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  • Cornwallis, Charlie KLund University,Lunds universitet,MEMEG,Biologiska institutionen,Naturvetenskapliga fakulteten,Molekylär ekologi och evolution,Forskargrupper vid Lunds universitet,Department of Biology,Faculty of Science,Molecular Ecology and Evolution Lab,Lund University Research Groups (author)

Single-cell adaptations shape evolutionary transitions to multicellularity in green algae

  • Article/chapterEnglish2023

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  • 2023

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  • LIBRIS-ID:oai:lup.lub.lu.se:50de6f52-b2ca-4a50-874e-e1cd6a5ff516
  • https://lup.lub.lu.se/record/50de6f52-b2ca-4a50-874e-e1cd6a5ff516URI
  • https://doi.org/10.1038/s41559-023-02044-6DOI

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  • Language:English
  • Summary in:English

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  • Subject category:art swepub-publicationtype
  • Subject category:ref swepub-contenttype

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  • The evolution of multicellular life has played a pivotal role in shaping biological diversity. However, we know surprisingly little about the natural environmental conditions that favour the formation of multicellular groups. Here we experimentally examine how key environmental factors (predation, nitrogen and water turbulence) combine to influence multicellular group formation in 35 wild unicellular green algae strains (19 Chlorophyta species). All environmental factors induced the formation of multicellular groups (more than four cells), but there was no evidence this was adaptive, as multicellularity (% cells in groups) was not related to population growth rate under any condition. Instead, population growth was related to extracellular matrix (ECM) around single cells and palmelloid formation, a unicellular life-cycle stage where two to four cells are retained within a mother-cell wall after mitosis. ECM production increased with nitrogen levels resulting in more cells being in palmelloids and higher rates of multicellular group formation. Examining the distribution of 332 algae species across 478 lakes monitored over 55 years, showed that ECM and nitrogen availability also predicted patterns of obligate multicellularity in nature. Our results highlight that adaptations of unicellular organisms to cope with environmental challenges may be key to understanding evolutionary routes to multicellular life.

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  • Svensson-Coelho, MariaLund University,Lunds universitet,Enhet akvatisk ekologi,Biologiska institutionen,Naturvetenskapliga fakulteten,Evolutionär ekologi,MEMEG,Molekylär ekologi och evolution,Forskargrupper vid Lunds universitet,Division aquatic ecology,Department of Biology,Faculty of Science,Evolutionary ecology,Molecular Ecology and Evolution Lab,Lund University Research Groups(Swepub:lu)ma3750sv (author)
  • Lindh, MarkusSwedish Meteorological and Hydrological Institute(Swepub:lu)ma0840li (author)
  • Li, QinyangLund University,Lunds universitet,Enhet akvatisk ekologi,Biologiska institutionen,Naturvetenskapliga fakulteten,Evolutionär ekologi,Molekylär ekologi och evolution,Forskargrupper vid Lunds universitet,Division aquatic ecology,Department of Biology,Faculty of Science,Evolutionary ecology,Molecular Ecology and Evolution Lab,Lund University Research Groups(Swepub:lu)qi2223li (author)
  • Stábile, FrancaLund University,Lunds universitet,Enhet akvatisk ekologi,Biologiska institutionen,Naturvetenskapliga fakulteten,Akvatisk ekologi,Forskargrupper vid Lunds universitet,Division aquatic ecology,Department of Biology,Faculty of Science,Aquatic Ecology,Lund University Research Groups(Swepub:lu)fr1440st (author)
  • Hansson, Lars-AndersLund University,Lunds universitet,Enhet akvatisk ekologi,Biologiska institutionen,Naturvetenskapliga fakulteten,Akvatisk ekologi,Forskargrupper vid Lunds universitet,CAnMove - Centrum för forskning om djurs spridning och flyttning,Division aquatic ecology,Department of Biology,Faculty of Science,Aquatic Ecology,Lund University Research Groups,CAnMove - Centre for Animal Movement Research(Swepub:lu)lim-lah (author)
  • Rengefors, KarinLund University,Lunds universitet,Enhet akvatisk ekologi,Biologiska institutionen,Naturvetenskapliga fakulteten,Akvatisk ekologi,Forskargrupper vid Lunds universitet,Division aquatic ecology,Department of Biology,Faculty of Science,Aquatic Ecology,Lund University Research Groups(Swepub:lu)lim-kre (author)
  • MEMEGBiologiska institutionen (creator_code:org_t)

Related titles

  • In:Nature Ecology and Evolution7:6, s. 889-9022397-334X

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