The induced resistance to P. viticola is correlated to a strong activation of SA- and JA/ET-dependent defense pathways by IFP48 and to a lesser extent by TAG before P. viticola inoculation, as emphasized by an upregulation of PR1 and PR2 (markers of SA), ERF1 and PR3c genes (markers of JA/ET), and stilbene phytoalexin accumulation in the absence of pathogen infection. This evidence concerns the gene TMEM37 and infection.