Marshall BOOM Lab

      Biofilm Origins, Oecology, and Metabolism

Exploring the extraordinary metabolic versatility of the microbes in and around us


In vivo Evolution

Understanding the metabolic adaptations in vivo

Antimicrobial Tolerance and Resistance

Studying the evolution of resistance in biofilms.

Dynamic Biofilm Surveillance with Bioelectrochemical Systems

Real-time monitoring of metabolism in biofilms.


Google Scholar Page

  1. Scribner MR, Santos-Lopez A, Marshall CW, Deitrick C, Cooper VS. Parallel evolution of tobramycin resistance across species and environments. 2019. bioRxiv.

  2. Santos-Lopez* A, Marshall* CW, Scribner MR, Snyder DJ, Cooper VS. Evolutionary Pathways to Antibiotic Resistance are Dependent Upon Environmental Structure and Bacterial Lifestyle. 2019. eLife. 8:e47612.

  3. Lopez S, Martin JM, Johnson M, Kurs-Lasky Horne WT, Marshall CW, Cooper VS, Williams JV, Shaikh N. A method of processing nasopharyngeal swabs to enable multiple testing. 2019. Pediatric Research.

  4. Payne RB, Ghosh U, May HD, Marshall CW, Sowers KR. A Pilot-Scale Field Study: In Situ Treatment of PCB-Impacted Sediments with Bioamended Activated Carbon. 2019. Environmental Science and Technology. DOI: 10.1021/acs.est.8b05019

  5. Gloag* ES, Marshall* CW, Snyder DJ, Lewin GR, Harris JS, Chaney SB, Whiteley M, Cooper VS, Wozniak DJ. The Pseudomonas aeruginosa Wsp pathway undergoes positive evolutionary selection during chronic infection. 2019. mBio. 10 (4), e01698-19.

  6. Dunlap DG, Marshall CW, Fitch A, Rapport SF, Cooper VS, McVerry B, Morris A, GD Kitsios. Bacterial DNA next generation sequencing can detect culprit pathogens missed by cultures and impact antibiotic management decisions in severe bacterial pneumonia. 2018. American Journal of Case Reports. 19, 1405-1409.

  7. Mustapha M, Li B, Pacey M, Mettus R, McElheny C, Marshall CW, Ernst R, Cooper V, Doi Y. Phylogenomics of Colistin-Susceptible and Resistant, Extensively Drug-Resistant Acinetobacter baumannii. 2018. Journal of Antimicrobial Chemotherapy. 73 (11), 2952-2959.

  8. Turner C, Marshall CW, Cooper V. Parallel genetic adaptation across environments differing in mode of growth or resource availability. 2018. Evolution Letters.

  9. Melvin J, Gaston J, Phillips S, Springer M, Marshall CW, Shanks R, Bomberger J. Pseudomonas aeruginosa Contact-Dependent Growth Inhibition Plays a Dual Role in Host-Pathogen Interactions. 2017. mSphere. 2 (6). e00336-17.

  10. Marshall CW, DE Ross, KM Handley, PB Weisenhorn, CS Henry, JA Gilbert, HD May, RS Norman. Metabolic Reconstruction and Modeling Microbial Electrosynthesis. 2017. Scientific Reports. 10.1038/s41598-017-08877-z (SREP-17-14408).

  11. Ross DE, Marshall CW, May HD, Norman RS. Metagenome-Assembled Genome Sequences of Acetobacterium sp. Strain MES1 and Desulfovibrio sp. Strain MES5 from a Cathode-Associated Acetogenic Microbial Community. 2017. Genome Announcements. 5 (36), e00938-17.

  12. Payne RB, Ghosh U, May HD, Marshall CW, Sowers KR. Mesocosm Studies on the Efficacy of Bioamended Activated Carbon for Treating PCB-Impacted Sediment. 2017. Environmental Science and Technology. doi: 10.1021/acs.est.7b01935

  13. Wang H, Marshall CW, Cheng M, Xu H, Li H, Yang XR, Zheng T. Changes in land use driven urbanization impact nitrogen cycling and the microbial community composition in soils. 2017. Scientific Reports. 7, 44049.

  14. Yang XR, Weng BS, Li H, Marshall CW, Li H, Chen YS, Yu S, Zhu GB, Zhu YG. An overlooked nitrogen loss linked to anaerobic ammonium oxidation in estuarine sediments in China. Journal of Soils and Sediments. 2017. doi:10.1007/s11368-017-1728-y.

  15. Zhou GW, Yang XR, Marshall CW, Li H, Zheng BX, Yan Y, Su JQ, Zhu YG. Biochar addition increases the rates of dissimilatory iron reduction and methanogenesis in ferrihydrite enrichments. Frontiers in Microbiology. 2017. 8: 589.

  16. Zhou GW, Yang XR, Li H, Marshall CW, Zheng BX, Yan Y, Su JQ, Zhu YG. Electron Shuttles Enhance Anaerobic Ammonium Oxidation Coupled to Iron (III) Reduction. Environmental Science and Technology. 2016. 50 (17), 9298-9307.

  17. Ross DE, CW Marshall, HD May, RS Norman. Comparative Genomic Analysis of Sulfurospirillum cavolei MES Reconstructed from the Metagenome of an Electrosynthetic Microbiome. PLoS One. 2016. 11(3). e0151214.

  18. Burgsdorf I, BM Slaby, KM Handley, M Haber, J Blom, CW Marshall, JA Gilbert, U Hentschel, L Steindler. Lifestyle Evolution in Cyanobacterial Symbionts of Sponges. mBio. 2015. 6 (3): e00391-15.

  19. Ross DE, CW Marshall, HD May, RS Norman. Draft Genome Sequence of Sulfurospirillum sp. Strain MES, Reconstructed from the Metagenome of a Microbial Electrosynthesis System. Genome Announcements. 2015. 3(1): e01336-14.

  20. LaBelle EV, CW Marshall, JA Gilbert, HD May. Influence of Acidic pH on Hydrogen and Acetate Production by an Electrosynthetic Microbiome. PLoS One. 2014. 9(10): e109935.

  21. Marshall CW, DR Ross, EB Fichot, RS Norman, HD May. Long-term Operation of Microbial Electrosynthesis Systems Improves Acetate Production by Autotrophic Microbiomes. Environmental Science and Technology. 2013. 47(11): 6023-6029.

  22. Marshall CW, EV LaBelle, HD May. Production of Fuels and Chemicals from Waste by Microbiomes. Current Opinions in Biotechnology. 2013. 24(3): 391-397.

  23. Marshall CW, DR Ross, EB Fichot, RS Norman, HD May. Electrosynthesis of Commodity Chemicals by an Autotrophic Microbial Community. Applied and Environmental Microbiology. 2012. 78(23): 8412-8420.

  24. Marshall, Christopher W and Harold D May. Electrochemical evidence of direct electrode reduction by a thermophilic Gram-positive bacterium, Thermincola ferriacetica. Energy & Environmental Science. 2009, 2: 699-705.

  25. Mathis, BJ, CW Marshall, CE Milliken, RS Makkar, SE Creager, HD May. Electricity generation by thermophilic microorganisms from marine sediment. Applied Microbiology and Biotechnology. 2008. 78(1): 147-155.


  1. CW Marshall, EV LaBelle, HD May. Microbial Electrosynthetic Cells. 2014. Patent Publication Number WO 2014043690 A1.

  2. KR Sowers, HD May, CL Chun, CW Marshall. Thermophilic Methanogenic Consortium for Conversion of Cellulosic Biomass to Bioenergy. 2011. Patent Publication Number US20110306089.

Recent & Upcoming Talks


(Past and Present)

Experimental Microbiology. Marquette University. Undergraduate. Fall 2019. BIO 4802.

Comprehensive Microbiology. University of Pittsburgh. Graduate level. Spring 2018 & Spring 2019. 2184 MSMI 1100.

Pseudomonas and Friends Journal Club. University of Pittsburgh.

Applied and Environmental Microbiology. Duquesne University. Graduate and Undergraduate level. Spring 2017. ENVI 497597 BIO 432W/532.

The Microbiome and Health. Undergraduate level. Univeristy of Chicago. Spring 2015. BIOS 15123.

General Microbiology. Graduate and Undergraduate level. College of Charleston. 2009 – 2011. Bio 310 / 320.

Environmental Microbiology. Graduate level. MUSC. Spring 2010 - 2012. MBIM-772.