Browsing Biology by Title
Now showing items 504-523 of 597
-
Salt Mass Balance Study and Plant Physiological Responses for an Enhanced Salt Phytoremediation System
(University of Waterloo, 2011-07-11)Salinity is one of the most severe environmental factors that limits global crop yield. Enhanced phytoremediation using plant growth promoting rhizobacteria (PGPR) has proven to be an effective and environmentally responsible ... -
Seasonal and environmental effects on physiological tolerances and gill adaptations of imperilled Eastern Sand Darter (Ammocrypta pellucida)
(University of Waterloo, 2024-02-15)In the absence of accurate biological information, conservation and recovery strategies carry the risk of failing to meet their objectives. Understanding species-specific physiological tolerances is important for several ... -
Seedlings of Temperate Tree Species Show Plastic Responses to Water Deficit and Heat Stress, But They Do Not Prevent Decline in Growth
(University of Waterloo, 2022-10-03)Species response to climate change is difficult to predict because warming involves the interaction of multiple stressors whose effects are simultaneous and therefore difficult to disentangle. To address this gap, I studied ... -
Sequence Analysis of the Bacterial Protein Elongation Factor P
(University of Waterloo, 2008-01-24)In 1975, Elongation Factor P (EF-P) protein was first discovered in the bacterium Escherichia coli. EF-P is believed to facilitate the translation of proteins by stimulating peptide bond synthesis for a number of different ... -
Sequence analysis of the genome of the plant growth-promoting bacterium Pseudomonas putida UW4
(University of Waterloo, 2012-07-20)The plant growth-promoting bacterium (PGPB) Pseudomonas putida UW4, previously isolated from the rhizosphere of common reeds growing on the campus of University of Waterloo, promotes plant growth in the presence of different ... -
Serum IgM, MH class IIβ genotype and respiratory burst activity do not differ between rainbow trout families displaying resistance or susceptibility to the coldwater pathogen, Flavobacterium psychrophilum
(Elsevier, 2018-01-20)Flavobacterium psychrophilum, the causative agent of bacterial coldwater disease (BCWD) is a significant threat to global aquaculture. True to its name, BCWD tends to occur at temperatures between 8 and 12°C and presents ... -
Sex differences in solute and water handling in the human kidney: Modeling and functional implications
(Elsevier, 2021-06)The kidneys maintain homeostasis by controlling the amount of water and electrolytes in the blood. That function is accomplished by the nephrons, which transform glomerular filtrate into urine by a transport process mediated ... -
Significance of Methylthioadenosine Metabolism to Plant Growth and Development
(University of Waterloo, 2012-01-24)Arabidopsis thaliana contains two genes annotated as methylthioadenosine nucleosidases (MTN): MTN1, At4g38800 and MTN2, At4g34840. This enzyme activity hydrolyzes the methylthioadenosine (MTA) produced by nicotianamine ... -
Similar hibernation physiology in bats across broad geographic ranges
(Springer, 2021-08-23)Species with broad geographic ranges may experience varied environmental conditions throughout their range leading to local adaptation. Variation among populations reflects potential adaptability or plasticity, with ... -
Single Molecule Force Spectroscopy Investigations of Amyloid-β Aggregation
(University of Waterloo, 2013-10-29)Alzheimer’s Disease is a neurodegenerative disease affecting over five million people in the United States alone, with almost half a million new cases every year. As the population ages, these figures will only increase ... -
The Sinorhizobium meliloti ExoS/ChvI two-component regulatory system
(University of Waterloo, 2009-09-24)Exopolysaccharides are essential for the establishment of the symbiosis between Sinorhizobium meliloti and Medicago sativa (alfalfa). The ExoS/ChvI two-component regulatory system is known as a regulator of succinoglycan ... -
Solvent production by the hyperthermophilic archaeon Hyperthermus butylicus
(University of Waterloo, 2021-08-27)Hyperthermus butylicus is one of the few hyperthermophilic (organisms that thrive in temperatures 80°C and above) archaea that can produce 1-butanol as a major fermentation end-product. The reported end-products (acetone, ... -
Sources and Controls of Sulphur Export in Precambrian Shield Catchments in South-central Ontario
(University of Waterloo, 2002)A series of studies was undertaken at Plastic Lake-1 (PC1) to determine the sources and controls on S cycling in small headwater catchments on the Precambrian Shield in south-central Ontario. Two observations were made ... -
Spatial and temporal food web dynamics of a contaminated Lake Ontario embayment, Hamilton Harbour
(University of Waterloo, 2009-04-30)Hamilton Harbour, a semi-enclosed bay located at the western end of Lake Ontario, is listed as one of the most polluted systems in the Great Lakes. Anthropogenic influences such as four wastewater treatment plants, two ... -
Spatial and temporal patterns of habitat use in anadromous Arctic charr Salvelinus alpinus in nearshore marine and overwintering lake environments
(University of Waterloo, 2019-01-15)Even though anadromy is integral to the life history of the Arctic charr (Salvelinus alpinus) in many northern regions, little is known about what shapes the patterns of anadromy. Moreover, little is known about the habitat ... -
Spatiotemporal patterns of arsenic, antimony, and lead deposition in a sub-arctic gold mining region of Canada
(University of Waterloo, 2021-01-25)Mining operations at Giant and Con mines (Northwest Territories, Canada) resulted in the release of >20,000 tonnes of arsenic trioxide (As2O3) into the atmosphere, mainly during the 1950s, which were deposited on the ... -
Spatiotemporal Shifts in Cyanobacterial Communities in a Northern Temperate Watershed – Applications of Next-Generation Sequencing and Implications for Monitoring and Climate Change Adaptation
(University of Waterloo, 2021-08-05)Cyanobacteria, a group of photosynthetic bacteria, threaten water quality and drinking water resources globally through the production of potent toxins and the formation of dense surface blooms. These bloom events are ... -
Stable isotope analyses (δ15N, δ13C) as a tool to define exposure of white sucker (Catostomus commersonii) to pulp mill effluent in Jackfish Bay, Lake Superior
(University of Waterloo, 2016-02-17)Effects of effluent from the pulp mill in Terrace Bay, Ontario, on fish have been extensively studied since the late 1980s. Fish collected at this site over the past several decades have shown a variety of physiological ... -
Stable Isotope Ecology of Tropical Bats
(University of Waterloo, 2019-08-12)Stable isotopes have been used to characterize differences in animal diet and behaviour since experimental studies by DeNiro and Epstein (1979; 1981). Examining isotopic ratios enables researchers to track how animals ... -
Starch Glycan Utilization by the Gut Microbiota: Structural and Biochemical Insights Into Starch Digestion and the Role of the Colon Microbiota
(University of Waterloo, 2016-05-12)The human digestive system is resident to a highly populated ecosystem of bacterial species known as the colon microbiota, which contributes significantly to our assimilation of dietary and mucosal carbohydrates. Bacteroides ...