Fungi mycelium network

Fungal mycelium network: the underground system connecting plants, recycling nutrients, and inspiring sustainable innovations.

About this subject

Mycelium is the vegetative part of fungi, composed of a network of filamentous hyphae that extend through soil or substrate. This structure acts as a communication and nutrient exchange system among plants, popularly known as the "Wood Wide Web." A single gram of soil can contain kilometers of hyphae.

The mycelial network allows mycorrhizal fungi to form symbiosis with approximately 90% of terrestrial plants. Hyphae transport water, phosphorus, and nitrogen to roots in exchange for carbohydrates. Recent research shows that plants can warn each other about pests through this fungal connection.

Beyond its ecological role, mycelium has technological applications: biocompostable construction materials, packaging, vegan leather, and even medicines (such as penicillin, derived from fungi). Companies like Ecovative Design produce mycelium-based packaging to replace polystyrene.

A curious fact: the largest living organism on Earth is an Armillaria ostoyae fungus in Oregon, whose mycelium spans about 9.6 km² and is estimated to be between 2,400 and 8,650 years old.

Frequently Asked Questions

How does mycelium connect to plants?

Mycelium of mycorrhizal fungi envelops or penetrates plant roots, forming a symbiotic association. Hyphae absorb soil nutrients and exchange them for sugars produced by the plant.

What are the commercial applications of mycelium?

Mycelium is used in biodegradable packaging, construction materials like bricks and insulation panels, vegan leather for sustainable fashion, and in producing enzymes and medicines, including antibiotics.

What is the largest known mycelium organism?

The largest is an Armillaria ostoyae fungus in Malheur National Forest, Oregon, USA. Its mycelium covers 9.6 km² and is estimated to be between 2,400 and 8,650 years old.