Class 8 Biology Microorganisms: Friend and Foe Citrus Canker

Diseases in Plants: Citrus Canker

  • Pathogen
    • Bacterium, Xanthomonas axonopodis


  • Pathogen’s entry
    • Entry through stomata/ wounds on leaves
    • Infection can spread through rain/ wind or contaminated equipments
    • Affects citrus plants


  • Symptoms
    • Premature fall of leaves
    • Lesions on leaves, stems & fruits
    • Premature drop of fruits


  • Treatment
    • No specific treatment procedure so far
    • Citrus farming becomes difficult & expensive


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