Among PGPR, fluorescent pseudomonads have been reported to be effective against a broad spectrum of plant pathogens, including fungi, bacteria and viruses in many plant species, e.g. bean, carnation, cucumber, radish, tobacco, tomato and the model plant Arabidopsis thaliana ( van Loon et al., 1998). Similarly, the sporulating Gram-positive bacteria like Bacillus spp. have also been used successfully for plant disease control ( Kloepper et al., 2004).