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Full-Text Articles in Environmental Microbiology and Microbial Ecology
Bacterial Mechanisms Of Toxicity And Resistance To Organoarsenicals, Luis D. Garbinski
Bacterial Mechanisms Of Toxicity And Resistance To Organoarsenicals, Luis D. Garbinski
FIU Electronic Theses and Dissertations
Arsenic is a toxic element prevalent in the environment since the origin of life on Earth. Bacteria evolved in an arsenic-rich environment, where they developed ways to both overcome arsenic toxicity and harness it to compete with other organisms. These mechanisms include chemical modifications (e.g. oxidation, methylation), degradation, and efflux. The goal of this dissertation is to better characterize these mechanisms, illuminating the arsenic biogeocycle and allowing us to harness organoarsenical toxicity for novel antibiotics. A goal of my research was to elucidate the antibiotic properties of MAs(III), which is synthesized by bacteria to thrive over other bacteria, by identifying …
Microbial Functional Diversity And The Associated Biogeochemical Interactions Across Miami-Dade County, Florida Soils, Priyanka Kushwaha
Microbial Functional Diversity And The Associated Biogeochemical Interactions Across Miami-Dade County, Florida Soils, Priyanka Kushwaha
FIU Electronic Theses and Dissertations
Decomposition of soil organic matter by microbial processes results in carbon sequestration within soils and/or carbon loss via atmospheric emission of carbon dioxide and methane. Natural as well as anthropogenic factors have been documented to impact soil microbial diversity and the associated biogeochemical functions. The soil microbial communities co-inhabiting Miami-Dade County soils, Florida are under threat because of the ongoing restoration efforts in the adjoining Florida Everglades Parks, predicted climatic changes such as sea-level rise and high rainfall, as well as urbanization. Therefore, an improved understanding of the current microbial functional communities is essential to better assess the impact of …