Studies on soil streptomyces from Saudia Arabia

The objective of the present study was to investigate the characteristics of Streptomyces in some Saudia Arabia soil as well as their biological, biochemical and anti-microbial activities. A total of 129 strains of Streptomyces were isolated from different samples of soil. Cultural and morphological characters showed the dominance of grey aerial myceliumn species; 31% of the isolates have antimicrobial activity, All of these isolates decompose starch, coagulate the milk and most of them had about 70% cellulytic activity, whereas gelatin liquefying activity was about 77.5 5 and 52.5% produced melanin pigments. This means that the isolated Stretomyces produced many enzymes