Figure 2.

RNA gel-blot analyses of expression of the CaPO2 and CaBPR1 genes in pepper plants. The membranes were hybridized with ³²P-dCTP labeled CaPO2 and CaBPR1 probes. Equal loading of total RNA (20 μg per lane) was verified by visualizing rRNA on a gel stained with ethidium bromide. A, Organ-specific expression of the CaPO2 and CaBPR1 genes in pepper plants. B, Expression of CaPO2 and CaBPR1 in pepper leaves at various time points after inoculation with the virulent strain Ds1 (compatible) and the avirulent strain Bv5-4a (incompatible) of Xcv at the six-leaf stage. H, Healthy leaves; Mock, leaves treated with 10 mm MgCl₂.