Laboratory of Applied
Microbial Ecology

Biomonitoring and Bioprospecting
Our research focuses on extremophilic bacteria, particularly psychrotolerants from Arctic and Antarctic regions, metallotolerants, and strains resistant to toxic compounds (including antibiotics). Using structural and functional genomics, we investigate their metabolic pathways and resistance mechanisms, with an emphasis on whole-genome sequencing and mobile genetic elements (MGEs). We apply advanced computational analyses to explore the ecological and evolutionary roles of MGEs and their biogeography.

We assess the taxonomic and functional diversity of microbial communities in pristine and anthropogenically-shaped environments, aiming to understand adaptation and seasonal microbiome dynamics. One of the key research areas is the ecological and molecular characterization of antibiotic resistance, supported by our custom-developed bioinformatic tools and curated databases.

We also conduct biomonitoring studies focused on the detection and analysis of pathogens, antibiotic resistance genes, and virulence factors across diverse environments. These efforts support applications in both human and veterinary medicine, enhancing our understanding of the environmental reservoirs and transmission routes of clinically relevant traits.

In parallel, we engage in bioprospecting of extreme environments for microbial strains, novel enzymes, and metabolites with high biotechnological potential, including their applications in regenerative agriculture and environmental biotechnologies.

Latest Papers

The occurrence and removal of antibiotic residues and antibiotic resistance genes in the largest European constructed wetland at Orhei (Moldova)
Mikolaj Wolacewicz, Przemyslaw Decewicz, Maria Eugenia Valdes, Oana-Simina Iaconi, Mihail Todiras, Alina Ferdohleb, Sara Rodriguez-Mozaz, Carles M. Borrego, Lukasz Dziewit
Environmental Pollution, 402: 128381 (2026)
Gelidimonas denitrificans gen. nov., sp. nov., and Gelidimonas diazotrophica sp. nov. psychrophilic bacteria involved in the nitrogen cycle in tundra soils of South Spitsbergen
Jakub Grzesiak, Julia Brzykcy, Peter Young, Elvira Krakowska, Robert Stasiuk, Kamil Krakowski, Przemyslaw Decewicz, Alina Kiedrynska, Renata Matlakowska, Dariusz Bartosik
Systematic and Applied Microbiology, 49: 126730 (2026)
Bacterial biomolecules drive extracellular DNA adsorption onto ferrihydrite: interfacial interactions and spectroscopic insights
Mateusz Skalny, Jakub Czeremuga, Maciej Roman, Tomasz Wrobel, Lukasz Dziewit, Tomasz Bajda
Langmuir, 42, 16131-16144 (2026)
Plant–pollinator interactions and floral and nectar traits shape the diversity of the nectar mycobiome
Kamil Kislo, Marcin Mazurkiewicz, Bartlomiej Starzynski, Marcin Zych, Mikolaj Wolacewicz, Andrzej Bajguz, Magdalena Chmur, Katarzyna Roguz
Scientific Reports, 16: 13253 (2026)

Latest News

Microbial stories at the Science Picnic

On 13 June 2026, our group took part in the Science Picnic of Polish Radio and the Copernicus Science Centre in Warsaw, co-organizing the stand of the Faculty of Biology. This year’s event gathered many visitors interested in exploring science through hands-on activities, demonstrations, and direct conversations with researchers.

At our stand, the miniature model of a constructed wetland helped us explain how microorganisms support natural water purification and ecosystem functioning. We also presented agar plates with colorful bacterial cultures, including strains with unusual features that helped us tell stories about microbial diversity and adaptation. One of the highlights was Serratia marcescens, a true queen of science outreach. These examples opened the way to conversations about bacteria living in lakes and other freshwater ecosystems, their role in nutrient cycling, and their importance as indicators of environmental change.

The event was a great opportunity to share topics related to our research projects, including the role of microorganisms in urban water reservoirs, the spread of antibiotic resistance in the environment, and the use of microbial communities in nature-based solutions. We also showed how bacteria and fungi can be useful in agriculture, environmental management, and industry, especially food production. Visitors could test their knowledge in a quiz about microorganisms involved in producing different foods and learn which microbial properties make these processes possible.

Microbial stories at the Science Picnic