Isolasi Dan Aktivitas Antimikroba Aktinomisetes Asal Tanah Rizosfer Cagar Biosfer Giam Siak Kecil-Bukit Batu Riau

Abstract

The aims of study are to isolate actinomycetes from rhizosphere soil, to determine the ability of actinomycetes to inhibit the growth of bacteria (Streptococcus pyogenes and Escherichia coli) and fungi (Fusarium oxysporum and Ganoderma BTA1). A total of 15 actinomycetes strains were recovered from rhizosphere soil samples using pour plate method with Starch Casein Agar (SCA). The results showed that 7 isolates (TBR1, TBR2, TBR3, MHGI1, MHG3, MHG4, FPR4) were active againts all microbial targets, 1 isolate (MHG2) was active againts S. pyogenes, F. oxysporum, and Ganoderma sp BTA1, 2 isolates (MHG5, FPR3) were active againts S. pyogenes, E. coli and F. oxysporum, and Ganoderma sp BTA1, 1 isolates (FPR1) was active againts S. pyogenes, E. coli and F. oxysporum, 1 isolate (FPR5) was only active againts Ganoderma sp BTA1, 2 isolates (TBR4, FPR2) were only active againts E. coli, and isolates (AKA1) was not active againts all microbial targets.