Effect study of Rhizobium leguminosarum bv. Viciae on some fungi group growth

Abstract

In this research we studied the effect of Rhizobium leguminosarum bv. Viciae on (8) isolates fungi growth by using antagonistic method , the bacteria showed inhibitory effect in ratio 100 % to (6) isolates namely Alternaria alternata , Penicillium sp. , Fusarium sp. Helminthosporium sp. , Nigrospora sp. and Cladosporium sp . and inhibit the growth of Aspergillus fumigatus fungi in ratio 84.9 % . while the isolate Stemphylium sp. showed resistance to R. leguminosarum bv. Viciae with ratio 22.7 % . The inhibitory effect of R. leguminosarum bv. Viciae may be attribute to the ability of this bacteria to resist many antibiotic by releasing β-lactamase enzyme and toxic compound that inhibit fungi growth.