Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 3 of 3
Full-Text Articles in Microbiology
Assesment Of Antibiotic Resistant Gene Expression In Clinical Isolates Of Pseudomonas Aeruginosa, Dustin Esmond
Assesment Of Antibiotic Resistant Gene Expression In Clinical Isolates Of Pseudomonas Aeruginosa, Dustin Esmond
Biology Theses
Increasing prevalence of nosocomial infections by antimicrobial resistant pathogens resulting in higher mortality rates and financial burden is of great concern. Pseudomonas aeruginosa represents one of six highly virulent “ESKAPE” pathogens that exhibit considerable intrinsic drug resistance as well as mechanisms for acquiring further resistance. As many of these mechanisms are regulated through gene expression, we sought to identify regulatory strategies and patterns at play in 23 clinical isolates collected from Baku, Azerbaijan and Tyler, Texas, USA. Real-time quantitative polymerase chain reaction was performed on six gene targets implicated in resistance and contrasted with antibiotic phenotypes. We found AmpC cephalosporinase …
Comparative Microbiome Analysis Of The Funfus Gardening Ant Species Trachymyrmex Arizonensis, Chase D. Rowan
Comparative Microbiome Analysis Of The Funfus Gardening Ant Species Trachymyrmex Arizonensis, Chase D. Rowan
Biology Theses
Fungus-growing ants (Attini: Formicidae) and their fungal cultivars participate in ant-fungus mutualism that share a 50-million-year-old coevolutionary history. Fungal cultures are grown in gardens alongside ants and a diverse collection of microbes that interact with both species in mutualistic, commensal, and antagonistic relationships. These microbes aid in digestion and detoxification of food, provide essential nutrients, help in nest hygiene, and play a dominant role in defense against pathogens and disease. Microbial communities of many model species have been shown to change in a laboratory setting as compared to their natural environment. High-throughput 16s sequencing of the V4 variable region was …
A Cophylogenetic Analysis Of Fungus Gardening Ants And Their Symbiotic Fungi, Katherine Beigel
A Cophylogenetic Analysis Of Fungus Gardening Ants And Their Symbiotic Fungi, Katherine Beigel
Biology Theses
Fungus-growing ants (Tribe Attini) and their fungal cultivars share a 50-million-year coevolutionary history. Large scale phylogenetic analyses depict a strong co-phyletic signal among ants and their farmed fungi yet fungus sharing among unrelated ant lineages is somewhat widespread. An overview of sharing has been hampered by a lack of genetic markers that exhibit intraspecific variation and surveys across geographic regions. For example, previous studies have shown similar sequences of the internal transcribed spacer (ITS) region of fungus in different species of Trachymyrmex, suggesting that these ant species are farming the same fungal clone. To examine whether this was a …