Xanthomonas citri subsp. citri

Citrus canker

Photo by Florida Division of Plant Industry Archive, Florida Department of Agriculture and Consumer Services, Bugwood.org

  • Found in over 30 countries in Asia, some Pacific and Indian Ocean islands, South America and USA (Florida)
  • Infects all young, actively growing leaves, twigs, stems, trunks, thorns and fruit of susceptible hosts
  • Lesions first appear as pin-point spots that become small, slightly raised pustules or blister-like eruptions
  • Lesions can be surrounded by a yellow halo and occur initially on the lower leaf surface
  • Symptoms exacerbated by leaf miner injury
  • The bacteria can be spread by wind blown rain, insects, workers and equipment, or via infected plant material
  • Has been eradicated from Australia on several occasions

High priority pest of: Citrus

Scientific name: Xanthomonas citri subsp. citri
EPPRD Category: 2
Life Form: Bacteria

Pest Documents

FS: fact sheet

CP: contingency plan

DP: diagnostic protocol