Fungal diversity, evolution, and classification

Area of Science:

• Mycology
• Ecology
• Evolutionary Biology

Background:

• Fungi, including mushrooms, molds, and yeasts, are ubiquitous in all Earth's ecosystems.
• Over 155,000 fungal species are described, with millions more estimated to exist.
• Aquatic habitats reveal fungal groups at the Fungi-protist boundary.

Purpose of the Study:

• To advance the resolution of major fungal phylogenetic branches.
• To integrate described fungal species with newly discovered 'dark fungi'.
• To construct a comprehensive fungal tree of life.

Main Methods:

• Phylogenetic analysis to resolve deep fungal nodes.
• Taxonomic description of new fungal species.
• Metagenomic analyses to detect unidentifiable fungi in various habitats.

Main Results:

• Significant progress in resolving fungal phylogeny, though some deep nodes remain challenging.
• Approximately 3,000 new fungal species are described annually.
• Metagenomic studies reveal thousands of unidentifiable 'dark fungi'.

Conclusions:

• Connecting phylogenetic branches with described species is crucial for a complete fungal tree.
• Integrating 'dark fungi' data is essential for understanding fungal diversity.
• Continued taxonomic and molecular ecological research will illuminate fungal life.