Question:
What is the name (either correct name or synonym) of the causal agent of citrus canker disease ?
What is the name (either correct name or synonym) of the causal agent of citrus canker disease ?
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The other three options borrow species names that actually belong to Bacillus, not Xanthomonas.
Updated On: Jul 4, 2026
- Xanthomonas cereus
- Xanthomonas licheniformis
- Xanthomonas megaterium
- Xanthomonas axonopodis
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The Correct Option is D
Solution and Explanation
Step 1: Citrus canker is a bacterial disease of citrus plants caused by a species of the genus Xanthomonas, which produces raised, corky lesions on leaves, stems and fruit.
Step 2: The recognised causal organism is Xanthomonas axonopodis pv. citri, also referred to under the older synonym Xanthomonas citri.
Step 3: Xanthomonas cereus, Xanthomonas licheniformis and Xanthomonas megaterium are not real recognised species names, cereus, licheniformis and megaterium are actually species epithets belonging to the genus Bacillus, not Xanthomonas.
Step 4: So the correct answer is Xanthomonas axonopodis.
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