title: Competitive dominance of antibiotic-producing marine bacteria in mixed cultures.
abstract: Competitive relationships between antibiotic-producing marine bacteria and other non-producers were studied in seawater mixed cultures. Producer strains showed a competitive advantage against non-producers as the latter were inhibited after a short time. Inhibition was also noted in mixed cultures of two producer strains. The inhibitory effect was not observed in a mixed culture with two non-producers, which indicates that an amensalist interaction occurred between populations of antibiotic-producing and non-producing marine bacteria. The results suggest that antibiotics could play an important role in the competitive relationships between marine bacterial populations.
authors.affiliation: Departamento de Microbiologia y Parasitologia, Universidad de Santiago, Santiago de Compostela, Spain.
authors.forename: M L
authors.initials: ML
authors.lastname: Lemos
authors.forename: C P
authors.initials: CP
authors.lastname: Dopazo
authors.forename: A E
authors.initials: AE
authors.lastname: Toranzo
authors.forename: J L
authors.initials: JL
authors.lastname: Barja
mesh_terms: D000900:Anti-Bacterial Agents / Q000096:biosynthesis*; D001419:Bacteria / Q000254:growth & development / Q000378:metabolism*; D012623:Seawater; D014871:Water Microbiology
chemical_list: D000900:Anti-Bacterial Agents