Heterorepetobasidium

Heterobasidion is a genus of basidiomycete fungi in the family Bondarzewiaceae. The genus contains several species that are significant pathogens of conifer trees. The most well-known species, Heterobasidion annosum, is a common root rot pathogen in the Northern Hemisphere.

Taxonomy

The genus Heterobasidion was first described by the Finnish mycologist Petri Karsten in 1888. The name is derived from the Greek words heteros (different) and basidion (small pedestal), referring to the different types of basidia produced by these fungi.

Description

Species in the genus Heterobasidion are characterized by their basidiocarps (fruit bodies), which are typically perennial and grow on the wood of conifer trees. The basidiocarps are usually brown or black, and have a woody texture. The spores are white or cream-colored, and are produced in large quantities.

Pathogenicity

Several species of Heterobasidion are significant pathogens of conifer trees, causing a disease known as root rot. The most well-known of these is Heterobasidion annosum, which is a common pathogen in the Northern Hemisphere. This fungus infects trees through wounds in the roots, and can cause significant damage to timber crops.

Control

Control of Heterobasidion species is difficult due to their ability to survive in the soil for long periods of time. However, various methods have been developed to manage the disease, including the use of fungicides and biological control agents.

See also

• List of Heterobasidion species
• Root rot