Siderophore-mediated Antibiosis of rhizobacterial fluorescent Pseudomonads against Rice fungal pathogens

Fifteen rhizobacterial fluorescent pseudomonas isolates obtained from rice in the region of Andhr a Pradesh, India In all 10 strains of Pseudomonas fluorescens were selected based on preliminary screening of al l these isolates for antifungal activity against rice fungal pathogens ( P.oryzae and R.solani )., inhibited the growth of rice fungal pathogens i n Fe deficient King's B medium that varied from (3 to 58 % inhibition). Among these Pf 003 strain completel y inhibited the mycelial growth of two rice pathogens ( P.oryzae and R.solan i) both in presence and absence of FeCl 3 which indicated the siderophore mediation along with antifungal metabolites.