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Banana phytoplasma diseases

PLANT PEST Banana phytoplasma diseases cause plants to wilt and die.Richard Davis, Department of Agriculture,Fisheries and Forestry, Musarama Banana phytoplasmaExotic to AustraliaFeatures: Bacterial diseases causing wilting and severelosses in banana crops overseasWhere they’re from: Asia, Papua…
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Bees (Apis spp.) (exotic species)

PLANT PEST Exotic bee species look similar to everyday honey bees, but can carry pests and diseases, or take over our honey bee hives. Left is Asian honey bee; centre is everyday honey bee; right is the giant honey bee.Ken Walker, Museum Victoria, PaDIL. Bees (Apis spp.) (exotic species)Exotic to…
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Dutch elm disease

PLANT PEST Dutch elm disease causes leaf wilting in elm trees, which arecommonly planted in Australian cities and gardens.  Minnesota Department of Natural Resources, Bugwood.org Dutch elm diseaseExotic to AustraliaFeatures: One of the most devastating plant diseases in the world that…
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Fire blight

PLANT PEST Trees with fire blight look burnt. Bruce Watt, University of Maine, Bugwood.org Fire blightExotic to AustraliaFeatures: A fast spreading bacterial infection of rosaceous hosts, particularly apple and pear, affecting all parts of the treeWhere it’s from: Asia, Africa, North, Central and…
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Myrtle (eucalyptus) rust (exotic strains)

PLANT PEST Myrtle rust symptoms on leaves.D.T. Junghans Embrapa, PaDIL. Myrtle (eucalyptus) rust (exotic strains)Exotic to AustraliaFeatures: A fungal infection that causes brown to grey lesions often surrounded by yellow sporesWhere it's from: Central America and Caribbean, United States, South…
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Karnal bunt

PLANT PEST Grains of wheat infected with Karnal buntL.A. Castlebury USDA-ARS SBML, PaDIL. Karnal buntExotic to AustraliaFeatures: A fungal disease that causes broken hollow (bunted) grain, powdery masses of dark spores, and a strong fishy odourWhere it's from: India originally, but now also…
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Plum pox virus

PLANT PEST Fruit infected with plum pox virus is often marked with spots or rings.EPPO, Bugwood.org. Plum pox virus (sharka)Exotic to AustraliaFeatures: Plum pox virus is the most devastating viral disease of stone fruit in the world, deforming fruitWhere it’s from: Europe, Africa, Asia, North…
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Pine pitch canker

PLANT PEST Pine pitch canker has infected the middle tree in this image,causing oozing and saturation with resin.Miloň Dvořák, EPPO. Pine pitch cankerExotic to AustraliaFeatures: Fungal disease of all pine species and Douglas fircausing ‘bleeding’…
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Spongy moth

PLANT PEST Spongy moth infesting a tree trunk. Note the dark yellow egg masses.Karla Salp, Washington State Department of Agriculture, Bugwood.org. Spongy mothExotic to AustraliaFeatures: Medium sized moths that infest and destroy many kinds of plants; large hairy caterpillars up to 7 cm…
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Texas root rot

PLANT PEST Texas root rot causes patches of dead and dying plants, here in a cotton field.Chris Anderson, NSW DPI. Texas root rotExotic to AustraliaFeatures: Soil borne fungal disease that causes sudden wilt and deathin many plant species.Where it’s from: Southwest USA, Mexico, Venezuela, and…
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