Re-defining the culturing method for Pseudogymnoascus destructans incorporating viability detection

Area of Science:

• Mycology
• Wildlife Pathology
• Bat Conservation

Background:

• Pseudogymnoascus destructans (Pd) causes white-nose syndrome, leading to mass bat mortality in North America.
• Current detection methods focus on nucleic acids, failing to assess fungal viability.
• Lack of standardized cultivation hinders understanding of Pd pathogenicity and ecology.

Purpose of the Study:

• To establish standardized in vitro cultivation methods for Pseudogymnoascus destructans.
• To identify optimal media for Pd growth and conidia development.
• To improve the accuracy of fungal risk assessment for bat populations.

Main Methods:

• Testing a pure culture of Pd on various media types at different concentrations.
• Evaluating media for supporting Pd growth and minimizing competing fungal isolates.
• Developing a standard protocol for environmental swab sampling.

Main Results:

• Potato dextrose agar and yeast peptone dextrose agar were identified as optimal media for Pd cultivation.
• Selected media supported timely fungal growth and conidia development.
• The standardized protocol minimizes growth of competing fungal species.

Conclusions:

• Standardized cultivation of Pd is essential for understanding its ecology and pathogenicity.
• Optimized media and protocols enhance diagnostic accuracy for white-nose syndrome.
• Improved methods aid regional management and research on Pd transmission and bat impacts.