Antimicrobial Activities of Streptomyces sp. Obtained from Garden Soil

Pallavi

Abstract: Streptomyces sps. is well known antibiotic producing Actinomycetes. These are most abundant strains of bacteria present in soil. In present study, Streptomyces sps. was isolated from garden soil samples collected from Patna town (Bihar, India). Samples were identified as Streptomyces sp. with help of morphology, microcopy and biochemical tests. Antimicrobial activities of isolated bacteria was examined against three pathogenic fungal members such as Penicillium sp., Candida albicans and Aspergillus niger as well as three pathogenic bacteria such as Escherichia coli, Salmonella typhi and Enterococcus faecalis. Cell free supernatant of Streptomyces species is used for this experimental study. The zone of inhibition of pathogens were measured after 2 and 5 days of incubation. Penicillium sp. was observed as most sensitive and showed 28 mm and 26mm zone of inhibition after 2 and 5 days of incubation. Candida albicans, Escherichia coli and Enterococcus faecalis showed similar sensitiveness as 20 mm zone of inhibition after 2 days of incubation. Aspergillus niger remained least sensitive (5-6 mm zone of inhibition). Almost all pathogens remained more sensitive after 2 days of incubation. The results indicates that Streptomyces sp. can be used as biocontrol agent for pathogenic microbes.

Keywords: Antimicrobial, Streptomyces sp., Garden Soil, Pathogenic microbes

How to Cite?: Pallavi, "Antimicrobial Activities of Streptomyces sp. Obtained from Garden Soil", Volume 14 Issue 10, October 2025, International Journal of Science and Research (IJSR), Pages: 506-508, https://www.ijsr.net/getabstract.php?paperid=SR251009162557, DOI: https://dx.doi.org/10.21275/SR251009162557