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Improving our understanding of adaptation to environmental change by addressing multi-generational non-genetic inheritance

Improving our understanding of adaptation to environmental change by addressing multi-generational non-genetic inheritance

This is a Preprint and has not been peer reviewed. This is version 3 of this Preprint.

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Authors

Giacomo Zilio, Stéphanie Bedhomme, Emanuel A. Fronhofer, Staffan Jacob, Delphine Legrand, Hervé Philippe, Luis-Miguel Chevin

Abstract

Populations that face abrupt environmental change reducing their fitness can recover by adaptive genetic evolution over tens to hundreds of generations, but their immediate responses often involve non-genetic mechanisms. When such non-genetic responses span multiple generations, their dynamics may be difficult to distinguish from those of genetic evolution. We here argue that focusing research on such multigenerational non-genetic inheritance (MUNGI) should be crucial to better understand and predict eco-evolutionary responses to environmental stress. We survey the most salient forms of MUNGI (delayed impact of stress, transgenerational plasticity, and priming), with a focus on how they may impact the dynamics of observed phenotypic change across multiple generations in concrete experimental contexts (experimental evolution, common gardens, ecotoxicological experiments, dose-response assays). Analysing the rate, stability, and reversibility of MUNGI, as well as their relative contributions to overall phenotypic responses, and their interactions with genetic changes, should be particularly fruitful towards a more comprehensive deciphering of evolutionary responses to novel or changing environments.

DOI

https://doi.org/10.32942/X2V04W

Subjects

Life Sciences

Keywords

Epigenetics, plasticity, Transgeneretional effects, fitness, Stability, Reversibility, transient dynamics, stressors

Dates

Published: 2025-01-06 14:15

Last Updated: 2025-07-27 13:29

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License

CC-BY Attribution-NonCommercial 4.0 International

Additional Metadata

Language:
English

Data and Code Availability Statement:
Not applicable