Related Experiment Video
Updated: May 16, 2026

05:34
Sexual Crosses with the Mucoromycete Phycomyces blakesleeanus
Published on: June 6, 2025
Sexual selection in fungi
1Laboratory of Genetics, Wageningen University, Wageningen, The Netherlands. bart.nieuwenhuis@wur.nl
Journal of Evolutionary Biology
|November 21, 2012
Summary
Sexual selection drives fungal evolution, analogous to animal mating behaviors. Fungi exhibit distinct sex roles and mating types, offering unique models for studying sexual selection dynamics.
Area of Science:
- Evolutionary Biology
- Mycology
- Sexual Selection
Background:
- Sexual selection is crucial for animal and plant evolution but understudied in fungi.
- Fungi exhibit hermaphroditic mating with distinct female (large gametes) and male (small gametes) roles.
- Mating types in fungi regulate compatibility and can be subject to sexual selection.
Purpose of the Study:
- To establish the significance of sexual selection in fungal evolution.
- To propose that fungal mating systems provide models for studying sexual selection.
- To explain fungal characteristics through the lens of sexual selection.
Main Methods:
- Comparative analysis of fungal mating systems.
- Application of sexual selection theory to fungal reproductive strategies.
- Review of existing literature on fungal reproduction and mating types.
Main Results:
- Fungi display 'male-male' competition and 'female choice' analogous to animals.
- Mating-type loci genes are crucial for sexual selection in fungi.
- Sexual selection can explain fungal traits like pheromone redundancy and spore diversity.
Conclusions:
- Sexual selection plays a significant role in the evolution of fungi.
- Fungi serve as excellent model organisms for experimental studies on sexual selection.
- Understanding fungal mating systems enhances our knowledge of evolutionary processes.
Related Concept Videos
Overview of Fungi
Fungi are a diverse group of eukaryotes more closely related to animals than other eukaryotes. Fungal cell walls comprise chitin, a polysaccharide that provides structural strength, and glucans, which contribute to flexibility and integrity. Other polysaccharides, such as mannans and galactosans, may supplement or replace chitin in some fungi. These adaptations, along with their preference for acidic environments and tolerance for high osmotic pressure, enable fungi to thrive in various...
Frequency-dependent Selection
When the fitness of a trait is influenced by how common it is (i.e., its frequency) relative to different traits within a population, this is referred to as frequency-dependent selection. Frequency-dependent selection may occur between species or within a single species. This type of selection can either be positive—with more common phenotypes having higher fitness—or negative, with rarer phenotypes conferring increased fitness.
Fungal Phylum Ascomycota
Phylum Ascomycota, a major division within the subkingdom Dikarya, comprises a diverse range of fungal species, including both unicellular yeasts and filamentous molds such as Aspergillus and Penicillium. These fungi thrive in a variety of habitats, from aquatic ecosystems to terrestrial environments, playing crucial ecological and economic roles.Morphology and ReproductionThe defining characteristic of Ascomycetes, commonly referred to as sac fungi, is the ascus—a sac-like structure that...
Yeast Signaling
Yeasts are single-celled organisms, but unlike bacteria, they are eukaryotes (cells with a nucleus). Cell signaling in yeast is similar to signaling in other eukaryotic cells. A ligand, such as a protein or a small molecule released from a yeast cell, attaches to a receptor on the cell surface. The binding stimulates second-messenger kinases to activate or inactivate transcription factors that further regulate gene expression. Many of the yeast intracellular signaling cascades have similar...
Mate Choice
Mate choice—the decision about whom to mate with—is a type of natural selection, since animals must reproduce to pass down their genes. Mate choice is also called intersexual selection because the behavior occurs between the sexes.
Fungal Group Zygomycota
Zygomycota, previously classified as a distinct fungal group, are primarily terrestrial, saprophytic molds that play a crucial role as decomposers. Recent phylogenetic studies have revealed that these fungi are now divided into two major clades — Mucoromycota, which includes many symbiotic species, and Zoopagomycota, which primarily consists of parasitic and pathogenic fungi. These groups exhibit distinct ecological roles and reproductive strategies while sharing key structural and...

