Journal of Bacteriology 1981-09-01

Production of amino acids by analog-resistant mutants of the cyanobacterium Spirulina platensis.

G Riccardi, S Sora, O Ciferri

Index: J. Bacteriol. 147(3) , 1002-7, (1981)

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Abstract

Mutants of Spirulina platensis resistant to 5-fluorotryptophan, beta-3-thienyl-alanine, ethionine, p-fluorophenylalanine, or azetidine-2-carboxylic acid were isolated. Some of these mutants appeared to be resistant to more than one analog and to overproduce the corresponding amino acids. A second group was composed of mutants that were resistant to one analog only. Of the latter mutants, one resistant to azetidine-2-carboxylic acid was found to overproduce proline only, whereas one resistant to fluorotryptophan and one resistant to ethionine did not overproduce any of the tested amino acids.

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