amphibians, but studies involving live-bearing reptiles are lacking. This study tracks several effects of atrazine ingestion from female Northern Watersnakes (Nerodia sipedon) to their offspring exposed in utero. Twenty-five gravid N. sipedon were fed fish dosed with one of the four levels of atrazine (0, 2, 20, or 200 ppb) twice weekly for the entirety of their gestation period. Endpoints for the mothers included blood …
Comparative Anatomy And Dorsal Fin Muscle Activity During Turning Maneuvers In Two Shark Species, Anabela Maia, Cheryl Wilga
Comparative Anatomy And Dorsal Fin Muscle Activity During Turning Maneuvers In Two Shark Species, Anabela Maia, Cheryl Wilga
Faculty Research & Creative Activity
Stability and procured instability characterize two opposing types of swimming, steady and maneuvering, respectively. Fins can be used to manipulate flow to adjust stability during swimming maneuvers either actively using muscle control or passively by structural control. The function of the dorsal fins during turning maneuvering in two shark species with different swimming modes is investigated here using musculoskeletal anatomy and muscle function. White-spotted bamboo sharks are a benthic species that inhabits complex reef habitats and thus have high requirements for maneuverability. Spiny dogfish occupy a variety of coastal and continental shelf habitats and spend relatively more time cruising in …
Function Of Dorsal Fins In Bamboo Shark During Steady Swimming, Anabela Maia, Cheryl Wilga
Function Of Dorsal Fins In Bamboo Shark During Steady Swimming, Anabela Maia, Cheryl Wilga
Faculty Research & Creative Activity
To gain insight into the function of the dorsal fins in white-spotted bamboo sharks (Orectolobiformes: Hemiscyillidae) during steady swimming, data on three-dimensional kinematics and electromyographic recordings were collected. Bamboo sharks were induced to swim at 0.5 and 0.75 body lengths per second in a laminar flow tank. Displacement, lag and angles were analyzed from high-speed video images. Onset, offset, duration, duty cycle and asynchrony index were calculated from three muscle implants on each side of each dorsal fin. The dorsal fins were displaced more laterally than the undulating body. In addition, the dorsal tips had larger lateral displacement than the …
Isoform-Specific Effects Of Apoe On Neurite Outgrowth In Olfactory Epithelium Culture, Aseem Hussain, Minh Luong, Apryl Pooley, Britto Nathan
Isoform-Specific Effects Of Apoe On Neurite Outgrowth In Olfactory Epithelium Culture, Aseem Hussain, Minh Luong, Apryl Pooley, Britto Nathan
Faculty Research & Creative Activity
The apolipoprotein E4 (apoE4) genotype is a major risk factor for developing late-onset Alzheimer’s disease (AD). Inheritance of apoE4 is also associated with impairments in olfactory function in early stages of AD. In this project we examined the effects of the three common isoforms of human apoE (apoE2, apoE3, and apoE4) on neuronal differentiation and neurite outgrowth in explant cultures of mouse olfactory epithelium (OE).
Improved Tolerance To Salt And Water Stress In Drosophila Melanogaster Cells Conferred By Late Embryogenesis Abundant Protein, Matthew R. Marunde, Dilini A. Samarajeewa, John Anderson, Shumin Li, Steven C. Hand, Michael A. Menze
Improved Tolerance To Salt And Water Stress In Drosophila Melanogaster Cells Conferred By Late Embryogenesis Abundant Protein, Matthew R. Marunde, Dilini A. Samarajeewa, John Anderson, Shumin Li, Steven C. Hand, Michael A. Menze
Faculty Research & Creative Activity
Mechanisms that govern anhydrobiosis involve the accumulation of highly hydrophilic macromolecules, such as late embryogenesis abundant (LEA) proteins. Group 1 LEA proteins comprised of 181 (AfLEA1.1) and 197 (AfLEA1.3) amino acids were cloned from embryos of Artemia franciscana and expressed in Drosophila melanogaster cells (Kc167). Confocal microscopy revealed a construct composed of green fluorescence protein (GFP) and AfLEA1.3 accumulates in the mitochondria (AfLEA1.3-GFP), while AfLEA1.1-GFP was found in the cytoplasm. In the presence of mixed substrates, oxygen consumption was statistically identical for permeabilized Kc167 control and Kc167-AfLEA1.3 cells. Acute titrations of permeabilized cells with NaCl up to 500 mM led …
Diapause And Anhydrobiosis In Embryos Of Artemia Franciscana: Metabolic Depression, Lea Proteins And Water Stress, Steven C. Handel, Yuvraj Patil, Shumin Li, Nilay Chakraborty, Apurva Borcar, Michael A. Menze, Leaf C. Boswell, Daniel Moore, Mehmet Toner
Diapause And Anhydrobiosis In Embryos Of Artemia Franciscana: Metabolic Depression, Lea Proteins And Water Stress, Steven C. Handel, Yuvraj Patil, Shumin Li, Nilay Chakraborty, Apurva Borcar, Michael A. Menze, Leaf C. Boswell, Daniel Moore, Mehmet Toner
Faculty Research & Creative Activity
Metabolic depression is typically correlated with extended survival of environmental challenge and energy-limitation in early life stages of various invertebrates and vertebrates. Diapause is an ontogenetically-programmed reduction of development and often metabolism seen in many invertebrates. When embryos of Artemia franciscana enter the state of diapause, the overall metabolic depression is estimated to be greater than 99%. These embryos also contain trehalose and express multiple isoforms of Late Embryogenesis Abundant (LEA) proteins, constituents often present in a number of such anhydrobiotic animals. The mRNA levels for LEA proteins are highest in diapause and post-diapause embryos that possess desiccation tolerance, but …
The Spatial Distribution Of The Japanese Beetle, Popillia Japonica, In Soybean Fields, Stacey Sara, Emily Mccallen, Paul Switzer
The Spatial Distribution Of The Japanese Beetle, Popillia Japonica, In Soybean Fields, Stacey Sara, Emily Mccallen, Paul Switzer
Faculty Research & Creative Activity
The Japanese beetle, Popillia japonica Newman (Coleoptera: Scarabaeidae), is a serious pest of many agricultural and horticultural plants. Relatively little research has investigated the distributions of Japanese beetles in agricultural fields, and this lack of information makes pest management more difficult. In the present study, the spatial distribution of Japanese beetles in soybean fields was examined. Specifically, how the distribution and abundance of beetles was affected by distance from an edge, edge direction, and edge type was examined. An edge effect for density was discovered; beetle numbers decreased significantly with increasing distance from the field edge. The east and south …
The Spatial Distribution Of The Japanese Beetle, Popillia Japonica, In Soybean Fields, Stacey A. Sara, Emily B. Mccallen, Paul V. Switzer
The Spatial Distribution Of The Japanese Beetle, Popillia Japonica, In Soybean Fields, Stacey A. Sara, Emily B. Mccallen, Paul V. Switzer
Faculty Research & Creative Activity
The Japanese beetle, Popillia japonica Newman (Coleoptera: Scarabaeidae), is a serious pest of many agricultural and horticultural plants. Relatively little research has investigated the distributions of Japanese beetles in agricultural fields, and this lack of information makes pest management more difficult. In the present study, the spatial distribution of Japanese beetles in soybean fields was examined. Specifically, how the distribution and abundance of beetles was affected by distance from an edge, edge direction, and edge type was examined. An edge effect for density was discovered; beetle numbers decreased significantly with increasing distance from the field edge. The east and south …
A Spatially Explicit Model To Predict Radiocesium Body Burdens Of White- Tailed Deer On The U.S. Department Of Energy's Savannah River Site, Christopher W. Bobryk, Karen F. Gaines, James M. Novak, Susan A. Blas
A Spatially Explicit Model To Predict Radiocesium Body Burdens Of White- Tailed Deer On The U.S. Department Of Energy's Savannah River Site, Christopher W. Bobryk, Karen F. Gaines, James M. Novak, Susan A. Blas
Faculty Research & Creative Activity
We developed a spatially explicit exposure model to interpolate and predict radiocesium (137Cs) body burdens found in white-tailed deer (Odocoileus virginianus) on the U.S. Department of Energy’s (USDOE) Savannah River Site (SRS) to gain insight into and differentiate between the main contributing sources of this radionuclide for use in harvest management strategies that focus on minimizing human risk. Hunting has been allowed from permanent stands as a mechanism to manage the deer herd since 1965. All animals are monitored in the field for gross beta and gamma activity levels, providing a spatially explicit dataset. The models described here use the …
Demographics And Seasonal Abundance Of Sportfish In Three Thermal Habitats Of Coffeen Lake, Anthony Paul Porreca
Demographics And Seasonal Abundance Of Sportfish In Three Thermal Habitats Of Coffeen Lake, Anthony Paul Porreca
Masters Theses
No abstract provided.
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 …
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
Britto P. Nathan
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 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
Zhiwei Liu
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.
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.
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
Andrew S. Methven
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 …
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] …