The dissociation of Bacillus thuringiensis as manifestation of «stationary-phase mutagenesis»
| Autor: | Elena V Kravets, Larisa V Malanushenko, Olga A Sekerina, Valentina I Chemerilova |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2006 |
| Předmět: |
Genetics
Ecology lcsh:QH426-470 Mutagenesis (molecular biology technique) Biology biology.organism_classification Biochemistry Dissociation (chemistry) bacillus thuringiensis Microbiology lcsh:Genetics Stationary phase Bacillus thuringiensis Genetics (clinical) Ecology Evolution Behavior and Systematics Recombination |
| Zdroj: | Экологическая генетика, Vol 4, Iss 1, Pp 28-35 (2006) |
| ISSN: | 2411-9202 1811-0932 |
| Popis: | Particularities of the morphological R-variants appearance in periodic culture of two strains of Bacillus thuringiensis were investigated. It is shown that both in optimum and in stressful conditions (рН 9,4) the R-variant frequency was increased in stationary phase only. Results from Luria and Delbrück's fluctuation test established that the frequency of R-variants is independent of the number generations passed and the number of colonies under investigation. Majority of R-variants was asporogenous and acrystalligenous, but didn't differ from original S-variants in set of others diagnostic characteristics that are significant for type. Mating between S- and R-variants has shown that the presence of R-variants in culture provides increasing to efficiency of recombination between of the subspecies. |
| Databáze: | OpenAIRE |
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