Research Keyword: UV radiation

Ambient ultraviolet radiation induces DNA damage in amphibian larvae under semi-natural conditions

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Scientists studied whether natural sunlight damages the DNA of tadpoles by raising striped marsh frog larvae in outdoor pools with either normal or reduced sun exposure. They found that natural sunlight does cause measurable DNA damage in tadpoles, and some individual tadpoles were more affected than others. This research suggests that as UV radiation changes due to climate change, some amphibian populations may face greater risks to their survival and development.

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Intermittent low-dose far-UVC irradiation inhibits growth of common mold below threshold limit value

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This study shows that a special type of ultraviolet light called far-UVC, operating at 222 nanometers, can effectively stop common household mold from growing. The light works best when it cycles on and off throughout the day, and importantly, the doses used are safe enough for people to be in the same room. This technology could help prevent mold problems in homes and hospitals without requiring chemicals or forcing people to leave the area.

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UV-Induced Mutants of Metarhizium anisopliae: Improved Biological Parameters, Resistance to Stressful Factors, and Comparative Transcriptomic Analysis

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Scientists used UV light to create improved mutant strains of a fungus that naturally kills insect pests. The best mutant strain showed increased ability to survive harsh environmental conditions like heat and oxidative stress, while becoming more effective at infecting target pest insects. This improvement makes the fungus more practical for use as a natural pesticide in fields exposed to sunlight. Gene analysis revealed the mutant fungi enhanced certain protective proteins while reducing reliance on traditional antioxidant systems.

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