Ascomycetes > Identify, Control & Disease Prevention Tips

Ascomycetes

Ascomycetes are fungi that belong to the Ascomycota phylum. Some known members are truffles, yeast (both brewers’ and bakers’), and most of the lichens’ fungal half belong to this phylum. Most fungal plant pathogens are also part of this group. Since it comprises a wide range of species, this phylum has pathogens and several important species used in food and drink production, medical components, and antibiotics.
Ascomycetes are central in land-based ecosystems, as they’re decomposers and responsible for the renewal of organic matter. The pathogenic species can affect humans, animals, and plants, and in plants they cause apple scabs and blights, rice blasts, black knots and powdery mildews, among others. They’re usually either terrestrial or parasitic and are often spread by insects.

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Signs of damage

Damage is host-specific and fungus specific:

Leaf damage. Deformities will appear on leaves, as well as spots and curling, and young plants will lose leaves.
Stem cankers.
Mold. Blue-green, brown, and red molds affect many hosts, especially crops and orchards.
Fruit damage. Fruit and seeds will be infected, especially ripe fruit, and some will spoil the fruit’s taste, making them sour.
Rotting. Roots, stems, and fruit will begin to rot.
Dutch elm disease. Leaves on the upper branch start to wither and yellow out of season, followed by dieback of branches and eventually root death by lack of nutrients from the leaves.

How to prevent

Adequate sanitization practices are the first step to preventing fungal disease and most pathogens. This should be paired with optimal conditions for each plant to ensure resistance but also to reduce the likelihood of damage from any kind of disease.
Cut off any damaged tissue and remove it from the area, to ensure a clean and healthy environment. If possible, quarantine any plant that shows symptoms to reduce the spreading of the disease.

Heal

Fungicides are the best strategy against any fungus, but try to identify the pathogen first to use specialized treatment for each disease. Besides this, different plants often require different approaches.

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