Open Access. Powered by Scholars. Published by Universities.®

Digital Commons Network™

Open Access. Powered by Scholars. Published by Universities.®

Louisiana State University

Discipline
Keyword
Publication Year
Publication
Publication Type
File Type

Articles 2911 - 2940 of 9751

Full-Text Articles in Entire DC Network

Mechanosensory Signaling As A Potential Mode Of Communication During Social Interactions In Fishes, Julie M. Butler, Karen P. Maruska Sep 2016

Mechanosensory Signaling As A Potential Mode Of Communication During Social Interactions In Fishes, Julie M. Butler, Karen P. Maruska

Faculty Publications

© 2016. Published by The Company of Biologists Ltd. Signals produced during social interactions convey crucial information about the sender's identity, quality, reproductive state and social status. Fishes can detect near-body water movements via the mechanosensory lateral line system, and this sense is used during several common fish behaviors, such as schooling, rheotaxis and predator-prey interactions. In addition, many fish behaviors, such as aggressive lateral displays and reproductive body quivers, involve fin and body motions that generate water movements that can be detected by the lateral line system of nearby fish. This mechanosensory system is well studied for its role …

Go to article

Faculty Senate Newsletter, September 2016, Louisiana State University And Agricultural & Mechanical College Sep 2016

Faculty Senate Newsletter, September 2016, Louisiana State University And Agricultural & Mechanical College

LSU Faculty Senate Publications

Message from President: Academe is not immune to the new epidemic of affiliation. Often enough, thinking people choose careers in higher education owing in part to a desire to escape the avalanche of demographic labels—race; class; gender; ethnicity; income; educational level; zip code and associated social status; favorite URLs—that rolls over individuality and buries free thinking. Academe, many hope, provides the last bastion for individual achievement. The quest for liberty, whether from imposed group identities or mass movements, is, as revolutionaries soon discover, not so easy as expected. Even dissidents want to belong to something. Surprisingly, academic folk prize affiliation …

Go to article

Effects Of Estradiol-17Β Or Dihydrotestosterone On Cell Types In Equine Pituitaries Staining For Prolactin, Growth Hormone, Or Both, M. Saeed Rahmanian, Donald L. Thompson Sep 2016

Effects Of Estradiol-17Β Or Dihydrotestosterone On Cell Types In Equine Pituitaries Staining For Prolactin, Growth Hormone, Or Both, M. Saeed Rahmanian, Donald L. Thompson

Faculty Publications

© 2016 Elsevier Inc. Ovariectomized pony mares were treated with vehicle (controls), estradiol-17β (estradiol), or dihydrotestosterone (DHT) daily for 21 days in summer, and the pituitary content of prolactin and growth hormone (GH) and the numbers of cells staining immunocytochemically for prolactin (lactotropes), GH (somatotropes), or both hormones (mammosomatotropes) were assessed. Treatments did not alter (P > .1) plasma prolactin concentrations over the 21 days. Estradiol treatment increased (P < .05) the pituitary content of prolactin several-fold relative to controls and DHT-treated ponies. The number of lactotropes was also increased (P < .05), as was the number of mammosomatotropes (P < .05). Treatment with DHT did not alter (P > .1) any prolactin characteristic. The number of somatotropes was not altered by either treatment (P > .1) nor was the pituitary content of GH (P > .1). Given that the mass of prolactin accumulation …

Go to article

Multidimensional Solid-State Nmr Spectroscopy Of Plant Cell Walls, Tuo Wang, Pyae Phyo, Mei Hong Sep 2016

Multidimensional Solid-State Nmr Spectroscopy Of Plant Cell Walls, Tuo Wang, Pyae Phyo, Mei Hong

Faculty Publications

© 2016 Elsevier Inc. Plant biomass has become an important source of bio-renewable energy in modern society. The molecular structure of plant cell walls is difficult to characterize by most atomic-resolution techniques due to the insoluble and disordered nature of the cell wall. Solid-state NMR (SSNMR) spectroscopy is uniquely suited for studying native hydrated plant cell walls at the molecular level with chemical resolution. Significant progress has been made in the last five years to elucidate the molecular structures and interactions of cellulose and matrix polysaccharides in plant cell walls. These studies have focused on primary cell walls of growing …

Go to article

Is Exposure To Macondo Oil Reflected In The Otolith Chemistry Of Marsh-Resident Fish?, Paola C. López-Duarte, F. Joel Fodrie, Olaf P. Jensen, Andrew Whitehead, Fernando Galvez, Benjamin Dubansky, Kenneth W. Able Sep 2016

Is Exposure To Macondo Oil Reflected In The Otolith Chemistry Of Marsh-Resident Fish?, Paola C. López-Duarte, F. Joel Fodrie, Olaf P. Jensen, Andrew Whitehead, Fernando Galvez, Benjamin Dubansky, Kenneth W. Able

Faculty Publications

© 2016 López-Duarte et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. Genomic and physiological responses in Gulf killifish (Fundulus grandis) in the northern Gulf of Mexico have confirmed oil exposure of resident marsh fish following the Macondo blowout in 2010. Using these same fish, we evaluated otolith microchemistry as a method for assessing oil exposure history. Laser-ablation inductively-coupled-plasma mass spectrometry was used to analyze the chemical composition of sagittal otoliths to assess …

Go to article

The Macroecology Of Infectious Diseases: A New Perspective On Global-Scale Drivers Of Pathogen Distributions And Impacts, Patrick R. Stephens, Sonia Altizer, Katherine F. Smith, A. Alonso Aguirre, James H. Brown, Sarah A. Budischak, James E. Byers, Tad A. Dallas, T. Jonathan Davies, John M. Drake, Vanessa O. Ezenwa, Maxwell J. Farrell, John L. Gittleman, Barbara A. Han, Shan Huang, Rebecca A. Hutchinson, Pieter Johnson, Charles L. Nunn, David Onstad, Andrew Park, Gonzalo M. Vazquez-Prokopec, John P. Schmidt, Robert Poulin Sep 2016

The Macroecology Of Infectious Diseases: A New Perspective On Global-Scale Drivers Of Pathogen Distributions And Impacts, Patrick R. Stephens, Sonia Altizer, Katherine F. Smith, A. Alonso Aguirre, James H. Brown, Sarah A. Budischak, James E. Byers, Tad A. Dallas, T. Jonathan Davies, John M. Drake, Vanessa O. Ezenwa, Maxwell J. Farrell, John L. Gittleman, Barbara A. Han, Shan Huang, Rebecca A. Hutchinson, Pieter Johnson, Charles L. Nunn, David Onstad, Andrew Park, Gonzalo M. Vazquez-Prokopec, John P. Schmidt, Robert Poulin

Faculty Publications

© 2016 John Wiley & Sons Ltd/CNRS. Identifying drivers of infectious disease patterns and impacts at the broadest scales of organisation is one of the most crucial challenges for modern science, yet answers to many fundamental questions remain elusive. These include what factors commonly facilitate transmission of pathogens to novel host species, what drives variation in immune investment among host species, and more generally what drives global patterns of parasite diversity and distribution? Here we consider how the perspectives and tools of macroecology, a field that investigates patterns and processes at broad spatial, temporal and taxonomic scales, are expanding scientific …

Go to article

Host-Induced Silencing Of Fusarium Culmorum Genes Protects Wheat From Infection, Wanxin Chen, Christine Kastner, Daniela Nowara, Ely Oliveira-Garcia, Twan Rutten, Yusheng Zhao, Holger B. Deising, Jochen Kumlehn, Patrick Schweizer Sep 2016

Host-Induced Silencing Of Fusarium Culmorum Genes Protects Wheat From Infection, Wanxin Chen, Christine Kastner, Daniela Nowara, Ely Oliveira-Garcia, Twan Rutten, Yusheng Zhao, Holger B. Deising, Jochen Kumlehn, Patrick Schweizer

Faculty Publications

Plants producing antisense or double-stranded RNA molecules that target specific genes of eukaryotic pests or pathogens can become protected from their attack. This beneficial effect was also reported for plant-fungus interactions and is believed to reflect uptake of the RNAs by the fungus via an as yet unknown mechanism, followed by target gene silencing. Here we report that wheat plants pre-infected with Barley stripe mosaic virus (BSMV) strains containing antisense sequences against target genes of the Fusarium head blight (FHB) fungus F. culmorum caused a reduction of corresponding transcript levels in the pathogen and reduced disease symptoms. Stable transgenic wheat …

Go to article

Exponential Convergence Of The Stochastic Micropolar And Magneto-Micropolar Fluid Systems, Kazuo Yamazaki Sep 2016

Exponential Convergence Of The Stochastic Micropolar And Magneto-Micropolar Fluid Systems, Kazuo Yamazaki

Communications on Stochastic Analysis

No abstract provided.

Go to article

Caustic Structures And Detectability Of Circumbinary Planets In Microlensing, Jacob K. Luhn, Matthew T. Penny, B. Scott Gaudi Aug 2016

Caustic Structures And Detectability Of Circumbinary Planets In Microlensing, Jacob K. Luhn, Matthew T. Penny, B. Scott Gaudi

Faculty Publications

Recent discoveries of circumbinary planets in Kepler data show that there is a viable channel of planet formation around binary main-sequence stars. Motivated by these discoveries, we have investigated the caustic structures and detectability of circumbinary planets in microlensing events. We have produced a suite of animations of caustics as a function of the projected separation and angle of the binary host to efficiently explore caustic structures over the entire circumbinary parameter space. Aided by these animations, we have derived a semi-empirical analytic expression for the location of planetary caustics, which are displaced in circumbinary lenses relative to those of …

Go to article

Maternal Obesity Epigenetically Alters Visceral Fat Progenitor Cell Properties In Male Offspring Mice, Xingwei Liang, Qiyuan Yang, Xing Fu, Carl J. Rogers, Bo Wang, Hong Pan, Mei Jun Zhu, Peter W. Nathanielsz, Min Du Aug 2016

Maternal Obesity Epigenetically Alters Visceral Fat Progenitor Cell Properties In Male Offspring Mice, Xingwei Liang, Qiyuan Yang, Xing Fu, Carl J. Rogers, Bo Wang, Hong Pan, Mei Jun Zhu, Peter W. Nathanielsz, Min Du

Faculty Publications

© 2016 The Authors. The Journal of Physiology © 2016 The Physiological Society Key points: Maternal obesity reduces adipogenic progenitor density in offspring adipose tissue. The ability of adipose tissue expansion in the offspring of obese mothers is limited and is associated with metabolic dysfunction of adipose tissue when challenged with a high-fat diet. Maternal obesity induces DNA demethylation in the promoter of zinc finger protein 423, which renders progenitor cells with a high adipogenic capacity. Maternal obesity demonstrates long-term effects on the adipogenic capacity of progenitor cells in offspring adipose tissue, demonstrating a developmental programming effect. Abstract: Maternal obesity …

Go to article

Attenuation Of Pamp-Triggered Immunity In Maize Requires Down-Regulation Of The Key Β-1,6-Glucan Synthesis Genes Kre5 And Kre6 In Biotrophic Hyphae Of Colletotrichum Graminicola, Ely Oliveira-Garcia, Holger B. Deising Aug 2016

Attenuation Of Pamp-Triggered Immunity In Maize Requires Down-Regulation Of The Key Β-1,6-Glucan Synthesis Genes Kre5 And Kre6 In Biotrophic Hyphae Of Colletotrichum Graminicola, Ely Oliveira-Garcia, Holger B. Deising

Faculty Publications

In plants, pathogen defense is initiated by recognition of pathogen-associated molecular patterns (PAMPs) via plasma membrane-localized pattern-recognition receptors (PRRs). Fungal structural cell wall polymers such as branched β-glucans are essential for infection structure rigidity and pathogenicity, but at the same time represent PAMPs. Kre5 and Kre6 are key enzymes in β-1,6-glucan synthesis and formation of branch points of the β-glucan network. In spite of the importance of branched β-glucan for hyphal rigidity and plant–fungus interactions, neither the role of KRE5 and KRE6 in pathogenesis nor mechanisms allowing circumventing branched β-glucan-triggered immune responses are known. We functionally characterized KRE5 and KRE6 …

Go to article

Spatiotemporal Distributions Of Sr And Ba Along An Estuarine River With A Large Salinity Gradient To The Gulf Of Mexico, Songjie He, Y. Jun Xu Aug 2016

Spatiotemporal Distributions Of Sr And Ba Along An Estuarine River With A Large Salinity Gradient To The Gulf Of Mexico, Songjie He, Y. Jun Xu

Faculty Publications

Strontium and barium to calcium ratios are often used as proxies for tracking animal movement across salinity gradients. Many estuarine rivers face saltwater intrusion due to sea level rise, potentially causing changes in mobility and distribution of these metals upstream. From May 2013 to August 2015, monthly water samples were collected and in-situ measurements were performed at six sites along an estuary strongly affected by saltwater intrusion, the Calcasieu River, with salinity ranging from 0.02 to 29.50 Parts Per Thousand (ppt). Results showed that the total Sr concentration and the Sr/Ca ratio both increased significantly with increasing salinity. The average …

Go to article

Invited Review: Mesenchymal Progenitor Cells In Intramuscular Connective Tissue Development, Z. G. Miao, L. P. Zhang, X. Fu, Q. Y. Yang, M. J. Zhu, M. V. Dodson, M. Du Jul 2016

Invited Review: Mesenchymal Progenitor Cells In Intramuscular Connective Tissue Development, Z. G. Miao, L. P. Zhang, X. Fu, Q. Y. Yang, M. J. Zhu, M. V. Dodson, M. Du

Faculty Publications

© The Animal Consortium 2015. The abundance and cross-linking of intramuscular connective tissue contributes to the background toughness of meat, and is thus undesirable. Connective tissue is mainly synthesized by intramuscular fibroblasts. Myocytes, adipocytes and fibroblasts are derived from a common pool of progenitor cells during the early embryonic development. It appears that multipotent mesenchymal stem cells first diverge into either myogenic or non-myogenic lineages; non-myogenic mesenchymal progenitors then develop into the stromal-vascular fraction of skeletal muscle wherein adipocytes, fibroblasts and derived mesenchymal progenitors reside. Because non-myogenic mesenchymal progenitors mainly undergo adipogenic or fibrogenic differentiation during muscle development, strengthening progenitor …

Go to article

Three Distinct Glutamate Decarboxylase Genes In Vertebrates, Brian P. Grone, Karen P. Maruska Jul 2016

Three Distinct Glutamate Decarboxylase Genes In Vertebrates, Brian P. Grone, Karen P. Maruska

Faculty Publications

Gamma-aminobutyric acid (GABA) is a widely conserved signaling molecule that in animals has been adapted as a neurotransmitter. GABA is synthesized from the amino acid glutamate by the action of glutamate decarboxylases (GADs). Two vertebrate genes, GAD1 and GAD2, encode distinct GAD proteins: GAD67 and GAD65, respectively. We have identified a third vertebrate GAD gene, GAD3. This gene is conserved in fishes as well as tetrapods. We analyzed protein sequence, gene structure, synteny, and phylogenetics to identify GAD3 as a homolog of GAD1 and GAD2. Interestingly, we found that GAD3 was lost in the hominid lineage. Because of the importance …

Go to article

First Record Of The Non-Native Suckermouth Armored Catfish Hypostomus Cf. Niceforoi (Fowler 1943) (Siluriformes: Loricariidae) From Central America, Wilfredo A. Matamoros, Caleb D. Mcmahan, Carlos R. Mejia, Parker H. House, Jonathan W. Armbruster, Prosanta Chakrabarty Jul 2016

First Record Of The Non-Native Suckermouth Armored Catfish Hypostomus Cf. Niceforoi (Fowler 1943) (Siluriformes: Loricariidae) From Central America, Wilfredo A. Matamoros, Caleb D. Mcmahan, Carlos R. Mejia, Parker H. House, Jonathan W. Armbruster, Prosanta Chakrabarty

Occasional Papers of the Museum of Natural Science, Louisiana State University

We document the first record of Hypostomus cf. niceforoi in Central America. Two specimens of these suckermouth armored catfishes were collected in Lake Nicaragua (Nicaragua) and identified as H. cf. niceforoi. Hypostomus niceforoi is endemic to Andean streams of Colombia, Venezuela, Ecuador, and Peru. We hypothesize that its introduction in Central America is related to the aquarium trade, as is the case of other armored catfish species introductions.

Go to article

Phosphogenesis Associated With The Shuram Excursion: Petrographic And Geochemical Observations From The Ediacaran Doushantuo Formation Of South China, Huan Cui, Shuhai Xiao, Chuanming Zhou, Yongbo Peng, Alan J. Kaufman, Rebecca E. Plummer Jul 2016

Phosphogenesis Associated With The Shuram Excursion: Petrographic And Geochemical Observations From The Ediacaran Doushantuo Formation Of South China, Huan Cui, Shuhai Xiao, Chuanming Zhou, Yongbo Peng, Alan J. Kaufman, Rebecca E. Plummer

Faculty Publications

© 2016 Elsevier B.V. The Ediacaran Period witnessed one of the largest phosphogenic events in Earth's history. Coincidently, some phosphorite deposits in South China are associated with the largest-known carbon isotope negative excursion (i.e., Shuram Excursion), suggesting an intimate coupling of the biogeochemical carbon and phosphorous cycles. However, the geomicrobiological linkage between these anomalies remain poorly understood. In this study, we investigated the phosphorite samples from the uppermost Doushantuo Formation in South China. Carbon isotope compositions of authigenic calcite cements and nodules in the phosphorites are as low as –34‰ (VPDB). Petrographic and geochemical investigations indicate that the 13C-depleted carbonates …

Go to article

Enhancing Phosphate Adsorption By Mg/Al Layered Double Hydroxide Functionalized Biochar With Different Mg/Al Ratios, Ronghua Li, Jim J. Wang, Baoyue Zhou, Mukesh Kumar Awasthi, Amjad Ali, Zengqiang Zhang, Lewis A. Gaston, Altaf Hussain Lahori, Amanullah Mahar Jul 2016

Enhancing Phosphate Adsorption By Mg/Al Layered Double Hydroxide Functionalized Biochar With Different Mg/Al Ratios, Ronghua Li, Jim J. Wang, Baoyue Zhou, Mukesh Kumar Awasthi, Amjad Ali, Zengqiang Zhang, Lewis A. Gaston, Altaf Hussain Lahori, Amanullah Mahar

Faculty Publications

Mg/Al ratio plays a significant role for anion adsorption by Mg/Al-layered double hydroxides (Mg/Al-LDHs) modified biochar. In this study, Mg/Al-LDHs biochar with different Mg/Al ratios (2, 3, 4) were prepared by co-precipitation for phosphate removal from aqueous solution. Factors on phosphate adsorption including Mg/Al ratio, pH, and the presence of other inorganic anions were investigated through batch experiments. Increasing Mg/Al ratio in the Mg/Al-LDHs biochar composites generally enhanced phosphate adsorption with Langmuir adsorption maximum calculated at 81.83 mg phosphorous (P) per gram of 4:1 Mg/Al-LDHs biochar at pH 3.0. The adsorption process was best described by the pseudo-second-order kinetic model. …

Go to article

New "Light" For One-World Approach Toward Safe And Effective Control Of Animal Diseases And Insect Vectors From Leishmaniac Perspectives, Kwang Poo Chang, Bala K. Kolli, Ramesh B. Batchu, Hui Wen Chen, Larry Ming C. Chow, Robert Elliott, Jonathan F. Head, Chia Kwung Fan, Chen Hsiung Hung, Dar Der Ji, Zhao Rong Lun, Laura Manna, Yoshitsugu Matsumoto, Dennis K.P. Ng, Camila I. De Oliveira, Sayonara Melo, Yusuf Ozbel, Ahmet Özbilgin, Joseph Reynolds, Chizu Sanjoba, Shin Hong Shiao, Nang Yao Shih, Chi Wei Tsai, Maria Da Graça H. Vicente, Charles H. Barré, Petr Volf, Yueh Lung Wu, Chao Lan Yu, Xiao Nong Zhou Jul 2016

New "Light" For One-World Approach Toward Safe And Effective Control Of Animal Diseases And Insect Vectors From Leishmaniac Perspectives, Kwang Poo Chang, Bala K. Kolli, Ramesh B. Batchu, Hui Wen Chen, Larry Ming C. Chow, Robert Elliott, Jonathan F. Head, Chia Kwung Fan, Chen Hsiung Hung, Dar Der Ji, Zhao Rong Lun, Laura Manna, Yoshitsugu Matsumoto, Dennis K.P. Ng, Camila I. De Oliveira, Sayonara Melo, Yusuf Ozbel, Ahmet Özbilgin, Joseph Reynolds, Chizu Sanjoba, Shin Hong Shiao, Nang Yao Shih, Chi Wei Tsai, Maria Da Graça H. Vicente, Charles H. Barré, Petr Volf, Yueh Lung Wu, Chao Lan Yu, Xiao Nong Zhou

Faculty Publications

© 2016 The Author(s). Light is known to excite photosensitizers (PS) to produce cytotoxic reactive oxygen species (ROS) in the presence of oxygen. This modality is attractive for designing control measures against animal diseases and pests. Many PS have a proven safety record. Also, the ROS cytotoxicity selects no resistant mutants, unlike other drugs and pesticides. Photodynamic therapy (PDT) refers to the use of PS as light activable tumoricides, microbicides and pesticides in medicine and agriculture. Here we describe "photodynamic vaccination" (PDV) that uses PDT-inactivation of parasites, i.e. Leishmania as whole-cell vaccines against leishmaniasis, and as a universal carrier to …

Go to article

Responses Of Adenohypophyseal Hormones To Substance P Administration In Geldings: Comparison To Responses After Brief Exercise And Sulpiride Administration, Donald L. Thompson, Nicole Arana Valencia, Erin L. Oberhaus Jul 2016

Responses Of Adenohypophyseal Hormones To Substance P Administration In Geldings: Comparison To Responses After Brief Exercise And Sulpiride Administration, Donald L. Thompson, Nicole Arana Valencia, Erin L. Oberhaus

Faculty Publications

© 2016 Elsevier Inc. Nine adult geldings were used in three experiments to study the possible role of substance P in the prolactin responses to nondopaminergic stimuli. Experiment 1 was performed as an incomplete Latin square design to determine the secretory responses of prolactin, growth hormone (GH), adrenocorticotropic hormone (ACTH), thyroid-stimulating hormone (TSH), luteinizing hormone (LH), and follicle-stimulating hormone (FSH) to IV administration of substance P. Doses tested and compared to no peptide (0 dose, control) were 62, 125, 250, and 500 μg of substance P. The three highest doses of peptide caused an immediate rise in heart rate, sweating, …

Go to article

A New Genus And Species Of Blind Sleeper (Teleostei: Eleotridae) From Oaxaca, Mexico: First Obligate Cave Gobiiform In The Western Hemisphere, Stephen J. Walsh, Prosanta Chakrabarty Jul 2016

A New Genus And Species Of Blind Sleeper (Teleostei: Eleotridae) From Oaxaca, Mexico: First Obligate Cave Gobiiform In The Western Hemisphere, Stephen J. Walsh, Prosanta Chakrabarty

Faculty Publications

© 2016 by the American Society of Ichthyologists and Herpetologists. Caecieleotris morrisi, new genus and species of sleeper (family Eleotridae), is described from a submerged freshwater cave in a karst region of the northern portion of the State of Oaxaca, Mexico, Río Papaloapan drainage, Gulf of Mexico basin. The new species represents the first cave-adapted sleeper known from the Western Hemisphere and is one of only 13 stygobitic gobiiforms known worldwide, with all others limited in distribution to the Indo-Pacific region. The new taxon represents a third independent evolution of a hypogean lifestyle in sleepers, the others being two species …

Go to article

Louisiana Agriculture Summer, 2016, Lsu Agcenter Jul 2016

Louisiana Agriculture Summer, 2016, Lsu Agcenter

Louisiana Agriculture

No abstract provided.

Go to article

Cobalt Chloride Treatment Used To Ablate The Lateral Line System Also Impairs The Olfactory System In Three Freshwater Fishes, Julie M. Butler, Karen E. Field, Karen P. Maruska Jul 2016

Cobalt Chloride Treatment Used To Ablate The Lateral Line System Also Impairs The Olfactory System In Three Freshwater Fishes, Julie M. Butler, Karen E. Field, Karen P. Maruska

Faculty Publications

© 2016 Butler et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. Fishes use multimodal signals during both inter- and intra-sexual displays to convey information about their sex, reproductive state, and social status. These complex behavioral displays can include visual, auditory, olfactory, tactile, and hydrodynamic signals, and the relative role of each sensory channel in these complex multi-sensory interactions is a common focus of neuroethology. The mechanosensory lateral line system of fishes detects …

Go to article

Mitogen-Dependent Regulation Of Dusp1 Governs Erk And P38 Signaling During Early 3t3-L1 Adipocyte Differentiation, Bradley S. Ferguson, Heesun Nam, Jacqueline M. Stephens, Ron F. Morrison Jul 2016

Mitogen-Dependent Regulation Of Dusp1 Governs Erk And P38 Signaling During Early 3t3-L1 Adipocyte Differentiation, Bradley S. Ferguson, Heesun Nam, Jacqueline M. Stephens, Ron F. Morrison

Faculty Publications

© 2015 Wiley Periodicals, Inc. Knowledge concerning mechanisms that control proliferation and differentiation of preadipocytes is essential to our understanding of adipocyte hyperplasia and the development of obesity. Evidence has shown that temporal regulation of mitogen-activated protein kinase (MAPK) phosphorylation and dephosphorylation is critical for coupling extracellular stimuli to cellular growth and differentiation. Using differentiating 3T3-L1 preadipocytes as a model of adipocyte hyperplasia, we examined a role for dual-specificity phosphatase 1 (DUSP1) on the timely modulation of MAPK signaling during states of growth arrest, proliferation, and differentiation. Using real-time reverse transcription PCR (qRT-PCR), we report that DUSP1 is induced during …

Go to article

Environmental Context For The Terminal Ediacaran Biomineralization Of Animals, H. Cui, A. J. Kaufman, S. Xiao, S. Peek, H. Cao, X. Min, Y. Cai, Z. Siegel, X. M. Liu, Y. Peng, J. D. Schiffbauer, A. J. Martin Jul 2016

Environmental Context For The Terminal Ediacaran Biomineralization Of Animals, H. Cui, A. J. Kaufman, S. Xiao, S. Peek, H. Cao, X. Min, Y. Cai, Z. Siegel, X. M. Liu, Y. Peng, J. D. Schiffbauer, A. J. Martin

Faculty Publications

© 2016 John Wiley & Sons Ltd In terminal Ediacaran strata of South China, the onset of calcareous biomineralization is preserved in the paleontological transition from Conotubus to Cloudina in repetitious limestone facies of the Dengying Formation. Both fossils have similar size, funnel-in-funnel construction, and epibenthic lifestyle, but Cloudina is biomineralized, whereas Conotubus is not. To provide environmental context for this evolutionary milestone, we conducted a high-resolution elemental and stable isotope study of the richly fossiliferous Gaojiashan Member. Coincident with the first appearance of Cloudina is a significant positive carbonate carbon isotope excursion (up to +6‰) and an increase in …

Go to article

Discovering Potential Protein, Carbohydrate, And Lipid Based Food Ingredients In A Co-Culture Of Microalgae, Chelsea Tyus Jun 2016

Discovering Potential Protein, Carbohydrate, And Lipid Based Food Ingredients In A Co-Culture Of Microalgae, Chelsea Tyus

LSU Doctoral Dissertations

Louisiana Native Co-Culture of Microalgae (Chlorella Vulgaris L. and Cyanobacteria Leptolyngbya sp.) (CCA) was studied. CCA is a viable coculture for further investigation as a food component. This research characterized the proteins, carbohydrates, and lipids present in CCA. Algae cultivation parameters were controlled and analyzed. Treatment (Trt) 1 was CCA grown in cultures exposed to average scalar irradiance (ASI) of 1041 ± 269.18 μmol m-2 s-1 PAR and trt 2 was CCA grown in cultures exposed to ASI of 430 ± 96.03 μmol m-2 s-1 PAR. The trt (irradiance exposure) had the desired response on CCA species ratio Trt …

Go to article

A Cross-Species Bi-Clustering Approach To Identifying Conserved Co-Regulated Genes, Jiangwen Sun, Zongliang Jiang, Xiuchun Tian, Jinbo Bi Jun 2016

A Cross-Species Bi-Clustering Approach To Identifying Conserved Co-Regulated Genes, Jiangwen Sun, Zongliang Jiang, Xiuchun Tian, Jinbo Bi

Faculty Publications

© 2016 The Author 2016. Published by Oxford University Press. Motivation: A growing number of studies have explored the process of pre-implantation embryonic development of multiple mammalian species. However, the conservation and variation among different species in their developmental programming are poorly defined due to the lack of effective computational methods for detecting co-regularized genes that are conserved across species. The most sophisticated method to date for identifying conserved co-regulated genes is a two-step approach. This approach first identifies gene clusters for each species by a cluster analysis of gene expression data, and subsequently computes the overlaps of clusters identified …

Go to article

Cellulose Structural Polymorphism In Plant Primary Cell Walls Investigated By High-Field 2d Solid-State Nmr Spectroscopy And Density Functional Theory Calculations, Tuo Wang, Hui Yang, James D. Kubicki, Mei Hong Jun 2016

Cellulose Structural Polymorphism In Plant Primary Cell Walls Investigated By High-Field 2d Solid-State Nmr Spectroscopy And Density Functional Theory Calculations, Tuo Wang, Hui Yang, James D. Kubicki, Mei Hong

Faculty Publications

© 2016 American Chemical Society. The native cellulose of bacterial, algal, and animal origins has been well studied structurally using X-ray and neutron diffraction and solid-state NMR spectroscopy, and is known to consist of varying proportions of two allomorphs, Iα and Iβ, which differ in hydrogen bonding, chain packing, and local conformation. In comparison, cellulose structure in plant primary cell walls is much less understood because plant cellulose has lower crystallinity and extensive interactions with matrix polysaccharides. Here we have combined two-dimensional magic-angle-spinning (MAS) solid-state nuclear magnetic resonance (solid-state NMR) spectroscopy at high magnetic fields with density functional theory (DFT) …

Go to article

Exposure To Environmentally Persistent Free Radicals During Gestation Lowers Energy Expenditure And Impairs Skeletal Muscle Mitochondrial Function In Adult Mice, Erin J. Stephenson, Alyse Ragauskas, Sridhar Jaligama, Jeanna R. Redd, Jyothi Parvathareddy, Matthew J. Peloquin, Jordy Saravia, Joan C. Han, Stephania A. Cormier, Dave Bridges Jun 2016

Exposure To Environmentally Persistent Free Radicals During Gestation Lowers Energy Expenditure And Impairs Skeletal Muscle Mitochondrial Function In Adult Mice, Erin J. Stephenson, Alyse Ragauskas, Sridhar Jaligama, Jeanna R. Redd, Jyothi Parvathareddy, Matthew J. Peloquin, Jordy Saravia, Joan C. Han, Stephania A. Cormier, Dave Bridges

Faculty Publications

© 2016 the American Physiological Society. We have investigated the effects of in utero exposure to environmentally persistent free radicals (EPFRs) on growth, metabolism, energy utilization, and skeletal muscle mitochondria in a mouse model of diet-induced obesity. Pregnant mice were treated with laboratory-generated, combustion derived particular matter (MCP230). The adult offspring were placed on a high-fat diet for 12 wk, after which we observed a 9.8% increase in their body weight. The increase in body size observed in the MCP230-exposed mice was not associated with increases in food intake but was associated with a reduction in physical activity and lower …

Go to article

Transcriptional Truncation Of The Long Coding Imprinted Gene Usp29, Hongzhi He, An Ye, Joomyeong Kim Jun 2016

Transcriptional Truncation Of The Long Coding Imprinted Gene Usp29, Hongzhi He, An Ye, Joomyeong Kim

Faculty Publications

© 2016 He et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. Usp29 (Ubiquitin-specific protease 29) is a paternally expressed gene located upstream of another imprinted gene Peg3. In the current study, the transcription of this long coding gene spanning a 250-kb genomic distance was truncated using a knockin allele. According to the results, paternal transmission of the mutant allele resulted in reduced body and litter sizes whereas the maternal transmission caused no …

Go to article

The Abiotic And Biotic Drivers Of Rapid Diversification In Andean Bellflowers (Campanulaceae), Laura P. Lagomarsino, Fabien L. Condamine, Alexandre Antonelli, Andreas Mulch, Charles C. Davis Jun 2016

The Abiotic And Biotic Drivers Of Rapid Diversification In Andean Bellflowers (Campanulaceae), Laura P. Lagomarsino, Fabien L. Condamine, Alexandre Antonelli, Andreas Mulch, Charles C. Davis

Faculty Publications

© 2016 New Phytologist Trust. The tropical Andes of South America, the world's richest biodiversity hotspot, are home to many rapid radiations. While geological, climatic, and ecological processes collectively explain such radiations, their relative contributions are seldom examined within a single clade. We explore the contribution of these factors by applying a series of diversification models that incorporate mountain building, climate change, and trait evolution to the first dated phylogeny of Andean bellflowers (Campanulaceae: Lobelioideae). Our framework is novel for its direct incorporation of geological data on Andean uplift into a macroevolutionary model. We show that speciation and extinction are …

Go to article

First Prev Next Last