Oregon State University Plant Clinic

Select Agents (APHIS)

These information sheets are in pdf format and will require the free download of Adobe Acrobat

Fungal diseases

Philippine downy mildew of corn
(Peronosclerospora phillippinensis = syn. P. sacchari)

Brown stripe downy mildew of corn factsheet / diagnostic guide
(Sclerophthora rayssiae var. zeae)

Potato wart
(Synchytrium endobioticum)

Bacterial diseases

Southern Wilt, brown rot of potato
(Ralstonia solanacearum, biovar 2, races 3)

Citrus variegated chlorosis
(Xylella fastidiosa)

Citrus greening
(Liberibacter americanus = Liberobacter americanus)
(Liberibacter africanus = Liberobacter africanus)

Xanthomonas oryzae

Bacterial leaf streak of rice
(Xanthomonas oryzae pv. oryzicola)

Bacterial blight of rice
(Xanthomonas oryzae pv. oryzae)

Diseases of concern

Pathogen of Forest trees and shrubs
(Phytophthora kernoviae)

Soybean rust
(Phakopsora pachyrhizi and P. meibomiae)

Plum pox virus

Red leaf blotch of soybean
(Phoma glycinicola, formerly Pyrenochaeta glycines )

Gumming disease of ryegrass
(Rathayibacter toxicus)

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