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Temperature Regulation Of Pipecolic Acid-Mediated Plant Systemic Immunity In Arabidopsis Thaliana, Alyssa Shields 2023 Wilfrid Laurier University

Temperature Regulation Of Pipecolic Acid-Mediated Plant Systemic Immunity In Arabidopsis Thaliana, Alyssa Shields

Theses and Dissertations (Comprehensive)

Significant crop losses are caused by pathogenic infections annually, which are exacerbated by increasing global temperatures due to climate change. One way by which plants respond to pathogenic attacks is through the activation of pattern-triggered immunity (PTI), effector-triggered immunity (ETI), and systemic acquired resistance (SAR), which lead to production of the central defence phytohormone salicylic acid (SA). Accompanying SA release is the putative mobilization of pipecolic acid (Pip), which acts as an immune regulatory plant metabolite that works with and independently from SA. As demonstrated in the model plant Arabidopsis thaliana following infection with the model bacterial pathogen Pseudomonas syringae ...


Potential Effects Of Road Proximity On Zooplankton Communities And Water Quality In Lakes In The Northwest Territories, Marie N. Hannan 2023 Wilfrid Laurier University

Potential Effects Of Road Proximity On Zooplankton Communities And Water Quality In Lakes In The Northwest Territories, Marie N. Hannan

Theses and Dissertations (Comprehensive)

Studies conducted along Canada’s Dempster Highway in the Northwest Territories have shown that road dust can affect water quality in roadside lakes, leading to higher calcium, conductivity, and pH levels. These water quality changes have the potential to affect important members of the lower aquatic food web, such as zooplankton.

For my thesis research, I had two main objectives: 1) To determine if changes in water chemistry caused by deposition of road dust affects zooplankton communities; and 2) To examine if the type of roadside vegetation influences the effects of road dust on aquatic habitats. To achieve these objectives ...


The Effect Of Alkalinity On Lampricide Effectiveness And Gill Physiology In Invasive Sea Lamprey (Petromyzon Marinus), Alexandre J. Walsh 2023 Wilfrid Laurier University

The Effect Of Alkalinity On Lampricide Effectiveness And Gill Physiology In Invasive Sea Lamprey (Petromyzon Marinus), Alexandre J. Walsh

Theses and Dissertations (Comprehensive)

The pesticides, 3-trifluoromethyl-4-nitrophenol (TFM) and niclosamide are used to control populations of invasive sea lamprey (Petromyzon marinus) in the Laurentian Great Lakes of North America. Added to streams infested with larval sea lamprey, the effectiveness of these pesticides, commonly called lampricides, are strongly influenced by water pH, with greater toxicity for both TFM and niclosamide in lower pH than higher pH water. However, the TFM and niclosamide sensitivity of sea lamprey are also greater in poorly buffered, low alkalinity water than in high alkalinity water but it is unclear why. One goal of my thesis was to propose a model ...


Context And Content Of Teaching Conversations: Exploring How To Promote Sharing Of Innovative Teaching Knowledge Between Science Faculty, A. Kelly Lane, Brittnee Earl, Stephanie Feola, Jennifer E. Lewis, Jacob D. McAlpin, Karl Mertens, Susan E. Shadle, John Skvoretz, John P. Ziker, Marilyne Stains, Brian A. Couch, Luanna B Prevost 2022 University of Minnesota Twin Cities

Context And Content Of Teaching Conversations: Exploring How To Promote Sharing Of Innovative Teaching Knowledge Between Science Faculty, A. Kelly Lane, Brittnee Earl, Stephanie Feola, Jennifer E. Lewis, Jacob D. Mcalpin, Karl Mertens, Susan E. Shadle, John Skvoretz, John P. Ziker, Marilyne Stains, Brian A. Couch, Luanna B Prevost

Faculty Publications in the Biological Sciences

Background: Change strategies may leverage interpersonal relationships and conversations to spread teaching innovations among science faculty. Knowledge sharing refers to the process by which individuals transfer information and thereby spread innovative ideas within an organization. We use knowledge sharing as a lens for identifying factors that encourage productive teaching-related conversations between individuals, characterizing the context and content of these discussions, and understanding how peer interactions may shape instructional practices. In this study, we interview 19 science faculty using innovative teaching practices about the teaching-focused conversations they have with different discussion partners. Results: This qualitative study describes characteristics of the relationship ...


Late Quaternary Biotic Homogenization Of North American Mammalian Faunas, Danielle Fraser, Amelia Villaseñor, Anikó B. Tóth, Meghan A. Balk, Jussi T. Eronen, W. Andrew Barr, A. K. Behrensmeyer, Matt Davis, Andrew Du, J. Tyler Faith, Gary R. Graves, Nicholas J. Gotelli, Advait M. Jukar, Cindy V. Looy, Brian J. McGill, Joshua H. Miller, Silvia Pineda-Munoz, Richard Potts, Alex B. Shupinski, Laura C. Soul, S. Kathleen Lyons 2022 Museé canadien de la nature

Late Quaternary Biotic Homogenization Of North American Mammalian Faunas, Danielle Fraser, Amelia Villaseñor, Anikó B. Tóth, Meghan A. Balk, Jussi T. Eronen, W. Andrew Barr, A. K. Behrensmeyer, Matt Davis, Andrew Du, J. Tyler Faith, Gary R. Graves, Nicholas J. Gotelli, Advait M. Jukar, Cindy V. Looy, Brian J. Mcgill, Joshua H. Miller, Silvia Pineda-Munoz, Richard Potts, Alex B. Shupinski, Laura C. Soul, S. Kathleen Lyons

Faculty Publications in the Biological Sciences

Biotic homogenization—increasing similarity of species composition among ecological communities—has been linked to anthropogenic processes operating over the last century. Fossil evidence, however, suggests that humans have had impacts on ecosystems for millennia. We quantify biotic homogenization of North American mammalian assemblages during the late Pleistocene through Holocene (~30,000 ybp to recent), a timespan encompassing increased evidence of humans on the landscape (~20,000–14,000 ybp). From ~10,000 ybp to recent, assemblages became significantly more homogenous (>100% increase in Jaccard similarity), a pattern that cannot be explained by changes in fossil record sampling. Homogenization was most ...


Avian Species Distribution Models: Using Location Data To Inform Management Decisions, Marilyn E. Wright 2022 Utah State University

Avian Species Distribution Models: Using Location Data To Inform Management Decisions, Marilyn E. Wright

All Graduate Theses and Dissertations

Both state and federal wildlife agencies strive to conserve and protect wildlife and their habitats as an important public resource. Applied management decisions often rely on being able to obtain data that can efficiently and effectively enhance the understanding of these systems for informing management actions. Wildlife managers often focus efforts on a small subset of species from an ecosystem, typically called focal species, who can serve as surrogates for understanding the health and function of the system. Models that consider how these focal species interact with the ecosystem are often used to better understand important aspects of their life ...


Bugs, Bullets And Birds: Factors Affecting The Health And Survival Of Ferruginous Hawk Nestlings In The Intermountain West, Ellis A. Juhlin 2022 Utah State University

Bugs, Bullets And Birds: Factors Affecting The Health And Survival Of Ferruginous Hawk Nestlings In The Intermountain West, Ellis A. Juhlin

All Graduate Theses and Dissertations

Ferruginous Hawks are a bird of prey species that nest in sagebrush steppe and grassland habitat. These birds are threatened by habitat loss and fragmentation from urbanization, rural development, oil and natural gas extraction, habitat treatment projects, and wildfires, and experiencing widespread population declines across their breeding range. Because of this, Ferruginous Hawks (FEHAs) have been deemed a Species of Greatest Conservation Need by state management agencies in Utah, Idaho, Wyoming and Nevada. The health and survival of Ferruginous Hawk (FEHA) nestlings is crucial to long-term population viability. Understanding the threats these birds are facing as nestlings can provide valuable ...


Removal Of Heavy Metals From Stormwater Runoff Using Granulated Drinking Water Treatment Residuals, Viravid Na Nagara, Dibyendu Sarkar, Evert J. Elzinga, Rupali Datta 2022 Stevens Institute of Technology

Removal Of Heavy Metals From Stormwater Runoff Using Granulated Drinking Water Treatment Residuals, Viravid Na Nagara, Dibyendu Sarkar, Evert J. Elzinga, Rupali Datta

Michigan Tech Publications

Stormwater runoff is a significant source of heavy metals, including cadmium (Cd), chromium (Cr), and nickel (Ni), which pose ecological and human health problems. Various filter media have been evaluated for heavy metal removal from stormwater via adsorption, most involving chemical- or energy-intensive processes. Aluminum-based drinking water treatment residuals (WTR), a non-hazardous byproduct of drinking water treatment, are an inexpensive sorbent for heavy metals. However, the low permeability of WTR is a problem and requires mixing with sand and carbon materials to improve flow; but such amendments also reduce its sorption capacity. To overcome this problem, a granulated WTR sorbent ...


Inhibiting S100Β And Troubleshooting Cell Growth, Animesh Dali, Suhana Basnyat, Robert Passarelli, Nipun Chopra 2022 DePauw University

Inhibiting S100Β And Troubleshooting Cell Growth, Animesh Dali, Suhana Basnyat, Robert Passarelli, Nipun Chopra

Annual Student Research Poster Session

S100B is a protein that is upregulated in neuronal injury. The upregulation of S100B has been observed to start multiple cascades that result in neuronal death. The inhibition of S100B would be a promising treatment for neuronal injury. In our research, we attempt to do exactly so.


Latex Induction And Effects Of Herbivory On Apocynum Cannabinum, Shiley Claypool, Tim Douglas, Rose Keith 2022 DePauw University

Latex Induction And Effects Of Herbivory On Apocynum Cannabinum, Shiley Claypool, Tim Douglas, Rose Keith

Annual Student Research Poster Session

Apocynum cannabinum, also known as hemp dogbane, is a species of perennial native to the U.S. This species has been found to be extremely plastic, meaning that its environment has significant effects on its phenotypic traits (Ransom et al. 1998). Plant-herbivore interactions, such as herbivory, can drive this plasticity. One of these responses includes the induction of Latex, a white sappy fluid that exits leaves and stems induced by damage (Agrawal and Konno 2009). This project investigates the effects of early-season vs. late-season herbivory on hemp dogbane, as well as how latex induction is influenced by these plant-herbivore interactions.


Effects Of Nitrogen Fertilizer On The Sugar And Ethanol Production Of C. Sativa, Aidan Power, Christian Mugisha, Boanerges Bamaca, Asmita Mahara, Mark Wilkins Ph.D 2022 DePauw University

Effects Of Nitrogen Fertilizer On The Sugar And Ethanol Production Of C. Sativa, Aidan Power, Christian Mugisha, Boanerges Bamaca, Asmita Mahara, Mark Wilkins Ph.D

Annual Student Research Poster Session

With the decrease of fossil fuel-supply and increase of greenhouse gasses, biofuels are needed now more than ever. This includes bioethanol, an alternative fuel that can be made from waste materials, including C. Sativa (commonly known as hemp). The common belief in biological engineering is that the sugars from hemp can attract fermenting organisms to produce the needed ethanol. The question remains, however, of how external factors play into the ethanol production from hemp, such as fertilizer. I tested samples from three plots with different amounts of nitrogen fertilizer to see if the amount of sugar and ethanol varies or ...


Speciation Jigsaw Activity, Erika Crispo 2022 Pace University

Speciation Jigsaw Activity, Erika Crispo

Open Educational Resources

What is a species? Why are there so many species on the planet? The question of why we have different species of organisms was the key thesis of Charles Darwin’s most famous book, On the Origin of Species.While several definitions of what constitutes a species exists, the most common definition lies within thebiological species concept. This concept states that different species exist when two individuals of different sexes are unable to reproduce with one another to yield viable offspring in the wild. A major limitation of this definition is that it can only be applied to sexually reproducing ...


The Coastal Monitor: Vol. 9 No. 5, John Tanacredi Ph.D. 2022 Molloy University

The Coastal Monitor: Vol. 9 No. 5, John Tanacredi Ph.D.

The Coastal Monitor

There are a multitude of lessons learned from the last 3 years of the Covid-19 pandemic. But one truly stands out ...the total lack of understanding of the basic chemistry associated with the nitrogen cycle, which in Suffolk County, NY, continues to be declared as the “evil-nitrogen”. The major source of nitrogen into the water body comes from the atmosphere which is the predominate constituent of the air we breathe79% nitrogen. Nitrogen compounds contribution to eutrophication in freshwater (ponds & lakes) systems is legendary and, the concentration of nitrogen in marine waters has always been known as a limiting agent which are absolutely required elements in small amounts. No nitrogen, no primary productivity. So, historically, at least up to the 1970’s and the Clean Water Act, nitrogen contributions to any water system has been attributable to human “sanitary” waste. Large populations require for adequate treatment, sewage systems that involve primary, secondary, and sometimes tertiary treatment along with the use of chlorine to make sure, as best as is chemically possible, the elimination of pathogenic organisms that cause disease. Thus, in the US, there is no concern with cholera, typhoid, and typhus; all significant bacterial diseases that converge in wastewater treatment systems and arise primarily where wastewaters are left untreated!


A Review On Serum, Genetic And Mirna Associated Biomarkers For The Early Diagnosis Of Hepatocellular Carcinoma (Hcc)), Ambreen Kanwal, Asima Tayyeb 2022 School of Biological Sciences, University of the Punjab, Lahore, Pakistan

A Review On Serum, Genetic And Mirna Associated Biomarkers For The Early Diagnosis Of Hepatocellular Carcinoma (Hcc)), Ambreen Kanwal, Asima Tayyeb

Journal of Bioresource Management

Hepatocellular carcinoma is the most devastating complication of liver cirrhosis and diagnosis in earlier stages could be useful in curative interventions. The main aim of this review was to analyze current diagnostic biomarkers which are available for the early diagnosis of hepatocellular carcinoma (HCC). For this purpose, we searched different web databases including Medline/Pubmed. We found multiple significant serum biomarkers for imperative diagnosis including α- Fetoprotein, Des- γ -carboxyprothrombin (DCP), Osteopontin (OPN), Glypican-3 (GPC3), Golgi protein-73 (GP73), Squamous cell carcinoma antigen (SCCA), Annexin A2 (ANXA2) and Heat shock protein 70 (HSP70) but all of these represent low sensitivity and ...


Not The Same Cure: Student Experiences In Course-Based Undergraduate Research Experiences Vary By Graduate Teaching Assistant, Emma C. Goodwin, Jessica R. Cary, Erin E. Shortlidge 2022 Portland State University

Not The Same Cure: Student Experiences In Course-Based Undergraduate Research Experiences Vary By Graduate Teaching Assistant, Emma C. Goodwin, Jessica R. Cary, Erin E. Shortlidge

Biology Faculty Publications and Presentations

To expose all undergraduate science students to the benefits of participating in research, many universities are integrating course-based undergraduate research experiences (CUREs) into their introductory biology laboratory curriculum. At large institutions, the bulk of introductory labs are instructed by graduate teaching assistants (GTAs). Graduate students, who are often teachers and researchers in training, may vary in their capacity to effectively teach undergraduates via the CURE model. To explore variation in GTA teaching and the subsequent outcomes for students, we used a case study research design at one institution where introductory biology students participate in GTA-taught CURE lab sections. We used ...


Targeting Of The Hedgehog Signaling Pathway In Cancer Treatment, Andrew J. Hawes 2022 University of Louisville

Targeting Of The Hedgehog Signaling Pathway In Cancer Treatment, Andrew J. Hawes

The Cardinal Edge

The Hedgehog (Hh) signaling pathway is a developmental pathway that is highly conserved evolutionarily. While typically only displaying high activity during embryogenesis, overactivation of the Hh pathway in adults has been linked to multiple forms of cancer including acute myeloid leukemia, myelofibrosis, basal-cell carcinoma, pancreatic ductal adrenal carcinoma, and triple negative breast cancer. The prevalence of Hh activation in many different cancers has made it a prime target for inhibition of these cancers through novel therapies. This literature review sought to assess the current state of cancer treatment through inhibition of Hh signaling. Most current clinical trials involving the pathway ...


Visualizing Hormonal Effects On Cardiomyocyte Hypertrophic Growth Dynamics Using Digital Holographic Microscopy: Does Size Matter?, Jacquelyn Simmons 2022 San Jose State University

Visualizing Hormonal Effects On Cardiomyocyte Hypertrophic Growth Dynamics Using Digital Holographic Microscopy: Does Size Matter?, Jacquelyn Simmons

McNair Research Journal SJSU

Heart disease continues to be the leading cause of death in the United States. Humans are unable to regenerate their heart tissue following an injury. However, neonatal mice are able to regenerate their heart tissue when cardiomyocytes (CMs) proliferate. This regenerative ability is lost approximately one week after birth when proliferating mononucleated CMs become binucleated and can no longer complete the cell-cycle. Recent studies have shown the combined inhibition of thyroid hormone (T3) and norepinephrine (NE) increases CM proliferation, promotes heart regeneration, and reduces cell size in vivo. Using digital holographic microscopy, the aim of this study was to (1 ...


Characterizing First-Year Biology Majors’ Motivations And Perceptions Of The Discipline, Jeremy L. Hsu, Lauren Dudley 2022 Chapman University

Characterizing First-Year Biology Majors’ Motivations And Perceptions Of The Discipline, Jeremy L. Hsu, Lauren Dudley

Biology, Chemistry, and Environmental Sciences Faculty Articles and Research

Understanding why students choose to major in biology provides important insight into the motivations of biology majors. It is similarly important to investigate how biology majors perceive the discipline, including associated activities, such as independent research, which can influence students’ interests in the field and likelihood to persist in science, engineering, technology, and math. However, there has been little work done examining biology student motivations and perceptions, particularly at non-research-intensive universities or after the COVID-19 pandemic started. To address this gap, we surveyed the first-year cohort of biology majors at a private, comprehensive university. We found that students largely reported ...


Clustered Protocadherins Ubiquitination And Phosphorylation Regulates Surface Expression, Albert Ptashnik 2022 The Graduate Center, City University of New York

Clustered Protocadherins Ubiquitination And Phosphorylation Regulates Surface Expression, Albert Ptashnik

Dissertations, Theses, and Capstone Projects

Clustered protocadherins (Pcdhs) are a family of 60 adhesion-like molecules forming a neural barcode. In vertebrate neurons, 60 Pcdhs are coded by a large gene cluster. Numerous axons in the cluster are coding for the different extracellular, transmembrane, variable portion of the cytoplasmic and constant cytoplasmic domains where their expression is controlled epigenetically. These proteins mediate interactions between axons, dendrites, and glial cells during neural development. Yet, Pcdhs are not strictly adhesion molecules. In the amacrine cells of the retina, Pcdhs promote avoidance of the same cell dendrites, where in the cortex Pcdhs promote interactions between dendrites and astrocytes. In ...


Development Of The Seqcode: A Proposed Nomenclatural Code For Uncultivated Prokaryotes With Dna Sequences As Type, William Whitman, Maria Chuvochina, Brian P. Hedlund, Philip Hugenholtz, Konstantinos T. Konstantinidis, Alison E. Murray, Marike Palmer, Donovan H. Parks, Anna-Louise Reysenbach, multiple additional authors 2022 University of Georgia

Development Of The Seqcode: A Proposed Nomenclatural Code For Uncultivated Prokaryotes With Dna Sequences As Type, William Whitman, Maria Chuvochina, Brian P. Hedlund, Philip Hugenholtz, Konstantinos T. Konstantinidis, Alison E. Murray, Marike Palmer, Donovan H. Parks, Anna-Louise Reysenbach, Multiple Additional Authors

Biology Faculty Publications and Presentations

Over the last fifteen years, genomics has become fully integrated into prokaryotic systematics. The genomes of most type strains have been sequenced, genome sequence similarity is widely used for delineation of species, and phylogenomic methods are commonly used for classification of higher taxonomic ranks. Additionally, environmental genomics has revealed a vast diversity of as-yet-uncultivated taxa. In response to these developments, a new code of nomenclature, the Code of Nomenclature of Prokaryotes Described from Sequence Data (SeqCode), has been developed over the last two years to allow naming of Archaea and Bacteria using DNA sequences as the nomenclatural types. The SeqCode ...


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