Microbiology of Saturated Salt Solutions and Other Harsh Environments. IV. New Observations of Ribonucleotide-Induced Recovery of KCl-Habituated Penicillium notatum1

AUTOR(ES)

Siegel, S. M.

RESUMO

Salt-tolerant mutant Penicillium notatum sub-cultured in a glucose-peptone broth saturated with KCl shows continued attenuated growth when transferred to salt-free broth. Additional tests have shown E. coli S-RNA to be inferior to yeast RNA preparations, that base-free phosphate sources are inactive, but that nicotinamide adenine dinucleotide and flavine adenine dinucleotide are moderately active. All phosphate derivatives of adenine, cytosine and guanosine and inosine were active including 5′-polyphosphates, 3′(2′)-monophosphates 5′-monophosphates, and adenine 3′, 5′-cyclic monophosphate. Uracil derivatives were of low activity at best.

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