Research Keyword: DNA repair

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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Comparative Genomics and Phylogenomics of Novel Radiation-Resistant Bacterium Paracoccus qomolangmaensis sp. nov. S3-43T, Showing Pyrethroid Degradation

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Scientists discovered a new type of bacteria called Paracoccus qomolangmaensis living on Mount Everest at extreme altitude where radiation is 10-20 times stronger than at sea level. This remarkable bacterium can survive intense radiation, oxidative stress, and can degrade harmful pesticides called pyrethroids. The bacteria’s genome contains special genes for repairing DNA damage and protecting itself from oxidative stress, making it a valuable resource for understanding how life survives in extreme conditions and potentially cleaning up pesticide contamination.

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Adaptive Responses in High-Radiation Environments: Insights From Chernobyl Wildlife and Ramsar Residents

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Animals and humans living in highly radioactive environments have evolved protective mechanisms to survive and thrive. Frogs in Chernobyl have developed darker skin that absorbs radiation energy, while people in Ramsar have enhanced DNA repair abilities. These natural adaptations challenge the assumption that all radiation exposure is harmful and provide insights into how life adapts to environmental challenges.

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Differential responses of Cacao pathogens Colletotrichum gloeosporioides and Pestalotiopsis sp. to UVB 305 nm and UVC 275 nm

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Scientists studied how UV light can be used to fight fungal diseases that harm cacao plants. They found that UVC light (a type of ultraviolet radiation) is much more effective at killing these fungi than UVB light. Some fungi were very resistant to UV treatment, but the researchers discovered that combining UV light with sound waves (sonication) could overcome this resistance, offering a chemical-free way to protect crops.

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Pan-genomic characterization and structural variant analysis reveal insights into spore development and species diversity in Ganoderma

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Researchers completed the first comprehensive genome study of 15 Ganoderma (Lingzhi/Reishi) varieties, including five new Chinese strains. They discovered that specific genetic changes in the MSH4 gene dramatically increase spore production in one superior strain. These findings help explain why different Ganoderma varieties have different medicinal properties and can guide breeding of better medicinal mushroom varieties.

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Adaptive Responses in High-Radiation Environments: Insights From Chernobyl Wildlife and Ramsar Residents

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Animals and people living in highly radioactive areas have developed natural adaptations to survive and thrive despite dangerous radiation levels. Frogs in Chernobyl have evolved darker skin that helps protect against radiation, while residents of Ramsar, Iran have developed enhanced DNA repair abilities over generations. These discoveries challenge traditional beliefs about radiation dangers and suggest that life can adapt to extreme environmental stressors in unexpected ways.

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