Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 7 of 7 for “"Copper tolerance"”.
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Copper tolerance of Listeria monocytogenes strain DRDC8.
… strain DRDC8, the ctpA gene encodes a copper transporting P-type ATPase that apparently maintains intra-cellular copper ion homeostasis (Francis & Thomas, 1997a) and is also required for persistent infection of the liver and spleens of mice (Francis & Thomas, 1997b). However, the …
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Investigating the Genetic, Evolutionary, and Functional Mechanisms of Adaptations to Copper Mine Tailings in Mimulus guttatus
<p>The evolution of copper tolerance in the common yellow monkeyflower, Mimulus guttatus, is a classic example of rapid adaptation in plants; however, little is yet known about the genetic, functional, and evolutionary mechanisms involved. How does excess copper cause toxicity in M. guttatus, and …
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Further characterisation of the envelope stress responses of Salmonella Typhimurium
… and omrB). Our data confirm Cpx contribution to copper tolerance, a positive regulator of the heat shock sigma factor rpoH and adds polyamine homeostasis and regulation of host cell apoptosis to the growing list of Cpx regulated processes. Furthermore, we present the first transcriptomic …
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The bacterial ecology and function from a sub-surface critical zone
… However, isolate growth rates and copper tolerance show most isolates inhabit areas of sub-optimal growth potential. Environmental factors such as temperature and pH may influence bacterial divers ity, although the presence of organics may override these other influences. The …
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Effect of a heavy metal on ecto- and vesicular-arbuscular mycorrhizal fungi: the physiology, ultrastructure, and ecology of copper stress and tolerance
… aspects of the response of mycorrhizal fungi to copper, and a brief conclusion. The first chapter examines the enzyme tyrosinase in several ectomycorrhizal fungi and shows that its activity is altered in these fungi in response to copper. Polyamines are also examined in this chapter, and it is …
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Potential Approaches to Limiting Group A Streptococcus Virulence
… First, we investigated GAS mechanisms of copper tolerance. Copper plays an important role in the development and maintenance of the human immune system. Macrophages utilize copper as an additional stressor to aid in bacterial killing. In GAS, we identified a highly conserved set of …
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Identification and analysis of copper resistance and homeostasis genes in a new copper-tolerant Alteromonas macleodii bacterial strain
… generating interesting observations regarding copper-resistance systems representation in different bacterial strains. Both resistant strains of Alteromonas macleodii analyzed show higher number of copper-resistance related genes in their genome. The search for a conserved DNA sequence motif …