Vol. 12, Issue 9 (2023)

Author(s):
J Aswathy, K Elanchezhyan, L Allwin and T Abdul Razak

Abstract:
Streptomyces is a gram-positive, prokaryotic and multicellular organisms. The secondary metabolites of Streptomyces were used in the pharmaceutical as well as in the agricultural industry, as bio-control agents. Soil samples were collected from the various regions of Western Ghats and isolation of Streptomyces were carried out by serial dilution and pour plating technique. The isolates were purified and the strains S. katrae (ST 1), S. acidiscabies (ST 3), S. andamanensis (ST 5) and S. cerasinus (ST 7) were cultured on International Streptomyces Project (ISP 2) broth and also screened against the non-target organisms such as Indian honeybee, silkworm, green lacewing and egg parasitoid, Trichogramma chilonis Ishii. The strain, S. katrae (ST 1) and the consortium of S. katrae, S. acidiscabies, S. andamanensis and S. cerasinus (ST 1 + ST 3 + ST 5 + ST 7) were also safer to Indian honeybee, A. cerana indica as compared to other target organisms viz., B. mori, C. carnea and T. chilonis.