Fig. 9.

Quantitative real-time RT–PCR analysis of relative gene expression of CaChitIV, CaPIK1, CaPR1, and CaDEF1 in pepper plants infected with virulent Ds1 (compatible) or avirulent Bv5-4a (incompatible) strains of Xanthomonas campestris pv. vesicatoria (Xcv). CaPR1, pathogenesis-related protein; CaDEF1, defensin. Expression values were normalized by the expression levels of Capsicum annuum CaACTIN. Data are the means ±standard deviations from three, independent experiments. Letters above the bars indicate statistically significant differences between treatments, according to the LSD test (P<0.05). (This figure is available in colour at JXB online.)