Open Access. Powered by Scholars. Published by Universities.®
- Discipline
-
- Biology (5)
- Genetics and Genomics (4)
- Microbial Physiology (4)
- Biochemistry, Biophysics, and Structural Biology (3)
- Medicine and Health Sciences (3)
-
- Molecular Biology (3)
- Molecular Genetics (3)
- Pharmacology, Toxicology and Environmental Health (3)
- Social and Behavioral Sciences (3)
- Agricultural Science (2)
- Agriculture (2)
- Bacteria (2)
- Bacteriology (2)
- Biochemistry (2)
- Cell Biology (2)
- Cell and Developmental Biology (2)
- Environmental Microbiology and Microbial Ecology (2)
- Food Microbiology (2)
- Food Science (2)
- Genetics (2)
- Genomics (2)
- Organisms (2)
- Pathogenic Microbiology (2)
- Physical Sciences and Mathematics (2)
- Plant Sciences (2)
- Toxicology (2)
- Agribusiness (1)
- Institution
- Keyword
-
- Fungi (2)
- Nanotechnology (2)
- Yeast (2)
- AVP1 (1)
- Acinetobacter baumannii (1)
-
- Alcaligenes faecalis (1)
- Antibiotic resistance (1)
- Ants (1)
- Barite (1)
- Biofuels (1)
- Bone (1)
- Candida albicans (1)
- Candida species (1)
- Carbon storage (1)
- Carrion Decomposition (1)
- Cellulose (1)
- Copper (1)
- Corn (1)
- Cyanobacteria (1)
- Cyanotoxins (1)
- Cyclic-di-GMP (1)
- Detection (1)
- Double-strand breaks (1)
- E. coli (1)
- Economic analysis (1)
- Evolution (1)
- Farnesol (1)
- Fermentation (1)
- Forensic Science (1)
- Fungus (1)
- Publication
-
- Undergraduate Honors Theses (2)
- Biology ETDs (1)
- Biology Theses (1)
- Celebration of Undergraduate & Graduate Research, Scholarship, and Creative Activities Materials (1)
- Department of Biology Faculty Scholarship and Creative Works (1)
-
- Department of Food Science and Technology: Dissertations, Theses, and Student Research (1)
- Graduate Theses, Dissertations, and Problem Reports (ETD) (1)
- Honors Projects (1)
- International Journal of Speleology (1)
- Karbala International Journal of Modern Science (1)
- LSU Master's Theses (1)
- Master's Theses (1)
- Seton Hall University Dissertations and Theses (ETDs) (1)
- Theses and Dissertations (1)
- Publication Type
Articles 1 - 15 of 15
Full-Text Articles in Other Microbiology
A Cophylogenetic Analysis Of Fungus Gardening Ants And Their Symbiotic Fungi, Katherine Beigel
A Cophylogenetic Analysis Of Fungus Gardening Ants And Their Symbiotic Fungi, Katherine Beigel
Biology Theses
Fungus-growing ants (Tribe Attini) and their fungal cultivars share a 50-million-year coevolutionary history. Large scale phylogenetic analyses depict a strong co-phyletic signal among ants and their farmed fungi yet fungus sharing among unrelated ant lineages is somewhat widespread. An overview of sharing has been hampered by a lack of genetic markers that exhibit intraspecific variation and surveys across geographic regions. For example, previous studies have shown similar sequences of the internal transcribed spacer (ITS) region of fungus in different species of Trachymyrmex, suggesting that these ant species are farming the same fungal clone. To examine whether this was a …
Inaction On Lead Despite The Relevant Knowledge: Predictors, Covariates, And Outreach Implications, Alessandra Rossi, Bernabas Wolde, Pankaj Lal, Melissa Harclerode
Inaction On Lead Despite The Relevant Knowledge: Predictors, Covariates, And Outreach Implications, Alessandra Rossi, Bernabas Wolde, Pankaj Lal, Melissa Harclerode
Department of Biology Faculty Scholarship and Creative Works
Testing residential soil and paint for lead provides actionable information. By showing where and how much lead exists on the residence, it allows one to quantify risk and determine the best ways to reduce exposure along with the corresponding health and financial costs. For these reasons, several federal and state programs offer outreach to audiences on the benefits of testing residential soil and paint for lead. Not all individuals who know about lead’s adverse health effects, however, test their residence for lead, potentially limiting the actionable information that could have helped to reduce their exposure. Such individuals represent a challenge …
Innate Pathogenic Traits In Oral Yeasts, Ayat Ibrahiem Esmaeel Al-Laaeiby, Adnan A. Al-Mousawi, Inaam M.N. Alrubayae, Abdullah Al-Saadoon, Maysoon Almayahi
Innate Pathogenic Traits In Oral Yeasts, Ayat Ibrahiem Esmaeel Al-Laaeiby, Adnan A. Al-Mousawi, Inaam M.N. Alrubayae, Abdullah Al-Saadoon, Maysoon Almayahi
Karbala International Journal of Modern Science
The normal flora community plays a significant role in both healthy and patient individual’s bodies. It has improved its ability to change from beneficial to opportunistic organisms causing crucial infections in immunocompromised patients. This study was conducted to identify the community of yeast species, and to investigate potential virulence factors. Saliva samples were collected from healthy individuals, yeast species were isolated and identified using both traditional and advance molecular genetics technique. The results revealed that Candida albicans was the dominant isolate, while Meyerozyma caribbica was the least. The phylogenetic tree was constructed for 13 species using the Neighbour-Joining method, which …
Assessment Of Grain Safety In Developing Nations, Jose R. Mendoza
Assessment Of Grain Safety In Developing Nations, Jose R. Mendoza
Department of Food Science and Technology: Dissertations, Theses, and Student Research
Grains are the most widely consumed foods worldwide, with maize (Zea mays) being frequently consumed in developing countries where it feeds approximately 900 million people under the poverty line of 2 USD per day. While grain handling practices are acceptable in most developed nations, many developing nations still face challenges such as inadequate field management, drying, and storage. Faulty grain handling along with unavoidably humid climates result in recurrent fungal growth and spoilage, which compromises both the end-quality and safety of the harvest. This becomes particularly problematic where there is little awareness about health risks associated with poor …
Characterization Of The Overexpression Of The Native H+-Pumping Pyrophosphatase In The Microalga Picochlorum Soloecismus, Kimberly T. Wright
Characterization Of The Overexpression Of The Native H+-Pumping Pyrophosphatase In The Microalga Picochlorum Soloecismus, Kimberly T. Wright
Biology ETDs
Microalgae are of interest for the creation of sustainable and cost competitive alternatives to petroleum-based fuels and chemicals. However, cultivation, extraction and processing of algal biomass requires improved yields to achieve economic feasibility. The advancement of microalgal biotechnology and various genetic engineering techniques allow the improvement of microalgae biomass for this purpose. Here, the characterization of the overexpression of the native vacuolar H+ pumping pyrophosphate (AVP1) in Picochlorum soloecismus was examined. AVP1 overexpression causes biomass increase in relevant plant crops. When overexpressed in this microalga it increases carbon storage in the form of starch in a closed laboratory photobioreactor. However, …
Analysis And Optimization Of Colorimetric Nanosensors For Rapid Detection Of Microbes In Water, Ruby A. Lang
Analysis And Optimization Of Colorimetric Nanosensors For Rapid Detection Of Microbes In Water, Ruby A. Lang
Master's Theses
Access to safe water is a basic human right recognized by the United Nations General Assembly in 2010 (WHO, 2020). However, a least 2.2 billion people globally still are without safely managed water services meaning they use a drinking water source that can be contaminated with faeces (WHO, 2020). With such a pressing global health issue, it is clear that improvement to water systems is important and required in the Agenda 2030 Sustainable Development Goals (SDGs). However, to improve water systems and prove they are safe water sources, water quality testing must occur. A solution to this issue is the …
The Effects Of Farnesol, A Quorum Sensing Molecule From Candida Albicans, On Alcaligenes Faecalis, Savannah Hutson
The Effects Of Farnesol, A Quorum Sensing Molecule From Candida Albicans, On Alcaligenes Faecalis, Savannah Hutson
Undergraduate Honors Theses
Quorum sensing molecules have become a recent focus of study to learn if and how they can be used, both on their own and in conjecture with current antimicrobial methods, as a means of bacterial control. One such quorum sensing molecule is the sesquiterpene alcohol, Farnesol, which is synthesized and released by the fungus, Candida albicans. In most in-vivo cases, our laboratory has shown that Alcaligenes faecalis overtakes C. albicans, preventing its growth. However, as a way to counteract this inhibitory effect, Farnesol may be one way that Candida has found to fight back. In this study, we …
Second Messenger Cyclic-Di-Gmp Regulation In Acinetobacter Baumannii, Justin Deal
Second Messenger Cyclic-Di-Gmp Regulation In Acinetobacter Baumannii, Justin Deal
Undergraduate Honors Theses
Over time, “superbugs,” or bacteria that have become resistant to antibiotics, have become a great concern in modern medicine. Viable alternates are currently being looked into as effective and safe ways to prevent or treat infections caused by these superbugs. One such method is through the utilization of the second messenger molecule cyclic-di-GMP (c-di-GMP) that has been shown to regulate phenotypes within other bacteria that may control surface colonization in Acinetobacter baumannii. Through a series of experiments, the active enzymes that create c-di-GMP - diguanylate cyclases - and break down c-di- GMP - phosphodiesterases - have been inactivated in …
Effect Of Zinc On Microcystis Aeruginosa And Its Toxin Production, Jose L. Perez
Effect Of Zinc On Microcystis Aeruginosa And Its Toxin Production, Jose L. Perez
Seton Hall University Dissertations and Theses (ETDs)
Cyanobacteria harmful algal blooms (CHABs) are globally increasing biomasses of detrimental cyanobacteria due to anthropogenic water phosphorous and nitrogen loading and climate change. CHABs often produce secondary metabolites, cyanotoxins, that cause harmful effects to organisms, most water systems, and socioeconomic infrastructures. Additionally, the presence of heavy metal pollutant runoff in CHAB affected environments may result in CHAB population changes – aggravating toxigenicity. Zinc metal resistance and stress response were studied in microcystin (MC) cyanotoxin-producing Microcystis aeruginosa UTEX LB 2385 (M. aeruginosa UTEX LB 2385) and non-MC producing Microcystis aeruginosa UTEX LB 2386 (M. aeruginosa UTEX LB 2386) cyanobacteria. Molecular analysis …
Determining Ideal Swab Type For Collection Of The Microbiome For Forensic Identification Purposes, Natalie M. Wise
Determining Ideal Swab Type For Collection Of The Microbiome For Forensic Identification Purposes, Natalie M. Wise
Honors Projects
In recent years, forensic scientists have begun looking at the microbiome as a new possible human identification method. The microbiome is made up of all the microorganisms living on or in the human body.1 It is believed that it may be possible to use the microbiome as a unique identifier, to link cohabitating individuals, or even to connect a person with a specific location. In order to study the microbiome, we must first be able to successfully collect it, and then, release it from that collection tool for examination. This may sound simple, but this area of research is …
Anthrax Event Detection Using Twitter: Analysis Of Unigram And Bigrams For Relevant Vs Non-Relevant Tweets, Michele Miller, William L. Romine
Anthrax Event Detection Using Twitter: Analysis Of Unigram And Bigrams For Relevant Vs Non-Relevant Tweets, Michele Miller, William L. Romine
Celebration of Undergraduate & Graduate Research, Scholarship, and Creative Activities Materials
Due to the lack of anthrax attacks in recent times, researchers have used naturally occurring events to assess their anthrax detection models, but these provide little information on how the models will perform in the context of an unannounced, intentional release of a bioterrorism agent, like anthrax. Therefore, it is important to develop a detection model using data surrounding real anthrax scares and events.We develop a methodology to detect an anthrax-related event on Twitter. We describe a process to separate the tweets concerning anthrax-related events from those not related so experts can address misconceptions and fears in real-time.Most tweets were …
Investigating The Role Of Torc1 And The Transcription Factor Sfp1p In The Regulation Of Hmo1 Gene In Saccharomyces Cerevisiae, Mathew Damien Smith
Investigating The Role Of Torc1 And The Transcription Factor Sfp1p In The Regulation Of Hmo1 Gene In Saccharomyces Cerevisiae, Mathew Damien Smith
LSU Master's Theses
HMGB proteins are eukaryotic, chromatin-associated proteins that play roles in both DNA dynamics and transcription regulation. Hmo1p is an HMGB protein in Saccharomyces cerevisiae that behaves somewhat like a hybrid between mammalian HMGB proteins and the metazoan linker histone H1. mTORC1, a protein complex containing the Tor1p kinase and a major regulator of cellular growth, is inhibited by both rapamycin and stress. It has also been shown to not only associate with Hmo1p at various gene promoters, but also regulate the HMO1 gene itself through direct binding. In this study, the Hmo1p-mTORC1 relationship was further investigated through two questions: 1) …
Active Growth Of Non-Hydrothermal Subaqueous And Subaerial Barite (Baso4) Speleothems In Lechuguilla Cave (New Mexico, Usa), Max Wisshak, Hazel A. Barton, Katey E. Bender, Harvey R. Duchene
Active Growth Of Non-Hydrothermal Subaqueous And Subaerial Barite (Baso4) Speleothems In Lechuguilla Cave (New Mexico, Usa), Max Wisshak, Hazel A. Barton, Katey E. Bender, Harvey R. Duchene
International Journal of Speleology
Barite (BaSO4) speleothems have been reported from caves around the globe and interpreted to have chiefly formed in phreatic, hypogene, hydrothermal settings. Here we report two contrasting types of barite speleothems (bluish tabular crystals in a shallow pool and actively dripping greenish stalactites), which today form at lower temperatures in the non-hydrothermal and vadose environment of Lechuguilla Cave, New Mexico, USA. Scanning electron microscopy analysis, along with energy- and wavelength-dispersive X-ray spectroscopy (EDS, WDS), as well as X-ray diffraction (XRD), characterize the habit and chemical composition as barite. Fractionation of the minor element calcium is related to growth …
Dna Analysis And The Postmortem Submersion Interval From The Microbiome Of Waterlogged Sus Scrofa Skeletal Remains, Claire Cartozzo
Dna Analysis And The Postmortem Submersion Interval From The Microbiome Of Waterlogged Sus Scrofa Skeletal Remains, Claire Cartozzo
Theses and Dissertations
Following water-related deaths, soft tissue on victims’ remains may be entirely absent after a temperature dependent period of time. Due to their physical and chemical components, which protect them from environmental deterioration and biological attack, bones preserve DNA for longer periods of time. Therefore, the ability to both identify an individual and estimate the postmortem submersion interval (PMSI) may depend on DNA obtained from skeletal remains. The goals of the dissertation were to examine differences in both the degradation of skeletal DNA and the microbiome inhabiting bone in freshwater aquatic environments (e.g., Henley Lake and the James River). At each …
The Exploration Of Nanotoxicological Copper And Interspecific Saccharomyces Hybrids, Matthew Joseph Winans Phd
The Exploration Of Nanotoxicological Copper And Interspecific Saccharomyces Hybrids, Matthew Joseph Winans Phd
Graduate Theses, Dissertations, and Problem Reports (ETD)
Nanotechnology takes advantage of cellular biology’s natural nanoscale operations by interacting with biomolecules differently than soluble or bulk materials, often altering normal cellular processes such as metabolism or growth. To gain a better understanding of how copper nanoparticles hybridized on cellulose fibers called carboxymethyl cellulose (CMC) affected growth of Saccharomyces cerevisiae, the mechanisms of toxicity were explored. Multiple methodologies covering genetics, proteomics, metallomics, and metabolomics were used during this investigation. The work that lead to this dissertation discovered that these cellulosic copper nanoparticles had a unique toxicity compared to copper. Further investigation suggested a possible ionic or molecular mimicry …