Search for dissertations about: "Bacterial growth rate"

Showing result 1 - 5 of 78 swedish dissertations containing the words Bacterial growth rate.

2. 1. Bacterial and fungal growth in soil: The effect of temperature and substrate addition

   Author : Stephanie Reischke; MEMEG; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Bacterial growth; Fungal growth; Respiration; Carbon loading; Glucose mineralisation; Temperature adaptation; Temperature sensitivity; Temperature dependence;

   Abstract : Bacteria and fungi are the main agents in decomposition of soil organic matter. Their activity is determined by the availability and quality of substrate, especially its content of carbon, but also nitrogen and phosphorus. Other environmental factors, which affect the activity of the microbial community in soil, are temperature, moisture and pH. READ MORE

4. 2. On the Ecology of Saprotrophic Fungi and Bacteria in Soil: Biotic and Abiotic Control of Growth Rates

   Author : Johannes Rousk; MEMEG; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; decomposer ecology; soil pH; temperature relationship; Fungal growth; litter decomposition; bacterial growth; C:N;

   Abstract : Two groups of organisms dominate the decomposition in soil: fungi and bacteria. One of the most important parameters to optimise for any organism is its growth, and thus a direct way to study the effect of environmental factors on fungi and bacteria in soil is to measure their growth rate. READ MORE

5. 3. Bacterial Resistance to Antimicrobial Peptides : Rates, Mechanisms and Fitness Effects

   Author : Maria Pränting; Dan Andersson; Ian Chopra; Uppsala universitet; []
   Keywords : antimicrobial peptides; antibiotic resistance; fitness cost; bacterial evolution; small colony variants; cyclotides; Biologi med inriktning mot mikrobiologi; Biology with specialization in Microbiology; Mikrobiologi; Microbiology;

   Abstract : The rapid emergence of bacterial resistance to antibiotics has necessitated the development of alternative treatment strategies. Antimicrobial peptides (AMPs) are important immune system components that kill microbes rapidly and have broad activity-spectra, making them promising leads for new pharmaceuticals. READ MORE

6. 4. Dynamics of the Bacterial Genome : Rates and Mechanisms of Mutation

   Author : Sanna Koskiniemi; Dan Andersson; Diarmaid Hughes; Ivan Matic; Uppsala universitet; []
   Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; bacteria; bacterial evolution; genome reduction; gene loss; serial passage; DNA homology; tranlesion DNA polymerase; stress; Microbiology; Mikrobiologi; Bacteriology; Bakteriologi; Evolutionary Genetics; Evolutionär genetik; Mikrobiologi; Microbiology;

   Abstract : Bacterial chromosomes are highly dynamic, continuously changing with respect to gene content and size via a number of processes, including deletions that result in gene loss. How deletions form and at what rates has been the focus of this thesis. In paper II we investigated how chromosomal location affects chromosomal deletion rates in S. READ MORE

7. 5. Mechanisms and Biological Costs of Bacterial Resistance to Antimicrobial Peptides

   Author : Hava Lofton Tomenius; Dan I Andersson; Ørjan Samuelsen; Uppsala universitet; []
   Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; antimicrobial peptides; antibiotic resistance; fitness cost; Salmonella Typhimurium; Staphylococcus aureus; bile; serum; pH response; growth rate; mice; phoP; pmrB; waaY; LPS; LL-37; defensins; membrane potential; Mikrobiologi; Microbiology;

   Abstract : The global increasing problem of antibiotic resistance necessarily drives the pursuit and discovery of new antimicrobial agents. Antimicrobial peptides (AMPs) initially seemed like promising new drug candidates. Already members of the innate immune system, it was assumed that they would be bioactive and non-toxic. READ MORE