studies on plant pathogens in planta48. Since in vitro results do not
always represent the antimicrobial activities of Xenorhabdus in
planta situation, the potency determined in in vitro assays may be
overestimated or underestimated compared with in planta situation,
The active where pathgen infection is a well-regulated phenomenon that
requires cross talk between host and pathogen through signals probably
located on the external surfaces of cells49. The disturbance of cell
membranes of pathogens by antimicrobial compounds apparently
could lead to interference with such signals, which could eventually
result in the failure of infection and development of symptoms on
plants.