Mutants of Pseudomonas putida mt-2 that are unable to convert benzoate to catechol were
isolated and grouped into two classes: those that did not initiate attack on benzoate and …

We have constructed strains that allow a direct selection for mutators of Escherichia coli on a
single plate medium. The plate selection is based on using two different markers whose …

When bacterial cells are subjected to a strong selective pressure it often induces specific
mutations. Here a model is considered in which errors are introduced at random in one of …

MATERIALS AND METHODS Media: Nutrient Broth (NB): Oxoid Nutrient Broth Number 2
2.5%, Difco Yeast Extract 0.3%. Nutrient Agar (NA): NB solidified with 1.5% Agar (Davis) …

Phenylacetic acid (PhAcOH) and 4‐hydroxyphenylacetic acid (4HOPhAcOH) are
catabolized in Pseudomonas putida U through two different pathways. Mutation carried out …

MATERIALS AND METHODS The'mutation studied in these experiments was that from a
histidineless (h-) to a non-histidine requiring (h+) condition in Escherichia coli (strain 15) …

Several investigators have recently reported that significant numbers of appropriately
adapted mutants can be induced in bacterial and yeast strains by exposing stationary phase …

The capacity of Pseudomonas putida PpG7 (ATCC 17,485) to grow on naphthalene,
phenotype Nah+, is lost spontaneously, and the frequency is increased by treatment with …

Pseudomonas putida KT2440 uses proline as the sole C and N source. Utilization of this
amino acid involves its uptake, which is mediated by the PutP protein, and its conversion …