Comparison of growth of photosynthetic bacteria in axenic cultures and in co-cultures

The growth of photosynthetic bacteria (PSB) in axenic and co-cultures was studied. The abundance of PSB co-cultured with PSB strains or with heterotrophic bacteria strains was higher than that in axenic culture. The study of the interaction between PSB and heterotrophic bacteria strains revealed the relationship of synergism and/or commensalism.