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Agrobacterium tumefaciens

Agrobacterium tumefaciens

Description

Agrobacterium tumefaciens is a type of bacteria that can cause tumors or galls on plants. This bacterium is often associated with crops like tomatoes, peppers, and grapevines, but it can also infect trees. When A. tumefaciens infects a tree, it can cause the formation of a gall or tumor on the tree\'s trunk or branches. The galls can vary in size and shape, and they may be smooth or rough, depending on the type of tree and the severity of the infection. While the galls may not be harmful to the tree initially, over time, they can weaken the tree\'s structure and make it more susceptible to other diseases and pests. In severe cases, the galls can even cause the tree to die.

Symptom

Tumor formed on the root, stem or branch of the plant, depending on original wound site. The size and shape of the tumor depends on the host plant.

Tree Species: Alder

Part of a plant- attacked: Roots

Pest significance: Less harmful

Pest Category: Bacteria and viruses

Invasive Species: No

Present in EU: Yes