The Evolutionary Origins of Mushrooms and Mycelium
Over the weekend, I had the chance to explore a local forest with my partner. As we wandered along the track, we came upon a variety of mushrooms and fungi sprouting from the forest floor. It was a magical moment that sparked my curiosity about these fascinating organisms. When I think of the terrestrial world, I usually picture plants as the foundational pillars of life on land. However, long before the first leaves reached for the sun, a vast, hidden network was already laying the groundwork: fungi . What fascinates me about fungi is how they exist in a category entirely their own—neither plant nor animal, yet holding the world together. Molecular evidence suggests they diverged from a common eukaryotic ancestor roughly 1.5 billion years ago (much like the deep evolutionary history I explored in my post on LUCA ). Surprisingly, they are closer evolutionary cousins to animals than plants. In their earliest days, these organisms likely lived in water and possessed flagella . But a...