What does Alternaria solani cause?

What does Alternaria solani cause?

Alternaria solani is a fungal pathogen that produces a disease in tomato and potato plants called early blight. The pathogen produces distinctive “bullseye” patterned leaf spots and can also cause stem lesions and fruit rot on tomato and tuber blight on potato.

What kind of organism is Alternaria solani?

Alternaria solani is a plant pathogen and the causative agent of early blight in solanum species. It produces numerous polyketides such as solanapyrone A (50) and alternaric acid (51), and is thus an ideal target species for speculative PKS gene-fishing expeditions (Figure 4).

How do you control Alternaria solani?


  1. Prune or stake plants to improve air circulation and reduce fungal problems.
  2. Make sure to disinfect your pruning shears (one part bleach to 4 parts water) after each cut.
  3. Keep the soil under plants clean and free of garden debris.
  4. Drip irrigation and soaker hoses can be used to help keep the foliage dry.

Is Alternaria solani soil borne?

andigena and S. endobioticum are soil-borne pathogens and the other species are airborne. A minority of eight (24%) of the described species is airborne. Of these, five species inflict great actual (Alternaria solani and Phytophthora infestans) or potential (P.

How does Alternaria spread?

Wind currents can carry Alternaria cucumerina a long distance. Alternaria cucumerina can also spread within the field by splashing water. Wet, rainy weather favors diseases.

What does Alternaria do to potatoes?

Alternaria, also known as early blight, is a mainly soil-borne fungal pathogen that affects potato crops. It is a global disease that has been present in GB crops for many years. Warm and wet periods favour the disease, and if not controlled, it can cause dramatic leaf loss, leading to yield reductions of up to 30%.

Can tomato blight be stopped?

If your tomato plants are suffering from tomato blight there is no cure, even farmers who have access to strong pesticides are helpless once the disease has hit.

How does Alternaria solani reproduce?

Alternaria reproduces only by conidia which are produced at the tips of conidiophores. The endophytic mycelium grows out as erect and aerial hyphae through the stomata or ruptured epidermis of the infected host tissue.

Which pesticide is best for Alternaria?

The strobilurin fungicides are the most effective at controlling Alternaria blotch.

Can you eat potatoes with blight?

Potatoes can become infected both before or after harvest, with the disease appearing as brown, dry and sunken areas. “The unaffected parts probably are safe to eat. “Since there is no documented harm from eating blight-infected fruit, it may be tempting to simply cut off the infected portion.

How is Alternaria transmitted?