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  Life cycles, fitness decoupling and the evolution of multicellularity

Hammerschmidt, K., Rose, C. J., Kerr, B., & Rainey, P. B. (2014). Life cycles, fitness decoupling and the evolution of multicellularity. Nature, 515(7525), 75-79. doi:10.1038/nature13884.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0024-496B-F Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0024-4977-4
Genre: Journal Article

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Hammerschmidt, Katrin1, Author              
Rose, Caroline J., Author
Kerr, Benjamin, Author
Rainey, Paul B.2, Author              
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1External Organizations, ou_persistent22              
2External Scientific Member Group Experimental and Evolutionary Genetics, Max Planck Institute for Evolutionary Biology, Max Planck Society, ou_1445637              

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 Abstract: Cooperation is central to the emergence ofmulticellular life; however, the means bywhich the earliest collectives (groups of cells) maintained integrity in the face of destructive cheating types is unclear. One idea posits cheats as a primitive germ line in a life cycle that facilitates collective reproduction. Here we describe an experiment in which simple cooperating lineages of bacteria were propagated under a selective regime that rewarded collective-level persistence. Collectives reproduced via life cycles that either embraced, or purged, cheating types. When embraced, the life cycle alternated between phenotypic states. Selection fostered inception of a developmental switch that underpinned the emergence of collectives whose fitness, during the course of evolution, became decoupled from the fitness of constituent cells. Such development and decoupling did not occur when groups reproduced via a cheat-purging regime. Our findings capture key events in the evolution of Darwinian individuality during the transition from single cells to multicellularity.

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Language(s): eng - English
 Dates: 2014-11-032014-09-222014-11-052014-11-06
 Publication Status: Published in print
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 Identifiers: DOI: 10.1038/nature13884
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Title: Nature
Source Genre: Journal
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Publ. Info: London : Nature Publishing Group
Pages: - Volume / Issue: 515 (7525) Sequence Number: - Start / End Page: 75 - 79 Identifier: ISSN: 0028-0836 (print)
ISSN: 1476-4687 (online)
CoNE: /journals/resource/954925427238