First report of Pectobacterium parmentieri causing stem rot disease of potato in Russia.
From 2011 to 2014, over 100 pectinolytic enterobacterial isolates were obtained from green potato plants with blackleg symptoms found in 4 districts (Odintsovo, Dmitrov, Kashira and Ruza) of Moscow, Russia, in severely infected commercial fields planted with the cultivars Nevskii, Gala and Lady Clear. Disease incidence ranged from 1 to 10% of infected plants in the field from July to August. The causal pathogen was identified as Pectobacterium parmentieri based on physiological, biochemical, molecular and pathogenicity analyses. This is thought to be the first report of bacterial stem rot/blackleg of potato caused by P. parmentieri in the Russian Federation.