Asian soy bean rust

Pustules Figure 3 , called uredinia, form in these lesions, mostly on the lower leaf surface, and they can produce many urediniospores. Soybean rust was found in Mexico in the early spring of and in an isolated field near Brownsville, TX.. The pathogen is well adapted for long-distance dispersal, because spores can be readily carried long distances by the wind to new, rust-free regions. Lack of sexual reproduction should limit variability of the rust fungus, but nevertheless there is substantial variability in P. Plant Protection and Quarantine. It is thought that these responses represent susceptible, moderate, or highly resistant reactions, respectively.

The disease has caused serious yield loss of soybeans. Fungi portal. It causes lesions on the leaves of soybean plants and eventually kills the plants. In Asia, soybean rust is able to overwinter between the 20th and 30th parallels.