Lysogeny in lactic streptococci producing and not producing nisin
| Autor: | Władysław T. Dobrzański, Witold Kozak, Jolanta Zajdel, Marianna Rajchert-Trzpil |
|---|---|
| Rok vydání: | 1973 |
| Předmět: |
Ultraviolet Rays
viruses medicine.disease_cause General Biochemistry Genetics and Molecular Biology Microbiology chemistry.chemical_compound Bacteriolysis Lysogen Lysogenic cycle medicine Food microbiology Bacteriophages General Pharmacology Toxicology and Pharmaceutics Lysogeny Nisin Food Microbiology and Toxicology General Immunology and Microbiology biology Strain (chemistry) Streptococcus Lactococcus lactis General Medicine biochemical phenomena metabolism and nutrition biology.organism_classification Culture Media Radiation Effects Lytic cycle chemistry Food Microbiology bacteria |
| Zdroj: | Applied microbiology. 25(2) |
| ISSN: | 0003-6919 |
| Popis: | Eighty-seven strains of lactic streptococci (46 of Streptococcus lactis , 24 of S. diacetilactis , and 17 of S. cremoris ) were tested for lysogeny; 12 S. lactis strains produced nisin. Lysogeny was found in five S. lactis strains (two of them were nisin producers) and in two S. diacetilactis strains. Four S. lactis and two S. diacetilactis lysogens liberated phages both spontaneously and after ultraviolet treatment, and one S. lactis strain liberated phages spontaneously only. No lysogens were found among the S. cremoris strains tested. An initial characterization of the lysogens and their phages was made. The lytic spectrum of some of the examined phages was very narrow (homospecific), whereas that of others was wide, including strains of the three investigated species. |
| Databáze: | OpenAIRE |
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