Abstract

The response of pepper leaves and flowers to infection with Xanthomonas campestris pv. vesicatoria was compared. Bacterial growth was drastically restricted in flower but not leaf tissue. Chitinase and β-1,3-glucanase were co-ordinately induced in infected leaf and flower tissue but considerably earlier in flower tissue. Maximum β-1,3-glucanase activity in infected leaf and flower tissue of the same pepper cultivar was similar but maximum chitinase activity was significantly higher in blossom than leaf.

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