الفهرس 
Study the effect of electric and magnetic pulses on the activity of Erwinia Amylovora bacteria
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Abstract
The gram-negative bacteria Erwinia amylovora is the fireblight disease
causal agent and threatens international apple and pear fruit production.
The current work aimed to study the resonance frequency of extremely
low frequency electric pulses (ELF-EPs), and magnetic pulses (ELF-MPs) on the
growth ability, antibiotic sensitivity, and the changes in the cell membrane activity
of E. amylovora.
Treatment of E. amylovora at 1.4 Hz for 2 hours with (ELF-EPs) increases
the sensitivity of antibiotics to the pathogen. The dielectric relaxation showed a
change in the distribution of surface charge of the bacterium, also highly
significant in the morphological view through the transmission electron
microscope TEM. The DNA analysis proves that the change only occurs in the
bacterial cell wall. It was concluded that E.amylovora’s treatment by electric
pulsed fields for the 1.4 Hz frequency for 2 hours affects the cell structure-activity