The Lowry Landfill is an EPA Superfund site that operates a very unique microbial solution for cleaning up contaminated groundwater. The Biological Treatment System uses natural microbes to degrade 1,4-dioxane, and is a system that is pretty much unique in the US. Thanks in large part to the hard work of Jessie Romero, MS, we have a new publication out that gets us closer to a mechanistic understanding of how the system works, thanks to shotgun metagenomics and marker gene sequencing. In addition to data generated and analyzed by Jessie and the rest of the co-authors, this work also includes data generated by our first year General Biology students here at CU Denver! Read more here: Community and functional stability in a working bioreactor degrading 1,4-dioxane at the Lowry Landfill Superfund Site.

Congratulations to Derick, who defended his MS Thesis. Derick used the GROW river microbiome dataset to explore the distribution of antimicrobial resistance genes in US rivers. Congratulations, Derick!

Alyssa Cruz, an outstanding undergraduate researcher in the lab, has won the… Outstanding Undergraduate in Public Health Award, and won a poster award at the 2024 CU Denver Research and Creative Activities symposium. After graduation this semester, she’s headed off to do a PhD at the Sanford Burnham Prebys Medical Discovery Institute. Congratulations, Alyssa!

Congratulations to our collaborator Jessie Romero here at CU Denver, who won a poster award at this year’s Front Range Microbiome Symposium (FRMS) for her work on uncovering potential 1,4-dioxane mechanisms in a local bioremediation facility. Jessie’s use of shotgun metagenomics to uncover unique candidate degradation enzymes is a great demonstration of detailed hypothesis generation from high-throughput sequencing technology.

Congratulations to Lucia, who defended her MS Thesis today. Lucia’s thesis advanced our ability to predict and annotate plasmid contigs from environmental samples with metagonmic sequencing, and highlighted the strengths and limitations of current tools. Congratulations, Lucia!

Chris contributed to a new publication led by Joslynn Lee at Ft. Lewis College that describes “a curriculum and research framework designed to integrate an Indigenous approach when conducting authentic scientific research and to build interest and confidence at the undergraduate level.” Monitoring environmental microbiomes: Alignment of microbiology and computational biology competencies within a culturally integrated curriculum and research framework is published in Molecular Ecology Resources. Read this important work here. Some of the lessons we learned in this project have informed our Biology curriculum here at CU Denver.

We are all celebrating Jessie Romero, a collaborator from the Roane lab, for defending her MS Thesis, “Using Metagenomic Sequencing to Elucidate the Bacterial Degradation of 1,4-Dioxane in Groundwater Associated With a Colorado Landfill.” Jessie used metagenomic sequencing to identify several candidate organisms and proteins involved in 1,4-Dioxane degradation. Her work has opened up a whole new area of research for the lab and our collaborators in the Roane lab to pursue. Jessie also is the College of Liberal Arts and Sciences Outstanding MS graduate this semester. Congratulations, Jessie!

Congratulations to Alex Romero for a great MS Thesis defense. Alex’s thesis was titled, “Characterizing the Gut Microbiome of Golden Retrievers Using Highly Replicated 16s rRNA Sequencing.” Alex did a great job managing a complex project with many challenges, including hurdles brought on by the pandemic. Congratulations, Alex!

Congratulations to Alex Romero, who had his abstract accepted for poster presentation at the World Microbe Forum meeting this summer, and won two department travel awards to present at this meeting and the ASM Conference for Undergraduate Educators (ASMCUE) (with Andrew McDevitt from Laurel Hartley’s group). We’re excited for Alex to present his work on the Golden Retriever gut microbiome and the use of a Course-based Undergraduate Research Experience utilized to help complete this project.