Cited by 233Genomics and Phylogenetic StudiesProtist diversity and phylogenyOrigins and Evolution of Life

Integrative modeling of gene and genome evolution roots the archaeal tree of life

Open access
Williams, Tom A., Szöllősi, Gergely J., Spang, Anja, Foster, Peter G., Heaps, Sarah E., Boussau, Bastien, Ettema, Thijs J. G., Embley, T. Martin·2017·Proceedings of the National Academy of Sciences

Abstract

Significance: The Archaea represent a primary domain of cellular life, play major roles in modern-day biogeochemical cycles, and are central to debates about the origin of eukaryotic cells. However, understanding their origins and evolutionary history is challenging because of the immense time spans involved. Here we apply a new approach that harnesses the information in patterns of gene family evolution to find the root of the archaeal tree and to resolve the metabolism of the earliest archaeal cells. Our approach robustly distinguishes between published rooting hypotheses, suggests that the first Archaea were anaerobes that may have fixed carbon via the Wood–Ljungdahl pathway, and quantifies the cumulative impact of horizontal transfer on archaeal genome evolution.

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Integrity signals

Registry

Crossref · 10.1073/pnas.1618463114

Cites

115 of 115 references verified0 citation errors · 0 not checkable

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  • The last archaeal common ancestor (LACA) is likely to have encoded a CODH/ACS.

    “Furthermore, the last archaeal common ancestor (LACA) is likely to have encoded a CODH/ACS (Williams et al. 2017).”

    From The Emergence of Life (2019) · cites this paper as Williams et al. 2017

    The Fig. 4 caption (Results and Discussion, p. 7) says the reconstruction supports a LACA that encoded cdhC, a subunit of CODH/ACS. It does not establish that LACA encoded the complete enzyme, as the citing sentence implies; the caption also notes that reconstructions at deep nodes are incomplete. (LLM, conf=0.86)

    Experimental — accuracy not yet measured
  • The ancestral physiology of archaea was likely hydrogen-dependent methanogenesis.

    “Mei et al. (2023) and Williams et al. (2017) found that the ancestral physiology of archaea was likely hydrogen-dependent methanogenesis.”

    From Serpentinization as the source of energy, electrons, organics, catalysts, nutrients and pH gradients for the origin of LUCA and life (2023) · cites this paper as Williams et al., 2017

    The Results and Discussion (pp. 6, 9) suggest that the last archaeal common ancestor was an anaerobe that may have fixed CO2 through the Wood–Ljungdahl pathway, but say its electron donor could not be determined. On p. 7, key methanogenesis enzymes map with high probability only to the base of Euryarchaeota. The paper therefore does not establish hydrogen-dependent methanogenesis as the ancestral physiology of all archaea. (LLM, conf=0.87)

    Experimental — accuracy not yet measured
  • The ancestors of Archaea were thermophilic or hyperthermophilic.

    “while the ancestors of Bacteria and Archaea were thermophilic (Boussau et al. 2008) and thermophilic or hyperthermophilic (Groussin and Gouy 2011;Williams et al. 2017), respectively, LUCA may have been a mesophilic organism (Boussau et al. 2008).”

    From The Emergence of Life (2019) · cites this paper as Williams et al. 2017

  • The cA1V1 and ncA1V1 subunits were present in LACA (PPs = 0.99-1) and the cF1 and ncF1 subunits were present in LBCA (PPs = 0.99-1).

    “suggesting that the cA1V1 and ncA1V1 subunits were present in LACA (presence probability, PPs = 0.99–1)67 and the cF1 and ncF1 subunits were present in LBCA (PPs = 0.99–1)21.”

    From ATP synthase evolution on a cross-braced dated tree of life (2023) · cites this paper as [67]

    The Results and Discussion (p. 7) say that two V-type ATP synthase subunits were mapped to the DPANN common ancestor, not explicitly to LACA. Searches for cA1V1, ncA1V1, and their stated presence probabilities found no passage in our copy establishing the claim attributed to this source. The LBCA portion is attached to a different citation and is not assessed here. (LLM, conf=0.72)

    Experimental — accuracy not yet measured
  • The A/V-type ATP synthase was present in LACA and the F-type ATP synthase was in LBCA.

    “The results of our analyses confirm that the A/V-type ATP synthase was present in LACA67 and the F-type ATP synthase was in LBCA19–22.”

    From ATP synthase evolution on a cross-braced dated tree of life (2023) · cites this paper as [67]

    Citation 67 is attached to the claim about A/V-type ATP synthase in LACA, not the separately cited claim about F-type ATP synthase in LBCA. The Results and Discussion (p. 7) maps two V-type ATP synthase subunits to the DPANN common ancestor, but does not establish that an A/V-type ATP synthase was present in LACA. Searches for A/V-type ATP synthase, V-type ATP synthase, and ATP synthase in LACA found no decisive passage. (LLM, conf=0.72)

    Experimental — accuracy not yet measured

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Authors
Williams, T. A., Szöllősi, G. J., Spang, A., Foster, P. G., Heaps, S. E., Boussau, B., Ettema, T. J. G., & Embley, T. M.
Affiliations
  • University of Bristol (GB)
  • Eötvös Loránd University (HU)
  • Uppsala University (SE)
  • Natural History Museum (GB)
  • Newcastle University (GB)
  • Lyon 1 Université (FR)
Venue
Proceedings of the National Academy of Sciences
Published
2017-05-22
Volume
114
Issue
23
Pages
E4602-E4611
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2616865631
Cited by
233
References
115
Citations by year
2026: 9 · 2025: 11 · 2024: 22 · 2023: 23 · 2022: 26 · 2021: 32 · 2020: 31 · 2019: 32 · 2018: 35 · 2017: 11
FWCI
12.17
Type
journal article
Language
en
Open access
Locations
  • Proceedings of the National Academy of Sciences (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • Bristol Research (University of Bristol) (publishedVersion, other-oa)
  • Socio-Environmental Systems Modeling (acceptedVersion)
  • HAL (submittedVersion)
  • Durham Research Online (Durham University) (submittedVersion, cc-by)
  • Explore Bristol Research (submittedVersion, other-oa)
  • Data Archiving and Networked Services (DANS) (submittedVersion)
Funders
  • Royal Society (UF140626)
  • Wellcome Trust (045404)
  • EC | European Research Council (ERC- 2010-AdG-268701, 310039-PUZZLE_CELL)
  • Swedish Foundation for Strategic Research (SSF-FFL5)
  • Vetenskapsrådet (2015-04959)
  • European Commission (Marie Curie 625521)
  • Biotechnology and Biological Sciences Research Council (BB/G024707/1)
  • Agence Nationale de la Recherche (ANR-10-BINF-01-01)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Genomics and Phylogenetic Studies
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protist diversity and phylogeny
  • Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Origins and Evolution of Life
Keywords
archaea, gene family evolution, archaeal metabolism, Wood-Ljungdahl pathway, horizontal gene transfer, eukaryotic origin
MeSH terms
Algorithms, Archaea, Multigene Family, Models, Genetic, Phylogeny, Temperature, Evolution, Molecular, Gene Duplication, Genome, Archaeal, Gene Transfer, Horizontal, Metabolic Networks and Pathways, Eukaryota

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