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Typical urediniospores of Phakopsora pachyrhizi on a soybean trichome.
Dario Narváez, Jim Marois, and David Wright
North Florida Research and Education Center, 155 Research Road, Quincy, FL 32351
Email: dnarvaez@ufl.edu
Host: Glycine max
Disease name: Soybean rust
Pathogen name: Phakopsora pachyrhizi
The image shows urediniospores of Phakopsora pachyrhizi on a soybean trichome and a surrounding infecting hypha expanding throughout the trichome. Soybean rust, caused by Phakopsora pachyrhizi Sydow, is a wind-borne fungal disease recently introduced into most of the soybean production areas of the U.S. The survival and spread of this biotrophic pathogen depends on the continuous production of urediniospores.
APS publication number: IW000104
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