Three Mysterious Fungi: What Secrets Do They Hold for Biotechnology?

In the realm of basidiomycete fungi, three new strains are catching attention: Daedaleopsis tricolor, Pycnoporellus fulgens and Trichaptum abietinum. Researchers isolated them from wild fruiting bodies and grew them on solid nutrient media. Identification relied on morphological traits and Sanger DNA sequencing, with the data deposited in GenBank.

Cultures were placed both in the centre and at the edge of Petri dishes to better observe colony and hyphal development. All three strains showed an optimal growth temperature of 27 °C. D. tricolor reached a radial growth of 5.26 mm per day on synthetic medium, while T. abietinum hit 7.5 mm per day. P. fulgens preferred a synthetic medium enriched with lignin, growing 2.98 mm per day.

Biomass weight was measured after a few days: D. tricolor produced 133.25 mg in 9 days, P. fulgens 86.73 mg in 16 days, and T. abietinum 227.33 mg in just 6 days. These results show that the new strains can generate substantial biomass quickly.

Because of these traits, the fungi could become sources of biologically active substances for food, pharmaceutical and cosmetic industries, opening fresh pathways in sustainable biotechnology.

Basidiomycetes are renowned for producing secondary metabolites with antibacterial, anticancer, and antioxidant activities. In the three studied strains, the ITS (Internal Transcribed Spacer) gene sequence was compared with NCBI databases, confirming species identity and revealing genetic variants potentially responsible for unique compound synthesis.

The synthetic medium used contained glucose, ammonium nitrate, potassium phosphate, and a secondary carbon source; the addition of lignin for P. fulgens stimulated ligninolytic enzymes such as laccase and peroxidase, facilitating the breakdown of lignin’s complex aromatic structure. This process not only supplies energy to the fungus but also generates degradation products that can serve as precursors for bioactive molecules.

Radial growth curves were modeled with the Gompertz equation, showing a lag phase of about 12 hours followed by exponential growth up to the biomass peak. The higher growth rate of T. abietinum on synthetic medium suggests a more efficient conversion of nutrients into fungal tissue, likely due to an optimized sugar transport system and regulation of genes involved in cell‑wall polysaccharide synthesis.

Biomass analysis revealed a composition rich in β‑glucans, compounds known for immunomodulatory properties. Moreover, organic solvent extraction identified small aromatic molecules, including phenols and terpenes, which could be used as natural preservatives or active ingredients in cosmetics.

Finally, registering the strains in GenBank ensures genetic traceability and facilitates future bioprospecting studies, allowing comparison with other fungi known for antibiotic or industrial enzyme production. The combination of rapid growth, lignin‑degrading ability, and bioactive metabolite production makes these three basidiomycetes ideal candidates for sustainable biotechnological processes such as bioplastic, biofuel, or functional food ingredient production.