Bulletin #2448, Dickeya dianthicola and Pectobacterium parmentieri (Pectobacterium wasabiae) on Potatoes (PDF) By Steven B. Johnson, Extension Crops Specialist, University of Maine Cooperative Extension For information about UMaine Extension programs and resources, visit extension.umaine.edu.Find more of our publications and books at extension.umaine.edu/publications/. Dickeya dianthicola and Pectobacterium parmentieri are two of several species of bacteria that