Puccinia dolosa

Puccinia dolosa is a fungal pathogen belonging to the Pucciniaceae family, known for causing rust disease in various plants. As an obligate biotroph, it depends entirely on living host tissues for its nutrition, development, and the successful completion of its complex reproductive cycle.

The fungus primarily targets cereal crops and wild grasses, representing a significant threat in agricultural landscapes. Its life cycle involves the formation of several spore types, allowing the pathogen to adapt to different environmental conditions and persist in various stages during the cropping season.

Symptomatology of the infection includes the appearance of small, raised pustules (uredinia) on the leaf blades and stems. These pustules rupture the plant epidermis, releasing masses of spores that are easily wind-dispersed. Severe infections lead to leaf yellowing, desiccation, and significant loss of photosynthetic capacity.

Favorable conditions for the development and spread of Puccinia dolosa are high relative humidity, frequent leaf wetness (such as dew or rain), and moderate temperatures. Under such conditions, the fungal spores germinate rapidly, leading to the rapid proliferation of the disease throughout the field.

The economic impact of this disease is substantial, often leading to reduced grain yield, lower kernel weight, and poor quality of the harvested crop. Effective management requires constant monitoring, the application of chemical fungicides during high-risk periods, and long-term agricultural strategies.

• Application of preventive and curative fungicide treatments.
• Selection and planting of resistant crop varieties.
• Management of crop residues to reduce inoculum pressure.
• Implementation of diverse crop rotations to disrupt the pathogen's life cycle.