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2014

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Traceability Implementation In Organic Farming: Case Study, Chamomile Tea Production, Shaima Ibrahim Jan 2014

Traceability Implementation In Organic Farming: Case Study, Chamomile Tea Production, Shaima Ibrahim

Theses and Dissertations

Implementing a traceability plan in an herbal production plant is a complex task. In this study an attempt to integrate food safety, quality and traceability through the different stages of the organic German Chamomile (Matricaria recutita) production chain was made. First, all the current relevant international laws, regulations and standards regarding traceability, safety and quality, with emphasis on how and why they are necessary for any food production chain, were set forward. Second, physico-chemical and microbiological analyses were run throughout the different processing stages of production, for four different Chamomile batches produced over the same season using the same farming …


Panel Ii: Balancing National Security And Transparency In Government Data Collection, Nate Cardozo, Mariko Hirose, Jonathan Manes, Ira Rubinstein, Christopher Wolf Jan 2014

Panel Ii: Balancing National Security And Transparency In Government Data Collection, Nate Cardozo, Mariko Hirose, Jonathan Manes, Ira Rubinstein, Christopher Wolf

Cardozo Arts & Entertainment Law Journal

No abstract provided.


Panel I: Disclosure And Notice Practices In Private Data Collection, Lorrie Cranor, Brett Frischmann, Ryan Harkins, Helen Nissenbaum Jan 2014

Panel I: Disclosure And Notice Practices In Private Data Collection, Lorrie Cranor, Brett Frischmann, Ryan Harkins, Helen Nissenbaum

Cardozo Arts & Entertainment Law Journal

No abstract provided.


Linking Resilience And Good Governance: A Literature Review, Nikki Bedi, Madilynn Bishop, Ukiah Hawkins, Olivia Miller, Rodrigo Pedraza, Anna Preble, Angela Rico-Rairan Jan 2014

Linking Resilience And Good Governance: A Literature Review, Nikki Bedi, Madilynn Bishop, Ukiah Hawkins, Olivia Miller, Rodrigo Pedraza, Anna Preble, Angela Rico-Rairan

Anthós

Natural or manmade shocks and stresses affect communities in a variety of ways. One way that researchers have tried to isolate the conditions that lead to a thriving community in the face of disaster is the study of resilience. Resilience is the capacity of communities in complex socio-ecological systems to learn, cope, adapt, and transform in the face of shocks and stresses. A key part of resilience is the existence of good governance, which Mercy Corps has identified as a process of decision-making that is accountable, transparent, just, responsive and participatory. The pursuit of good governance can be a beneficial …


A Comparison Of Different Treatments For Mesothelioma, Samira Rezaei Jan 2014

A Comparison Of Different Treatments For Mesothelioma, Samira Rezaei

Anthós

The goal of this research was to survey the literature of studies on mesothelioma treatments and compare their rates of success. The focus was on radiation therapy which is used with chemotherapy or surgery treatment for this specific type of cancer. The research is based on the chosen treatments of thirteen patients who shared their stories on different websites. The number of survived years for these patients was compared. The results show that the average number of years survived in patients who used mind-body therapy is greater than other patients who use radiation therapy as palliation with chemotherapy, surgery treatment …


Managing The "Republic Of Ngos": Accountability And Legitimation Problems Facing The Un Cluster System, J. Benton Heath Jan 2014

Managing The "Republic Of Ngos": Accountability And Legitimation Problems Facing The Un Cluster System, J. Benton Heath

Vanderbilt Journal of Transnational Law

This Article critically assesses the crucial but troubled system for the coordination of international humanitarian assistance--the UN "cluster approach." Regardless of whether the cluster approach actually helps in disaster response, it exercises substantial power over affected populations by assigning competences and leadership roles. The built-in mechanisms for controlling this power are unworkable because they ultimately fail to resolve the tension between humanitarian organizations' autonomy and the need for coordination. This Article identifies the emergence of an alternative model of accountability, based on mutual monitoring and peer review. Drawing on theories of network governance and experimentalism, this Article teases out the …


Crossfit V. Alvies, United States District Court For The Northern District Of California Jan 2014

Crossfit V. Alvies, United States District Court For The Northern District Of California

Historical and Topical Legal Documents

No abstract provided.


Characterization Of The Biological Role Of A Putative Porphyromonas Gingivalis Rna-Binding Protein, Ramana Cvitkovic Jan 2014

Characterization Of The Biological Role Of A Putative Porphyromonas Gingivalis Rna-Binding Protein, Ramana Cvitkovic

Theses and Dissertations

Porphyromonas gingivalis, a gram-negative anaerobic bacterium, is a major etiological agent in the initiation and progression of severe forms of periodontal disease. Oral bacteria like P. gingivalis are subject to continually changing conditions as a consequence of host eating, oral hygiene patterns and subgingival temperatures. As such survival requires an adaptive response to environmental cues, but little is known about the mechanism by which P. gingivalis controls co- and post-transcriptional regulation of RNA levels and potentially protein expression. RNA-binding proteins (RBPs) are evolutionarily conserved across species and are involved in such regulatory mechanisms. However, P. gingivalis currently has no identified …


Mothers Who Kill Children They Have Adopted, Katherine Elizabeth Sunder Jan 2014

Mothers Who Kill Children They Have Adopted, Katherine Elizabeth Sunder

Browse all Theses and Dissertations

A mother killing her child is a disturbing and puzzling crime. While extensive research has been conducted on mothers who kill their biological children, little information is known about mothers who kill children they have adopted. Previous research has suggested specific typologies and characteristics of mothers who kill their biological children. The current research reviews these typologies and investigates whether they can be applied to the mothers who kill adopted children. A review of the cases in the United States from 1993 through 2013 that involved mothers who killed children they had adopted was conducted. The similarities and differences between …


Did You Give The Government Your Baby’S Dna? Rethinking Consent In Newborn Screening, Sonia M. Suter Jan 2014

Did You Give The Government Your Baby’S Dna? Rethinking Consent In Newborn Screening, Sonia M. Suter

Minnesota Journal of Law, Science & Technology

No abstract provided.


Theory And Research From The Communication Field: Discourses That Constitute And Reflect Families, Kathleen M. Galvin, Dawn O. Braithwaite Jan 2014

Theory And Research From The Communication Field: Discourses That Constitute And Reflect Families, Kathleen M. Galvin, Dawn O. Braithwaite

Department of Communication Studies: Faculty Publications

From the disciplinary perspective of communication studies, we review theory and research in family communication, including a brief history of the family communication field; the contributions of a family communication perspective; and 5 theories of family communication: communication accommodation theory, communication privacy management theory, family communication patterns theory, narrative theor(ies), and relational dialectics theory. We then illustrate the concept of discourse dependence in family communication processes and discuss current trends in family communication research. We also suggest emerging directions for family communication scholarship.


Salmonella Enterica Serovar Typhimurium-Infected Pigs With Different Shedding Levels Exhibit Distinct Clinical, Peripheral Cytokine And Transcriptomic Immune Response Phenotypes, Susan Knetter, Shawn Bearson, Ting-Hua Huang, Dason Kurkiewicz, Martine Schroyen, Dan Nettleton, Daniel Berman, Valorie Cohen, Joan Lunney, Amanda Ramer-Tait, Michael Wannemuehler, Christopher Tuggle Jan 2014

Salmonella Enterica Serovar Typhimurium-Infected Pigs With Different Shedding Levels Exhibit Distinct Clinical, Peripheral Cytokine And Transcriptomic Immune Response Phenotypes, Susan Knetter, Shawn Bearson, Ting-Hua Huang, Dason Kurkiewicz, Martine Schroyen, Dan Nettleton, Daniel Berman, Valorie Cohen, Joan Lunney, Amanda Ramer-Tait, Michael Wannemuehler, Christopher Tuggle

Department of Food Science and Technology: Faculty Publications

Foodborne salmonellosis costs the US $2.7 billion/year, including $100.0 million in annual losses to pork producers. Pigs colonized with Salmonella are usually asymptomatic with varied severity and duration of fecal shedding. Thus, understanding the responses that result in less shedding may provide a mechanism for control. Fifty-four pigs were inoculated with Salmonella enterica serovar Typhimurium (ST) and clinical signs, fecal ST shedding, growth performance, peripheral cytokines and whole blood gene expression were measured. Persistently shedding (PS) pigs had longer pyrexia and elevated serum IL-1β, TNF-α and IFN-ϒcompared with low shedding (LS) pigs, while LS pigs had brief pyrexia, less shedding …


From Prediction To Function Using Evolutionary Genomics: Human-Specific Ecotypes Of Lactobacillus Reuteri Have Diverse Probiotic Functions, Jennifer K. Spinler, Amrita Sontakke, Emily B. Hollister, Susan F. Venable, Phaik Lyn Oh, Miriam A. Balderas, Delphine M.A. Saulnier, Toni-Ann Mistretta, Sridevi Devaraj, Jens Walter, James Versalovic, Sarah K. Highlander Jan 2014

From Prediction To Function Using Evolutionary Genomics: Human-Specific Ecotypes Of Lactobacillus Reuteri Have Diverse Probiotic Functions, Jennifer K. Spinler, Amrita Sontakke, Emily B. Hollister, Susan F. Venable, Phaik Lyn Oh, Miriam A. Balderas, Delphine M.A. Saulnier, Toni-Ann Mistretta, Sridevi Devaraj, Jens Walter, James Versalovic, Sarah K. Highlander

Department of Food Science and Technology: Faculty Publications

The vertebrate gut symbiont Lactobacillus reuteri has diversified into separate clades reflecting host origin. Strains show evidence of host adaptation, but how host-microbe coevolution influences microbial-derived effects on hosts is poorly understood. Emphasizing human-derived strains of L. reuteri, we combined comparative genomic analyses with functional assays to examine variations in host interaction among genetically distinct ecotypes. Within clade II or VI, the genomes of human-derived L. reuteri strains are highly conserved in gene content and at the nucleotide level. Nevertheless, they share only 70-90% of total gene content, indicating differences in functional capacity. Human-associated lineages are distinguished by genes related …


Update Of The Who/Iuis Allergen Nomenclature Database Based On Analysis Of Allergen Sequences, C. Radauer, A. Nandy, F. Ferreira, Richard E. Goodman, J. N. Larsen, J. Lidholm, A. Pomés, M. Raulf-Heimsoth, P. Rozynek, W. R. Thomas, Heimo Breiteneder Jan 2014

Update Of The Who/Iuis Allergen Nomenclature Database Based On Analysis Of Allergen Sequences, C. Radauer, A. Nandy, F. Ferreira, Richard E. Goodman, J. N. Larsen, J. Lidholm, A. Pomés, M. Raulf-Heimsoth, P. Rozynek, W. R. Thomas, Heimo Breiteneder

Department of Food Science and Technology: Faculty Publications

The IUIS Allergen Nomenclature Sub-Committee, under the auspices of the World Health Organization and the International Union of Immunological Societies, maintains the systematic nomenclature of allergenic proteins and publishes a database of approved allergen names on its Web site, www.allergen.org. In this paper, we summarize updates of allergen names approved at the meetings of the committee in 2011 through 2013. These changes reflect recent progress in identification, cloning, and sequencing of allergens. The goals of this update were to increase consistency in the classification of allergens, isoallergens, and variants and in the incorporation of the evolutionary classification of proteins into …


Grain Sorghum Whole Kernel Oil Lowers Plasma And Liver Cholesterol In Male Hamsters With Minimal Wax Involvement, Bo Hyun Lee, Thomas M. Carr, Curtis Weller, Susan L. Cuppett, Ismail M. Dweikat, Vicki Schlegel Jan 2014

Grain Sorghum Whole Kernel Oil Lowers Plasma And Liver Cholesterol In Male Hamsters With Minimal Wax Involvement, Bo Hyun Lee, Thomas M. Carr, Curtis Weller, Susan L. Cuppett, Ismail M. Dweikat, Vicki Schlegel

Department of Food Science and Technology: Faculty Publications

The lipid fraction of the grain sorghum whole kernel (GS-WK) (i.e., phytosterol rich oil or policosanol rich wax) responsible for lowering cholesterol in hamsters fed the crude lipid (wax + oil) was determined. As expected, hamsters fed an atherogenic diet for a four week period presented with higher plasma non-HDL plasma and liver esterified cholesterol than those on the low fat diet. However, the atherogenic diet containing 5% (w/w) oil significantly lowered non-HDL plasma and liver cholesterol. Although the 5% wax supplement did not affect either plasma or liver cholesterol, excreted neutral sterol and bile acid were slightly higher than …


Investigation Of Bacterial Diversity In The Feces Of Cattle Fed Different Diets, M. Kim, J. Kim, L. A. Kuehn, J. L. Bono, E. D. Berry, N. Kalchayanand, Harvey C. Freetly, Andrew K. Benson, J. E. Wells Jan 2014

Investigation Of Bacterial Diversity In The Feces Of Cattle Fed Different Diets, M. Kim, J. Kim, L. A. Kuehn, J. L. Bono, E. D. Berry, N. Kalchayanand, Harvey C. Freetly, Andrew K. Benson, J. E. Wells

Department of Food Science and Technology: Faculty Publications

The objective of this study is to investigate individual animal variation of bovine fecal microbiota including as affected by diets. Fecal samples were collected from 426 cattle fed 1 of 3 diets typically fed to feedlot cattle: 1) 143 steers fed finishing diet (83% dry-rolled corn, 13% corn silage, and 4% supplement), 2) 147 steers fed late growing diet (66% dry-rolled corn, 26% corn silage, and 8% supplement), and 3) 136 heifers fed early growing diet (70% corn silage and 30% alfalfa haylage). Bacterial 16S rRNA gene amplicons were determined from individual fecal samples using next-generation pyrosequencing technology. A total …


Activation Of Autophagy And Ampk By Gamma-Tocotrienol Suppresses The Adipogenesis In Human Adipose Derived Stem Cells, Lu Zhao, Jung-Heun Ha, Meshail Okla, Soonkyu Chung Jan 2014

Activation Of Autophagy And Ampk By Gamma-Tocotrienol Suppresses The Adipogenesis In Human Adipose Derived Stem Cells, Lu Zhao, Jung-Heun Ha, Meshail Okla, Soonkyu Chung

Department of Food Science and Technology: Faculty Publications

Scope: This study investigated the mechanistic details by which gamma-tocotrienol (γ-T3) manipulates adipocyte differentiation in human adipose derived stem cells (hASCs).

Methods and results: γ-T3 specifically inhibited the early stage of adipocyte differentiation by acting on downstream of C/EBP-β but upstream of C/EBP-α in hASCs. In searching a potential mechanism, we identified that γ-T3 promoted two catabolic signaling pathways: (i) AMP kinase (AMPK), and (ii) enhanced autophagy, as assessed by autophagic flux and cytosolic autophagosome (LC3II) accumulation. In addition, chronic exposure of γ-T3 induced caspase3-mediated apoptotic cell death. The blockage of AMPK by a dominant negative mutant of …


Development And Evolution Of Risk Assessment For Food Allergens, Rene W. R. Crevel, Joseph Baumert, Athanasia Baka, Geert Houben, André C. Knulst, Astrid Kruizinga, Stefano Luccioli, Stephen L. Taylor, Charlotte B. Madsen Jan 2014

Development And Evolution Of Risk Assessment For Food Allergens, Rene W. R. Crevel, Joseph Baumert, Athanasia Baka, Geert Houben, André C. Knulst, Astrid Kruizinga, Stefano Luccioli, Stephen L. Taylor, Charlotte B. Madsen

Department of Food Science and Technology: Faculty Publications

The need to assess the risk from food allergens derives directly from the need to manage effectively this food safety hazard. Work spanning the last two decades dispelled the initial thinking that food allergens were so unique that the risk they posed was not amenable to established risk assessment approaches and methodologies. Food allergens possess some unique characteristics, which make a simple safety assessment approach based on the establishment of absolute population thresholds inadequate. Dose distribution modelling of MEDs permitted the quantification of the risk of reaction at the population level and has been readily integrated with consumption and contamination …


Translating Reference Doses Into Allergen Management Practice: Challenges For Stakeholders, René W. R. Crevel, Joseph Baumert, Stefano Luccioli, Athanasia Baka, Sue Hattersley, Jonathan O.B. Hourihane, Stefan Ronsmans, Frans Timmermans, Rachel Ward, Yong-Joo Chung Jan 2014

Translating Reference Doses Into Allergen Management Practice: Challenges For Stakeholders, René W. R. Crevel, Joseph Baumert, Stefano Luccioli, Athanasia Baka, Sue Hattersley, Jonathan O.B. Hourihane, Stefan Ronsmans, Frans Timmermans, Rachel Ward, Yong-Joo Chung

Department of Food Science and Technology: Faculty Publications

Risk assessment describes the impact of a particular hazard as a function of dose and exposure. It forms the foundation of risk management and contributes to the overall decision-making process, but is not its endpoint. This paper outlines a risk analysis framework to underpin decision-making in the area of allergen cross-contact. Specifically, it identifies challenges relevant to each component of the risk analysis: risk assessment (data gaps and output interpretation); risk management (clear and realistic objectives); and risk communication (clear articulation of risk and benefit). Translation of the outputs from risk assessment models into risk management measures must be informed …


Repeated Cooking And Freezing Of Whole Wheat Flour Increases Resistant Starch With Beneficial Impacts On In Vitro Fecal Fermentation Properties, Jennifer A. Arcila, Devin J. Rose Jan 2014

Repeated Cooking And Freezing Of Whole Wheat Flour Increases Resistant Starch With Beneficial Impacts On In Vitro Fecal Fermentation Properties, Jennifer A. Arcila, Devin J. Rose

Department of Food Science and Technology: Faculty Publications

Resistant starch (RS) has shown benefits to gastrointestinal health, but it is present in only small amounts in most grain-based foods. The purpose of this study was to increase RS in whole wheat flour to improve its potential health benefits. Zero to 7 cycles of cooking (20 min, boiling water) and freezing (−18 °C, 23 h) of whole wheat flour in water (1:15 %w/v) were performed. Increasing cooking–freezing cycles increased RS from 1.03 to 8.07% during in vitro starch digestion. During in vitro fecal fermentation, increasing cooking–freezing cycles increased short chain fatty acids, mainly propionate. Increases in butyrate were also …


Efficacy Of The Getting Ready Intervention And The Role Of Parental Depression, Susan M. Sheridan, Lisa Knoche, Carolyn P. Edwards, Kevin A. Kupzyk, Brandy L. Clark, Elizabeth M. Kim Jan 2014

Efficacy Of The Getting Ready Intervention And The Role Of Parental Depression, Susan M. Sheridan, Lisa Knoche, Carolyn P. Edwards, Kevin A. Kupzyk, Brandy L. Clark, Elizabeth M. Kim

Department of Educational Psychology: Faculty Publications

This study reports the results of a randomized trial of a parent engagement intervention (the Getting Ready Project) on directly observed learning-related social behaviors of children from families of low-income in the context of parent-child interactions. The study explored the moderating effect of parental depression on intervention outcomes. Participants were 204 children and their parents, and 29 Head Start teachers. Semi-structured parent-child interaction tasks were videotaped two times annually over the course of two academic years. Observational codes of child behaviors included agency, persistence, activity level, positive affect, distractibility, and verbalizations. Controlling for gender and disability concerns, relative to children …


Availability And Use Of Indigenous Knowledge Amongst Rural Women In Nigeria, Margaret Uyouyou Ugboma Dr. Jan 2014

Availability And Use Of Indigenous Knowledge Amongst Rural Women In Nigeria, Margaret Uyouyou Ugboma Dr.

Library Philosophy and Practice (e-journal)

Abstract

This study investigates rural women’s use of indigenous knowledge in Nigeria, with particular reference to the Isoko ethnic nationality of Delta State. The survey research design was adopted for the study. A questionnaire was designed to collect data from women located in ten rural communities of Isoko South Local Government Area of Delta State that constitute the sample size for this study. Analyses were carried out using frequencies and percentage distributions. Findings reveal an extensive wealth and use of indigenous knowledge in agriculture, health care, child delivery, economic and child care. The study also reveals that majority of rural …


Wolf Population Regulation Revisited—Again, Ronald E. Mcroberts, L. David Mech Jan 2014

Wolf Population Regulation Revisited—Again, Ronald E. Mcroberts, L. David Mech

United States Geological Survey, Northern Prairie Wildlife Research Center: Publications

The long-accepted conclusion that wolf density is regulated by nutrition was recently challenged, and the conclusion was reached that, at greater levels of prey biomass, social factors such as intraspecific strife and territoriality tend to regulate wolf density. We reanalyzed the data used in that study for 2 reasons: 1) we disputed the use of 2 data points, and 2) because of recognized heteroscedasticity, we used weighted-regression analysis instead of the unweighted regressions used in the original study. We concluded that the data do not support the hypothesis that wolf densities are regulated by social factors.


Re-Evaluating The Northeastern Minnesota Moose Decline And The Role Of Wolves, L. David Mech, John Fieberg Jan 2014

Re-Evaluating The Northeastern Minnesota Moose Decline And The Role Of Wolves, L. David Mech, John Fieberg

United States Geological Survey, Northern Prairie Wildlife Research Center: Publications

We re-evaluated findings from Lenarz et al. (2009) that adult moose (Alces alces) survival in northeastern Minnesota was related to high January temperatures and that predation by wolves (Canis lupus) played a minor role. We found significant inverse relationships between annual wolf numbers in part of the moose range and various moose demographics from 2003 to 2013 that suggested a stronger role of wolves than heretofore believed. To re-evaluate the temperature findings, we conducted a simulation study, mimicking the approach taken by Lenarz et al. (2009), to explore the potential for concluding a significant relationship exists …


The Catabolite Control Protein E (Ccpe) Affects Virulence Determinant Production And Pathogenesis Of Staphylococcus Aureus, Torsten Hartmann, Grégory Baronian, Nadine Nippe, Meike Voss, Bettina Schulthess, Christiane Wolz, Janina Eisenbeis, Kerstin Schmidt-Hohagen, Rosmarie Gaupp, Cord Sunderkötter, Christoph Beisswenger, Robert Bals, Greg A. Somerville, Mathias Herrmann, Virginie Molle, Markus Bischoff Jan 2014

The Catabolite Control Protein E (Ccpe) Affects Virulence Determinant Production And Pathogenesis Of Staphylococcus Aureus, Torsten Hartmann, Grégory Baronian, Nadine Nippe, Meike Voss, Bettina Schulthess, Christiane Wolz, Janina Eisenbeis, Kerstin Schmidt-Hohagen, Rosmarie Gaupp, Cord Sunderkötter, Christoph Beisswenger, Robert Bals, Greg A. Somerville, Mathias Herrmann, Virginie Molle, Markus Bischoff

School of Veterinary and Biomedical Sciences: Faculty Publications

Carbon metabolism and virulence determinant production are often linked in pathogenic bacteria, and several regulatory elements have been reported to mediate this linkage in Staphylococcus aureus. Previously, we described a novel protein, catabolite control protein E (CcpE) that functions as a regulator of the tricarboxylic acid cycle. Here we demonstrate that CcpE also regulates virulence determinant biosynthesis and pathogenesis. Specifically, deletion of ccpE in S. aureus strain Newman revealed that CcpE affects transcription of virulence factors such as capA, the first gene in the capsule biosynthetic operon; hla, encoding α-toxin; and psmα, encoding the phenol-soluble modulin cluster α. Electrophoretic mobility …


Influence Of Iron And Aeration On Staphylococcus Aureus Growth, Metabolism, And Transcription, Nagender Ledala, Bo Zhang, Javier Seravalli, Robert Powers, Greg Somerville Jan 2014

Influence Of Iron And Aeration On Staphylococcus Aureus Growth, Metabolism, And Transcription, Nagender Ledala, Bo Zhang, Javier Seravalli, Robert Powers, Greg Somerville

School of Veterinary and Biomedical Sciences: Faculty Publications

Staphylococcus aureus is a prominent nosocomial pathogen and a major cause of biomaterial-associated infections. The success of S. aureus as a pathogen is due in part to its ability to adapt to stressful environments. As an example, the transition from residing in the nares to residing in the blood or deeper tissues is accompanied by changes in the availability of nutrients and elements such as oxygen and iron. As such, nutrients, oxygen, and iron are important determinants of virulence factor synthesis in S. aureus. In addition to influencing virulence factor synthesis, oxygen and iron are critical cofactors in enzymatic and …


Senescence, Dormancy And Tillering In Perennial C4 Grasses, Gautam Sarath, Lisa Baird, Robert Mitchell Jan 2014

Senescence, Dormancy And Tillering In Perennial C4 Grasses, Gautam Sarath, Lisa Baird, Robert Mitchell

Department of Agronomy and Horticulture: Faculty Publications

Perennial, temperate, C4 grasses, such as switchgrass and miscanthus have been tabbed as sources of herbaceous biomass for the production of green fuels and chemicals based on a number of positive agronomic traits. Although there is important literature on the management of these species for biomass production on marginal lands, numerous aspects of their biology are as yet unexplored at the molecular level. Perenniality, a key agronomic trait, is a function of plant dormancy and winter survival of the belowground parts of the plants. These include the crowns, rhizomes and meristems that will produce tillers. Maintaining meristem viability is critical …


Global Changes In Mineral Transporters In Tetraploid Switchgrasses (Panicum Virgatum L.), Nathan A. Palmer, Aaron J. Saathoff, Brian M. Waters, Teresa Donze, Tiffany M. Heng-Moss, Paul Twigg, Christian M. Tobias, Gautam Sarath Jan 2014

Global Changes In Mineral Transporters In Tetraploid Switchgrasses (Panicum Virgatum L.), Nathan A. Palmer, Aaron J. Saathoff, Brian M. Waters, Teresa Donze, Tiffany M. Heng-Moss, Paul Twigg, Christian M. Tobias, Gautam Sarath

Department of Agronomy and Horticulture: Faculty Publications

Switchgrass (Panicum virgatum L) is a perennial, C4 grass with great potential as a biofuel crop. An in-depth understanding of the mechanisms that control mineral uptake, distribution, and remobilization will benefit sustainable production. Nutrients are mobilized from aerial portions to below-ground crowns and rhizomes as a natural accompaniment to above-ground senescence post seed-set. Mineral uptake and remobilization is dependent on transporters, however, little if any information is available about the specific transporters that are needed and how their relative expression changes over a growing season.Using well-defined classes of mineral transporters, we identified 520 genes belonging to 40 different transporter …


Identification Of New Qtls For Seed Mineral, Cysteine, And Methionine Concentrations In Soybean [Glycine Max (L.) Merr.], Raghuprakash Kastoori Ramamurthy, Joseph Jedlicka, George L. Graef, Brian M. Waters Jan 2014

Identification Of New Qtls For Seed Mineral, Cysteine, And Methionine Concentrations In Soybean [Glycine Max (L.) Merr.], Raghuprakash Kastoori Ramamurthy, Joseph Jedlicka, George L. Graef, Brian M. Waters

Department of Agronomy and Horticulture: Faculty Publications

Increased concentrations of important nutrients in edible parts of plants could result in biofortified foods. Soybean [Glycine max (L.) Merr.] is a major legume crop and an important source of certain nutrients, including protein and minerals, in human and animal diets. Understanding the underlying genetic basis of seed composition is crucial to improving seed nutrient composition. In this study we used three soybean recombinant inbred line mapping populations derived from the crosses Williams 82 × DSR-173, Williams 82 × NKS19-90 and Williams 82 × Vinton 81, and constructed a joint linkage map from these populations. Forty quantitative trait loci (QTLs) …


Nonsyntenic Genes Drive Highly Dynamic Complementation Of Gene Expression In Maize Hybrids, Anja Paschold, Nick B. Larson, Caroline Marcon, James C. Schnable, Cheng-Ting Yeh, Christa Lanz, Dan Nettleton, Hans-Peter Piepho, Patrick S. Schnable, Frank Hochholdinger Jan 2014

Nonsyntenic Genes Drive Highly Dynamic Complementation Of Gene Expression In Maize Hybrids, Anja Paschold, Nick B. Larson, Caroline Marcon, James C. Schnable, Cheng-Ting Yeh, Christa Lanz, Dan Nettleton, Hans-Peter Piepho, Patrick S. Schnable, Frank Hochholdinger

Department of Agronomy and Horticulture: Faculty Publications

Maize (Zea mays) displays an exceptional level of structural genomic diversity, which is likely unique among higher eukaryotes. In this study, we surveyed how the genetic divergence of two maize inbred lines affects the transcriptomic landscape in four different primary root tissues of their F1-hybrid progeny. An extreme instance of complementation was frequently observed: genes that were expressed in only one parent but in both reciprocal hybrids. This single-parent expression (SPE) pattern was detected for 2341 genes with up to 1287 SPE patterns per tissue. As a consequence, the number of active genes in hybrids exceeded that of …