ISOLATION OF THE MARINE ACTINOMYCETES FROM THE BAY OF BENGAL SEDIMENTS

Abstract

Actinomycetes are a group of organisms that morphologically resemble fungi and physiologically resemble bacteria. Marine environment is an abundant source for isolation of new micro organisms. Gram positive actinomycetes bacteria are of special actinomycetes are known to produce secondary metabolities which inhibits many micro organisms. Total 2 actinomycetes were identified out of 22 isolates from marine sediment samples of different areas of Rama Krishna Beach, Visakhapatnam, Andhra Pradesh, India. For isolation of actinomycetes starch casein agar and yeast extract malt extract agar media were used. It was found that actinomycetes isolates were identified as Actinopolyspora sp. and Streptomyces sp. Streptomyces sp. showed higher antibacterial activity 34.2 mm inhibition diameter against Staphylococcus aureus. Both shows less antifungal activity compare with antibacterial activity. Actinopolyspora sp. showed 10 mm inhibition diameter against Aspergillus niger. Streptomyces sp showed high antifungul activity, which was 22.4mm inhibition diameter compare with Actinopolyspora sp.