Cytospora cincta

Cytospora cincta is a species of fungus in the family Valsa ceae. It is a plant pathogen that primarily affects stone fruit trees, including peaches, nectarines, plums, and cherry trees.

Description

Cytospora cincta is characterized by its production of conidia, which are asexual spores that are produced by the fungus in response to specific environmental conditions. These conidia are typically hyaline, or transparent, and are produced in structures known as pycnidia.

Life Cycle

The life cycle of Cytospora cincta begins with the germination of a conidium, which develops into a mycelium. This mycelium then invades the host plant, causing canker and other symptoms. The fungus reproduces by producing new conidia, which are spread to other plants by wind or water.

Pathogenicity

Cytospora cincta is a significant pathogen of stone fruit trees. It causes a disease known as Cytospora canker, which is characterized by the formation of cankers on the branches and trunk of the tree. These cankers can girdle branches, leading to wilting and death of the branch. In severe cases, the disease can kill the entire tree.

Management

Management of Cytospora cincta 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 tree which can provide entry points for the fungus. Chemical control typically involves the application of fungicides.

See Also

• Canker
• Stone fruit
• Fungicide