LAMPE, Nathanael; MARIN, Pierre; COULON, Marianne; MICHEAU, Pierre; MAIGNE, Lydia; SARRAMIA, David; PIQUEMAL, Fabrice; INCERTI, Sébastien; BIRON, David; GHIO, Camille; SIME-NGANDO, Télesphore; HINDRÉ, Thomas; BRETON, Vincent

doi:10.1038/s41598-019-51519-9

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LAMPE, Nathanael
Laboratoire de Physique de Clermont [LPC]

MARIN, Pierre
Laboratoire de Physique de Clermont [LPC]

COULON, Marianne
Laboratoire de Physique de Clermont [LPC]

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Scientific Reports. 2019, vol. 9, n° 1, p. 14891

Nature Publishing Group

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Over millennia, life has been exposed to ionizing radiation from cosmic rays and natural radioisotopes. Biological experiments in underground laboratories have recently demonstrated that the contemporary terrestrial radiation background impacts the physiology of living organisms, yet the evolutionary consequences of this biological stress have not been investigated. Explaining the mechanisms that give rise to the results of underground biological experiments remains difficult, and it has been speculated that hereditary mechanisms may be involved. Here, we have used evolution experiments in standard and very low-radiation backgrounds to demonstrate that environmental ionizing radiation does not significantly impact the evolutionary trajectories of E. coli bacterial populations in a 500 generations evolution experiment.< Leer menos

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Reducing the ionizing radiation background does not significantly affect the evolution of Escherichia coli populations over 500 generations

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