The spatial separation between the biological control agent (T34) and the pathogen and the reduction of Botrytis disease showed the involvement of the induction of plant resistance, even though an increase in JA levels could not be detected by T34 in the evaluated days of this study. Indeed, T34 applied to the roots has been shown to prime for induced resistance independently of SA (Segarra et al., 2009; Trillas and Segarra, 2009). However, SA increases have only been found whenhigh concentrations (laboratory levels, notfieldlevels) of T34 are applied (107 CFU mL1)(Segarra et al., 2007a).