Studies on megacinogeny in Bacillus cereus. II. Bacillus cereus isolates characterized by prophage-controlled production of megacin A (phospholipase A)
Five out of a number of Bacillus cereus strains isolated from soil produced high titre specific bacteriocin (megacin A) in mitomycin C-induced cultures. In the course of cultivation with ethidium bromide, the strains gave off segregants not producing bacteriocin (cin-). The lysate of two wild strain...
Elmentve itt :
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| Dokumentumtípus: | Cikk |
| Megjelent: |
1976
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| Sorozat: | ACTA MICROBIOLOGICA ACADEMIAE SCIENTIARUM HUNGARICAE
23 No. 3 |
| Tárgyszavak: | |
| mtmt: | 2229114 |
| Online Access: | http://publicatio.bibl.u-szeged.hu/31653 |
| Tartalmi kivonat: | Five out of a number of Bacillus cereus strains isolated from soil produced high titre specific bacteriocin (megacin A) in mitomycin C-induced cultures. In the course of cultivation with ethidium bromide, the strains gave off segregants not producing bacteriocin (cin-). The lysate of two wild strains formed plaques on the corresponding cin- bacteria. The two phages (wx23 and wx26) were identical in antigenic structure with phage wx was present in the lysate of B. cereus strain W, and converted cin- derivatives into cultures producing megacin A (phospholipase A). The phages produced plaques at 26 degrees C but not at 37 degrees C. In the lysates of the remaining three strains phages were not detected with biological and morphological methods; these cultures have been assumed to carry defective prophage genome. As the corresponding prophages are responsible for the determination of inducible phospholipase A production, phages named wx seem to form a separate group of B. cereus phages. |
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| Terjedelem/Fizikai jellemzők: | 283-291 |
| ISSN: | 0001-6187 |