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Mrna Levels Of Imprinted Genes In Bovine In Vivo Oocytes, Embryos And Cross Species Comparisons With Humans, Mice And Pigs, Zongliang Jiang, Hong Dong, Xinbao Zheng, Sadie L. Marjani, David M. Donovan, Jingbo Chen, Xiuchun Cindy Tian Dec 2015

Mrna Levels Of Imprinted Genes In Bovine In Vivo Oocytes, Embryos And Cross Species Comparisons With Humans, Mice And Pigs, Zongliang Jiang, Hong Dong, Xinbao Zheng, Sadie L. Marjani, David M. Donovan, Jingbo Chen, Xiuchun Cindy Tian

Faculty Publications

Twenty-six imprinted genes were quantified in bovine in vivo produced oocytes and embryos using RNA-seq. Eighteen were detectable and their transcriptional patterns were: largely decreased (MEST and PLAGL1); first decreased and then increased (CDKN1C and IGF2R); peaked at a specific stage (PHLDA2, SGCE, PEG10, PEG3, GNAS, MEG3, DGAT1, ASCL2, NNAT, and NAP1L5); or constantly low (DIRAS3, IGF2, H19 and RTL1). These patterns reflect mRNAs that are primarily degraded, important at a specific stage, or only required at low quantities. The mRNAs for several genes were surprisingly abundant. For instance, transcripts for the maternally imprinted MEST and PLAGL1, were high in …

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Epigenetic Instability At Imprinting Control Regions In A KrasG12d-Induced T-Cell Neoplasm, Corey L. Bretz, Ingeborg M. Langohr, Suman Lee, Joomyeong Kim Dec 2015

Epigenetic Instability At Imprinting Control Regions In A KrasG12d-Induced T-Cell Neoplasm, Corey L. Bretz, Ingeborg M. Langohr, Suman Lee, Joomyeong Kim

Faculty Publications

© 2015 Taylor & Francis Group, LLC. Although aberrant DNA methylation within imprinted domains has been reported in a variety of neoplastic diseases, it remains largely uncharacterized in the context of carcinogenesis. In this study, we induced T-cell lymphoma in mice by employing a breeding scheme involving mouse strains, LSL-KrasG12D and MMTV-Cre. We then systematically surveyed imprinted domains for DNA methylation changes during tumor progression using combined bisulfite restriction analysis and NGS-based bisulfite sequencing. We detected hyper- or hypo-methylation at the imprinting control regions (ICRs) of the Dlk1, Peg10, Peg3, Grb10, and Gnas domains. These DNA methylation changes at ICRs …

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Dna-Binding Motif Of The Imprinted Transcription Factor Peg3, Suman Lee, An Ye, Joomyeong Kim Dec 2015

Dna-Binding Motif Of The Imprinted Transcription Factor Peg3, Suman Lee, An Ye, Joomyeong Kim

Faculty Publications

© 2015 Lee 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. Peg3 is an imprinted gene that is predicted to encode a DNA-binding zinc finger protein. This was previously demonstrated through Chromatin ImmunoPrecipitation-based Sequencing experiments. In the current study, we reanalyzed the previous ChIP-Seq results and further characterized the DNA-binding motif of PEG3. According to the results, PEG3 binds to the promoters and enhancers of a subset of genes that are closely …

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Faculty Senate Newsletter, Holiday 2015, Louisiana State University And Agricultural & Mechanical College Dec 2015

Faculty Senate Newsletter, Holiday 2015, Louisiana State University And Agricultural & Mechanical College

LSU Faculty Senate Publications

Message from President: At the end of the LSU-Texas A&M game, television captured Les Miles standing in the embrace of a burly player, insistently singing the LSU alma mater. Any comedy that might have inhered in such an effort at roughhouse opera deteriorated under the impression that the performance was sending a bullying message to LSU officials about the alleged high level of public support for a coach rumored to be fighting for his job. By exploiting a musical component from the sacraments of the academic community for exclusively personal ends, the beleaguered coach helped everyone to understand what has …

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Breeding Technologies In U.S. Meat Goat Production: Who Are The Adopters And How Does Adoption Impact Productivity?, Jeffrey Gillespie, Berdikul Qushim, Narayan Nyaupane, Kenneth Mcmillin Dec 2015

Breeding Technologies In U.S. Meat Goat Production: Who Are The Adopters And How Does Adoption Impact Productivity?, Jeffrey Gillespie, Berdikul Qushim, Narayan Nyaupane, Kenneth Mcmillin

Faculty Publications

Copyright 2015 Northeastern Agricultural and Resource Economics Association. Adoption of advanced breeding technologies and management practices (BTMP) in U.S. meat goat production and their impact were examined. Adopters generally had larger-scale operations, used rotational grazing and/or dry lot systems, and sold larger percentages of animals for breeding and show purposes. Farmer demographics and farm variables also influenced adoption. Complementarity of adoption was found-adopters of one BTMP tended to adopt other BTMPs. Measures of productivity and profitability were not affected by adoption. Goat breed, farmer experience, production system used, and specialization influenced productivity, and farm size had the greatest influence on …

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Tissue-Specific Contributions Of Paternally Expressed Gene 3 In Lactation And Maternal Care Of Mus Musculus, Wesley D. Frey, Joomyeong Kim Dec 2015

Tissue-Specific Contributions Of Paternally Expressed Gene 3 In Lactation And Maternal Care Of Mus Musculus, Wesley D. Frey, Joomyeong Kim

Faculty Publications

© 2015 Frey, Kim.This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in anymedium, provided the original author and source are credited. Paternally Expressed Gene 3 (Peg3) is an imprinted gene that controls milk letdown and maternal-caring behaviors. In this study, a conditional knockout allele has been developed in Mus musculus to further characterize these known functions of Peg3 in a tissue-specific manner. The mutant line was first crossed with a germline Cre. The progeny of this cross displayed growth retardation phenotypes. This is consistent with …

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The Seesaw Effect Of Winter Temperature Change On The Recruitment Of Cotton Bollworms Helicoverpa Armigera Through Mismatched Phenology, Gadi V.P. Reddy, Peijian Shi, Cang Hui, Xiaofei Cheng, Fang Ouyang, Feng Ge Dec 2015

The Seesaw Effect Of Winter Temperature Change On The Recruitment Of Cotton Bollworms Helicoverpa Armigera Through Mismatched Phenology, Gadi V.P. Reddy, Peijian Shi, Cang Hui, Xiaofei Cheng, Fang Ouyang, Feng Ge

Faculty Publications

Knowing how climate change affects the population dynamics of insect pests is critical for the future of integrated pest management. Rising winter temperatures from global warming can drive increases in outbreaks of some agricultural pests. In contrast, here we propose an alternative hypothesis that both extremely cold and warm winters can mismatch the timing between the eclosion of overwintering pests and the flowering of key host plants. As host plants normally need higher effective cumulative temperatures for flowering than insects need for eclosion, changes in flowering time will be less dramatic than changes in eclosion time, leading to a mismatch …

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Examining Louisiana State University College Of Agriculture Students’ Perceived Motivators And Barriers To Participation In International Experiences, J. C. Bunch, J. Joey Blackburn, Shelli Dan Jean, Kristin E. Stair, Leslie D. Blanchard Dec 2015

Examining Louisiana State University College Of Agriculture Students’ Perceived Motivators And Barriers To Participation In International Experiences, J. C. Bunch, J. Joey Blackburn, Shelli Dan Jean, Kristin E. Stair, Leslie D. Blanchard

Faculty Publications

© 2015, Assoc. Int. Agricultural and Extension Education. All rights reserved. In an effort to internationalize higher education and produce globally competent professionals, many universities have increased the time and financial assets put toward promoting an international experience (IE). Research supports using an IE to supplement international education efforts and help students develop the global perspective and experience needed to succeed in the workplace. The purpose of this study was to determine College of Agriculture (CoA) students’ perceptions of IE participation, and identify factors that CoA students perceived as barriers and motivators to participation in an IE. CoA students were …

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Mathematics Library News 14, Aaron Lercher Dec 2015

Mathematics Library News 14, Aaron Lercher

Faculty Publications

No abstract provided.

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Failure Of A Heterologous Recombinant Sca5/Ompb Protein-Based Vaccine To Elicit Effective Protective Immunity Against Rickettsia Rickettsii Infections In C3h/Hen Mice, Sean P. Riley, Marissa M. Cardwell, Yvonne G. Chan, Ludovic Pruneau, Fabio Del Piero, Juan J. Martinez Dec 2015

Failure Of A Heterologous Recombinant Sca5/Ompb Protein-Based Vaccine To Elicit Effective Protective Immunity Against Rickettsia Rickettsii Infections In C3h/Hen Mice, Sean P. Riley, Marissa M. Cardwell, Yvonne G. Chan, Ludovic Pruneau, Fabio Del Piero, Juan J. Martinez

Faculty Publications

Spotted fever group (SFG) rickettsial species are obligate intracellular tick-borne pathogens that are responsible for important human diseases. Previous reports have demonstrated the feasibility of using recombinant surface cell antigen Sca5/OmpB to elicit protective immunity against homologous challenges using murine models of Mediterranean spotted fever and Rocky Mountain spotted fever. In addition, the feasibility of generating cross-protective immunity against related rickettsial species has also been established, but the molecular basis for these phenomena was not explored. Here, we demonstrate that vaccination of C3H/HeN mice with a recombinant OmpB domain derived from Rickettsia conorii induced high titer humoral immune responses that …

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Island Vs. Countryside Biogeography: An Examination Of How Amazonian Birds Respond To Forest Clearing And Fragmentation, Jared D. Wolfe, Philip C. Stouffer, Karl Mokross, Luke L. Powell, Marina M. Anciaes Dec 2015

Island Vs. Countryside Biogeography: An Examination Of How Amazonian Birds Respond To Forest Clearing And Fragmentation, Jared D. Wolfe, Philip C. Stouffer, Karl Mokross, Luke L. Powell, Marina M. Anciaes

Faculty Publications

Avian diversity in fragmented Amazonian landscapes depends on a balance between extinction and colonization in cleared and disturbed areas. Regenerating forest facilitates bird dispersal within degraded Amazonian landscapes and may tip the balance in favor of persistence in habitat patches. Determining the response of Amazonian birds to fragmentation may be hindered because many species use adjacent second growth matrices thereby limiting the applicability of island biogeography to predict species loss; alternatively, a countryside biogeographic framework to evaluate the value of regenerating forest may be more appropriate. Here, we used point-count and capture data to compare Amazonian bird communities among continuous …

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Phylogeography Of The Military Macaw (Ara Militaris) And The Great Green Macaw (A. Ambiguus) Based On Mtdna Sequence Data, Jessica R. Eberhard, Eduardo E. Iñigo-Elias, Ernesto Enkerlin-Hoeflich, E. Paùl Cun Dec 2015

Phylogeography Of The Military Macaw (Ara Militaris) And The Great Green Macaw (A. Ambiguus) Based On Mtdna Sequence Data, Jessica R. Eberhard, Eduardo E. Iñigo-Elias, Ernesto Enkerlin-Hoeflich, E. Paùl Cun

Faculty Publications

© 2015 The Wilson Ornithological Society. The Military Macaw (Ara militaris) and the Great Green Macaw (A. ambiguus) are species whose close relationship is reflected in their morphological similarity as well as their geographic ranges. Military Macaws have a disjunct distribution, found in Mexico as well as several areas in South America, while Great Green Macaws have two or more disjunct populations from Honduras to eastern Ecuador. We used mitochondrial sequence data to examine the phylogenetic relationships between these two species, and also among representative samples across their ranges. Our data clearly support recognition of the two species as being …

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The Effect Of Dietary Salt Intake On The Subcellular Distribution Of Epithelial Na+ Channels In Vasopressin And Oxytocin Synthesizing Neurons In The Rat Hypothalamus, Richard Frank Guidry Dec 2015

The Effect Of Dietary Salt Intake On The Subcellular Distribution Of Epithelial Na+ Channels In Vasopressin And Oxytocin Synthesizing Neurons In The Rat Hypothalamus, Richard Frank Guidry

Honors Capstones

No abstract provided.

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Novel Mode Of Defective Neural Tube Closure In The Non-Obese Diabetic (Nod) Mouse Strain, J. Michael Salbaum, Claudia Kruger, Jacalyn Macgowan, Nils J. Herion, David Burk, Claudia Kappen Nov 2015

Novel Mode Of Defective Neural Tube Closure In The Non-Obese Diabetic (Nod) Mouse Strain, J. Michael Salbaum, Claudia Kruger, Jacalyn Macgowan, Nils J. Herion, David Burk, Claudia Kappen

Faculty Publications

Failure to close the neural tube results in birth defects, with severity ranging from spina bifida to lethal anencephaly. Few genetic risk factors for neural tube defects are known in humans, highlighting the critical role of environmental risk factors, such as maternal diabetes. Yet, it is not well understood how altered maternal metabolism interferes with embryonic development, and with neurulation in particular. We present evidence from two independent mouse models of diabetic pregnancy that identifies impaired migration of nascent mesodermal cells in the primitive streak as the morphogenetic basis underlying the pathogenesis of neural tube defects. We conclude that perturbed …

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Fetal Programming In Meat Production, Min Du, Bo Wang, Xing Fu, Qiyuan Yang, Mei Jun Zhu Nov 2015

Fetal Programming In Meat Production, Min Du, Bo Wang, Xing Fu, Qiyuan Yang, Mei Jun Zhu

Faculty Publications

© 2015 Elsevier Ltd. Nutrient fluctuations during the fetal stage affects fetal development, which has long-term impacts on the production efficiency and quality of meat. During the early development, a pool of mesenchymal progenitor cells proliferate and then diverge into either myogenic or adipogenic/fibrogenic lineages. Myogenic progenitor cells further develop into muscle fibers and satellite cells, while adipogenic/fibrogenic lineage cells develop into adipocytes, fibroblasts and resident fibro-adipogenic progenitor cells. Enhancing the proliferation and myogenic commitment of progenitor cells during fetal development enhances muscle growth and lean production in offspring. On the other hand, promoting the adipogenic differentiation of adipogenic/fibrogenic progenitor …

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Inhibition Of Cell Adhesion And Immune Responses In The Mouse Model Of Collagen-Induced Arthritis With A Peptidomimetic That Blocks Cd2-Cd58 Interface Interactions, Ameya S. Gokhale, Rushikesh Sable, Jason D. Walker, Leslie Mclaughlin, Konstantin G. Kousoulas, Seetharama D. Jois Nov 2015

Inhibition Of Cell Adhesion And Immune Responses In The Mouse Model Of Collagen-Induced Arthritis With A Peptidomimetic That Blocks Cd2-Cd58 Interface Interactions, Ameya S. Gokhale, Rushikesh Sable, Jason D. Walker, Leslie Mclaughlin, Konstantin G. Kousoulas, Seetharama D. Jois

Faculty Publications

© 2015 Wiley Periodicals, Inc. CD2 and CD58 are two important costimulatory molecules involved in generating the signal II required for normal immune signaling. However, this interaction can be targeted to be of benefit in cases of abnormal immune signaling seen in autoimmune diseases. Our objective in this study was to design a peptidomimetic (compound 7) based on a β-strand structure of the adhesion domain of CD2 protein to inhibit CD2-CD58 protein-protein interaction and its effect on immunomodulation in the collagen-induced arthritis (CIA) model. The ability of compound 7 to bind to CD58 protein was assessed using flow cytometry. The …

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Functional Conservation In The Siamese-Related Family Of Cyclin-Dependent Kinase Inhibitors In Land Plants, Narender Kumar, Hirofumi Harashima, Shweta Kalve, Jonathan Bramsiepe, Kai Wang, Bulelani L. Sizani, Laura L. Bertrand, Matthew C. Johnson, Christopher Faulk, Renee Dale, L. Alice Simmons, Michelle L. Churchman, Keiko Sugimoto, Naohiro Kato, Maheshi Dasanayake, Gerrit Beemster, Arp Schnittger, John C. Larkin Nov 2015

Functional Conservation In The Siamese-Related Family Of Cyclin-Dependent Kinase Inhibitors In Land Plants, Narender Kumar, Hirofumi Harashima, Shweta Kalve, Jonathan Bramsiepe, Kai Wang, Bulelani L. Sizani, Laura L. Bertrand, Matthew C. Johnson, Christopher Faulk, Renee Dale, L. Alice Simmons, Michelle L. Churchman, Keiko Sugimoto, Naohiro Kato, Maheshi Dasanayake, Gerrit Beemster, Arp Schnittger, John C. Larkin

Faculty Publications

© 2015 American Society of Plant Biologists. All rights reserved. The best-characterized members of the plant-specific SIAMESE-RELATED (SMR) family of cyclin-dependent kinase inhibitors regulate the transition from the mitotic cell cycle to endoreplication, also known as endoreduplication, an altered version of the cell cycle in which DNA is replicated without cell division. Some other family members are implicated in cell cycle responses to biotic and abiotic stresses. However, the functions of most SMRs remain unknown, and the specific cyclin- dependent kinase complexes inhibited by SMRs are unclear. Here, we demonstrate that a diverse group of SMRs, including an SMR from …

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Cellular And Molecular Remodeling Of Inguinal Adipose Tissue Mitochondria By Dietary Methionine Restriction, Yuvraj N. Patil, Kelly N. Dille, David H. Burk, Cory C. Cortez, Thomas W. Gettys Nov 2015

Cellular And Molecular Remodeling Of Inguinal Adipose Tissue Mitochondria By Dietary Methionine Restriction, Yuvraj N. Patil, Kelly N. Dille, David H. Burk, Cory C. Cortez, Thomas W. Gettys

Faculty Publications

© 2015 Elsevier Inc. Dietary methionine restriction (MR) produces a coordinated series of biochemical and physiological responses that improve biomarkers of metabolic health, increase energy expenditure, limit fat accretion and improve overall insulin sensitivity. Inguinal white adipose tissue (IWAT) is a primary target and site of action where the diet initiates transcriptional programs linked to enhancing both synthesis and oxidation of lipid. Using a combination of ex vivo approaches to assess dietary effects on cell morphology and function, we report that dietary MR produced a fourfold increase in multilocular, UCP1-expressing cells within this depot in conjunction with significant increases in …

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Darwin’S Dice: The Idea Of Chance In The Thought Of Charles Darwin, Charles H. Pence Nov 2015

Darwin’S Dice: The Idea Of Chance In The Thought Of Charles Darwin, Charles H. Pence

Faculty Publications

No abstract provided.

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Changes In Habitat Use At Rain Forest Edges Through Succession: A Case Study Of Understory Birds In The Brazilian Amazon, Luke L. Powell, Gustavo Zurita, Jared D. Wolfe, Erik I. Johnson, Philip C. Stouffer Nov 2015

Changes In Habitat Use At Rain Forest Edges Through Succession: A Case Study Of Understory Birds In The Brazilian Amazon, Luke L. Powell, Gustavo Zurita, Jared D. Wolfe, Erik I. Johnson, Philip C. Stouffer

Faculty Publications

Primary tropical rain forests are being rapidly perforated with new edges via roads, logging, and pastures, and vast areas of secondary forest accumulate following abandonment of agricultural lands. To determine how insectivorous Amazonian understory birds respond to edges between primary rain forest and three age classes of secondary forest, we radio-tracked two woodcreepers (Glyphorynchus spirurus, N = 17; Xiphorhynchus pardalotus, N = 18) and a terrestrial antthrush (Formicarius colma, N = 19). We modeled species-specific response to distance to forest edge (a continuous variable) based on observations at varying distances from the primary-secondary forest interface. All species avoided 8-14-yr-old secondary …

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Curcumin Conjugates For Treating And Preventing Cancers, William Hansel, Sita Aggarwal, Robert P. Hammer Oct 2015

Curcumin Conjugates For Treating And Preventing Cancers, William Hansel, Sita Aggarwal, Robert P. Hammer

Pennington Biomedical Research Center Patents

Conjugating LHRH to curcumin (LHRH-Curcumin) substantially enhances the bioavailability of curcumin, targets it to cells expressing LHRH receptors, facilitates intravenous administration, and increases the anti-cancer efficacy of curcumin. The conjugate may be used against cancer cells that express the LHRH receptor: pancreas, prostate, breast, testicular, uterine, ovarian, melanoma. LH-Curcumin conjugates may be used against cancer cells that express the LH receptor: prostate, breast, ovary, testis, uterus, pancreas, and melanoma.

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Improving Healthspan Via Changes In Gut Microbiota And Fermentation, Michael J. Keenan, Maria L. Marco, Donald K. Ingram, Roy J. Martin Oct 2015

Improving Healthspan Via Changes In Gut Microbiota And Fermentation, Michael J. Keenan, Maria L. Marco, Donald K. Ingram, Roy J. Martin

Faculty Publications

Dietary resistant starch impact on intestinal microbiome and improving healthspan is the topic of this review. In the elderly population, dietary fiber intake is lower than recommended. Dietary resistant starch as a source of fiber produces a profound change in gut microbiota and fermentation in animal models of aging. Dietary resistant starch has the potential for improving healthspan in the elderly through multiple mechanisms as follows: (1) enhancing gut microbiota profile and production of short-chain fatty acids, (2) improving gut barrier function, (3) increasing gut peptides that are important in glucose homeostasis and lipid metabolism, and (4) mimicking many of …

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Identification Of The Substrate Access Portal Of 5-Lipoxygenase, Sunayana Mitra, Sue G. Bartlett, Marcia E. Newcomer Oct 2015

Identification Of The Substrate Access Portal Of 5-Lipoxygenase, Sunayana Mitra, Sue G. Bartlett, Marcia E. Newcomer

Faculty Publications

© 2015 American Chemical Society. The overproduction of inflammatory lipid mediators derived from arachidonic acid contributes to asthma and cardiovascular diseases, among other pathologies. Consequently, the enzyme that initiates the synthesis of pro-inflammatory leukotrienes, 5-lipoxygenase (5-LOX), is a target for drug design. The crystal structure of 5-LOX revealed a fully encapsulated active site; thus the point of substrate entry is not known. We asked whether a structural motif, a "cork" present in 5-LOX but absent in other mammalian lipoxygenases, might be ejected to allow substrate access. Our results indicate that reduction of cork volume facilitates access to the active site. …

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Ethanol Enhances Arsenic-Induced Cyclooxygenase-2 Expression Via Both Nfat And Nf-Κb Signalings In Colorectal Cancer Cells, Lei Wang, John Andrew Hitron, James T.F. Wise, Young Ok Son, Ram Vinod Roy, Donghern Kim, Jin Dai, Poyil Pratheeshkumar, Zhuo Zhang, Mei Xu, Jia Luo, Xianglin Shi Oct 2015

Ethanol Enhances Arsenic-Induced Cyclooxygenase-2 Expression Via Both Nfat And Nf-Κb Signalings In Colorectal Cancer Cells, Lei Wang, John Andrew Hitron, James T.F. Wise, Young Ok Son, Ram Vinod Roy, Donghern Kim, Jin Dai, Poyil Pratheeshkumar, Zhuo Zhang, Mei Xu, Jia Luo, Xianglin Shi

Faculty Publications

Arsenic is a known carcinogen to humans, and chronic exposure to environmental arsenic is a worldwide health concern. As a dietary factor, ethanol carries a well-established risk for malignancies, but the effects of co-exposure to arsenic and ethanol on tumor development are not well understood. In the present study, we hypothesized that ethanol would enhance the function of an environmental carcinogen such as arsenic through increase in COX-2 expression. Our in vitro results show that ethanol enhanced arsenic-induced COX-2 expression. We also show that the increased COX-2 expression associates with intracellular ROS generation, up-regulated AKT signaling, with activation of both …

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New Perspectives On An Iconic Landscape From Comparative International Long-Term Ecological Research, Evelyn E. Gaiser, Elizabeth P. Anderson, Edward Castañeda-Moya, Ligia Collado-Vides, James W.F. Ourqurean, Michael R. Heithaus, Rudolf Jaffé, David Lagomasino, Nicholas J. Oehm, Rene M. Price, Victor H. Rivera-Monroy, Rinku Roy Chowdhury, Tiffany G. Troxler Oct 2015

New Perspectives On An Iconic Landscape From Comparative International Long-Term Ecological Research, Evelyn E. Gaiser, Elizabeth P. Anderson, Edward Castañeda-Moya, Ligia Collado-Vides, James W.F. Ourqurean, Michael R. Heithaus, Rudolf Jaffé, David Lagomasino, Nicholas J. Oehm, Rene M. Price, Victor H. Rivera-Monroy, Rinku Roy Chowdhury, Tiffany G. Troxler

Faculty Publications

Iconic ecosystems like the Florida Coastal Everglades can serve as sentinels of environmental change from local to global scales. This characteristic can help inform general theory about how and why ecosystems transform, particularly if distinctive ecosystem properties are studied over long time scales and compared to those of similar ecosystems elsewhere. Here we review the ways in which long-term, comparative, international research has provided perspectives on iconic features of the Everglades that have, in turn, informed general ecosystem paradigms. Studies in other comparable wetlands from the Caribbean to Australia have shed light on distinctive and puzzling aspects such as the …

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The Mechanosensory Lateral Line Is Used To Assess Opponents And Mediate Aggressive Behaviors During Territorial Interactions In An African Cichlid Fish, Julie M. Butler, Karen P. Maruska Oct 2015

The Mechanosensory Lateral Line Is Used To Assess Opponents And Mediate Aggressive Behaviors During Territorial Interactions In An African Cichlid Fish, Julie M. Butler, Karen P. Maruska

Faculty Publications

© 2015. Published by The Company of Biologists Ltd. Fish must integrate information from multiple sensory systems to mediate adaptive behaviors. Visual, acoustic and chemosensory cues provide contextual information during social interactions, but the role of mechanosensory signals detected by the lateral line system during aggressive behaviors is unknown. The aim of this study was first to characterize the lateral line system of the African cichlid fish Astatotilapia burtoni and second to determine the role of mechanoreception during agonistic interactions. The A. burtoni lateral line system is similar to that of many other cichlid fishes, containing lines of superficial neuromasts …

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Phylogenetic Signals In Host-Parasite Associations For Neotropical Bats And Nearctic Desert Rodents, Steven J. Presley, Tad Dallas, Brian T. Klingbeil, Michael R. Willig Oct 2015

Phylogenetic Signals In Host-Parasite Associations For Neotropical Bats And Nearctic Desert Rodents, Steven J. Presley, Tad Dallas, Brian T. Klingbeil, Michael R. Willig

Faculty Publications

© 2015 The Linnean Society of London. Hosts and their parasites have strong ecological and evolutionary relationships, with hosts representing habitats and resources for parasites. In the present study, we use approaches developed to evaluate the statistical dependence of species trait values on phylogenetic relationships to determine whether host-parasite relationships (i.e. parasite infections) are contingent on host phylogeny. If host-parasite relationships are contingent on the ability of hosts to provide habitat or resources to parasites, and if host phylogeny is an effective surrogate for among-host variation in habitat and resource quality, host-parasite relationships should evince phylogenetic signals (i.e. be contingent …

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Host Promiscuity In Symbiont Associations Can Influence Exotic Legume Establishment And Colonization Of Novel Ranges, Metha M. Klock, Luke G. Barrett, Peter H. Thrall, Kyle E. Harms Oct 2015

Host Promiscuity In Symbiont Associations Can Influence Exotic Legume Establishment And Colonization Of Novel Ranges, Metha M. Klock, Luke G. Barrett, Peter H. Thrall, Kyle E. Harms

Faculty Publications

© 2015 John Wiley & Sons Ltd. Aim: Invasive Acacia species have negatively impacted natural areas in multiple regions around the globe. Almost 400 Acacia species have been introduced outside their native ranges in Australia; approximately 6% have become invasive, 12% are naturalized, and 82% have no record of naturalization or invasion. This variation in invasiveness provides a comparative framework in which to examine mechanisms that either promote or constrain establishment and colonization of species in novel regions. Here, we experimentally examine the role that the legume-rhizobia symbiosis plays in the differential invasiveness of acacias introduced outside their native Australian …

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Faculty Senate Newsletter, October 2015, Louisiana State University And Agricultural & Mechanical College Oct 2015

Faculty Senate Newsletter, October 2015, Louisiana State University And Agricultural & Mechanical College

LSU Faculty Senate Publications

Message from President: Unanimity or the appearance thereof is often a symptom of error. Unanimity or its various affiliates—commitment; team spirit; the embrace of a corporate culture— usually emerge from uncertainty, as happens when players are asked to commit to a plan in order to win a hard game or when ambitious beginners avoid questioning their superiors lest they seem out of sync with purportedly shared strategies or goals. Currently, few words, ideas, or practices enjoy more unanimous support than does “collaboration.” Academic professionals hear the word ceaselessly. We are called on to collaborate, we are offered prizes for collaborative …

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Knockdown Of Brm And Baf170, Components Of Chromatin Remodeling Complex, Facilitates Reprogramming Of Somatic Cells, Zongliang Jiang, Yong Tang, Xueming Zhao, Mingyuan Zhang, David M. Donovan, Xiuchun Cindy Tian Oct 2015

Knockdown Of Brm And Baf170, Components Of Chromatin Remodeling Complex, Facilitates Reprogramming Of Somatic Cells, Zongliang Jiang, Yong Tang, Xueming Zhao, Mingyuan Zhang, David M. Donovan, Xiuchun Cindy Tian

Faculty Publications

© Copyright 2015, Mary Ann Liebert, Inc. 2015. The SWI/SNF (SWItch/Sucrose NonFermentable or BAF, Brg/Brahma-associated factors) complexes are epigenetic modifiers of chromatin structure and undergo progressive changes in subunit composition during cellular differentiation. For example, in embryonic stem cells, esBAF contains Brg1 and Baf155, while their homologs, Brm and Baf170, are present in BAF of somatic cells. In this study, we sought to determine whether Brm and Baf170 play any roles in induced pluripotent stem cell (iPSC) reprogramming by using shRNA-mediated knockdown studies in the mouse model. We found that knocking down Brm during early, mid, and late stages (days …

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