Cytospora personata

Cytospora personata is a species of fungus that belongs to the Valsa family. It is a plant pathogen that primarily affects peach trees, causing a disease known as Cytospora canker or Leucostoma canker. This disease is a significant problem in peach orchards worldwide, leading to substantial economic losses.

Taxonomy

The fungus was first described in 1875 by mycologist Jean-Pierre Harmand. It was initially classified as Valsa personata, but was later reclassified as Cytospora personata based on its morphological characteristics and genetic analysis.

Description

Cytospora personata is a ascomycete fungus. It produces small, black, flask-shaped fruiting bodies known as perithecia. The perithecia contain ascospores, which are the primary means of dispersal for the fungus.

Pathology

Cytospora personata infects peach trees through wounds or natural openings. The fungus colonizes the xylem tissue, causing the formation of cankers. Symptoms of infection include wilting, yellowing and premature drop of leaves, dieback of branches, and eventually death of the tree.

Management

Management of Cytospora personata involves a combination of cultural practices and chemical control. Cultural practices include proper pruning to remove infected branches and improve air circulation, and avoiding injury to the trees. Chemical control involves the use of fungicides.

See also

• List of peach and nectarine diseases
• Plant pathology