Figure 4. Quantitative RT-PCR analysis of JA-inducible PR2 expression upon infection with Salmonella and Pseudomonas syringae.

Transcript amounts of PR2 (pathogenesis related2), similarly to PDF1.2, are induced by MeJA treatment. Transcript levels accumulate also after contact with Salmonella, pointing to a central role of the JA pathway in response to this bacterium. Moreover, the induction follows the kinetics of induction caused by the plant specialized pathogen P. syringae. Q-RT-PCR was performed as described above.