Environmental Sciences Faculty Research, Publications and Presentations
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Carrageenans, Sulphated Polysaccharides of Red Seaweeds, Differentially Affect Arabidopsis thaliana Resistance to Trichoplusia ni (Cabbage Looper)
Carrageenans are a collective family of linear, sulphated galactans found in a number of commercially important species of marine red alga. These polysaccharides are known to elicit defense responses in plant and animals ... -
Liuwei Dihuang (LWDH), a Traditional Chinese Medicinal Formula, Protects against beta-Amyloid Toxicity in Transgenic Caenorhabditis elegans
Liuwei Dihuang (LWDH), a classic Chinese medicinal formula, has been used to improve or restore declined functions related to aging and geriatric diseases, such as impaired mobility, vision, hearing, cognition and ... -
Tasco (R), a Product of Ascophyllum nodosum, Imparts Thermal Stress Tolerance in Caenorhabditis elegans
Tasco (R), a commercial product manufactured from the brown alga Ascophyllum nodosum, has been shown to impart thermal stress tolerance in animals. We investigated the physiological, biochemical and molecular bases of ... -
Automated, Low-Cost Yield Mapping of Wild Blueberry Fruit
The presence of weeds, bare spots, and variation in fruit yield within wild blueberry fields emphasizes the need for yield mapping for site-specific application of agrochemicals. An automated yield monitoring system ... -
Delineating Management Zones for Site Specific Fertilization in Wild Blueberry Fields
The concept of management zones has been proposed as a solution to the problems associated with the soil variability to more efficiently apply agricultural inputs on a site-specific basis. This study was designed to ... -
Detecting Bare Spots in Wild Blueberry Fields using Digital Color Photography
Wild blueberry fields are developed from native stands on deforested land by removing competing vegetation The majority of fields are situated in naturally acidic and non-fertile sods that have high proportions of bare ... -
Emergent Properties of Patch Shapes Affect Edge Permeability to Animals
Animal travel between habitat patches affects populations, communities and ecosystems. There are three levels of organization of edge properties, and each of these can affect animals. At the lowest level are the different ... -
Nitric oxide reductase-targeted real-time PCR quantification of denitrifier populations in soil
The quantification of denitrifying bacteria is a component in the further understanding of denitrification processes in the environment. Real-time PCR primers were designed to target two segments of the denitrifier ... -
Changes in bacterial denitrifier community abundance over time in an agricultural field and their relationship with denitrification activity
This study measured total bacterial and denitrifier community abundances over time in an agricultural soil cropped to potatoes (Solanum tuberosum L.) by using quantitative PCR. Samples were collected on 10 dates from ... -
Controlled release fertilizer product effects on potato crop response and nitrous oxide emissions under rain-fed production on a medium-textured soil
Zebarth, B. J., Snowdon, E., Burton, D. L., Goyer, C. and Dowbenko, R. 2012. Controlled release fertilizer product effects on potato crop response and nitrous oxide emissions under rain-fed production on a medium-textured ... -
Permeable Synthetic Covers for Controlling Emissions from Liquid Dairy Manure
Liquid manure storages emit greenhouse gases (GHGs) and ammonia (NH(3)), which can have negative effects in the atmosphere and ecosystems. Installing a floating cover on liquid manure storages is one approach for ... -
Effect of pH and Temperature on Denitrification Gene Expression and Activity in Pseudomonas mandelii
Pseudomonas mandelii liquid cultures were studied to determine the effect of pH and temperature on denitrification gene expression, which was quantified by quantitative reverse transcription-PCR. Denitrification was ... -
Effect of Nitrate and Acetylene on nirS, cnorB, and nosZ Expression and Denitrification Activity in Pseudomonas mandelii
Nitrate acts as an electron acceptor in the denitrification process. The effect of nitrate in the range of 0 to 1,000 mg/liter on Pseudomonas mandelii nirS, cnorB, and nosZ gene expression was studied, using quantitative ... -
Nitric Oxide Reductase Gene Expression and Nitrous Oxide Production in Nitrate-Grown Pseudomonas mandelii
Pure cultures of Pseudomonas mandelii were incubated with or without nitrate, which acts as a substrate and an electron acceptor for denitrification. Nitric oxide reductase (cnorB) gene expression was measured using a ... -
Changes in Denitrifier Abundance, Denitrification Gene mRNA Levels, Nitrous Oxide Emissions, and Denitrification in Anoxic Soil Microcosms Amended with Glucose and Plant Residues
In agricultural cropping systems, crop residues are sources of organic carbon -
Modification of the biophysical water function to predict the change in soil mineral nitrogen concentration resulting from concurrent mineralization and denitrification
Georgallas, A., Dessureault-Rompre, J., Zebarth, B. J., Burton, D. L., Drury, C. F. and Grant, C. A. 2012. Modification of the biophysical water function to predict the change in soil mineral nitrogen concentration ... -
Chemometric analysis of the amino acid requirements of antioxidant food protein hydrolysates
The contributions of individual amino acid residues or groups of amino acids to antioxidant activities of some food protein hydrolysates were investigated using partial least squares (PLS) regression method. PLS models ...
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