Mollisina

Mollisina is a genus of fungi belonging to the order Helotiales, known to cause diseases in various plants. Acting primarily as a necrotrophic or saprotrophic parasite, this fungus targets susceptible plant tissues, utilizing them as a nutrient source and creating visible lesions that hinder plant development.

The pathogen affects a wide range of woody species, shrubs, and sometimes herbaceous plants. It is particularly noted for its ability to persist on dead organic matter, such as fallen leaves, twigs, and bark, effectively turning the surrounding environment into a reservoir for further infection during the growing season.

The primary clinical signs of Mollisina infection are the appearance of small, disc-shaped fruiting bodies known as apothecia. On the plant surface, this manifest as dark spots, tissue softening, and necrotic patches. As the infection progresses, affected leaves often wither prematurely, and shoots may exhibit signs of dieback.

Development and dissemination of Mollisina are highly dependent on environmental conditions, particularly high humidity and moderate temperatures. The fungus releases spores that are easily dispersed by rain splash or wind currents. Densely planted areas with poor aeration provide an ideal microclimate for the rapid spread of the pathogen.

The economic impact of this disease manifests through reduced plant vigor, stunted growth, and loss of commercial value for ornamental or fruit crops. Effective control measures rely on sanitation and environmental management:

• Conducting regular pruning to remove infected branches and twigs.
• Sanitation protocols involving the removal and disposal of leaf litter.
• Promoting proper airflow and sunlight penetration through thinning.
• Strategic application of fungicides if weather conditions favor heavy outbreaks.