Botryosphaeria disrupta

Botryosphaeria disrupta is a species of fungus in the family Botryosphaeriaceae. It is a plant pathogen that primarily affects fruit trees, causing significant damage to crops worldwide.

Taxonomy

The species was first described in 1928 by mycologist John N. Couch. It belongs to the genus Botryosphaeria, which comprises over 18 species of fungi. The name Botryosphaeria is derived from the Greek words botrys meaning "bunch of grapes" and sphaeria meaning "sphere", referring to the grape-like clusters of spores produced by species in this genus.

Description

Botryosphaeria disrupta is characterized by its dark, spherical fruiting bodies known as ascocarps. These structures contain ascospores, which are the primary means of dispersal for the fungus. The ascospores are released into the air and can travel long distances, infecting new hosts.

Pathology

Botryosphaeria disrupta is a significant pathogen of fruit trees, particularly apple trees and pear trees. It causes a disease known as Botryosphaeria canker, which is characterized by the formation of cankers or lesions on the branches and trunks of infected trees. If left untreated, the disease can lead to significant yield loss and even death of the tree.

Management

Control of Botryosphaeria disrupta involves a combination of cultural practices and chemical treatments. Pruning of infected branches and regular inspection of trees for signs of disease can help to prevent the spread of the fungus. Fungicides can also be used to control the disease, although resistance to these chemicals has been reported in some populations of the fungus.

See also

• List of apple diseases
• List of pear diseases