The genus Erwinia is classified in the family of Enterobactericeae, typically facultative anaerobic, gram negative rods possessing peritrichious flagella. Most members of this genus are naturally plant-pathogenic and plant-associated bacteria. Erwinia sp. are responsible for such basic types of plant disease as necrosis, blight, soft rot and wilt in a number of crop plants. For example, fire blight caused by E. amylovora is the most destructive disease in pear and apple orchards in many parts of world [1]. E. chrysanthemi pv. zeae and E. corotovora subsp. carotovora cause a highly destructive disease in maize and soft rot of potatoes as well as a wide range of fruits and vegetables [2].