Fig. 5. In vitro antimicrobial assay of the effects of tomato leaf
extracts on bacteria. Total protein extracts prepared from 300 mg
of tomato leaves were used to investigate growth inhibition in the
bacteria Erwinia, E. coli and Salmonella. After incubation for 18
h, the bacterial growth in the presence of protein extracts from
transgenic tomatoes (T1) was recorded by the OD600 and
normalized to the OD600 of bacteria grown in the presence of
protein extracts from wild-type (WT) tomatoes. The data are the
means and the standard deviations of three replicates.