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  The evolution of convex trade-offs enables the transition towards multicellularity

Bernardes, J. P., John, U., Woltermann, N., Valiadi, M., Hermann, R. J., & Becks, L. (2021). The evolution of convex trade-offs enables the transition towards multicellularity. Nature Communications, 12: 4222. doi:10.1038/s41467-021-24503-z.

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 Creators:
Bernardes, Joana P.1, Author           
John, Uwe, Author
Woltermann, Noemi1, Author           
Valiadi, Martha1, Author           
Hermann, Ruben J., Author
Becks, Lutz1, Author           
Affiliations:
1Emmy-Noether-Group Community Dynamics, Department Evolutionary Ecology (Milinski), Max Planck Institute for Evolutionary Biology, Max Planck Society, ou_2068285              

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Free keywords: Green-alga; palmelloid formation; Chlamydomonas; dynamics; origin; prey; individuality; diversity; radiation; gene
 Abstract: The evolutionary transition towards multicellular life often involves growth in groups of undifferentiated cells followed by differentiation into soma and germ-like cells. Theory predicts that germ soma differentiation is facilitated by a convex trade-off between survival and reproduction. However, this has never been tested and these transitions remain poorly understood at the ecological and genetic level. Here, we study the evolution of cell groups in ten isogenic lines of the unicellular green algae Chlamydomonas reinhardtii with prolonged exposure to a rotifer predator. We confirm that growth in cell groups is heritable and characterized by a convex trade-off curve between reproduction and survival. Identical mutations evolve in all cell group isolates; these are linked to survival and reducing associated cell costs. Overall, we show that just 500 generations of predator selection were sufficient to lead to a convex trade-off and incorporate evolved changes into the prey genome.

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Language(s): eng - English
 Dates: 2021-02-152021-06-172021-07-092021
 Publication Status: Issued
 Pages: -
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 Identifiers: DOI: 10.1038/s41467-021-24503-z
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Title: Nature Communications
  Abbreviation : Nat. Commun.
Source Genre: Journal
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Publ. Info: London : Nature Publishing Group
Pages: - Volume / Issue: 12 Sequence Number: 4222 Start / End Page: - Identifier: ISSN: 2041-1723
CoNE: https://pure.mpg.de/cone/journals/resource/2041-1723