Antarctic Soil Fungi Show Powerful Cold-Active Enzymes With Industrial and Bioremediation Potential

Antarctic Fungi Reveal High-Value Enzymes for Industry and Environmental Cleanup

A new study examining soil samples from Deception Island and King George Island in Maritime Antarctica reveals that cold-adapted fungi thriving in extreme environments possess exceptional enzymatic capabilities with strong biotechnological potential. The research analyzed 53 fungal isolates collected during the Brazilian Antarctic Program 2022/2023 and uncovered an impressive spectrum of extracellular enzyme activities.

The isolates were screened for five major enzyme groups: amylase, protease, lipase, laccase, and lignin peroxidase. Remarkably, 98% of all isolates showed at least one enzymatic activity, highlighting the metabolic flexibility required for survival in nutrient-limited, icy environments.

Among the standout performers, Oudemansiella sp. PPH5 exhibited the highest amylase activity (405.88 U dL⁻¹), marking the first recorded isolation of this genus on the Antarctic continent. Antarctomyces sp. PWB6 produced the most potent lipase activity (11.76 U mL⁻¹), while Cladosporium sp. RWB8 demonstrated the strongest ligninolytic potential, showing top values for both laccase and lignin peroxidase.

The study also evaluated the fungi’s ability to decolorize Remazol Brilliant Blue R (RBBR), a dye used to detect ligninolytic activity. Several isolates—particularly Cladosporium sp. RWB7 and RWB8—showed meaningful dye removal in both solid and liquid media, reinforcing their potential role in bioremediation of pollutants under cold conditions.

Molecular analysis revealed that most isolates belonged to the phylum Ascomycota, including genera such as Cladosporium, Pseudogymnoascus, and Antarctomyces, while one isolate represented Basidiomycota (Oudemansiella).

Overall, the findings position Antarctic fungi as a rich, underexplored source of cold-active enzymes suitable for industrial applications—from detergents and food processing to environmental cleanup. With most activities detected under unoptimized conditions, the authors highlight that further enhancement could unlock even greater biotechnological value.

Reference

Robayo, M., Rosa, L. & Passarini, M. Isolation, dye discoloration, and enzymatic activity of fungi present in the soil of deception and King George Island, Maritime Antarctica. Arch Microbiol 208, 23 (2026). https://doi.org/10.1007/s00203-025-04587-7