Rhodosporidium BANNO: Inaktivierende Wirksamkeit von ultraviolettem Licht und N-Methyl-N′-nitro-N-nitrosoguanidin in der Hefephase
| Autor: | Böttcher F, Samsonova Ia |
|---|---|
| Rok vydání: | 1977 |
| Předmět: |
chemistry.chemical_classification
biology N-Methyl-N'-nitro-N-nitrosoguanidine Yeast phase Mutagen General Medicine Fungus Rhodotorula biology.organism_classification medicine.disease_cause Applied Microbiology and Biotechnology Molecular biology Pigment chemistry visual_art Genetics Ultraviolet light medicine visual_art.visual_art_medium Carotenoid |
| Zdroj: | Zeitschrift für allgemeine Mikrobiologie. 17:283-292 |
| ISSN: | 1521-4028 0044-2208 |
| DOI: | 10.1002/jobm.3630170405 |
| Popis: | The inactivation of stationary phase cells by ultraviolet light (UV) and N-methyl-N'-nitro-N-nitrosoguanidine (MNNG) was examined in eight wild strains of Rhodotorula, six of which are the sporidial yeast phase of Rhodosporidium, a basidiomycetous fungus. It has been found that (1) the UV-resistance of Rhodosporidium and Rhodotorula yeasts is higher and the MNNG-resistance lower than the resistance of Candida and Hansenula yeasts, (2) the shape of the survival curves is sigmoid in the case of UV and two-phase exponential in the case of MNNG, (3) the mutagen sensitivities but not the inactivation kinetics of the strains are different, (4) the UV- and MNNG-sensitivities for each of the strains are correlated, (5) the relatively high resistance to UV cannot be due to the carotenoid pigments of the cells, (6) mutations to UV-sensitivity can be induced with a high rate, (7) the sigmoidal character of the UV survival curves were reduced or transformed to an exponential shape by the UVS-mutations. |
| Databáze: | OpenAIRE |
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