Question:
Wheat rust is caused by:
Wheat rust is caused by:
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Wheat rust diseases (stem, leaf, stripe rust) are all caused by Puccinia species.
Updated On: Jun 20, 2026
- Albugo
- Puccinia
- Penicillium
- Plasmodium
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The Correct Option is B
Solution and Explanation
Step 1: Understanding plant diseases.
Plant diseases are commonly caused by pathogens such as fungi, bacteria, viruses, and protozoa. Wheat rust is a well-known fungal disease affecting wheat crops and reducing agricultural yield significantly.
Step 2: Identifying the causal organism.
Wheat rust is specifically caused by fungi belonging to the genus Puccinia. These fungi are obligate parasites and infect cereal crops like wheat, forming rust-colored pustules on leaves and stems.
Step 3: Nature of Puccinia.
Puccinia species are basidiomycete fungi that complete their life cycle on wheat plants. They are responsible for different types of rust diseases such as stem rust, leaf rust, and stripe rust.
Step 4: Eliminating incorrect options.
Albugo causes white rust in crucifers, Penicillium is involved in antibiotic production and food spoilage, and Plasmodium causes malaria in humans. Hence, these are unrelated to wheat rust.
Step 5: Final verification.
Since wheat rust is a fungal disease of wheat caused by Puccinia species, it correctly matches option (2).
Final Answer: \[ \boxed{\text{Puccinia}} \]
Plant diseases are commonly caused by pathogens such as fungi, bacteria, viruses, and protozoa. Wheat rust is a well-known fungal disease affecting wheat crops and reducing agricultural yield significantly.
Step 2: Identifying the causal organism.
Wheat rust is specifically caused by fungi belonging to the genus Puccinia. These fungi are obligate parasites and infect cereal crops like wheat, forming rust-colored pustules on leaves and stems.
Step 3: Nature of Puccinia.
Puccinia species are basidiomycete fungi that complete their life cycle on wheat plants. They are responsible for different types of rust diseases such as stem rust, leaf rust, and stripe rust.
Step 4: Eliminating incorrect options.
Albugo causes white rust in crucifers, Penicillium is involved in antibiotic production and food spoilage, and Plasmodium causes malaria in humans. Hence, these are unrelated to wheat rust.
Step 5: Final verification.
Since wheat rust is a fungal disease of wheat caused by Puccinia species, it correctly matches option (2).
Final Answer: \[ \boxed{\text{Puccinia}} \]
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