What causes rust (white blister) disease in cruciferous plants?

-✅Explanation: Albugo candida, a fungus-like organism, causes white rust, also known as white blister disease, in cruciferous plants like cabbage, broccoli, and mustard. It forms white blister-like pustules on leaves and stems.
–

📌Other Options Explanations:
-Puccinia spp.: Causes rust diseases in various crops.
-Peranospora spp.: Causes downy mildew diseases in plants.
-Phytophthora: Causes various plant diseases, including root rot and blights.

🛑 Additional Information::::
-White rust disease is caused by a fungus called Albugo candida or Cystopus candidus.
-Albugo Candida belongs to the class Phycomycetes (group oomycetes) of Fungi.
-This disease mainly affects the members of the Cruciferae family-like Mustard, Cress, Rape, Radish, Cabbage, Cauliflower, turnip, etc

• Symptoms of the disease are:
-It affects the aerial plant's parts like leaves and stems, roots remain unaffected
-It causes two types of infection
-Local infection: isolated spots or pustules appear on the stem and upper leaf surface which later combine or merge to form patches.
-Systemic infection: this infects the young stem and inflorescence of plants, which results in various types of deformities like Hypertrophy, due to which distortion and swelling are seen.
-Oospores produced by the fungus are the main cause of this disease
-Infection is generally favoured by a cool (13-18o C) environment.