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Geography and environmental pressure are predictive of class-specific radioresistance in black fungi |
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| Authors: | Lorenzo Aureli Claudia Coleine Manuel Delgado-Baquerizo Dag Ahren Alessia Cemmi Ilaria Di Sarcina Silvano Onofri Laura Selbmann |
| Institution: | 1. Department of Ecological and Biological Sciences, University of Tuscia, Viterbo, Italy
Department of Biology, Lund University, Lund, Sweden Contribution: Conceptualization (equal), Data curation (equal), Formal analysis (equal), Investigation (equal), Methodology (equal), Software (equal), Validation (equal), Visualization (equal), Writing - original draft (equal), Writing - review & editing (equal);2. Department of Ecological and Biological Sciences, University of Tuscia, Viterbo, Italy;3. Unidad Asociada CSIC-UPO (BioFun), Universidad Pablo de Olavide, Sevilla, Spain Laboratorio de Biodiversidad y Funcionamiento Ecosistémico, Instituto de Recursos Naturales y Agrobiología de Sevilla (IRNAS), CSIC, Sevilla, Spain Contribution: Methodology (equal), Validation (equal), Writing - review & editing (equal);4. Department of Biology, Lund University, Lund, Sweden Department of Biology, National Bioinformatics Infrastructure Sweden (NBIS), Lund University, Lund, Sweden Contribution: Validation (equal), Writing - review & editing (equal);5. Fusion and Technology for Nuclear Safety and Security Department, Italian National Agency for New Technologies, Energy and Sustainable Economic Development (ENEA FSN-FISS-SNI), Rome, Italy Contribution: Methodology (equal), Writing - review & editing (equal);6. Department of Ecological and Biological Sciences, University of Tuscia, Viterbo, Italy Contribution: Funding acquisition (equal), Project administration (equal);7. Department of Ecological and Biological Sciences, University of Tuscia, Viterbo, Italy Mycological Section, Italian Antarctic National Museum (MNA), Genoa, Italy Contribution: Conceptualization (equal), Funding acquisition (equal), Investigation (equal), Project administration (equal), Supervision (equal), Validation (equal), Writing - original draft (equal), Writing - review & editing (equal) |
| Abstract: | Black fungi are among the most resistant organisms to ionizing radiation on Earth. However, our current knowledge is based on studies on a few isolates, while the overall radioresistance limits across this microbial group and the relationship with local environmental conditions remain largely undetermined. To address this knowledge gap, we assessed the survival of 101 strains of black fungi isolated across a worldwide spatial distribution to gamma radiation doses up to 100 kGy. We found that intra and inter-specific taxonomy, UV radiation, and precipitation levels primarily influence the radioresistance in black fungi. Altogether, this study provides insights into the adaptive mechanisms of black fungi to extreme environments and highlights the role of local adaptation in shaping the survival capabilities of these extreme-tolerant organisms. |
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