Screening of Bacillus spp. as potential biocontrol agents against sunflower pathogens

Bacillus spp. are well known to protect plants from seed or soil-borne pathogens by the synthesis of various metabolites with antimicrobial activity, such as hy?drolytic enzymes and antibiotics. This study aimed select most effective a group ten antagonistic strains antifungal activity assay. were primarily isolated soil identified B. safensis, pumilus subtilis 16S rDNA sequencing. The four analyzed fungi: Macrophomina phaseolina, Alternaria alternata, Cladosporium cladosporoides, Sclerotinia sclerotiorum, obtained sunflower seeds using PCR analysis primers specific for ITS region. bacterial was examined in dual plate demonstrated highest antagonism against S. followed C. M. A. an average percentage growth inhibition (PGI) 77%, 70%, 64% 59%, respectively. Overall, included this rather strong biocontrol potential, although effect particular strain varied depending on tested fungi. toward phaseolina alternata exhibited safensis B2 B3. B11 B32 efficient whereas B3 B7 had sclerotiorum. Findings point fact that could be used potential agents improving plant health productivity.