alexa Competition-Mediated Antibiotic Induction in the Marine Bacterium Streptomyces tenjimariensis.
Biomedical Sciences

Biomedical Sciences

Journal of Bioengineering & Biomedical Science

Author(s): Slattery M, Rajbhandari I, Wesson K

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Abstract Microbial competition for limiting natural resources within a community is thought to be the selective force that promotes biosynthesis of antimicrobial compounds. The marine bacterium Streptomyces tenjimariensis produces the antibiotics istamycin A and B under select laboratory culture conditions; presumably these compounds serve an ecological role under natural conditions. Here we report results of a novel marine microbial competition experiment that examined the impact of co-culture of marine bacteria on istamycin production by S. tenjimariensis. Twelve of the 53 bacterial species tested (i.e., 22.6\%) induced Istamycin production; this antibiotic also inhibited growth of the competitor colonies. These results suggest that marine bacterial metabolites serve an ecological role in countering competitive species. This article was published in Microb Ecol and referenced in Journal of Bioengineering & Biomedical Science

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