CLINICAL MEDICINE

MEDICINE

INFECTIOUS DISEASES

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What organism causes blight in tomatoes and potatoes?
A
Bacteria
B
Virus
C
Fungus
D
Protoctistan
E
Parasite
Explanation: 

Detailed explanation-1: -Phytophthora infestans belongs to a group of oomycetes within the Kingdom of “protists”, although they are still commonly referred to as “fungi”. They are also called “water molds” because they thrive and produce spores under humid, moist environment and cause infection only when free water is present on plant surface.

Detailed explanation-2: -Potato blight (also known as late blight) is a disease caused by a fungus-like (Oomycete) organism (Phytophthora infestans) that spreads rapidly through the foliage and tubers of potatoes in warm, wet weather, causing collapse and decay.

Detailed explanation-3: -Tomato late blight is caused by the oomycete pathogen Phytophthora infestans (P. infestans). The pathogen is best known for causing the devastating Irish potato famine of the 1840s, which killed over a million people, and caused another million to leave the country.

Detailed explanation-4: -late blight, also called potato blight, disease of potato and tomato plants that is caused by the water mold Phytophthora infestans. The disease occurs in humid regions with temperatures ranging between 4 and 29 °C (40 and 80 °F).

Detailed explanation-5: -Abstract. Phytophthora infestans is a destructive plant pathogen best known for causing the disease that triggered the Irish potato famine and remains the most costly potato pathogen to manage worldwide. Identification of P.

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