Bacteria are single celled prokaryotic (no membrane around nucleus) microorganisms that are either free-living in soil or water or diseases of plants or animals.  As a disease of plants and animals bacteria are a risk for Western Australian primary producers as they impact upon market access and agricultural production. 

Western Australia is free from some of the world's major bacterial diseases. Biosecurity measures on your property are vital in preventing the spread of bacterial diseases.

The Department of Agriculture and Food, Western Australia provides:

  • biosecurity/quarantine measures at the State border to prevent the entry of bacterial diseases.
  • where relevant post border biosecurity measures.
  • advice on widespread bacterial diseases present in the State.

For advice on bacterial diseases please search our website, Western Australian Organism List or contact our Pest and Disease Information Service (PaDIS).

For diagnostic services, please contact our AGWEST Plant Laboratories or Animal Health Laboratories.


  • Dickeya dianthicola is a serious bacterium that can cause tuber soft rot and blackleg in potatoes, and can also affect some ornamental varieties, chicory and artichoke.

  • Candidatus Liberibacter solanacearum (CLso) is is an exotic pest to Australia.

  • Straw or brown colour spots surrounded by a yellow water-soaked halo than may resemble septoria

    There are two types of bacterial disease which infect oat foliage; halo blight (Pseudomonas syringae pv. coronafaciens) and stripe blight (Pseudomonas syringae pv.

  • Leaf spots that turn yellowish and later brown and papery

    Bacterial Blight (Pseudomonas syringae pv.pisi) is rarely seen in Western Australia.

  • American foulbrood is a disease of honeybee larvae caused by the bacterium Paenibacillus larvae.

  • European foulbrood disease, a serious disease of honey bees in eastern Australia, has not been detected in Western Australia.

  • Information is provided here to assist management of diseases and viruses that occur in broadacre crops grown in Western Australia - cereals (wheat, barley, oats and triticale), pulses (field pea,

  • Soft rot can cause heavy losses in stored potatoes if not properly managed, creating a perception of poor quality in export seed potato markets.

  • DDLS - Plant pathology (formerly part of AGWEST Plant Laboratories) is a service area under the DPIRD Diagnostic Laboratory Services (DDLS) - an amalgamation of DPIRD plant and animal laboratory an

  • Broccoli, cabbage, Chinese cabbage, cauliflower and Brussels sprouts are members of the brassica family.

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