Antagonistic effects of Streptomyces sp. SRM1 on colletotrichum musae

Abstract

In an attempt to understand the mode of action of this antagonist in nature, the interaction between Streptomyces sp. SRM 1 and C. musae was studied by dual culture on agar plates. Evidence for the antibiosis of Streptomyces sp. SRM1 was demonstrated by inhibition zones in in vitro plate assay. The crude extract from the culture of Streptomyces sp. SRM1 also produced antifungal activity, which showed antagonistic effects against C. musae such as swelling, distortion and excessive branching of hyphae and inhibition of spore germination. An indirect method was used to show antagonistic effect of Streptomyces sp. SRM1 against C. musae in soil. This study suggests the potential of developing Streptomyces sp. SRM1 for the biological control of anthracnose disease of banana caused bv C. musae. © 2009 Asian Network for Scientific Information.