Open Access. Powered by Scholars. Published by Universities.®
Environmental Microbiology and Microbial Ecology Commons™
Open Access. Powered by Scholars. Published by Universities.®
- Discipline
- Keyword
Articles 1 - 3 of 3
Full-Text Articles in Environmental Microbiology and Microbial Ecology
Microbial Degradation Of Urea Oligomers: Potential Slow Release Nitrogen Fertilizers, Maddy Bygd
Microbial Degradation Of Urea Oligomers: Potential Slow Release Nitrogen Fertilizers, Maddy Bygd
Departmental Honors Projects
Urea is the most commonly used nitrogen compound in fertilizers across the world. It provides the most nitrogen at the lowest cost. However, with the size and solubility of this compound, it is easily washed out of the soil. This results in the need to continuously add fertilizer to fields, creating adverse effects on the environment due to nitrogen runoff and leading to increased expenses for farmers. Triuret, a urea oligomer, is a compound with promising potential for use as a nitrogen source, providing a slower release of nitrogen into the soil. It is hypothesized that this compound can be …
A Survey Of Β-Lactam Antibiotic Resistance Genes And Culturable Ampicillin Resistant Bacteria In Minnesota Soils, Emily M. Wollmuth
A Survey Of Β-Lactam Antibiotic Resistance Genes And Culturable Ampicillin Resistant Bacteria In Minnesota Soils, Emily M. Wollmuth
Departmental Honors Projects
Since the discovery of penicillin, antibiotics have been an essential tool in the treatment of bacterial infections and diseases. It is estimated that antibiotics and antibiotic resistance genes have existed for billions of years. With the increasing appearance of resistant pathogenic bacteria, there has been growing concern. β-lactam antibiotics make up the largest portion of the global market, so resistance to these antibiotics is especially alarming. It has been theorized that frequency and type of antibiotic resistance genes vary by area. Previous studies suggest that these differences may be related to antibiotic use in agricultural and urban areas. To survey …
Antibiotic Resistance Genes In Minnesota Soil Bacteria From Areas Of High And Low Ferric Iron, Gunner L. Drossel, Presley Martin Phd
Antibiotic Resistance Genes In Minnesota Soil Bacteria From Areas Of High And Low Ferric Iron, Gunner L. Drossel, Presley Martin Phd
Departmental Honors Projects
Naturally-occurring antibiotic resistance genes in soil bacteria represent a potentially important reservoir of genes that could contribute to antibiotic resistance of human pathogens. It has been reported that over 40 genes in bacterial genomes are controlled by concentrations of ferric iron. We examined the effect of soil metal content on the level of resistance to two antibiotics, ampicillin (Amp) and tetracycline (Tet), and the presence of multiple genes that code for efflux pump-mediated resistance. These pumps act to export toxins (e.g. heavy metals and antibiotics, perhaps). Because of this, growth in heavy metal-contaminated soils might select for antibiotic resistance. Ninety-six …