Fungi

Fungi are eukaryotic (membrane bound nucleus) organisms that develop from reproductive bodies called spores. They can cause a number of diseases in animals and plants. As a disease of plants and animals, fungi are a risk for Western Australian primary producers as they impact upon market access and agricultural production.

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

The Department of Primary Industries and Regional Development provides:

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

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

For diagnostic services, please contact our Diagnostic Laboratory Services.

Articles

  • Indefinite areas of yellow then straw-coloured lesions on the leaf,stem, and tendrils

    Septoria leaf blotch Septoria pisi is a minor disease that is widespread in Western Australia.

  • Fluffy mouse-grey spore masses on the leaf underside

    Low levels of downy mildew Perenospora viciae are sometimes noticed in field pea crops late in winter, but crops usually grow away from it during the longer warmer spring days.

  • Dark target-like lesions

    A dark-spot forming fungal disease that is mainly a problem in wet warm spring weather.

  • Large elongated mid-brown blotches surrounded by a margin of chlorotic tissue

    A fungal foliar disease caused by Pyrenophora wirreganensis that primarily infects a range of grasses and can be found on paddock and road verges in spring.

  • Roots of affected plants are blackened and brittle and break easily, and are black to the core not just on outer surface.

    A fungal root disease that can cause severe yield losses of wheat and barley especially in medium- to high-rainfall areas.

     

  • Pustules become black in colour towards the end of the season.

    Stem rust is a fungal foliar disease of wheat that can cause up to 90% yield loss and also reduces grain quality in susceptible varieties.

  • Dead flowering spikes above the rest of the crop

    Sclerotinia stem rot is a fungal disease that causes stem and plant death during flowering.

  • White spots appear on oldest leaves

    A white-spot forming fungal disease that is mainly a problem in wet weather.

  • Phomopsis stem lesion before maturity

    Phomopsis stem and pod blight (Diaporthe toxica) occasionally causes yield losses, however the major impact of infection is the production of a mycotoxin (phomopsin) by the fungus as it gr

  • Group I herbicide damage can also cause root nodules

    Clubroot is caused by a soil-borne fungus that only affects plants in the Cruciferae family including canola,mustard, wild radish, wild mustard, wild turnip and vegetable brassicas.