Pestalotia theae

Pestalotia theae is a species of fungus in the family Amphisphaeriaceae. It is a plant pathogen that primarily affects the tea plant (Camellia sinensis), causing a disease known as grey blight.

Description

The Pestalotia theae fungus is characterized by its dark, septate hyphae and conidia that are typically three-septate and bear appendages at both ends. The conidia are produced on simple or branched conidiophores.

Distribution and habitat

Pestalotia theae is found in many tea-growing regions around the world, including India, China, and Sri Lanka. It thrives in warm, humid conditions, which are common in these areas.

Pathogenicity

Pestalotia theae causes grey blight disease in tea plants. The disease is characterized by the appearance of greyish-brown spots on the leaves, which can coalesce to form large, irregular patches. If left untreated, the disease can cause significant yield losses.

Management

Management of Pestalotia theae involves a combination of cultural practices and chemical control. Cultural practices include regular pruning to improve air circulation and reduce humidity, and removal of infected plant material to prevent the spread of the fungus. Chemical control typically involves the application of fungicides.

See also

• List of tea diseases
• Pestalotiopsis