Inonotus andersonii

Inonotus andersonii imported from iNaturalist photo 150464203 on 15 March 2024

Inonotus andersonii is a species of fungus belonging to the family Hymenochaetaceae. It is a type of wood decay fungus that primarily affects oak trees, although it can be found on other hardwood species as well. This fungus is known for causing a disease known as white rot, which decomposes the lignin and cellulose in the wood, leading to significant structural damage and potentially the death of the host tree.

Description

Inonotus andersonii forms fruiting bodies that are typically shelf-like or bracket-shaped and can vary in color from yellowish to brown. These structures are perennial, growing larger with each passing year, and have a rough, woody texture. The underside of the fruiting body, where spore production occurs, is usually covered with tiny pores.

The spores of Inonotus andersonii are released into the air and, when they land on a suitable host, can infect the tree through wounds or broken branches. The fungus then grows inside the wood, breaking down the structural components of the wood and causing decay. Over time, this can lead to the weakening of branches or the trunk, posing a risk of falling limbs or tree failure, especially during storms or high winds.

Ecology

Inonotus andersonii is found in various parts of the world, particularly in temperate regions where oak and other hardwoods are prevalent. It plays a significant role in forest ecosystems by decomposing dead or dying wood, thus recycling nutrients back into the soil. However, its impact on living trees can be detrimental, leading to economic losses in timber production and posing hazards in urban and suburban areas where large trees are in close proximity to people and structures.

Management

Managing Inonotus andersonii involves regular inspection of trees for signs of infection, such as the presence of fruiting bodies or signs of white rot. Infected limbs or trees should be removed to prevent the spread of the fungus to nearby healthy trees. In urban areas, it is important to conduct proper tree care practices, such as avoiding injury to trees and ensuring they are well-watered and fertilized, to reduce stress and make them less susceptible to infection.

See also

• Fungal plant pathogens and diseases
• Forest pathology
• Wood decay fungus

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