Mae Chow
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Potato blight can also be known as Late blight. This fungal organism (Phytophthora Infestans), is a destructive disease that affects the stems, leaves and tubers of potato and tomato plants. It renders the fruit and tubers unpalatable. Potatoes and tomatoes are both members of the same genus (Solanum), which makes them equally vulnerable although tomatoes grown under glass are much less likely to be affected 😁 Potatoes however, are very susceptible to the disease, which can spread rapidly over long distances 😉 The only safe treatment is to burn the infected foliage and not compost it 😎 [1]
The Blight potatoes is caused by a fungus that goes by the Latin name Phytophthora infestans. The symptoms of Phytophthora infestans are obvious: it is small and brownish-black. Spots appear on the leaves, often surrounded by a pale halo, while the underside of the leaves may take on a white, downy appearance in wet weather – these are the hyphae by which the fungus colonises. In a matter days, the blight can lead to complete destruction of leaves. If the infection is severe, tubers can grow underground and cause brown rot. It can lead to secondary infections by other bacterias and fungi that cause a very unpleasant stench as the prized potatoes become mushy. [2]
Based on a brand new article by eap.mcgill.caUnderstanding the disease process and the biology of your organism is the first step in achieving an eco-friendly approach to protect potato crops from the effects of late blight. One way to think about the blight fungus is as an microscopic organism with all of its components. Its leaves, stem, and mycelium are all part of the mycelium. Roots which grow The leaves, stems, and tubers of potatoes as well. The structure known as sporangiophore bears the fruits of the fungus sporangia. These can be in the thousands. Every sporangia is composed of 8 zoospores. They are similar to seeds except they can swim. Julia Ramirez (Yan’an, China) modified this article on May 3, 2021 [3]