Question
Download Solution PDFWhich of the following pair of plant disease–microorganisms is correct?
I. Citrus canker – Virus
II. Rust of wheat – Fungi
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFThe correct answer is Only II.
Key Points
- Rust of wheat is a disease that damages the wheat grains due to infection caused by fungi. Hence II pair is correct.
- The rust of wheat is caused by the fungus Puccinia
- Puccinia is a heteroecious fungus that requires two different hosts for the completion of its life cycle.
- Puccinia is also known as Rust Fungi.
- Citrus canker is a bacterial disease that affects citrus plants and fruits. Hence I pair is Incorrect.
- Citrus canker is a bacterial disease affecting Citrus species caused by the Xanthomonas axonopodis. It affects Citrus species like lime and orange.
Additional Information
- Some Bacterial diseases of Plants are:
- Crown Gall - Agrobacterium tunefaciens
- Common blight of beans - Xanthomonas campestris
- Soft rot - Erwinia carotovora
- Some fungal diseases of plants are:
- Late blight of potato - Phytoplithora Infestans
- Black rust of wheat - Puccinia graminis
- Loose smut of wheat - Ustilago nuda
Last updated on Jun 17, 2025
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