Recently, bacteria belonging to the genus Erwinia, which causes soft rot in various plants, were grouped into the genus Pectobacterium and Dickeya and the main virulence determinants of these genous are the pectolytic enzymes secreted through the type II secretion system. There are two species P. carotovorum and D. chrysanthemi that are particularly damaging to potato crops worldwide. The former is a major pathogen in temperate regions, while the latter is the most damaging in warmer climates. P. carotovorum has been divided into five sub species based on biochemical, physiological and pathogenicity characteristics from which two subspecies carotovorum and atrosepticum are able to cause symptoms on potato both during the vegetative cycle of the crop and in stored tubers. Also a new Pectobacterium subspecies, P. carotovorum subsp.
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Citation: Azadmanesh S, Marefat A, Azadmanesh K (2013) Detection of Pectobacteria Causal Agents of Potato Soft Rot in North Western Provinces of Iran. J Plant Pathol Microb 4:154.
Last date updated on July, 2014