Nutritional Requirements in Multiple Auxotrophic Lactic Acid Bacteria : Geneti ¢ Lesions
نویسنده
چکیده
In a study of genetic lesions respo"sible for amino acid requirements in multiple auxotrophic lactic aeid bacteria, a systematic attempt was made to isolate mutants that could synthesize each of the amino acids required by the parental strains of Lactocoecus lactis, Enterocoecus flaecium, and Pediococcus acidilactiei. After treatment with appropriate mutagens or, in some cases, spontaneously, such mutants could indeed be obtained with respect te many but not all essential amino acids. Successfu1 isolation of
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