Bacterial plant diseases are estimated to cause annual economic losses of about 220 billion USD globally . Among numerous bacterial pathogens, E. amylovora (the etiological factor of fire bright disease of apple trees) , Agrobacterium tumefaciens , X. fascidiosa and P. syringae are responsible for the most important, from the economic point of view, diseases. Standard methods for treating bacterial diseases consist of antibiotics and pesticides; the problem is that both accumulate in the environment and can be potentially harmful to living creatures . Moreover, spreading the antibiotics into the environment would undoubtedly result in the wildfire of antibiotic resistance . Therefore, there is a pressing need to find biocompatible and harmless bactericides, such as bacteriophages.