Appressoria

Appressoria are specialized cellular structures found in most fungi. They are composed of densely packed mycelial cells and are used by some fungi to attach to and penetrate a host surface. This process, known as appressorial penetration, helps to get the fungus in close contact with its host so it can obtain nutrients. Appressoria can also be used by fungi to mobilize toxins, aiding in their colonization of new environments. Appressoria are a crucial component of the fungal lifecycle and have important applications in biotechnology, such as the engineering of more efficient mycorrhizal fungi to promote plant growth.