Open Access. Powered by Scholars. Published by Universities.®
Organismal Biological Physiology Commons™
Open Access. Powered by Scholars. Published by Universities.®
- Discipline
-
- Biochemistry, Biophysics, and Structural Biology (3)
- Molecular Biology (3)
- Bacteriology (2)
- Biology (2)
- Cell Biology (2)
-
- Cell and Developmental Biology (2)
- Environmental Microbiology and Microbial Ecology (2)
- Physiology (2)
- Animal Sciences (1)
- Aquaculture and Fisheries (1)
- Arts and Humanities (1)
- Cellular and Molecular Physiology (1)
- Comparative and Evolutionary Physiology (1)
- Developmental Biology (1)
- Ecology and Evolutionary Biology (1)
- Environmental Health (1)
- Environmental Sciences (1)
- Genetics (1)
- Genetics and Genomics (1)
- Immunology and Infectious Disease (1)
- Indigenous Studies (1)
- Marine Biology (1)
- Molecular and Cellular Neuroscience (1)
- Neuroscience and Neurobiology (1)
- Other Microbiology (1)
- Parasitology (1)
- Pathogenic Microbiology (1)
- Institution
- Keyword
-
- Evolution (2)
- <p>Bacteria - Ohio River.</p> <p>Water quality - Ohio River.</p> (1)
- Acetate (1)
- Aeruginosa (1)
- Amoebae (1)
-
- Amoebozoa (1)
- Ancenstral Puebloan Culture (1)
- Antibiotic Resistant Bacteria (1)
- Archaeal ammonia oxidation (1)
- Archeology (1)
- Archeoparasitology (1)
- BifA (1)
- Biofilm (1)
- Biological sciences (1)
- Biomass (1)
- Brain injury (1)
- Chaco canyon (1)
- Chemostat (1)
- Chinook (1)
- Coliform Bacteria (1)
- Colon (1)
- Crenarchaeota (1)
- Cyclic-di-GMP (1)
- Development (1)
- Effects of Land Use (1)
- Environmental studies program (1)
- Eumycetozoa (1)
- Fermentation (1)
- Furfural (1)
- Genes (1)
- Publication
- Publication Type
Articles 1 - 9 of 9
Full-Text Articles in Organismal Biological Physiology
Potential For Nitrogen Fixation And Nitrification In The Granite-Hosted Subsurface At Henderson Mine, Co, Elizabeth D. Swanner, Alexis S. Templeton
Potential For Nitrogen Fixation And Nitrification In The Granite-Hosted Subsurface At Henderson Mine, Co, Elizabeth D. Swanner, Alexis S. Templeton
Elizabeth D. Swanner
The existence of life in the deep terrestrial subsurface is established, yet few studies have investigated the origin of nitrogen that supports deep life. Previously, 16S rRNA gene surveys cataloged a diverse microbial community in subsurface fluids draining from boreholes 3000 feet deep at Henderson Mine, CO, USA (Sahl et al., 2008). The prior characterization of the fluid chemistry and microbial community forms the basis for the further investigation here of the source of NH4+. The reported fluid chemistry included N2, NH4+ (5–112 μM), NO2− (27–48 μM), and NO3− (17–72 μM). In this study, the correlation between low NH4+ concentrations …
Systematics Of Protosteloid Amoebae, Lora Lindley Shadwick
Systematics Of Protosteloid Amoebae, Lora Lindley Shadwick
Graduate Theses and Dissertations
Because of their simple fruiting bodies consisting of one to a few spores atop a finely tapering stalk, protosteloid amoebae, previously called protostelids, were thought of as primitive members of the Eumycetozoa sensu Olive 1975. The studies presented here have precipitated a change in the way protosteloid amoebae are perceived in two ways: (1) by expanding their known habitat range and (2) by forcing us to think of them as amoebae that occasionally form fruiting bodies rather than as primitive fungus-like organisms. Prior to this work protosteloid amoebae were thought of as terrestrial organisms. Collection of substrates from aquatic habitats …
Interspecies Comparison Of Αii-Spectrin Abundance Between Chinook Salmon And Steelhead, Brielle D. Kemis, Ann L. Miracle, Katie A. Wagner, Christa M. Woodley
Interspecies Comparison Of Αii-Spectrin Abundance Between Chinook Salmon And Steelhead, Brielle D. Kemis, Ann L. Miracle, Katie A. Wagner, Christa M. Woodley
STAR Program Research Presentations
Salmonids, such as Chinook salmon (Oncorhynchus tshawytscha) and steelhead (O. mykiss), are a staple economic, recreational, tribal, and environmental resource, yet many populations are unsustainable. This study was part of a broad scale effort to monitor the impact of downstream migration obstacles on juvenile salmonid health and survival, which is an essential step towards increasing Smolt-to-Adult Return ratios (SARs). The objective of this study was to determine if juvenile Chinook salmon and steelhead exhibit differing quantities of alphaII-Spectrin Breakdown Products (SBDPs) over two consecutive spring migration periods, indicative of neurogenesis rate and/or biological response to head …
Evidence Of A Rudimentary Colon In Leucoraja Erinacea, Alyssa M. Simeone
Evidence Of A Rudimentary Colon In Leucoraja Erinacea, Alyssa M. Simeone
Honors Theses
During the transition of animals from water onto land, the colon is believed to have evolved as an essential water-absorbing organ in terrestrial vertebrates to prevent desiccation. The class Chondrichthyes, comprised of sharks, rays, and skates, are isotonic to their marine environment, and thus do not require a functional colon. The Chondrichthyes are an excellent organism for developmental and physiological studies in evolutionary context because they have undergone little evolutionary change since their appearance 450 million years ago. Previous histochemical studies demonstrate potential water absorbing properties in the digestive tract of the little skate, Leucoraja erinacea (Theodosiou et al., 2007). …
Archaeoparasitology Of Chaco Canyon, Rachel Paseka
Archaeoparasitology Of Chaco Canyon, Rachel Paseka
Department of Environmental Studies: Undergraduate Student Theses
Ancient cultures of the Colorado Plateau have been a focus of archaeoparasitology since its inception, and a vast parasitological history is recorded in coprolites preserved in this arid region. The inhabitants of Chaco Canyon dominated Ancestral Puebloan culture between 1050 and 1120 AD and were responsible for the construction of great towns, road systems, and early agriculture. Analysis of the parasites preserved in fecal remains contributes to an increased knowledge of ancient Chacoan health and culture. Nineteen coprolites from four sites in Chaco Canyon were rehydrated and analyzed microscopically for parasite remains. Rhabditiform and filariform nematode larvae were found from …
Structured Multiple Endosymbiosis Of Bacteria And Archaea In A Ciliate From Marine Sulfidic Sediments: A Survival Mechanism In Low Oxygen, Sulfidic Sediments?, Virginia P. Edgcomb, Edward R. Leadbetter, William A. Bourland, David Beaudoin, Joan M. Bernhard
Structured Multiple Endosymbiosis Of Bacteria And Archaea In A Ciliate From Marine Sulfidic Sediments: A Survival Mechanism In Low Oxygen, Sulfidic Sediments?, Virginia P. Edgcomb, Edward R. Leadbetter, William A. Bourland, David Beaudoin, Joan M. Bernhard
William Bourland
Marine micro-oxic to sulfidic environments are sites of intensive biogeochemical cycling and elemental sequestration, where prokaryotes are major driving forces mediating carbon, nitrogen, sulfur, phosphorus, and metal cycles, important from both biogeochemical and evolutionary perspectives. Associations between single-celled eukaryotes and bacteria and/or archaea are common in such habitats. Here we describe a ciliate common in the micro-oxic to anoxic, typically sulfidic, sediments of Santa Barbara Basin (CA, USA). The ciliate is 95% similar to Parduzcia orbis (18S rRNA). Transmission electron micrographs reveal clusters of at least three different endobiont types organized within membrane-bound sub-cellular regions. Catalyzed reporter deposition–fluorescent in situ …
Performance Screening Of Chemostat Adapted Recombinant Zymomonas Mobilis Strains, Deirdre M. Beard, Nancy Dowe
Performance Screening Of Chemostat Adapted Recombinant Zymomonas Mobilis Strains, Deirdre M. Beard, Nancy Dowe
STAR Program Research Presentations
Corn stover biomass can be pretreaed and hydrolyzed into soluble sugars to be fermented by microorganisms to ethanol. NREL has developed a recombinant bacteria Zymomonas mobilis 8b that metabolizes both five and six carbon sugars. During pretreatment, toxic inhibitors such as furfural and acetate are produced. NREL has made an attempt to adapt two sub-strains of Z. mobilis 8b to acetate and furfural by using a chemostat method. During the chemostat process, cultures were frozen back in glycerol and saved. In this study, those frozen cultures were revived and analyzed for performance in environments with varying concentrations of furfural and …
Effects Of Land Use In The Ohio River Basin On The Distribution Of Coliform And Antibiotic Resistant Bacteria In The Ohio River, Gene Chou
Theses, Dissertations and Capstones
Recent studies indicate that antibiotic resistant bacteria can be useful as indicators of water quality (1, 2, 5, 7, 8, 9, 10). Studies in our laboratory have shown that fecal pollution did not fully explain the distribution or the frequency of antibiotic resistant bacteria in the Ohio River (27, 28). Therefore, it is important to understand the factors that affect the distribution of antibiotic resistant bacteria in aquatic habitat. The purpose of this study was to examine the correlations between land use, water quality, and concentration of antibiotic resistant bacteria in the Ohio River. Mid-channel water samples were collected at …
A Messenger Molecule Governs Interdependency In An Evolved Pseudomonas Aeruginosa Biofilm Community, Thomas Macelliott Johnson
A Messenger Molecule Governs Interdependency In An Evolved Pseudomonas Aeruginosa Biofilm Community, Thomas Macelliott Johnson
Honors Theses and Capstones
Biofilm populations are known to harbor great diversity, but the importance of this diversity is not fully understood. A likely contributor to this variation is the second messenger molecule cyclic-di-GMP: low levels associate with a planktonic lifestyle while high levels favor biofilm formation. In ongoing studies of an evolving biofilm population of Pseudomonas aeruginosa (PA), we observed extensive ecological diversification that may relate to this lifestyle switch. In PA, the gene bifA encodes a phosphodiesterase that is known to degrade cyclic-di-GMP and reduce biofilm. This gene was cloned onto a plasmid under control of an inducible promoter and the plasmid …