Studies on the Luminous Bacteria

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Abstract
Photobacterium fischeri, P. splendidum, P. sepiae, and Achromobacter harveyi developed in inorganic media with simple organic compounds as the sole C source, while most strains of P. phosphoreum did not grow unless methionine was added as an accessory factor. Among 11 strains of P. phosphoreum, one was found which required no nutrilites, and another which could be "weaned" from methionine to accept homocystine as substitute, or even to develop in the absence of any accessory factor. The effect of various non-essential compounds on the growth of this species and the occasional anomalies in the development of the cultures indicated that many factors, including the previous history of the bacteria and the changes in both the organisms and their environment resulting from their growth play an important part in the course of development of each culture.

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