First report of soft rot disease of peach caused by Pantoea ananatis in China.
In September 2014, the authors received peach fruit sealed in a shipping box, collected from a peach garden in Shanghai, China. Fruit were kept at room temperature for 7 days after harvest prior unsealing the shipping box. Upon opening, 25% of the fruit initially appeared water-soaked with brown pinpoint spots on the surface of the exocarp. Spots then enlarged into lesions with dark brown edges and coalesced after causing necrosis and collapse of the mesocarp tissues. Decaying fruit oozed liquefied mesocarp tissues when pressed. Based on morphological, physiological, molecular (sequencing of 16S rDNA, atpD, gyrB and infB genes) and pathogenicity tests, the causal agent was identified as P. ananatis. This is thought to be the first report of P. ananatis causing soft rot disease on peach, which may influence the quality of harvested peach and result in economic loss during peach sales and the production of relevant peach products.