Lahmiaceae

The pathogen possesses a complex biological structure, consisting of ascostromata where spores are formed, designed for the dissemination of the infection. These fungi are adapted to survive in various plant debris.

The biology of the pathogen is closely linked to the availability of organic substrate. During development, the fungus penetrates the epidermal layers of the plant, utilizing enzymatic systems to degrade cell walls.

Agronomists are particularly concerned about the ability of these fungi to survive unfavorable conditions in the form of mycelium or dormant structures within plant tissues.

To identify the pathogen in laboratory settings, mycological analysis is required, which allows for the differentiation of Lahmiaceae from other associated fungal species.

External manifestations of the disease are often expressed by the appearance of specific dark spots on the surface of leaves, stems, or fruits. Affected areas may eventually become covered with a coating.

One of the characteristic signs is the presence of small fruiting bodies of the fungus, which rupture the plant epidermis, forming distinct bumps or microscopic craters.

In the early stages, the disease may develop covertly, complicating diagnosis. However, as the pathogen progresses, tissue necrotization occurs, leading to yellowing and premature leaf shedding.

When stems are affected, general growth inhibition and a decrease in turgor are observed. In some cases, deformation of vegetative organs may occur due to disrupted metabolic processes.

Visual inspection allows for the detection of infection clusters by the uneven coloration of the leaf blade, which eventually acquires a grayish or brownish hue.

The development of Lahmiaceae fungi is favored by high levels of air humidity, which is necessary for spore germination and active mycelium growth.

The optimal temperature range for the spread of the infection is usually in the moderate spectrum. Sharp temperature fluctuations and prolonged rains create an ideal microclimate for pathogen reproduction.

The presence of weakened plants in the agroecosystem significantly increases the likelihood of a disease outbreak. Lack of balanced nutrition also lowers the natural immunity of the crop.

Poor ventilation of crops, caused by dense planting, prevents rapid drying of moisture on leaves, which triggers the development of fungal spores.

The infection background accumulates in plant debris left in the field after harvesting, which serves as the primary source of contamination for future plantings.

The harmfulness of fungi in this family lies in the reduction of overall agricultural productivity due to the loss of photosynthetic area.

Infection of generative organs leads to a decrease in harvest quality, weight reduction of fruits, and loss of commercial appearance of produce, which is critical for marketability.

Heavy spread of the disease during early vegetative stages can cause premature death of individual plants, reducing the density of the stand.

Infected tissues become entry points for secondary infections, including bacterial rots, which multiplies the scale of crop losses.

In the long term, the presence of Lahmiaceae in the field requires additional expenditures for phytosanitary measures and soil treatment.

The primary method of prevention is the adherence to crop rotation, which limits the pathogen's life cycle by depriving it of its usual host.

Thorough cleanup and destruction of plant debris in the autumn allow for a radical reduction in the infection load in the soil and on the field surface.

The use of resistant cultivars and hybrids is the most economically effective way to contain the disease in modern intensive farming conditions.

Application of preventive fungicides is recommended when weather conditions favor the development of fungal infection.

• Regular greenhouse ventilation
• Timely plant fertilization
• Removal of weeds — disease reservoirs