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Published Articles from USDA ARS National Program 108: Food Safety
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Title: First report of Pantoea ananatis (Syn. Erwinia uredovora) associated with peanut rust in Georgia
Authors: Arias De Ares RS, Power I, Culbreath AK, Sobolev V, Lamb MC
Journal: Plant Health Prog
Accepted date: 2013 Jul 25
Interpretive summary: Analyzing DNA of the fungal pathogen that causes peanut rust (Puccinia arachidis), we determined the presence of a bacterium (Pantoea ananatis) that was described in the past “feeding on spores” of rust fungi. This is the first report of the bacterium being present in peanut rust samples collected from Georgia fields. This is relevant for various reasons. First, because Pantoea ananatis has been described as a potential biocontrol agent of rust diseases. Second, because the bacterium has also been reported as pathogen in maize. And third, because if using urediniospores of Puccinia arachidis to test resistance to rust in peanut cultivars, the potential presence of bacteria needs to be taken into account, as it could compromise the viability of the spores being used.
Publication date: 2013 Jul