Supporting this being a consequence of reduced differentiation efficiency, analysis of the expression of PAD1 revealed that both the single and double peptidase deletion expressed less PAD1 at the peak of the infection on day 5 than the parental line although the single and double peptidase deletion lines were not significantly different from each other with respect to this marker (p = 0.933) (Fig. 6b). This evidence concerns the gene LAP3 and infection.