VARIABILITY AND SELECTION OF MICROORGANISMS
Abstract
The variability of organisms in general and that of microorganisms in particular depends on their development in the conditions of inhabitual life. Organisms acquire new properties entirely corresponding to new conditions of existence. The disciples of I.I. Metchnikov have demonstrated in their works that through successive passages on culture media with growing concentrations of antiseptics, one can form races of bacteria resistant to these antiseptics. While cultivating yeasts on media containing antiseptics (cetylpyridinium bromide) N.G. Verbina obtained cultures more resistant to this antiseptic than the initial form. In our laboratory L. G. Loguninova while cultivating yeasts Saccharomyces cerevisiae at progressively increasing temperatures, obtained thermophilic yeasts which ferment carbohydrates of most at 40 degrees although the original yeasts scarcely multiply at this temperature.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 1968
- Accession Number
- AD0676952
Entities
People
- A. Imscenieski