Abstract
Deinococcus radiodurans (DR) exhibits strong resistance to ionizing radiation. In this study, by constructing a radiation-resistant genetically engineered strain overexpressing the Cs gene, the tolerance of the bacterium to aluminum ions was enhanced, thereby achieving the goal of microbial sustainable remediation of uranium-contaminated environments. Methods: 1. Extraction of the recombinant plasmid pRADK-Cs, transformation into DR, and verification. 2. Investigation of factors such as time and initial uranium concentration on the efficiency of uranium accumulation by the recombinant strain, characterized by changes in functional groups and surface morphology before and after accumulation using techniques such as scanning electron microscope. Conclusions: The recombinant strain Deino-Cs can reduce the inhibitory effect of aluminum ions on uranium accumulation capability, and it exhibits a higher uranium accumulation rate compared to the wild-type strain.
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Acknowledgements
This work was financially supported by the Independent Research Project of the China Academy of Radiation Protection (2022 Platform Open Fund Project of the National Key Laboratory of Radiation Environment and Health for Environmental Protection -4), the Environmental Protection Research Project of Hunan Province (HBKYXM-2023021), the National Natural Science Foundation of China (42377076), the Natural Science Foundation of Hunan Province (2023JJ50129), and the Basic Applied Research Special Project of Hengyang (202002042158).
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Jiang, F., Chen, L., Cheng, C. et al. Study on the prevention and control of uranium pollution by Deinococcus radiodurans overexpressing Cs gene. J Radioanal Nucl Chem 333, 927–950 (2024). https://doi.org/10.1007/s10967-023-09330-4
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DOI: https://doi.org/10.1007/s10967-023-09330-4