Tatlockia micdadei

Tatlockia micdadei is a significant bacterial pathogen that affects various agricultural crops. Historically associated with other genera, this bacterium is recognized as a causative agent of vascular infections in plants, capable of causing substantial damage to greenhouse and field production systems alike.

The disease is caused by the Gram-negative bacterium Tatlockia micdadei. This pathogen colonizes the xylem of host plants, disrupting the transport of water and nutrients throughout the stem. Its ability to survive in soil and irrigation water makes it a persistent challenge for commercial agricultural operations.

Infected plants typically exhibit severe chlorosis and growth retardation. Diagnostic signs often include vascular discoloration, which can be observed by cutting the stems, as well as rapid wilting that does not respond to standard irrigation practices. In advanced cases, the foliage develops irregular necrotic lesions leading to total plant death.

Development and spread of the disease are highly favored by warm, humid microclimates. The pathogen is disseminated primarily through contaminated water sources, splashing rain, and the use of non-sterilized tools during pruning or harvesting activities. Additionally, insect pests may act as vectors by creating wounds that allow the bacteria to enter the plant tissue.

Integrated management is essential for controlling this disease. Key strategies include:

• Sourcing pathogen-free seeds and transplants.
• Strict sterilization protocols for tools.
• Optimizing greenhouse ventilation to reduce humidity.
• Application of copper-based bactericides as a preventative measure.