1.*Recognition and "attack" of a plant cell by a bacterium*

Injured plant cells begin to synthesize specific compounds (amino acids, sugars and organic acids). In dicotyledons these are phenolic derivatives syringone and acetosyringone [13] while in monocotyledons it is ethyl ferrulate [14]. These compounds cause a positive chemotoxic reaction that leads to interaction of plant cells and bacteria. Binding of a bacterium to the plant cell represents the first step in the mechanism of genetic transformation.
