The fungus with more than 28,000 sexes is Schizophyllum commune.
Understanding Schizophyllum commune and its "Sexes"
The term "sexes" in the context of fungi like Schizophyllum commune isn't exactly the same as male and female in animals. It refers to mating types. These fungi use a complex system of genes that determine compatibility when two individuals meet to reproduce sexually.
Why So Many Sexes?
Schizophyllum commune's extraordinary number of mating types (more than 28,000!) serves a crucial evolutionary purpose:
- Minimizing Inbreeding: This vast number of mating types almost guarantees that two individuals will be genetically different enough to successfully reproduce. As stated in the provided reference, this adaptation "minimises the risk of siblings mating".
- Maximizing Genetic Diversity: By promoting outbreeding (mating with unrelated individuals), Schizophyllum commune ensures that each generation has a high level of genetic variation. The reference mentions this leads to "nearly 100% outbreeding with new genetic stock."
- Enhanced Adaptability: Greater genetic diversity equips the fungus to better adapt to changing environments and resist diseases.
Key Takeaways
| Feature | Description |
|---|---|
| Fungus Name | Schizophyllum commune |
| Number of "Sexes" | More than 28,000 mating types |
| Evolutionary Benefit | Minimizes inbreeding, maximizes genetic diversity, enhances adaptability |
In essence, Schizophyllum commune's incredibly diverse mating system is a highly successful strategy for ensuring its long-term survival and adaptability.
