Phoma tracheiphila

Phoma tracheiphila is a fungal pathogen that primarily affects citrus trees. It is the causative agent of a disease known as Mal Secco, which is Italian for "dry disease". This disease is a significant problem in the Mediterranean region, where it can cause severe damage to citrus crops.

Characteristics

Phoma tracheiphila is a ascomycete fungus. It produces small, black, spherical fruiting bodies known as pycnidia. These pycnidia contain spores that are spread by wind and rain. The spores can infect citrus trees through wounds or natural openings.

Disease Cycle

The disease cycle of Phoma tracheiphila begins when its spores infect a citrus tree. The fungus then grows inside the tree's xylem, causing the tree to wilt and eventually die. The fungus can survive in dead wood for several years, producing spores that can infect other trees.

Control

Control of Phoma tracheiphila is difficult due to its ability to survive in dead wood. However, some methods of control include the removal and destruction of infected trees, the use of fungicides, and the planting of resistant varieties of citrus.

Economic Impact

The economic impact of Phoma tracheiphila is significant, particularly in the Mediterranean region. The fungus can cause severe damage to citrus crops, leading to reduced yields and economic losses for farmers.

See Also

• Citrus
• Fungus
• Pathogen
• Ascomycota
• Fungicide

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