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  Meta-population structure and the evolutionary transition to multicellularity

Rose, C. J., Hammerschmidt, K., Pichugin, Y., & Rainey, P. B. (2020). Meta-population structure and the evolutionary transition to multicellularity. Ecology Letters, 23, 1380-1390. doi:10.1111/ele.13570.

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 Creators:
Rose, Caroline J., Author
Hammerschmidt, Katrin1, Author              
Pichugin, Yuriy2, Author              
Rainey, Paul B.3, Author              
Affiliations:
1External Organizations, ou_persistent22              
2Department Evolutionary Theory, Max Planck Institute for Evolutionary Biology, Max Planck Society, ou_1445641              
3Department Microbial Population Biology, Max Planck Institute for Evolutionary Biology, Max Planck Society, ou_2421699              

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Free keywords: Dispersal, fitness decoupling, germ line, group selection, soma
 Abstract: The evolutionary transition to multicellularity has occurred on numerous occasions, but transi- tions to complex life forms are rare. Here, using experimental bacterial populations as proxies for nascent multicellular organisms, we manipulate ecological factors shaping the evolution of groups. Groups were propagated under regimes requiring reproduction via a life cycle replete with devel- opmental and dispersal (propagule) phases, but in one treatment lineages never mixed, whereas in a second treatment, cells from different lineages experienced intense competition during the disper- sal phase. The latter treatment favoured traits promoting cell growth at the expense of traits underlying group fitness – a finding that is supported by results from a mathematical model. Our results show that the transition to multicellularity benefits from ecological conditions that main- tain discreteness not just of the group (soma) phase, but also of the dispersal (germline) phase.

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Language(s): eng - English
 Dates: 2020-05-252020-06-082020-08-09
 Publication Status: Published online
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: DOI: 10.1111/ele.13570
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Title: Ecology Letters
Source Genre: Journal
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Publ. Info: Oxford, UK : Blackwell Science
Pages: - Volume / Issue: 23 Sequence Number: - Start / End Page: 1380 - 1390 Identifier: ISSN: 1461-023X
CoNE: https://pure.mpg.de/cone/journals/resource/954925625294