Osmotic Stability and Sodium and Potassium Content of L-Forms of Streptococcus faecalis

AUTOR(ES)

Montgomerie, J. Z.

RESUMO

A stable L-form of Streptococcus faecalis (T53) was transferred in media containing decreasing concentrations of sucrose until it grew in medium without added osmotic stabilizer. This L-form (designated T53I) was compared with T53 from which it was derived. The survival of these two L-forms suspended at different osmolalities showed that maximal survival for T53I was 350 to 400 milliosmolal and for T53 was 900 to 1,000 milliosmolal. Both peaks were at the osmolality of their growth media. Measurement of intracellular potassium and sodium showed that the concentration of these ions was reduced in T53I.

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