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[UV-sensitive mutants of Streptomyces olivaceus VKX]
Tsitologiia I Genetika
|September 1, 1979
Abstract:
14 UV-sensitive (uvs) mutants of S. olivaceus VKX isolated by replica-plating technique among 45780 survivors after the induction of mutations nitrosoguanidine or UV (about 0.03%). The sensitivity of uvs-mutants to UV-irradiation was 5-10 times higher than in the initial strains and in 4 uvs-mutants it was 100 and more times higher. One of the mutants was supersensitive to UV radiation.
Insights
Researchers identified 14 UV-sensitive mutants in S. olivaceus VKX. These mutants exhibited significantly higher sensitivity to UV radiation compared to the original strains, with some being over 100 times more sensitive.
Area of Science:
- Microbiology
- Genetics
- Radiation Biology
Context:
- The study investigates DNA repair mechanisms in *S. olivaceus*.
- UV radiation is a known mutagenic agent.
- Understanding UV sensitivity is crucial for microbial genetics.
Purpose:
- To isolate and characterize UV-sensitive mutants of *S. olivaceus* VKX.
- To quantify the increased sensitivity of these mutants to UV irradiation.
- To identify potential novel genes involved in DNA repair pathways.
Summary:
- 14 UV-sensitive (uvs) mutants of *S. olivaceus* VKX were isolated from 45,780 survivors after mutagenesis with nitrosoguanidine or UV.
- These uvs-mutants displayed 5-10 times higher sensitivity to UV irradiation than the parent strain.
- Four mutants showed 100-fold or greater UV sensitivity, with one exhibiting supersensitivity.
Impact:
- This research provides valuable genetic tools for studying DNA repair in *S. olivaceus*.
- The identified mutants can aid in elucidating the molecular mechanisms of UV resistance and mutagenesis.
- Findings contribute to the broader understanding of microbial responses to DNA damage.