Among the polyketide synthetases genes (PKS, Supplementary Material 3), Bcin01g00060 and Bcin01g00090 (required for botcinic acid biosynthesis, see above) displayed the highest expression values during the infection of A. thaliana and S. lycopersicum, as shown in Figure 4A. In contrast, seven PKS genes (shown in the middle-bottom left of Figure 4A) exhibited low expression values in most culture conditions, with particularly low mRNA levels during the infection of tomato plants. This evidence concerns the gene ARAF and infection.